@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";:root{--primary-50:#f0f9ff;--primary-100:#e0f2fe;--primary-200:#bae6fd;--primary-300:#7dd3fc;--primary-400:#38bdf8;--primary-500:#0ea5e9;--primary-600:#0284c7;--primary-700:#0369a1;--primary-800:#075985;--primary-900:#0c4a6e;--success-50:#f0fdf4;--success-100:#dcfce7;--success-500:#22c55e;--success-600:#16a34a;--danger-50:#fef2f2;--danger-100:#fee2e2;--danger-500:#ef4444;--danger-600:#dc2626;--warning-500:#f59e0b;--gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-200:#e5e7eb;--gray-300:#d1d5db;--gray-400:#9ca3af;--gray-500:#6b7280;--gray-600:#4b5563;--gray-700:#374151;--gray-800:#1f2937;--gray-900:#111827;--bg-primary:#0f172a;--bg-secondary:#1e293b;--bg-tertiary:#334155;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--glass-bg:#1e293bb3;--glass-border:#94a3b81a;--glass-shadow:0 8px 32px 0 #0000005e;--gradient-primary:linear-gradient(135deg, #0ea5e9 0%, #8b5cf6 100%);--gradient-success:linear-gradient(135deg, #22c55e 0%, #10b981 100%);--gradient-danger:linear-gradient(135deg, #ef4444 0%, #f97316 100%);--gradient-dark:linear-gradient(180deg, #0f172a 0%, #1e293b 100%);--gradient-card:linear-gradient(145deg, #1e293be6 0%, #0f172ae6 100%);--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--space-xs:.25rem;--space-sm:.5rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2rem;--space-2xl:3rem;--radius-sm:.375rem;--radius-md:.5rem;--radius-lg:.75rem;--radius-xl:1rem;--radius-2xl:1.5rem;--radius-full:9999px;--transition-fast:.15s ease;--transition-normal:.25s ease;--transition-slow:.35s ease}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;font-size:16px}body{font-family:var(--font-sans);background:var(--gradient-dark);color:var(--text-primary);min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-attachment:fixed;min-height:100dvh;line-height:1.6;overflow-x:hidden}#root{min-height:100vh;flex-direction:column;min-height:100dvh;display:flex}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes pulse-glow{0%,to{box-shadow:0 0 20px #0ea5e94d}50%{box-shadow:0 0 40px #0ea5e980}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.app-container{width:100%;max-width:480px;padding:var(--space-md);padding-bottom:calc(var(--space-xl) + env(safe-area-inset-bottom));flex-direction:column;flex:1;margin:0 auto;display:flex}.screen{flex-direction:column;flex:1;display:flex}.header{padding:var(--space-md) 0;margin-bottom:var(--space-lg);justify-content:space-between;align-items:center;display:flex}.header-title{background:var(--gradient-primary);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:1.5rem;font-weight:700}.header-back{align-items:center;gap:var(--space-xs);color:var(--text-secondary);cursor:pointer;padding:var(--space-sm);margin-left:calc(-1 * var(--space-sm));border-radius:var(--radius-md);transition:all var(--transition-fast);background:0 0;border:none;font-size:.875rem;font-weight:500;display:flex}.header-back:hover{color:var(--text-primary);background:var(--glass-bg)}.card{background:var(--gradient-card);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:var(--radius-xl);padding:var(--space-lg);box-shadow:var(--glass-shadow)}.card-title{color:var(--text-primary);margin-bottom:var(--space-md);font-size:1.125rem;font-weight:600}.form-group{margin-bottom:var(--space-lg)}.form-label{color:var(--text-secondary);margin-bottom:var(--space-sm);font-size:.875rem;font-weight:500;display:block}.form-input{width:100%;padding:var(--space-md);background:var(--bg-tertiary);border:1px solid var(--glass-border);border-radius:var(--radius-lg);color:var(--text-primary);font-family:var(--font-sans);transition:all var(--transition-fast);font-size:1rem}.form-input:focus{border-color:var(--primary-500);outline:none;box-shadow:0 0 0 3px #0ea5e933}.form-input::placeholder{color:var(--text-muted)}.form-select{appearance:none;background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");background-position:right .75rem center;background-repeat:no-repeat;background-size:1.5em 1.5em;padding-right:2.5rem}.btn{justify-content:center;align-items:center;gap:var(--space-sm);padding:var(--space-md) var(--space-xl);font-family:var(--font-sans);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-normal);border:none;font-size:1rem;font-weight:600;text-decoration:none;display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 14px #0ea5e963}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #0ea5e980}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-success{background:var(--gradient-success);color:#fff;box-shadow:0 4px 14px #22c55e63}.btn-success:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #22c55e80}.btn-outline{border:2px solid var(--glass-border);color:var(--text-primary);background:0 0}.btn-outline:hover:not(:disabled){background:var(--glass-bg);border-color:var(--primary-500)}.btn-ghost{color:var(--text-secondary);background:0 0}.btn-ghost:hover:not(:disabled){background:var(--glass-bg);color:var(--text-primary)}.btn-block{width:100%}.btn-lg{padding:var(--space-lg) var(--space-2xl);font-size:1.125rem}.toggle-switch{cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;display:inline-flex;position:relative}.toggle-switch input{opacity:0;width:0;height:0;position:absolute}.toggle-track{background:var(--danger-500);border-radius:var(--radius-full);width:52px;height:28px;transition:all var(--transition-normal);position:relative}.toggle-switch input:checked+.toggle-track{background:var(--success-500)}.toggle-track:after{content:"";width:24px;height:24px;transition:all var(--transition-normal);background:#fff;border-radius:50%;position:absolute;top:2px;left:2px;box-shadow:0 2px 4px #0003}.toggle-switch input:checked+.toggle-track:after{transform:translate(24px)}.student-card{padding:var(--space-md);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);margin-bottom:var(--space-sm);transition:all var(--transition-fast);justify-content:space-between;align-items:center;display:flex}.student-card:hover{background:var(--bg-tertiary)}.student-info{align-items:center;gap:var(--space-md);flex:1;min-width:0;display:flex}.student-avatar{background:var(--gradient-primary);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;font-size:1rem;font-weight:600;display:flex}.student-details{flex:1;min-width:0}.student-name{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-weight:600;overflow:hidden}.student-roll{color:var(--text-muted);font-size:.875rem}.student-status{padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-sm);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem;font-weight:600}.student-status.present{background:var(--success-100);color:var(--success-600)}.student-status.absent{background:var(--danger-100);color:var(--danger-600)}.stats-bar{gap:var(--space-md);margin-bottom:var(--space-lg);display:flex}.stat-item{text-align:center;padding:var(--space-md);background:var(--glass-bg);border-radius:var(--radius-lg);border:1px solid var(--glass-border);flex:1}.stat-value{font-size:1.5rem;font-weight:700}.stat-value.present{color:var(--success-500)}.stat-value.absent{color:var(--danger-500)}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem}.photo-upload{border:2px dashed var(--glass-border);border-radius:var(--radius-xl);padding:var(--space-2xl);text-align:center;cursor:pointer;transition:all var(--transition-normal);background:var(--glass-bg)}.photo-upload:hover{border-color:var(--primary-500);background:#0ea5e90d}.photo-upload.has-photo{border-style:solid;padding:0;overflow:hidden}.photo-upload-icon{width:48px;height:48px;margin:0 auto var(--space-md);color:var(--text-muted)}.photo-upload-text{color:var(--text-secondary);margin-bottom:var(--space-xs);font-weight:500}.photo-upload-hint{color:var(--text-muted);font-size:.875rem}.photo-preview{aspect-ratio:16/9;object-fit:cover;width:100%;height:auto}.skeleton{background:linear-gradient(90deg, var(--bg-tertiary) 0%, var(--bg-secondary) 50%, var(--bg-tertiary) 100%);border-radius:var(--radius-md);background-size:200% 100%;animation:1.5s infinite shimmer}.spinner{border:2px solid var(--glass-border);border-top-color:var(--primary-500);border-radius:50%;width:24px;height:24px;animation:.6s linear infinite spin}.loader-screen{justify-content:center;align-items:center;gap:var(--space-lg);flex-direction:column;flex:1;display:flex}.loader-text{color:var(--text-secondary);font-weight:500}.toast{bottom:calc(var(--space-lg) + env(safe-area-inset-bottom));padding:var(--space-md) var(--space-lg);background:var(--bg-secondary);border:1px solid var(--glass-border);border-radius:var(--radius-lg);z-index:100;max-width:calc(100% - 2 * var(--space-lg));position:fixed;left:50%;transform:translate(-50%);box-shadow:0 10px 40px #00000080}.toast-success{border-color:var(--success-500)}.toast-error{border-color:var(--danger-500)}.login-screen{padding:var(--space-xl) 0;flex-direction:column;flex:1;justify-content:center;display:flex}.login-logo{width:80px;height:80px;margin:0 auto var(--space-xl);background:var(--gradient-primary);border-radius:var(--radius-2xl);justify-content:center;align-items:center;animation:2s infinite pulse-glow;display:flex}.login-title{text-align:center;margin-bottom:var(--space-xs);background:var(--gradient-primary);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:2rem;font-weight:800}.login-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:var(--space-2xl)}.info-banner{align-items:center;gap:var(--space-md);padding:var(--space-md);border-radius:var(--radius-lg);margin-bottom:var(--space-xl);background:#0ea5e91a;border:1px solid #0ea5e933;display:flex}.info-banner-icon{background:var(--primary-500);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;display:flex}.info-banner-text{flex:1}.info-banner-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem}.info-banner-value{color:var(--text-primary);font-weight:600}.summary-header{text-align:center;margin-bottom:var(--space-2xl)}.summary-icon{width:80px;height:80px;margin:0 auto var(--space-lg);background:var(--gradient-success);border-radius:50%;justify-content:center;align-items:center;display:flex}.summary-title{margin-bottom:var(--space-xs);font-size:1.5rem;font-weight:700}.summary-subtitle{color:var(--text-secondary)}.summary-details{background:var(--glass-bg);border-radius:var(--radius-lg);padding:var(--space-lg);margin-bottom:var(--space-lg)}.summary-row{padding:var(--space-sm) 0;border-bottom:1px solid var(--glass-border);justify-content:space-between;display:flex}.summary-row:last-child{border-bottom:none}.summary-label{color:var(--text-secondary)}.summary-value{font-weight:600}.error-message{align-items:center;gap:var(--space-sm);padding:var(--space-md);border-radius:var(--radius-lg);color:var(--danger-500);margin-bottom:var(--space-lg);background:#ef44441a;border:1px solid #ef444433;font-size:.875rem;display:flex}.scrollable-list{margin:0 calc(-1 * var(--space-md));padding:0 var(--space-md);-webkit-overflow-scrolling:touch;flex:1;overflow-y:auto}.bottom-action-bar{background:linear-gradient(to top, var(--bg-primary) 0%, var(--bg-primary) 80%, transparent 100%);padding:var(--space-lg) 0;padding-bottom:calc(var(--space-lg) + env(safe-area-inset-bottom));margin-top:auto;position:sticky;bottom:0;left:0;right:0}.bulk-toggle-container{gap:var(--space-sm);margin-bottom:var(--space-lg);display:flex}.bulk-toggle-btn{padding:var(--space-sm) var(--space-md);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);border:2px solid;flex:1;font-size:.875rem;font-weight:600}.bulk-toggle-btn.present{border-color:var(--success-500);color:var(--success-500);background:0 0}.bulk-toggle-btn.present:hover,.bulk-toggle-btn.present.active{background:var(--success-500);color:#fff}.bulk-toggle-btn.absent{border-color:var(--danger-500);color:var(--danger-500);background:0 0}.bulk-toggle-btn.absent:hover,.bulk-toggle-btn.absent.active{background:var(--danger-500);color:#fff}.search-container{margin-bottom:var(--space-lg);position:relative}.search-icon{left:var(--space-md);color:var(--text-muted);position:absolute;top:50%;transform:translateY(-50%)}.search-input{padding-left:2.75rem}.step-indicator{justify-content:center;align-items:center;gap:var(--space-sm);margin-bottom:var(--space-xl);display:flex}.step-dot{background:var(--bg-tertiary);width:8px;height:8px;transition:all var(--transition-normal);border-radius:50%}.step-dot.active{border-radius:var(--radius-full);background:var(--gradient-primary);width:24px}.step-dot.completed{background:var(--success-500)}@supports (padding:max(0px)){.app-container{padding-left:max(var(--space-md), env(safe-area-inset-left));padding-right:max(var(--space-md), env(safe-area-inset-right))}}button,a,.toggle-switch,.student-card,.photo-upload{-webkit-tap-highlight-color:transparent}@media (pointer:coarse){.btn,.form-input{min-height:48px}}.toast{align-items:center;display:flex}@media (min-width:480px){.app-container{padding:var(--space-xl)}}@supports (-webkit-touch-callout:none){.screen{min-height:-webkit-fill-available}}