:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;color:#213547;background-color:#fafafa;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%}*{box-sizing:border-box;margin:0;padding:0}html{height:100vh;height:100dvh;overflow:hidden}body{margin:0;min-width:320px;height:100vh;height:100dvh;overflow:hidden}@media(max-width:767px){html{overflow-y:auto;-webkit-overflow-scrolling:touch}body{overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-y:auto}}@media(display-mode:standalone),(display-mode:fullscreen),(display-mode:minimal-ui){html,body{overflow:hidden;overscroll-behavior-y:none}}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#f9f9f9;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(min-width:1024px){::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:#f1f1f1;border-radius:5px}::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:5px}::-webkit-scrollbar-thumb:hover{background:#a8a8a8}}@media(max-width:1023px){::-webkit-scrollbar{width:0px;height:0px;display:none}*{scrollbar-width:none}*{-ms-overflow-style:none}}.text-center{text-align:center}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.mb-4{margin-bottom:2rem}.desktop-sidebar{position:fixed;top:0;left:0;height:100vh;height:100dvh;background:color-mix(in srgb,var(--surface-1) 92%,transparent);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-right:1px solid var(--border);z-index:100;display:none;flex-direction:column;box-shadow:var(--shadow-sm);transition:width var(--duration-slow) var(--ease-out)}.sidebar-content{display:flex;flex-direction:column;gap:var(--space-1);padding:var(--space-6) var(--space-3);height:100%}.sidebar-wordmark{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);margin-bottom:var(--space-4);color:var(--text-primary);font-size:var(--text-sm);font-weight:var(--font-display);letter-spacing:-.02em;white-space:nowrap;overflow:hidden}.sidebar-wordmark-icon{flex-shrink:0;color:var(--accent)}.sidebar-item{display:flex;align-items:center;padding:var(--space-3) var(--space-4);border:none;background:transparent;border-radius:var(--radius-md);cursor:pointer;text-decoration:none;color:var(--text-secondary);transition:background var(--duration-base) var(--ease-out),color var(--duration-base) var(--ease-out);font-size:var(--text-sm);font-weight:500;gap:var(--space-3);white-space:nowrap;overflow:hidden;min-height:44px}.sidebar-item:hover{background:var(--surface-2);color:var(--text-primary)}.sidebar-item:focus-visible{outline:none;box-shadow:var(--focus-ring)}.sidebar-item:focus:not(:focus-visible){outline:none}.sidebar-item.active{background:var(--accent-soft);color:var(--accent)}.sidebar-item.active:hover{background:var(--accent-soft);color:var(--accent-hover)}.sidebar-icon{display:flex;align-items:center;justify-content:center;min-width:24px;flex-shrink:0}.sidebar-label{font-weight:500;transition:opacity var(--duration-base) var(--ease-out),width var(--duration-base) var(--ease-out)}.bottom-nav{position:fixed;bottom:0;left:0;right:0;background:color-mix(in srgb,var(--surface-1) 95%,transparent);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-top:1px solid var(--border);display:flex;justify-content:space-around;padding:var(--space-2) var(--space-4);padding-bottom:calc(var(--space-2) + env(safe-area-inset-bottom));z-index:1000;box-shadow:var(--shadow-md)}.nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-2) var(--space-3);border:none;background:none;cursor:pointer;text-decoration:none;color:var(--text-secondary);transition:color var(--duration-base) var(--ease-out);font-size:var(--text-xs);font-weight:500;min-width:56px;min-height:44px;border-radius:var(--radius-sm);position:relative;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.nav-item:focus:not(:focus-visible){outline:none}.nav-item:focus-visible{outline:none;box-shadow:var(--focus-ring)}.nav-item:hover{color:var(--text-primary)}.nav-item.active{color:var(--accent)}.nav-icon{display:flex;align-items:center;justify-content:center;margin-bottom:var(--space-1);position:relative}.nav-item.active .nav-icon:after{content:"";position:absolute;bottom:-6px;left:50%;transform:translate(-50%);width:4px;height:4px;border-radius:50%;background:var(--accent)}.nav-label{font-weight:500;letter-spacing:.02em}.nav-item.active .nav-label{font-weight:600;color:var(--accent)}@media(max-width:767px){.desktop-sidebar{display:none!important}.bottom-nav{display:flex!important}}@media(min-width:768px)and (max-width:1199px){.bottom-nav{display:none!important}.desktop-sidebar{display:flex!important;width:72px}.sidebar-content{padding:var(--space-6) var(--space-2);align-items:center}.sidebar-wordmark{justify-content:center;padding:var(--space-2);margin-bottom:var(--space-3)}.sidebar-wordmark-text{display:none}.sidebar-item{padding:var(--space-3);justify-content:center;border-radius:var(--radius-md)}.sidebar-label{display:none}.sidebar-item{position:relative}.sidebar-item:after{content:attr(aria-label);position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);background:var(--surface-3);color:var(--text-primary);padding:var(--space-2) var(--space-3);border-radius:var(--radius-sm);font-size:var(--text-xs);font-weight:500;white-space:nowrap;opacity:0;visibility:hidden;transition:opacity var(--duration-base) var(--ease-out),visibility var(--duration-base) var(--ease-out);pointer-events:none;z-index:1000;box-shadow:var(--shadow-md)}.sidebar-item:before{content:"";position:absolute;left:calc(100% + 4px);top:50%;transform:translateY(-50%);border:6px solid transparent;border-right-color:var(--surface-3);opacity:0;visibility:hidden;transition:opacity var(--duration-base) var(--ease-out),visibility var(--duration-base) var(--ease-out);pointer-events:none}.sidebar-item:hover:after,.sidebar-item:hover:before{opacity:1;visibility:visible}}@media(min-width:1200px){.bottom-nav{display:none!important}.desktop-sidebar{display:flex!important;width:200px}.sidebar-content{padding:var(--space-6) var(--space-3)}}.badge-notification{position:fixed;top:20px;right:20px;z-index:1000;animation:badgeNotificationSlideIn var(--duration-slow) var(--ease-out) both;cursor:pointer;-webkit-tap-highlight-color:transparent}@keyframes badgeNotificationSlideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.badge-notification-content{display:flex;align-items:center;gap:var(--space-4);background:var(--surface-1);border:1px solid var(--accent);border-radius:var(--radius-md);padding:var(--space-4) var(--space-6);box-shadow:var(--shadow-lg);max-width:320px}.badge-notification:focus-visible{box-shadow:var(--focus-ring);outline:none}.badge-notification-icon{font-size:var(--text-2xl);animation:badgeNotificationCelebration 1s ease-in-out infinite}@keyframes badgeNotificationCelebration{0%,to{transform:scale(1) rotate(0)}25%{transform:scale(1.15) rotate(-8deg)}75%{transform:scale(1.15) rotate(8deg)}}.badge-notification-title{font-size:var(--text-sm);font-weight:700;color:var(--text-primary);margin-bottom:var(--space-1)}.badge-notification-badge{font-size:var(--text-sm);color:var(--accent);font-weight:600;margin-bottom:var(--space-1)}.badge-notification-description{font-size:var(--text-xs);color:var(--text-secondary);line-height:1.35;font-weight:400}@media(max-width:768px){.badge-notification{top:auto;right:var(--space-4);bottom:5rem;left:var(--space-4);max-width:none}.badge-notification-content{max-width:none}}@media(max-width:480px){.badge-notification{bottom:5.5rem}}@media(prefers-reduced-motion:reduce){.badge-notification,.badge-notification-icon{animation:none}}.main-content{transition:margin-left .3s ease}.main-content.full-screen{margin-left:0!important}@media(max-width:767px){.main-content{margin-left:0}}@media(min-width:768px)and (max-width:1199px){.main-content{margin-left:72px}}@media(min-width:1200px){.main-content{margin-left:200px}}.error-boundary{display:flex;align-items:center;justify-content:center;min-height:300px;padding:var(--space-8)}.error-boundary-content{text-align:center;max-width:400px}.error-boundary-icon{font-size:var(--text-4xl);margin-bottom:var(--space-4)}.error-boundary-title{font-size:var(--text-2xl);font-weight:600;margin:0 0 var(--space-2) 0;color:var(--text-primary)}.error-boundary-message{color:var(--text-secondary);margin:0 0 var(--space-6) 0;line-height:1.5}.error-boundary-details{margin-bottom:var(--space-6);text-align:left}.error-boundary-details summary{cursor:pointer;color:var(--text-secondary);font-size:var(--text-sm);margin-bottom:var(--space-2)}.error-boundary-details summary:hover{color:var(--text-primary)}.error-boundary-details summary:focus-visible{box-shadow:var(--focus-ring);outline:none;border-radius:var(--radius-sm)}.error-boundary-stack{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:var(--space-4);font-size:var(--text-xs);color:var(--error-text);overflow-x:auto;white-space:pre-wrap;word-break:break-word;margin:0}.error-boundary-actions{display:flex;gap:var(--space-3);justify-content:center;flex-wrap:wrap}.error-boundary-btn{padding:var(--space-3) var(--space-6);border-radius:var(--radius-md);font-weight:600;cursor:pointer;transition:background var(--duration-base) var(--ease-out),transform var(--duration-fast) var(--ease-out);border:none;font-size:var(--text-sm);font-family:inherit;min-height:44px}.error-boundary-btn:focus-visible{box-shadow:var(--focus-ring);outline:none}.error-boundary-btn:active{transform:scale(.97)}.error-boundary-btn-primary{background:var(--accent);color:#fff}.error-boundary-btn-primary:hover{background:var(--accent-hover)}.error-boundary-btn-secondary{background:var(--surface-2);color:var(--text-primary);border:1px solid var(--border)}.error-boundary-btn-secondary:hover{background:var(--surface-3)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);border:none;border-radius:var(--radius-md);font-weight:600;cursor:pointer;font-family:inherit;outline:none;transition:background var(--duration-base) var(--ease-out),border-color var(--duration-base) var(--ease-out),transform var(--duration-fast) var(--ease-out),box-shadow var(--duration-base) var(--ease-out);-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.btn:disabled{opacity:.5;cursor:not-allowed}.btn:focus-visible{box-shadow:var(--focus-ring)}.btn:focus:not(:focus-visible){outline:none}.btn-small{padding:var(--space-2) var(--space-4);font-size:var(--text-sm);min-height:36px}.btn-medium{padding:var(--space-3) var(--space-6);font-size:var(--text-base);min-height:44px}.btn-large{padding:var(--space-4) var(--space-8);font-size:var(--text-lg);min-height:48px}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-primary:active:not(:disabled){transform:scale(.97)}.btn-secondary{background:var(--surface-2);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--surface-3);border-color:var(--accent)}.btn-secondary:active:not(:disabled){transform:scale(.97)}.btn-danger{background:var(--error-soft);color:var(--error-text);border:1px solid var(--error-border)}.btn-danger:hover:not(:disabled){background:var(--error);color:#fff;border-color:var(--error)}.btn-danger:active:not(:disabled){transform:scale(.97)}.btn-ghost{background:transparent;color:var(--text-primary);padding:var(--space-2)}.btn-ghost:hover:not(:disabled){background:var(--surface-2)}.btn-ghost:active:not(:disabled){transform:scale(.97)}.cookie-consent-overlay{position:fixed;bottom:0;left:0;right:0;z-index:10000;padding:var(--space-4);pointer-events:none}.cookie-consent-banner{max-width:600px;margin:0 auto;background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);pointer-events:auto;animation:fade-up var(--duration-slow) var(--ease-out) both}.cookie-consent-content{padding:var(--space-6)}.cookie-consent-title{font-size:var(--text-xl);font-weight:600;margin:0 0 var(--space-3) 0;color:var(--text-primary)}.cookie-consent-description{font-size:var(--text-sm);line-height:1.5;color:var(--text-secondary);margin:0 0 var(--space-6) 0}.cookie-consent-actions{display:flex;gap:var(--space-3);flex-wrap:wrap}.cookie-consent-actions .btn{flex:1;min-width:100px}.cookie-consent-details{display:flex;flex-direction:column;gap:var(--space-6)}.cookie-consent-item{padding:var(--space-4);background:var(--surface-2);border-radius:var(--radius-md);border:1px solid var(--border)}.cookie-consent-item-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-2);gap:var(--space-4)}.cookie-consent-item-title{font-size:var(--text-base);font-weight:600;color:var(--text-primary)}.cookie-consent-item-status{font-size:var(--text-sm);color:var(--text-secondary);font-weight:500}.cookie-consent-item-description{font-size:var(--text-sm);line-height:1.5;color:var(--text-secondary);margin:0}.cookie-consent-toggle-wrapper{display:flex;align-items:center;gap:var(--space-2);cursor:pointer}.cookie-consent-toggle{width:52px;height:28px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--surface-3);border-radius:14px;position:relative;cursor:pointer;transition:background var(--duration-base) var(--ease-out);outline:none}.cookie-consent-toggle:focus-visible{box-shadow:var(--focus-ring)}.cookie-consent-toggle:checked{background:var(--accent)}.cookie-consent-toggle:before{content:"";position:absolute;width:24px;height:24px;border-radius:50%;background:#fff;top:2px;left:2px;transition:transform var(--duration-base) var(--ease-out);box-shadow:var(--shadow-sm)}.cookie-consent-toggle:checked:before{transform:translate(24px)}.cookie-consent-toggle-label{font-size:var(--text-sm);color:var(--text-primary);font-weight:500;-webkit-user-select:none;user-select:none}@media(max-width:767px){.cookie-consent-overlay{padding:var(--space-3)}.cookie-consent-content{padding:var(--space-5)}.cookie-consent-actions{flex-direction:column}.cookie-consent-actions .btn{width:100%}.cookie-consent-item-header{flex-direction:column;align-items:flex-start;gap:var(--space-3)}}@media(prefers-reduced-motion:reduce){.cookie-consent-banner{animation:none}}:root{--bg: #f6f6f8;--surface-1: #ffffff;--surface-2: #f0f0f3;--surface-3: #e5e5ea;--background: var(--bg);--surface: var(--surface-1);--card-bg: var(--surface-1);--background-alt: var(--surface-2);--hover-bg: var(--surface-2);--text-primary: #1a1a1a;--text-secondary: #6b7280;--text: var(--text-primary);--text-color: var(--text-primary);--border: #e5e5e7;--border-light: #f0f0f3;--border-color: var(--border);--accent: #007aff;--accent-hover: #0056cc;--accent-soft: rgba(0, 122, 255, .12);--accent-light: #e3f2fd;--primary-color: var(--accent);--primary-hover: var(--accent-hover);--success: #059669;--success-soft: #ecfdf5;--success-border: #86efac;--success-text: #047857;--success-light: var(--success-soft);--error: #dc2626;--error-soft: #fef2f2;--error-border: #fecaca;--error-text: #b91c1c;--error-light: var(--error-soft);--primary: #1a1a1a;--primary-light: #333;--red: #e11d48;--red-light: #fecdd3;--black: #1a1a1a;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--font-display: 700;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-7: 1.75rem;--space-8: 2rem;--space-9: 2.25rem;--space-10: 2.5rem;--space-11: 2.75rem;--space-12: 3rem;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .1);--shadow-xl: 0 16px 40px rgba(0, 0, 0, .12);--duration-fast: .12s;--duration-base: .2s;--duration-slow: .32s;--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent)}.app-container.dark,body.dark{color-scheme:dark;--bg: #101014;--surface-1: #17171c;--surface-2: #1f1f26;--surface-3: #2a2a33;--background: var(--bg);--surface: var(--surface-1);--card-bg: var(--surface-1);--background-alt: var(--surface-2);--hover-bg: var(--surface-3);--text-primary: #f4f4f5;--text-secondary: #a1a1aa;--text: var(--text-primary);--text-color: var(--text-primary);--border: #3f3f46;--border-light: #27272a;--border-color: var(--border);--accent: #3b82f6;--accent-hover: #2563eb;--accent-soft: rgba(59, 130, 246, .16);--accent-light: #1e3a5f;--primary-color: var(--accent);--primary-hover: var(--accent-hover);--success: #34d399;--success-soft: rgba(52, 211, 153, .12);--success-border: rgba(52, 211, 153, .35);--success-text: #6ee7b7;--success-light: var(--success-soft);--error: #f87171;--error-soft: rgba(248, 113, 113, .12);--error-border: rgba(248, 113, 113, .35);--error-text: #fca5a5;--error-light: var(--error-soft);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .5);--shadow-xl: 0 16px 40px rgba(0, 0, 0, .55)}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-6px)}40%,80%{transform:translate(6px)}}@keyframes pop-in{0%{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}@keyframes fade-up{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.tabular-nums{font-variant-numeric:tabular-nums}.view-page-header{display:flex;justify-content:center;align-items:center;width:100%;text-align:center;padding:var(--space-3) 0 var(--space-4);margin-bottom:var(--space-8);border-bottom:1px solid var(--border)}.view-page-title{font-size:var(--text-2xl);font-weight:var(--font-display);color:var(--text-primary);margin:0;line-height:1.2}a:focus-visible,button:focus-visible,[role=button]:focus-visible,[role=option]:focus-visible,[role=switch]:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:none}.app-container{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh;height:100vh;height:100dvh;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;overflow:hidden}.app-container button:not([class]){color:inherit}@media(max-width:767px){.app-container{height:100vh;height:100dvh;min-height:100vh;min-height:100dvh;overflow:visible}}@media(display-mode:standalone),(display-mode:fullscreen),(display-mode:minimal-ui){.app-container{overflow:hidden}}.main-content{flex:1;padding:var(--space-4);--main-padding-top: var(--space-4);--main-padding-inline: var(--space-4);padding-bottom:calc(5.5rem + env(safe-area-inset-bottom,0px));overflow-y:auto;height:0;min-height:0;-webkit-overflow-scrolling:touch;overscroll-behavior-y:contain}.page-container{width:100%;max-width:880px;margin-inline:auto}.page-container--practice{max-width:720px}@media(min-width:768px){.main-content{scroll-behavior:smooth}}@media(max-width:767px){.main-content{padding:var(--space-4);padding-bottom:calc(5.5rem + env(safe-area-inset-bottom,0px));overscroll-behavior-y:auto}}@media(display-mode:standalone),(display-mode:fullscreen),(display-mode:minimal-ui){.main-content{overscroll-behavior-y:contain}}@media(min-width:768px)and (max-width:1199px){.main-content{padding:var(--space-6);--main-padding-top: var(--space-6);--main-padding-inline: var(--space-6);padding-bottom:var(--space-6)}}@media(min-width:1200px){.main-content{padding:var(--space-8);--main-padding-top: var(--space-8);--main-padding-inline: var(--space-8);padding-bottom:var(--space-8)}}@media(min-width:1536px){.main-content{padding:var(--space-10);--main-padding-top: var(--space-10);--main-padding-inline: var(--space-10);padding-bottom:var(--space-10)}}.support-footer{margin:1.75rem 0 .5rem;padding:0 1rem;text-align:center}.support-footer-link{display:inline-flex;align-items:center;gap:.35rem;font-size:.8125rem;font-weight:500;color:var(--text-secondary, #666);text-decoration:none;opacity:.85;border-radius:6px;-webkit-tap-highlight-color:transparent}.support-footer-link:hover{color:var(--text-color, #222);opacity:1;text-decoration:underline}.support-footer-link:focus-visible{box-shadow:var(--focus-ring);outline:none}.stack-view{width:100%;display:flex;flex-direction:column;align-items:center}.stack-sticky{position:sticky;top:0;z-index:100;width:100%;margin-bottom:var(--space-8);background:var(--bg)}.stack-sticky-bleed{height:var(--main-padding-top, var(--space-4));margin-top:calc(-1 * var(--main-padding-top, var(--space-4)));background:var(--bg)}.stack-header{margin-bottom:0;background:var(--bg)}.stack-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(80px,1fr));gap:var(--space-3);width:100%;max-width:600px;justify-content:center;margin:0 auto}@media(min-width:640px){.stack-grid{grid-template-columns:repeat(4,1fr);gap:var(--space-4);max-width:400px}}@media(min-width:768px){.stack-grid{grid-template-columns:repeat(6,1fr);gap:var(--space-4);max-width:720px}}@media(min-width:1024px){.stack-grid{grid-template-columns:repeat(6,1fr);gap:var(--space-5);max-width:840px}}@media(min-width:1280px){.stack-grid{grid-template-columns:repeat(6,1fr);gap:var(--space-6);max-width:960px}}.stack-card-item{aspect-ratio:2.5 / 3.5;display:flex;align-items:center;justify-content:center;width:100%;position:relative;z-index:0}.stack-card-item:hover{z-index:1}.playing-card{width:100%;height:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;transition:box-shadow var(--duration-base) var(--ease-out),border-color var(--duration-base) var(--ease-out);cursor:pointer}.playing-card-svg{padding:4px;overflow:hidden;border:none;background:transparent}.playing-card-img{width:100%;height:100%;object-fit:contain;display:block;border-radius:var(--radius-sm)}.playing-card:hover,.playing-card:hover .playing-card-img{box-shadow:var(--shadow-md)}.card-index,.card-index-overlay{position:absolute;bottom:var(--space-1);left:var(--space-1);font-size:var(--text-xs);font-weight:700;color:var(--text-primary);background:var(--surface-2);padding:.125rem .375rem;border-radius:var(--radius-sm);border:1px solid var(--border);font-variant-numeric:tabular-nums;line-height:1.2;z-index:1}@media(min-width:1024px){.card-index,.card-index-overlay{font-size:var(--text-sm);padding:.1875rem .4375rem}}.card-value{font-size:var(--text-lg);font-weight:600;margin-bottom:var(--space-1);line-height:1}.card-suit{font-size:var(--text-xl);line-height:1}.playing-card.card-red .card-value,.playing-card.card-red .card-suit{color:var(--red)}.playing-card.card-black .card-value,.playing-card.card-black .card-suit{color:var(--black)}@media(max-width:480px){.stack-grid{grid-template-columns:repeat(3,1fr);gap:var(--space-2);max-width:300px}.card-value{font-size:var(--text-base)}.card-suit{font-size:var(--text-lg)}}.practice-view{width:100%;max-width:480px;margin:0 auto;padding:.5rem .5rem 6rem;display:flex;flex-direction:column;gap:.75rem}.practice-mode-suspense-fallback{min-height:14rem;border-radius:var(--radius-lg);padding:var(--space-4) var(--space-5);box-sizing:border-box;background:linear-gradient(90deg,var(--surface-2) 0%,var(--surface-3) 50%,var(--surface-2) 100%);background-size:200% 100%;animation:practice-mode-suspense-shimmer 1.2s ease-in-out infinite}.practice-mode-suspense-fallback-inner{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;min-height:12rem;text-align:center}.practice-mode-suspense-spinner{width:2.25rem;height:2.25rem;flex-shrink:0;border:3px solid var(--surface-3);border-top-color:var(--text-secondary);border-radius:50%;animation:practice-mode-suspense-spin .75s linear infinite}.practice-mode-suspense-label{margin:0;font-size:var(--text-sm);font-weight:500;line-height:1.35;color:var(--text-secondary);max-width:18rem}.practice-mode-load-error{min-height:12rem;padding:1.25rem 1rem;border-radius:.75rem;border:1px solid rgba(220,80,80,.35);background:#dc50500f;box-sizing:border-box;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;text-align:center}.app-container.dark .practice-mode-load-error{border-color:#ff787859;background:#ff787814}.practice-mode-load-error-message{margin:0;font-size:.95rem;line-height:1.4;color:var(--text, #222);max-width:20rem}.app-container.dark .practice-mode-load-error-message{color:var(--text, #eee)}.practice-mode-load-error-retry{padding:.5rem 1rem;font-size:.9375rem;font-weight:600;border-radius:.5rem;cursor:pointer;border:1px solid var(--text-secondary, #666);background:var(--surface, #fff);color:var(--text, #222)}.practice-mode-load-error-retry:focus-visible{outline:2px solid var(--focus-ring, #3b82f6);outline-offset:2px}.app-container.dark .practice-mode-load-error-retry{background:var(--surface, #2c2c2c);color:var(--text, #f0f0f0);border-color:var(--text-secondary, #888)}@keyframes practice-mode-suspense-shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}@keyframes practice-mode-suspense-spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.practice-mode-suspense-fallback{animation:none;background:var(--surface-muted, #eee)}.app-container.dark .practice-mode-suspense-fallback{background:var(--surface-muted, #2a2a2a)}.practice-mode-suspense-spinner{animation:none;border-top-color:var(--surface, #dcdcdc)}.app-container.dark .practice-mode-suspense-spinner{border-top-color:var(--surface, #404040)}}@media(min-width:1024px){.practice-view{max-width:none;padding:0}}.selection-header{text-align:center;padding:.5rem 0 .25rem}.selection-title{font-size:1.8rem;font-weight:700;color:var(--text, #222);margin:0 0 .5rem}.selection-subtitle{font-size:1rem;color:var(--text-secondary, #666);margin:0;font-weight:500}.mode-list{display:flex;flex-direction:column;gap:.5rem;padding:.25rem 0;flex:1;min-height:0}@media(min-width:1024px){.mode-list{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;padding:0}.mode-card{height:100%;min-height:120px}}.mode-card{display:flex;align-items:center;gap:.75rem;padding:1rem;border:1px solid var(--border, #e5e5e7);border-radius:16px;background:var(--surface, #ffffff);color:var(--text, #222);cursor:pointer;transition:all .2s ease;text-align:left;box-shadow:0 2px 8px #0000000a}.mode-card:hover{background:var(--accent-light, #f0f8ff);border-color:var(--accent, #007aff);transform:translateY(-2px);box-shadow:0 4px 16px #007aff26}.mode-icon{font-size:2rem;line-height:1;flex-shrink:0}.mode-content{flex:1;display:flex;flex-direction:column;gap:.5rem}.mode-name{font-size:1.1rem;font-weight:600;color:var(--text, #222);margin:0}.mode-description{font-size:.9rem;color:var(--text-secondary, #666);line-height:1.4;margin:0}.mode-stats{display:flex;align-items:center;gap:.5rem;font-size:.8rem;margin-top:.25rem}.mode-accuracy{color:var(--accent, #007aff);font-weight:600}.mode-attempts{color:var(--text-secondary, #888);font-weight:500}.mode-arrow{font-size:1.2rem;color:var(--text-secondary, #999);flex-shrink:0;transition:all .2s ease}.mode-card:hover .mode-arrow{color:var(--accent, #007aff);transform:translate(4px)}.practice-header{display:flex;align-items:center;gap:.75rem;padding:.25rem 0 .5rem;border-bottom:1px solid var(--border, #e5e5e7)}.back-button{display:flex;align-items:center;gap:.5rem;padding:.75rem 1rem;border:1px solid var(--border, #e5e5e7);border-radius:12px;background:var(--background, #ffffff);color:var(--text-secondary, #666);font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s ease;box-shadow:0 1px 3px #0000000d;text-decoration:none}.back-button:hover{background:var(--accent-light, #e3f2fd);border-color:var(--accent, #007aff);color:var(--accent, #007aff);transform:translateY(-1px);box-shadow:0 2px 8px #007aff26}.back-button:active{transform:translateY(0);box-shadow:0 1px 3px #0000000d}.practice-title{display:flex;align-items:center;gap:.75rem;flex:1}.practice-icon{font-size:1.5rem;line-height:1}.practice-name{font-size:1.2rem;font-weight:600;color:var(--text, #222)}.direction-toggle{display:flex;gap:.5rem;padding:.25rem;background:var(--surface, #f8f9fa);border-radius:12px;border:1px solid var(--border, #e5e5e7)}.direction-btn{flex:1;padding:.75rem 1rem;border:none;border-radius:8px;background:none;color:var(--text-secondary, #666);font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s ease}.direction-btn:hover:not(.active){background:var(--accent-light, #e3f2fd)}.direction-btn.active{background:var(--accent, #007aff);color:#fff;box-shadow:0 1px 4px #007aff33}.practice-main{flex:1;display:flex;flex-direction:column;gap:1rem;min-height:0}.question-card{background:var(--surface, #ffffff);border:1px solid var(--border, #e5e5e7);border-radius:20px;padding:1.5rem;text-align:center;box-shadow:0 2px 12px #0000000d}.question-text{font-size:1.4rem;font-weight:600;color:var(--text, #222);line-height:1.3;margin:0}.answer-form{display:flex;flex-direction:column;gap:1.5rem}.input-container{position:relative;display:flex;flex-direction:column;align-items:center;gap:1rem}.answer-input{width:100%;max-width:280px;padding:1.25rem 1.5rem;font-size:1.3rem;font-weight:600;text-align:center;border:2px solid var(--border, #e5e5e7);border-radius:16px;background:var(--surface, #ffffff);color:var(--text, #222);transition:all .2s ease}.answer-input:focus{outline:none;border-color:var(--accent, #007aff);box-shadow:0 0 0 4px #007aff1a;transform:scale(1.02)}.answer-input::placeholder{color:var(--text-secondary, #999);font-weight:500}.feedback-area{min-height:3rem;display:flex;align-items:center;justify-content:center;margin:.5rem 0}.feedback-message{padding:.75rem 1.5rem;border-radius:12px;font-size:1rem;font-weight:600;text-align:center;background:var(--surface, #f8f9fa);border:1px solid var(--border, #e5e5e7);color:var(--success, #28a745)}.feedback-message.feedback-correct{color:var(--success, #28a745)}.feedback-message.feedback-error{color:var(--error, #dc2626)}.submit-btn{width:100%;max-width:280px;margin:0 auto;padding:1.25rem 2rem;border:none;border-radius:16px;background:var(--accent, #007aff);color:#fff;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 12px #007aff40;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.submit-btn:hover{background:var(--accent-dark, #0056b3);transform:translateY(-1px);box-shadow:0 4px 16px #007aff59}.submit-btn:active{transform:translateY(0)}.submit-btn:focus:not(:focus-visible){outline:none}.app-container.dark .mode-card{background:var(--surface);border-color:var(--border)}.app-container.dark .mode-card:hover{background:var(--accent-light, #1a365d)}.app-container.dark .practice-header{border-bottom-color:var(--border)}.app-container.dark .back-button{background:var(--background, #1a1a1a);border-color:var(--border, #404040);color:var(--text-secondary, #ccc);box-shadow:0 1px 3px #0003}.app-container.dark .back-button:hover{background:var(--accent-light, #1a365d);border-color:var(--accent, #007aff);color:var(--accent, #007aff);box-shadow:0 2px 8px #007aff40}.app-container.dark .direction-toggle,.app-container.dark .question-card{background:var(--surface);border-color:var(--border)}.app-container.dark .answer-input{background:var(--surface);border-color:var(--border);color:var(--text)}.app-container.dark .feedback-message{background:var(--surface);border-color:var(--border)}.app-container.dark .feedback-message.feedback-correct{color:var(--success, #28a745)}.app-container.dark .feedback-message.feedback-error{color:var(--error, #dc2626)}@media(max-width:640px){.practice-mode{padding-bottom:240px}.practice-mode--no-keyboard{padding-bottom:0}.practice-view{padding:.75rem;gap:1rem}.selection-header{padding:.25rem 0 .125rem}.selection-title{font-size:1.5rem}.selection-subtitle{font-size:.9rem}.mode-card{padding:.75rem}.mode-icon{font-size:1.5rem}.mode-name{font-size:1rem}.mode-description{font-size:.8rem}.practice-header{padding:.125rem 0 .25rem}.back-button{padding:.625rem .875rem;font-size:.85rem;border-radius:10px}.practice-name{font-size:1rem}.question-card{padding:1rem}.question-text{font-size:1.1rem}.answer-input{font-size:1rem;padding:.75rem}.feedback-area{min-height:2.5rem;margin:.25rem 0}.feedback-message{font-size:.95rem;padding:.625rem 1rem}}@media(max-width:375px){.practice-mode{padding-bottom:210px}.session-strip{padding:var(--space-2) var(--space-3)}.practice-feedback-zone{height:2.5rem;min-height:2.5rem;max-height:2.5rem}}@media(max-width:480px){.practice-view{padding:.5rem}.selection-title{font-size:1.3rem}.mode-card{padding:.5rem}.question-card{padding:.75rem}.answer-input{padding:.5rem}}.practice-content{flex:1;display:flex;flex-direction:column;min-height:0;overflow:auto;padding:.75rem 1rem}.practice-mode{display:flex;flex-direction:column;gap:1rem;height:100%;min-height:0;overflow:auto}.answer-buttons{display:flex;gap:1.5rem;justify-content:center;margin:1.5rem 0 0}.answer-btn{padding:.85rem 1.5rem;font-size:1.05rem;font-weight:600;width:150px;border:none;border-radius:8px;background:var(--accent, #007aff);color:#fff;cursor:pointer;transition:background .2s,transform .1s;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.answer-btn:disabled{opacity:.6;cursor:not-allowed}.answer-btn:hover:not(:disabled){background:#005bb5;transform:translateY(-2px)}.answer-btn:focus:not(:focus-visible){outline:none}.swipeable-card-container{position:relative;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;width:100%;max-width:400px;height:200px}.swipe-label{position:absolute;top:50%;transform:translateY(-50%);padding:.75rem 1.5rem;border-radius:12px;font-size:1.2rem;font-weight:700;z-index:1;pointer-events:none;opacity:0;animation:fadeInLabel .2s ease forwards}.swipe-label-left{left:1rem;background:var(--accent, #007aff);color:#fff;box-shadow:0 4px 12px #007aff4d}.swipe-label-right{right:1rem;background:var(--accent, #007aff);color:#fff;box-shadow:0 4px 12px #007aff4d}@keyframes fadeInLabel{0%{opacity:0;transform:translateY(-50%) scale(.8)}to{opacity:1;transform:translateY(-50%) scale(1)}}.quiz-card-large{display:flex;align-items:center;justify-content:center;margin:0 auto;width:120px;height:170px;font-size:2.2rem;font-weight:700;border-radius:16px;background:var(--background, #fff);box-shadow:0 2px 12px #00000014;border:2px solid var(--border, #e5e5e7);letter-spacing:.04em;transition:box-shadow .2s;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent}.swipeable-card{position:relative;z-index:2;touch-action:none}.swipeable-card.dragging{cursor:grabbing;box-shadow:0 4px 20px #00000026}.quiz-card-has-svg.swipeable-card.dragging{box-shadow:none}.swipeable-card:not(.dragging){cursor:grab}.quiz-card-large.card-red{color:#dc2626}.quiz-card-large.card-black{color:#1a1a1a}.quiz-card-large.quiz-card-has-svg{padding:4px;overflow:hidden;border:none;box-shadow:none;background:transparent}.quiz-card-large .quiz-card-img{width:100%;height:100%;object-fit:contain;display:block;pointer-events:none}.quiz-card-large .quiz-card-text{-webkit-user-select:none;user-select:none}.app-container.dark .quiz-card-large.card-red{color:#ef4444}.app-container.dark .quiz-card-large.card-black{color:#fff}.app-container.dark .swipe-label-left,.app-container.dark .swipe-label-right{background:var(--accent, #007aff);color:#fff}.first-or-second-half .question-text{font-size:1.15rem;font-weight:500;text-align:center;padding:0 1.2rem}.quartet-inputs{display:flex;gap:1.2rem;justify-content:center;margin:2rem 0 1.5rem}.quartet-input{width:60px;padding:.7rem .5rem;font-size:1.2rem;text-align:center;border:1.5px solid var(--border, #e5e5e7);border-radius:8px;background:var(--background, #fff);color:var(--text, #222);font-weight:600;outline:none;transition:border .2s}.quartet-input:focus{border-color:var(--accent, #007aff)}.quartet-input-active{border-color:var(--accent, #007aff);box-shadow:0 0 0 2px #007aff40}.quartet-input-wrong{border-color:#e11d48!important;box-shadow:0 0 0 2px #fecdd3}.quartet-form .submit-btn{display:block;margin:2rem auto 0}.cut-card-input-area{display:flex;flex-direction:column;align-items:center;margin:.5rem 0}.cut-card-input{width:120px;padding:.8rem 1rem;font-size:1.2rem;text-align:center;border:1.5px solid var(--border, #e5e5e7);border-radius:8px;background:var(--background, #fff);color:var(--text, #222);font-weight:600;outline:none;transition:border .2s;cursor:pointer}.cut-card-input:focus{border-color:var(--accent, #007aff)}.plop-section{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem}.plop-suit-buttons{display:flex;gap:.75rem;justify-content:center}.plop-suit-btn{width:56px;height:56px;font-size:1.6rem;font-weight:700;border:2px solid var(--border, #e5e5e7);border-radius:12px;background:var(--surface, #ffffff);cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.plop-suit-btn-red{color:#dc2626}.plop-suit-btn-black{color:#1a1a1a}.plop-suit-btn:hover:not(:disabled){border-color:var(--accent, #007aff);transform:translateY(-2px);box-shadow:0 4px 12px #007aff26}.plop-suit-btn-selected{border-color:var(--accent, #007aff);background:var(--accent-light, #e3f2fd);box-shadow:0 0 0 3px #007aff33}.plop-suit-btn-wrong{border-color:#e11d48!important;box-shadow:0 0 0 3px #fecdd3!important;background:#fff1f2}.plop-suit-btn:disabled{opacity:.65;cursor:not-allowed}.plop-distance-labels{display:flex;gap:1.2rem;justify-content:center}.plop-distance-label{width:60px;text-align:center;font-size:.75rem;font-weight:500;color:var(--text-secondary, #888)}.app-container.dark .plop-suit-btn{background:var(--surface, #2a2a2a);border-color:var(--border, #404040)}.app-container.dark .plop-suit-btn-red{color:#ef4444}.app-container.dark .plop-suit-btn-black{color:#fff}.app-container.dark .plop-suit-btn-selected{background:var(--accent-light, #1a365d);border-color:var(--accent, #007aff)}.app-container.dark .plop-suit-btn-wrong{background:#4c0519;border-color:#e11d48!important}.mode-stack-badge{display:inline-flex;align-items:center;gap:.25rem;padding:.15rem .5rem;font-size:.7rem;font-weight:600;border-radius:6px;background:var(--accent-light, #e3f2fd);color:var(--accent, #007aff);white-space:nowrap}.app-container.dark .mode-stack-badge{background:var(--accent-light, #1a365d)}.plop-cheatsheet{background:var(--surface, #ffffff);border:1px solid var(--border, #e5e5e7);border-radius:16px;padding:1rem;box-shadow:0 2px 12px #0000000d;animation:plopCheatsheetIn .2s ease;overflow-x:auto}@keyframes plopCheatsheetIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.plop-cheatsheet-title{font-size:.95rem;font-weight:700;color:var(--text, #222);margin-bottom:.75rem;text-align:center}.plop-cheatsheet-table{width:100%;border-collapse:collapse;font-size:.85rem}.plop-cheatsheet-table th{font-weight:600;color:var(--text-secondary, #666);padding:.4rem .6rem;border-bottom:2px solid var(--border, #e5e5e7);text-align:center}.plop-cheatsheet-table td{padding:.35rem .6rem;border-bottom:1px solid var(--border, #f0f0f0);text-align:center;color:var(--text, #222)}.plop-cheatsheet-table tbody tr:last-child td{border-bottom:none}.plop-cheatsheet-rank{font-weight:700}.plop-cheatsheet-distances{font-variant-numeric:tabular-nums;letter-spacing:.02em}.plop-cheatsheet-highlight{background:var(--accent-light, #e3f2fd)}.plop-cheatsheet-highlight td{font-weight:600}.app-container.dark .plop-cheatsheet{background:var(--surface, #2a2a2a);border-color:var(--border, #404040)}.app-container.dark .plop-cheatsheet-table td{border-bottom-color:var(--border, #333)}.app-container.dark .plop-cheatsheet-highlight{background:var(--accent-light, #1a365d)}.plop-feedback-wrapper{min-height:3.25rem;margin-top:.75rem;display:flex;align-items:center;justify-content:center}.plop-feedback{text-align:center}.plop-form .submit-btn{margin:.5rem auto 0}@media(max-width:767px){.plop-mode{gap:.35rem}.plop-question-card{padding:.5rem .75rem;border-radius:12px}.plop-question-card .question-text{font-size:.95rem;line-height:1.3}.plop-form 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1rem}.practice-options-label{font-size:.875rem;color:var(--text-color);white-space:nowrap}.practice-icon{font-size:1.75rem;line-height:1}.practice-name{font-size:1.25rem;font-weight:600;color:var(--text-color);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.practice-title-names.has-short .practice-name-short{display:none}.practice-title-names.has-short .practice-name-full{display:inline}@media(max-width:768px){.practice-header{padding:.75rem 1rem}.back-button{padding:.625rem;font-size:1.25rem;min-width:44px;min-height:44px}.practice-icon{font-size:1.5rem}.practice-name{font-size:1.125rem}.practice-title{margin-right:44px}.practice-options-button{width:40px;height:40px;font-size:1.125rem}.practice-options-dropdown{min-width:200px;right:0;left:auto}}@media(max-width:480px){.practice-title-names.has-short .practice-name-full{display:none}.practice-title-names.has-short .practice-name-short{display:inline}}.practice-mode-selector{width:100%}.selection-header{text-align:center;margin-bottom:var(--space-8)}.selection-title{font-size:var(--text-3xl);font-weight:var(--font-display);margin:0 0 var(--space-2) 0;color:var(--text-primary);line-height:1.2}.selection-subtitle{font-size:var(--text-lg);color:var(--text-secondary);margin:0 0 var(--space-6) 0;line-height:1.4}.practice-stat-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:var(--space-2) var(--space-4);padding:var(--space-3) var(--space-5);background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius-lg);max-width:100%;margin-inline:auto}.practice-stat-bar-item{display:inline-flex;align-items:center;gap:var(--space-2);font-size:var(--text-sm);color:var(--text-secondary);white-space:nowrap}.practice-stat-bar-streak{color:var(--text-primary);font-weight:600}.practice-stat-bar-streak--at-risk{opacity:.65}.practice-stat-bar-flame{font-size:var(--text-lg);line-height:1}.practice-stat-bar-value{font-weight:600;color:var(--text-primary)}.practice-stat-bar-label{font-size:var(--text-xs);color:var(--text-secondary);font-weight:500}.practice-stat-bar-badges{flex-direction:column;align-items:flex-start;gap:var(--space-1);min-width:7rem}.practice-stat-bar-progress{width:100%;height:4px;background:var(--surface-3);border-radius:2px;overflow:hidden}.practice-stat-bar-progress-fill{height:100%;background:var(--accent);border-radius:2px;transition:width var(--duration-slow) var(--ease-out)}.mode-list{display:grid;grid-template-columns:1fr;gap:var(--space-4);width:100%}.mode-card{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-5);background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;text-align:left;font-family:inherit;color:inherit;animation:fade-up var(--duration-slow) var(--ease-out) both;transition:transform var(--duration-base) var(--ease-out),border-color var(--duration-base) var(--ease-out),box-shadow var(--duration-base) var(--ease-out);-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.mode-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-md)}.mode-card:active{transform:translateY(0)}.mode-card:focus-visible{outline:none;box-shadow:var(--focus-ring)}.mode-card:focus:not(:focus-visible){outline:none}.mode-icon{font-size:var(--text-4xl);line-height:1;flex-shrink:0}.mode-content{flex:1;min-width:0;display:flex;flex-direction:column;gap:var(--space-1)}.mode-name-row{display:flex;align-items:center;gap:var(--space-2);flex-wrap:wrap}.mode-name{font-size:var(--text-lg);font-weight:600;color:var(--text-primary)}.mode-accuracy-chip{display:inline-flex;align-items:center;padding:.125rem .5rem;font-size:var(--text-xs);font-weight:600;color:var(--accent);background:var(--accent-soft);border-radius:var(--radius-sm)}.mode-description{font-size:var(--text-sm);color:var(--text-secondary);line-height:1.4}.mode-arrow{flex-shrink:0;color:var(--text-secondary);transition:transform var(--duration-base) var(--ease-out),color var(--duration-base) var(--ease-out)}.mode-card:hover .mode-arrow{transform:translate(3px);color:var(--accent)}@media(min-width:1024px){.mode-list{grid-template-columns:repeat(2,1fr)}}@media(min-width:1280px){.mode-list{grid-template-columns:repeat(3,1fr)}}@media(max-width:768px){.selection-title{font-size:var(--text-2xl)}.selection-subtitle{font-size:var(--text-base)}.mode-card{padding:var(--space-4);min-height:44px}.mode-icon{font-size:var(--text-3xl)}.mode-name{font-size:var(--text-base)}.practice-stat-bar{gap:var(--space-2) var(--space-3);padding:var(--space-3) var(--space-4)}}@media(prefers-reduced-motion:reduce){.mode-card{animation:none}}.session-summary-root{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:flex;align-items:center;justify-content:center;padding:var(--space-4);animation:fade-up var(--duration-base) var(--ease-out) both;pointer-events:none}.session-summary-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:#00000073;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);-webkit-tap-highlight-color:transparent;pointer-events:auto}.session-summary-dialog{position:relative;width:100%;max-width:400px;padding:var(--space-8) var(--space-6) var(--space-6);background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);outline:none;text-align:center;animation:pop-in var(--duration-slow) var(--ease-spring) 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var(--space-5);font-size:var(--text-sm);color:var(--text-secondary)}.session-summary-accuracy{display:flex;flex-direction:column;align-items:center;gap:var(--space-1);margin-bottom:var(--space-5)}.session-summary-accuracy-value{font-size:var(--text-4xl);font-weight:var(--font-display);line-height:1;color:var(--accent);font-variant-numeric:tabular-nums}.session-summary-accuracy-label{font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);font-weight:600}.session-summary-metrics{display:flex;justify-content:center;gap:var(--space-10);margin-bottom:var(--space-5)}.session-summary-metric{display:flex;flex-direction:column;gap:var(--space-1)}.session-summary-metric-value{font-size:var(--text-xl);font-weight:700;color:var(--text-primary);font-variant-numeric:tabular-nums}.session-summary-metric-label{font-size:var(--text-xs);color:var(--text-secondary)}.session-summary-streak{display:flex;align-items:center;justify-content:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);margin-bottom:var(--space-6);border-radius:var(--radius-md);background:var(--surface-2);border:1px solid var(--border)}.session-summary-streak-flame{font-size:var(--text-2xl);line-height:1}.session-summary-streak-text{display:flex;flex-direction:column;text-align:left}.session-summary-streak-line{font-size:var(--text-base);font-weight:700;color:var(--text-primary)}.session-summary-streak-hint{font-size:var(--text-xs);color:var(--text-secondary)}.session-summary-actions{display:flex;flex-direction:column;gap:var(--space-3)}.session-summary-share-row{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-2)}.session-summary-share-icon{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-1);min-height:4.25rem;padding:var(--space-2) var(--space-1);border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface-2);color:var(--text-primary);font:inherit;font-size:var(--text-xs);font-weight:600;line-height:1.1;cursor:pointer;transition:border-color var(--duration-base) var(--ease-out),transform var(--duration-fast) var(--ease-out);-webkit-tap-highlight-color:transparent}.session-summary-share-icon svg{width:1.5rem;height:1.5rem}.session-summary-share-icon:hover{border-color:var(--accent)}.session-summary-share-icon:active{transform:scale(.97)}.session-summary-share-icon:focus-visible{box-shadow:var(--focus-ring);outline:none}.session-summary-share-whatsapp{color:#128c7e}.session-summary-share-facebook{color:#1877f2}.session-summary-share-instagram{color:#e1306c}.session-summary-share-x{color:var(--text-primary)}.session-summary-share-feedback{margin:0;font-size:var(--text-sm);color:var(--text-secondary);text-align:center}.session-summary-secondary-actions{display:flex;gap:var(--space-3)}.session-summary-secondary-actions .btn{flex:1}.session-summary-support-link{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-1);margin-top:var(--space-1);padding:var(--space-1);font-size:var(--text-sm);font-weight:500;color:var(--text-secondary);text-decoration:none;border-radius:var(--radius-sm);-webkit-tap-highlight-color:transparent}.session-summary-support-link:hover{color:var(--text-primary);text-decoration:underline}.session-summary-support-link:focus-visible{box-shadow:var(--focus-ring);outline:none}body.dark .session-summary-backdrop{background:#000000a6}@media(prefers-reduced-motion:reduce){.session-summary-root,.session-summary-dialog{animation:none}}.stats-view{width:100%;display:flex;flex-direction:column;gap:var(--space-8)}.stats-view .view-page-header{margin-bottom:0}.stats-grid{display:grid;grid-template-columns:1fr;gap:var(--space-6)}@media(min-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr)}.session-history-card,.weak-spots-card,.mode-performance-card,.badge-display{grid-column:1 / -1}}.stats-card{background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:border-color var(--duration-base) var(--ease-out),box-shadow var(--duration-base) var(--ease-out)}.stats-card .card-header{padding:var(--space-6) var(--space-6) var(--space-4);border-bottom:1px solid var(--border);background:var(--surface-1)}.stats-card .card-title{font-size:var(--text-sm);font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em}.stats-card .card-content{padding:var(--space-6);display:flex;flex-direction:column;gap:var(--space-6);background:var(--surface-1)}.overall-accuracy .accuracy-display{text-align:center}.accuracy-value{font-size:var(--text-3xl);font-weight:var(--font-display);color:var(--accent);line-height:1;margin-bottom:var(--space-6);font-variant-numeric:tabular-nums}.accuracy-details{display:flex;flex-direction:column;gap:var(--space-2);width:100%}.detail-item{display:flex;flex-direction:row;justify-content:space-between;align-items:center;width:100%;padding:var(--space-3) var(--space-4);background:var(--surface-2);border-radius:var(--radius-sm);border:1px solid var(--border);box-sizing:border-box}.detail-value{font-size:var(--text-xl);font-weight:700;color:var(--text-primary);line-height:1;font-variant-numeric:tabular-nums}.detail-label{font-size:var(--text-xs);color:var(--text-secondary);font-weight:600;text-transform:uppercase;letter-spacing:.05em}.performance-metrics{display:flex;flex-direction:column;gap:var(--space-2);width:100%}.metric{display:flex;flex-direction:row;justify-content:space-between;align-items:center;width:100%;padding:var(--space-3) var(--space-4);background:var(--surface-2);border-radius:var(--radius-sm);border:1px solid var(--border);box-sizing:border-box}.metric-value{font-size:var(--text-xl);font-weight:700;color:var(--accent);line-height:1;font-variant-numeric:tabular-nums}.metric-label{font-size:var(--text-xs);color:var(--text-secondary);font-weight:600;text-transform:uppercase;letter-spacing:.05em}.recent-attempts-section{padding:var(--space-5);background:var(--surface-2);border-radius:var(--radius-md);border:1px solid var(--border)}.attempts-label{font-size:var(--text-sm);font-weight:600;color:var(--text-secondary);margin-bottom:var(--space-4);text-transform:uppercase;letter-spacing:.05em}.attempts-dots{display:flex;flex-wrap:wrap;gap:var(--space-2);justify-content:center}.attempt-dot{width:14px;height:14px;border-radius:50%;transition:transform var(--duration-base) var(--ease-out);border:2px solid transparent}.attempt-dot.correct{background:var(--success)}.attempt-dot.incorrect{background:var(--error)}.attempt-dot:hover{transform:scale(1.2);border-color:var(--accent)}.trend-section{display:flex;justify-content:space-between;align-items:center;padding:var(--space-5);background:var(--surface-2);border-radius:var(--radius-md);border:1px solid var(--border)}.trend-label{font-size:var(--text-sm);font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.trend-value{font-size:var(--text-sm);font-weight:600;color:var(--text-primary);padding:var(--space-2) var(--space-4);background:var(--accent-soft);border-radius:var(--radius-sm);border:1px solid var(--accent)}.debug-section{display:flex;justify-content:center;margin-top:var(--space-4)}.debug-button{padding:var(--space-3) var(--space-6);background:var(--accent);color:#fff;border:none;border-radius:var(--radius-md);font-size:var(--text-sm);font-weight:600;cursor:pointer;transition:background var(--duration-base) var(--ease-out),transform var(--duration-fast) var(--ease-out);box-shadow:var(--shadow-sm)}.debug-button:hover{background:var(--accent-hover)}.debug-button:focus-visible{box-shadow:var(--focus-ring)}@media(max-width:640px){.stats-view{gap:var(--space-6)}.stats-grid{gap:var(--space-5)}.stats-card .card-header{padding:var(--space-5) var(--space-5) var(--space-4)}.stats-card .card-content{padding:var(--space-5);gap:var(--space-5)}.accuracy-value{font-size:var(--text-2xl)}.detail-value,.metric-value{font-size:var(--text-lg)}}.card{background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:border-color var(--duration-base) var(--ease-out),box-shadow var(--duration-base) var(--ease-out),transform var(--duration-base) var(--ease-out)}.card-hoverable{cursor:pointer}.card-hoverable:hover{border-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-2px)}.card-hoverable:focus-visible{outline:none;box-shadow:var(--focus-ring)}.card-header{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-6);border-bottom:1px solid var(--border)}.card-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;font-size:var(--text-xl);line-height:1;background:var(--accent-soft);color:var(--accent);border-radius:var(--radius-md);flex-shrink:0}.card-title{font-size:var(--text-sm);font-weight:600;margin:0;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em}.card-content{padding:var(--space-6)}.card-content>*+*{margin-top:var(--space-4)}.overall-accuracy-card{grid-column:span 1;align-self:start}.overall-accuracy-card .accuracy-display{display:flex;flex-direction:column;align-items:center;gap:var(--space-6);width:100%}.overall-accuracy-card .accuracy-value{font-size:var(--text-3xl);font-weight:var(--font-display);color:var(--accent);line-height:1;margin:0;font-variant-numeric:tabular-nums}.overall-accuracy-card .accuracy-details{display:flex;flex-direction:row;flex-wrap:wrap;gap:var(--space-3);width:100%;justify-content:center}.overall-accuracy-card .accuracy-details .detail-item{min-width:6rem;flex:1}@media(max-width:640px){.overall-accuracy-card .accuracy-value{font-size:var(--text-2xl)}}.daily-streak-card .streak-metrics{display:flex;justify-content:center;gap:var(--space-10);margin-bottom:var(--space-3);width:100%}.daily-streak-card .streak-metric{display:flex;flex-direction:column;align-items:center;gap:var(--space-1);text-align:center}.daily-streak-card .streak-metric-value{font-size:var(--text-3xl);font-weight:var(--font-display);color:var(--text-primary);font-variant-numeric:tabular-nums}.daily-streak-card .streak-metric-label{font-size:var(--text-xs);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em;font-weight:600}.daily-streak-card .streak-hint{margin:0;font-size:var(--text-sm);color:var(--text-secondary);text-align:center}.daily-streak-card .streak-hint-done{color:var(--success-text)}.recent-performance-card{grid-column:span 1}.recent-performance-card .performance-metrics{width:100%;margin-bottom:1.5rem}.recent-performance-card .metric-value{color:var(--primary-color)}.recent-attempts-section{margin-bottom:1.5rem}.attempts-label{font-size:.875rem;color:var(--text-secondary);margin-bottom:.75rem}.attempts-dots{display:flex;flex-wrap:wrap;gap:.5rem}.attempt-dot{width:12px;height:12px;border-radius:50%;transition:transform .2s ease}.attempt-dot:hover{transform:scale(1.3)}.attempt-dot.correct{background:#10b981}.attempt-dot.incorrect{background:#ef4444}.trend-section{display:flex;align-items:center;justify-content:space-between;padding:1rem;background:var(--hover-bg);border-radius:12px}.trend-label{font-size:.875rem;font-weight:500;color:var(--text-secondary)}.trend-value{font-size:.9375rem;font-weight:600;color:var(--text-color)}@media(max-width:768px){.recent-performance-card 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.card-title{flex:1;font-size:var(--text-sm);font-weight:600;margin:0;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em}.mode-performance-chevron{font-size:var(--text-xs);color:var(--text-secondary);transition:transform var(--duration-base) var(--ease-out)}.mode-performance-chevron-open{transform:rotate(180deg)}.mode-performance-content{padding:var(--space-6);width:100%;box-sizing:border-box}.mode-list{display:flex;flex-direction:column;gap:var(--space-4);width:100%}.mode-row{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-3);background:var(--surface-2);border-radius:var(--radius-sm);border:1px solid var(--border);width:100%;box-sizing:border-box}.mode-info{display:flex;flex-direction:column;gap:var(--space-1);flex:0 0 200px}.mode-name{font-size:var(--text-sm);font-weight:600;color:var(--text-primary)}.mode-attempts{font-size:var(--text-xs);color:var(--text-secondary)}.mode-accuracy-container{flex:1;display:flex;align-items:center;gap:var(--space-3);min-width:0}.mode-accuracy-track{flex:1;height:8px;border-radius:var(--radius-sm);background:var(--surface-3);overflow:hidden;min-width:100px}.mode-accuracy-bar{height:100%;border-radius:var(--radius-sm);background:var(--accent);min-width:2px;animation:mode-bar-grow var(--duration-slow) var(--ease-out) both}@keyframes mode-bar-grow{0%{width:0!important}}.mode-accuracy-bar.high{background:var(--success)}.mode-accuracy-bar.medium{background:#f59e0b}.mode-accuracy-bar.low{background:var(--error)}.mode-accuracy-text{font-size:var(--text-sm);font-weight:600;color:var(--text-primary);min-width:45px;text-align:right;font-variant-numeric:tabular-nums}@media(max-width:768px){.mode-row{flex-direction:column;align-items:stretch;gap:var(--space-3)}.mode-info{flex:1 1 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#f5f5f5)}.session-history-header:focus{outline:none}.session-history-header:focus-visible{box-shadow:inset var(--focus-ring);outline:none}.session-history-header .card-icon{font-size:1.5rem;line-height:1}.session-history-header .card-title{flex:1;font-size:1.125rem;font-weight:600;margin:0;color:var(--text-color)}.session-history-chevron{font-size:.75rem;color:var(--text-secondary, #666);transition:transform .2s ease}.session-history-chevron-open{transform:rotate(180deg)}.session-history-content{padding:1.5rem}.session-history-list{display:flex;flex-direction:column;gap:.75rem;max-height:420px;overflow-y:auto;padding-right:.25rem}.session-history-list::-webkit-scrollbar{width:6px}.session-history-list::-webkit-scrollbar-track{background:var(--card-bg, var(--surface, #f8f9fa));border-radius:3px}.session-history-list::-webkit-scrollbar-thumb{background:var(--border-color, 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.language-select-option-selected{background:var(--accent-light)}.language-select-check{flex-shrink:0;font-size:.875rem;font-weight:700}.feedback-duration-control{display:flex;flex-direction:column;gap:.5rem;width:100%}.feedback-duration-value{font-size:var(--text-sm, .875rem);font-weight:600;color:var(--primary-color);font-variant-numeric:tabular-nums}.feedback-duration-slider{width:100%;height:6px;margin:.75rem 0;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;cursor:pointer}.feedback-duration-slider:focus-visible{outline:none}.feedback-duration-slider::-webkit-slider-runnable-track{height:6px;border-radius:3px;background:var(--surface-3, var(--border-color))}.feedback-duration-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:22px;height:22px;margin-top:-8px;border-radius:50%;border:3px solid var(--surface-1, var(--card-bg));background:var(--accent, var(--primary-color));box-shadow:var(--shadow-md, 0 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var(--ease-out)}.input:focus-visible{border-color:var(--accent);box-shadow:var(--focus-ring);background:var(--surface-1)}.input:disabled{opacity:.5;cursor:not-allowed}.input::placeholder{color:var(--text-secondary)}.input:read-only{cursor:pointer;background:var(--surface-2)}.input[type=number]{text-align:center;font-size:var(--text-xl);font-weight:600;font-variant-numeric:tabular-nums}.input[type=number]::-webkit-inner-spin-button,.input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.input[type=number]{-moz-appearance:textfield}.stack-builder-page{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh;background:var(--bg);color:var(--text-primary)}.builder-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4) var(--space-6);background:var(--surface-1);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.back-button{padding:var(--space-2) var(--space-4);background:transparent;border:none;font-size:var(--text-base);font-weight:500;color:var(--accent);cursor:pointer;font-family:inherit;border-radius:var(--radius-sm);min-height:44px;-webkit-tap-highlight-color:transparent}.back-button:hover{background:var(--surface-2)}.back-button:focus-visible{box-shadow:var(--focus-ring);outline:none}.builder-title{font-size:var(--text-lg);font-weight:600;margin:0;color:var(--text-primary)}.save-button{padding:var(--space-2) var(--space-5);background:var(--accent);color:#fff;border:none;border-radius:var(--radius-md);font-size:var(--text-sm);font-weight:600;cursor:pointer;font-family:inherit;transition:background var(--duration-base) var(--ease-out),transform var(--duration-fast) var(--ease-out);min-height:44px;-webkit-tap-highlight-color:transparent}.save-button:hover:not(:disabled){background:var(--accent-hover)}.save-button:active:not(:disabled){transform:scale(.97)}.save-button:focus-visible{box-shadow:var(--focus-ring);outline:none}.save-button:disabled{opacity:.4;cursor:not-allowed}.name-section{padding:var(--space-4) var(--space-6);background:var(--bg)}.stack-name-input{font-size:var(--text-lg);font-weight:500}.progress-section{padding:0 var(--space-6) var(--space-4);background:var(--bg)}.progress-bar{height:6px;background:var(--surface-3);border-radius:3px;overflow:hidden;margin-bottom:var(--space-2)}.progress-fill{height:100%;background:var(--accent);border-radius:3px;transition:width var(--duration-slow) var(--ease-out)}.progress-info{display:flex;justify-content:space-between;align-items:center}.progress-text{font-size:var(--text-sm);color:var(--text-secondary)}.progress-complete{font-size:var(--text-sm);font-weight:600;color:var(--success-text)}.builder-main{flex:1;display:flex;flex-direction:column;gap:var(--space-6);padding:var(--space-4) var(--space-6);overflow-y:auto}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-3)}.section-title{font-size:var(--text-sm);font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em;margin:0}.clear-all-btn,.clear-btn{padding:var(--space-2) var(--space-3);background:transparent;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:var(--text-xs);font-weight:500;color:var(--text-secondary);cursor:pointer;font-family:inherit;transition:background var(--duration-base) var(--ease-out),border-color var(--duration-base) var(--ease-out),color var(--duration-base) var(--ease-out);min-height:36px;-webkit-tap-highlight-color:transparent}.clear-all-btn:hover,.clear-btn:hover{background:var(--error-soft);border-color:var(--error-border);color:var(--error-text)}.clear-all-btn:focus-visible,.clear-btn:focus-visible{box-shadow:var(--focus-ring);outline:none}.position-grid-section,.card-selector-section,.mobile-position-nav{background:var(--surface-1);border-radius:var(--radius-lg);padding:var(--space-5);border:1px solid var(--border);display:flex;flex-direction:column}.position-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:var(--space-2)}.position-cell{display:flex;flex-direction:column;align-items:center;justify-content:center;aspect-ratio:1;padding:var(--space-1);background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:border-color var(--duration-base) var(--ease-out),background var(--duration-base) var(--ease-out),transform var(--duration-fast) var(--ease-out);font-family:inherit;min-height:44px;-webkit-tap-highlight-color:transparent}.position-cell:hover{border-color:var(--accent)}.position-cell:focus-visible{box-shadow:var(--focus-ring);outline:none}.position-cell.selected{border-color:var(--accent);background:var(--accent-soft)}.position-cell:active{transform:scale(.94)}.position-num{font-size:.625rem;font-weight:500;color:var(--text-secondary);line-height:1;font-variant-numeric:tabular-nums}.position-card-value{font-size:.75rem;font-weight:600;color:var(--text-primary);line-height:1;margin-top:.125rem}.card-selector{display:flex;flex-direction:column;gap:var(--space-3)}.suit-row{display:flex;align-items:center;gap:var(--space-3)}.suit-symbol{font-size:var(--text-xl);width:2rem;text-align:center;flex-shrink:0}.suit-symbol.hearts,.suit-symbol.diamonds{color:var(--red)}.suit-symbol.spades,.suit-symbol.clubs{color:var(--text-primary)}.rank-buttons{display:flex;gap:var(--space-2);flex-wrap:wrap;flex:1}.rank-btn{min-width:2.5rem;min-height:2.5rem;display:flex;align-items:center;justify-content:center;padding:var(--space-1) var(--space-2);background:var(--surface-3);border:none;border-radius:var(--radius-sm);font-size:var(--text-sm);font-weight:600;color:var(--text-primary);cursor:pointer;font-family:inherit;transition:transform var(--duration-fast) var(--ease-out);-webkit-tap-highlight-color:transparent}.rank-btn:hover:not(:disabled){background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--accent)}.rank-btn:active:not(:disabled){transform:scale(.94)}.rank-btn:focus-visible{box-shadow:var(--focus-ring);outline:none}.rank-btn.selected{background:var(--accent);color:#fff}.rank-btn.used{opacity:.35;cursor:not-allowed;text-decoration:line-through}.mobile-position-nav{flex-direction:row;align-items:center;justify-content:space-between;gap:var(--space-4)}.nav-btn{width:3rem;height:3rem;display:flex;align-items:center;justify-content:center;background:var(--surface-3);border:none;border-radius:var(--radius-md);font-size:var(--text-xl);font-weight:600;color:var(--text-primary);cursor:pointer;font-family:inherit;transition:transform var(--duration-fast) var(--ease-out);-webkit-tap-highlight-color:transparent}.nav-btn:hover{background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--accent)}.nav-btn:active{transform:scale(.94)}.nav-btn:focus-visible{box-shadow:var(--focus-ring);outline:none}.current-position-display{display:flex;flex-direction:column;align-items:center;gap:var(--space-1);flex:1}.position-label{font-size:var(--text-xs);font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.position-number{font-size:var(--text-3xl);font-weight:700;color:var(--accent);line-height:1;font-variant-numeric:tabular-nums}.position-card{font-size:var(--text-xl);font-weight:600;color:var(--text-primary)}.mobile-position-grid{padding:var(--space-4) var(--space-6) var(--space-8);background:var(--bg);border-top:1px solid var(--border)}.mini-grid{display:grid;grid-template-columns:repeat(13,1fr);gap:var(--space-1)}.mini-cell{aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.5625rem;font-weight:600;color:var(--text-secondary);cursor:pointer;font-family:inherit;padding:0;min-height:28px;font-variant-numeric:tabular-nums;-webkit-tap-highlight-color:transparent}.mini-cell:focus-visible{box-shadow:var(--focus-ring);outline:none}.mini-cell.filled{background:var(--accent-soft);color:var(--accent)}.mini-cell.selected{background:var(--accent);border-color:var(--accent);color:#fff}@media(min-width:768px){.builder-main{flex-direction:row;align-items:flex-start;padding:var(--space-6) var(--space-8);gap:var(--space-8)}.position-grid-section{flex:1;max-width:500px}.card-selector-section{flex:1;max-width:500px;position:sticky;top:calc(4rem + var(--space-4));align-self:flex-start}.position-grid-section .section-header,.card-selector-section .section-header{min-height:2.5rem}}@media(min-width:1024px){.builder-main{max-width:1200px;margin:0 auto;width:100%}}@media(prefers-reduced-motion:reduce){.progress-fill{transition:none}}