:root{--primary-color: #3b82f6;--success-color: #10b981;--danger-color: #ef4444;--bg-color: #111827;--surface-color: #1f2937;--text-color: #f9fafb;--text-muted: #9ca3af;--border-radius: 12px;--safe-area-top: env(safe-area-inset-top, 0px);--safe-area-bottom: env(safe-area-inset-bottom, 0px)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;margin:0;padding:0;background-color:var(--bg-color);color:var(--text-color);height:100dvh;overflow:hidden;position:fixed;width:100%}#root{width:100%;height:100%;display:flex;flex-direction:column}#app-root{width:100%;height:100%;display:flex;flex-direction:column;overflow:hidden}.icon-btn{background:#ffffff1a;border:none;color:#fff;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);cursor:pointer}.action-btn{flex:1;padding:14px;border:none;border-radius:8px;font-weight:600;font-size:.95rem;cursor:pointer}.action-btn.primary{background-color:var(--primary-color);color:#fff}.action-btn.success{background-color:var(--success-color);color:#fff}.action-btn.danger{background-color:#ffffff1a;color:#fff}.action-btn:disabled{opacity:.5;cursor:not-allowed}.toast{position:fixed;bottom:20px;left:50%;transform:translate(-50%);padding:12px 24px;border-radius:8px;z-index:1000;box-shadow:0 4px 6px #0003;color:#fff;animation:fadeIn .3s ease}.toast-info{background-color:#333}.toast-error{background-color:var(--danger-color)}@keyframes fadeIn{0%{opacity:0;transform:translate(-50%,10px)}to{opacity:1;transform:translate(-50%)}}.camera-error-overlay,.camera-placeholder{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#000c;color:#fff;z-index:50;padding:20px;text-align:center;gap:16px}.camera-error-overlay p{color:var(--danger-color);font-weight:600}.camera-error-overlay button,.camera-placeholder button{flex:0 0 auto;min-width:150px;max-width:200px}.screen{width:100%;height:100%;display:flex;flex-direction:column;position:relative}#app-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:#0003;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:absolute;top:0;left:0;right:0;z-index:20;padding-top:calc(16px + var(--safe-area-top))}#app-header h2{font-size:1.1rem;margin:0;font-weight:600}.header-spacer{width:40px}#camera-container{flex:1;position:relative;background:#000;overflow:hidden;display:flex;align-items:center;justify-content:center}#camera-view{width:100%;height:100%;object-fit:cover;display:block}#frame-overlay{position:absolute;inset:0;pointer-events:none;display:flex;align-items:center;justify-content:center;z-index:10}.guide-box{width:80%;height:65%;border:2px solid rgba(255,255,255,.5);border-radius:16px;box-shadow:0 0 0 9999px #00000080;position:relative}.guide-box:after{content:"Align face here";position:absolute;top:-30px;left:0;right:0;text-align:center;color:#fffc;font-size:.9rem;text-shadow:0 1px 2px rgba(0,0,0,.5)}#controls{background:var(--surface-color);padding:20px;padding-bottom:calc(20px + var(--safe-area-bottom));border-top-left-radius:24px;border-top-right-radius:24px;position:relative;z-index:20;margin-top:-20px}#step-info{margin-bottom:20px;text-align:center}#step-label{margin:0 0 10px;font-weight:600;color:var(--text-color)}.photo-indicators{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}.badge{background:#ffffff1a;padding:4px 8px;border-radius:6px;font-size:.75rem;color:var(--text-muted)}#capture-mode{display:flex;justify-content:center;padding-bottom:10px}#capture-btn{width:72px;height:72px;border-radius:50%;background:#fff;border:4px solid rgba(0,0,0,.1);outline:4px solid white;outline-offset:4px;cursor:pointer;transition:transform .1s}#capture-btn:active{transform:scale(.95)}#preview-mode{display:flex;flex-direction:column;gap:16px}#preview-label{text-align:center;margin:0;color:var(--text-muted)}.input-group input{width:100%;padding:16px;background:#0003;border:1px solid rgba(255,255,255,.1);border-radius:12px;color:#fff;font-size:1.2rem;text-align:center;letter-spacing:2px}.input-group input:focus{outline:none;border-color:var(--primary-color)}.validation-message{color:var(--danger-color);font-size:.9rem;text-align:center;min-height:1.2em;margin:0}#preview-buttons{display:flex;gap:12px}#status-bar{position:absolute;top:calc(10px + var(--safe-area-top));left:50%;transform:translate(-50%);background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);padding:6px 12px;border-radius:20px;z-index:30;display:flex;align-items:center;gap:8px;font-size:.8rem}.text-btn{background:none;border:none;color:var(--primary-color);font-weight:600;padding:0;cursor:pointer;text-decoration:underline;font-size:inherit}.home-content{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px}.home-menu{display:flex;flex-direction:column;gap:16px;width:100%;max-width:320px;margin-top:40px}.menu-btn{display:flex;align-items:center;padding:20px;background:var(--surface-color);border:1px solid rgba(255,255,255,.05);border-radius:16px;color:#fff;font-size:1.1rem;cursor:pointer;transition:transform .1s,background .2s}.menu-btn:active{transform:scale(.98)}.menu-btn.primary{background:var(--primary-color);border:none}.menu-btn.secondary{background:transparent;border:1px solid rgba(255,255,255,.2)}.menu-btn:disabled{opacity:.5;cursor:not-allowed}.menu-btn .icon{font-size:1.5rem;margin-right:16px}.app-version{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:auto;padding:1rem;color:var(--text-muted);font-size:.8rem}.icon-btn{background:none;border:none;color:inherit;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:4px;border-radius:50%;transition:all .2s}.icon-btn:hover{background:#ffffff1a;color:var(--primary-color)}.attendance-content{flex:1;display:flex;flex-direction:column;padding:80px 20px 20px;overflow-y:auto}.attendance-content .subtitle{text-align:center;color:var(--text-muted);margin:0 0 24px;font-size:.95rem}.groups-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;max-width:600px;margin:0 auto;width:100%}.group-card{aspect-ratio:1;background:var(--surface-color);border:2px solid rgba(255,255,255,.1);border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:transform .2s,border-color .2s,background .2s;text-decoration:none;color:#fff;position:relative;overflow:hidden}.group-card:hover:not(.disabled){transform:translateY(-4px);border-color:var(--primary-color);background:linear-gradient(135deg,var(--surface-color),rgba(59,130,246,.1))}.group-card:active:not(.disabled){transform:translateY(-2px)}.group-card.disabled{opacity:.5;cursor:not-allowed}.group-number{font-size:3rem;font-weight:700;background:linear-gradient(135deg,var(--primary-color),#60a5fa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px}.group-card.disabled .group-number{background:linear-gradient(135deg,#4b5563,#6b7280);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.group-name{font-size:.9rem;font-weight:600;color:var(--text-color)}.coming-soon{position:absolute;bottom:8px;font-size:.7rem;color:var(--text-muted);font-style:italic}.knowledge-content{flex:1;display:flex;flex-direction:column;padding:80px 20px 20px;overflow-y:auto}.knowledge-content .subtitle{text-align:center;color:var(--text-muted);margin:0 0 24px;font-size:.95rem}.resources-list{display:flex;flex-direction:column;gap:16px;max-width:600px;margin:0 auto;width:100%}.resource-card{background:var(--surface-color);border:2px solid rgba(255,255,255,.1);border-radius:16px;padding:20px;display:flex;align-items:center;gap:16px;cursor:pointer;transition:transform .2s,border-color .2s,background .2s;text-decoration:none;color:#fff;position:relative}.resource-card:hover:not(.disabled){transform:translate(4px);border-color:var(--primary-color);background:linear-gradient(135deg,var(--surface-color),rgba(59,130,246,.05))}.resource-card:active:not(.disabled){transform:translate(2px)}.resource-card.disabled{opacity:.6;cursor:not-allowed}.resource-icon{font-size:2.5rem;flex-shrink:0}.resource-info{flex:1;display:flex;flex-direction:column;gap:4px}.resource-name{margin:0;font-size:1.1rem;font-weight:600;color:var(--text-color)}.resource-description{margin:0;font-size:.85rem;color:var(--text-muted);line-height:1.4}.coming-soon-badge{display:inline-block;margin-top:4px;font-size:.7rem;color:var(--text-muted);background:#ffffff0d;padding:2px 8px;border-radius:4px;font-style:italic}.resource-arrow{color:var(--text-muted);flex-shrink:0;transition:transform .2s}.resource-card:hover:not(.disabled) .resource-arrow{transform:translate(4px);color:var(--primary-color)}.loading-spinner{width:40px;height:40px;border:4px solid rgba(255,255,255,.1);border-left-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;margin:auto}@keyframes spin{to{transform:rotate(360deg)}}