@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";button{font-family:var(--font-primary, "Inter", sans-serif);cursor:pointer}input,textarea,select{font-family:var(--font-primary, "Inter", sans-serif)}.sidebar-mobile-toggle{display:none;position:fixed;top:1rem;left:1rem;z-index:1001;background:var(--color-primary);color:#fff;border:none;padding:.5rem;border-radius:var(--radius-sm);cursor:pointer;font-size:1.5rem;box-shadow:var(--shadow-md);transition:background var(--transition-fast)}.sidebar-mobile-toggle:hover{background:var(--color-primary-hover)}@media(max-width:768px){.sidebar-mobile-toggle{display:block}}.sidebar{position:fixed;left:0;top:0;height:100vh;width:280px;background:var(--sidebar-bg);border-right:1px solid var(--sidebar-border);display:flex;flex-direction:column;z-index:1000;overflow-y:auto;transition:transform var(--transition-slow)}@media(max-width:768px){.sidebar{transform:translate(-100%);width:260px}.sidebar.mobile-open{transform:translate(0);box-shadow:0 0 0 100vw #0006}}@media(max-width:400px){.sidebar{width:100vw}}.sidebar-header{padding:1.5rem 1.25rem;border-bottom:1px solid var(--sidebar-border);display:flex;align-items:center;gap:.75rem;flex-shrink:0;justify-content:center}.sidebar-nav{flex:1;padding:.75rem 0;overflow-y:auto}.sidebar-nav::-webkit-scrollbar{width:4px}.sidebar-nav::-webkit-scrollbar-track{background:transparent}.sidebar-nav::-webkit-scrollbar-thumb{background:var(--sidebar-border);border-radius:2px}.sidebar-menu-item{display:flex;flex-direction:column;margin:1px .5rem}.sidebar-menu-button{display:flex;align-items:center;gap:.75rem;width:100%;padding:.7rem .875rem;background:transparent;border:none;text-align:left;cursor:pointer;font-size:.875rem;font-weight:var(--font-weight-medium);color:var(--sidebar-text);border-radius:var(--radius-sm);transition:background var(--transition-fast),color var(--transition-fast)}.sidebar-menu-button:hover{background:var(--sidebar-item-hover-bg);color:#cbd5e1}.sidebar-menu-button.active{background:var(--sidebar-item-active-bg);color:var(--sidebar-text-active);border-left:2px solid var(--sidebar-item-active-border);padding-left:calc(.875rem - 2px)}.menu-icon{display:flex;align-items:center;justify-content:center;width:1.5rem;height:1.5rem;font-size:1.1rem;flex-shrink:0;opacity:.7}.sidebar-menu-button.active .menu-icon,.sidebar-menu-button:hover .menu-icon{opacity:1}.menu-label{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chevron{display:flex;align-items:center;justify-content:center;width:1rem;height:1rem;color:var(--sidebar-text);opacity:.5;transition:transform var(--transition-base),opacity var(--transition-fast);flex-shrink:0}.chevron.expanded{transform:rotate(180deg);opacity:.9}.sidebar-menu-button.active .chevron{opacity:.9}.submenu{display:flex;flex-direction:column;padding:.25rem 0;margin:0 .5rem .25rem 1.75rem;border-left:1px solid var(--sidebar-border);animation:submenuSlide var(--transition-base) ease}@keyframes submenuSlide{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.submenu-item{padding:.55rem .75rem;background:transparent;border:none;text-align:left;cursor:pointer;font-size:.825rem;font-weight:var(--font-weight-regular);color:var(--sidebar-text);transition:color var(--transition-fast),background var(--transition-fast);width:100%;border-radius:var(--radius-sm)}.submenu-item:hover{color:#cbd5e1;background:var(--sidebar-item-hover-bg)}.submenu-item.active{color:var(--color-primary);font-weight:var(--font-weight-medium);background:var(--sidebar-item-active-bg);border-left:2px solid var(--color-primary);padding-left:calc(.75rem - 2px)}.sidebar-footer{border-top:1px solid var(--sidebar-border);padding:.5rem;flex-shrink:0}.sidebar-logout-button{display:flex;align-items:center;gap:.75rem;width:100%;padding:.7rem .875rem;background:transparent;border:none;text-align:left;cursor:pointer;font-size:.875rem;font-weight:var(--font-weight-medium);color:#f87171;border-radius:var(--radius-sm);transition:background var(--transition-fast)}.sidebar-logout-button:hover{background:#ef44441a}.app-with-sidebar{margin-left:280px;transition:margin-left var(--transition-slow)}@media(max-width:768px){.app-with-sidebar{margin-left:0}}:root{--color-primary: #2563EB;--color-primary-hover: #1D4ED8;--color-primary-light: #DBEAFE;--color-primary-ring: rgba(37, 99, 235, .2);--color-success: #22C55E;--color-success-hover: #16A34A;--color-success-light: #DCFCE7;--color-warning: #F59E0B;--color-warning-hover: #D97706;--color-warning-light: #FEF3C7;--color-alert: #EF4444;--color-alert-hover: #DC2626;--color-alert-light: #FEE2E2;--color-navy: #0F172A;--color-slate: #64748B;--color-slate-light: #94A3B8;--color-background: #EEF2F7;--color-surface: #FFFFFF;--color-border: #E2E8F0;--color-border-light: #F1F5F9;--color-text-primary: #0F172A;--color-text-secondary: #64748B;--color-text-disabled: #94A3B8;--sidebar-bg: #0F172A;--sidebar-border: #1E293B;--sidebar-text: #94A3B8;--sidebar-text-active: #FFFFFF;--sidebar-item-active-bg: rgba(37, 99, 235, .15);--sidebar-item-active-border: #2563EB;--sidebar-item-hover-bg: rgba(255, 255, 255, .05);--color-dark-background: #020817;--color-dark-surface: #0F172A;--color-dark-border: #1E293B;--color-dark-text-primary: #E2E8F0;--color-dark-text-secondary: #94A3B8;--font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "Courier New", monospace;--font-size-h1: 28px;--font-size-h2: 22px;--font-size-h3: 18px;--font-size-body: 15px;--font-size-sm: 13px;--font-size-xs: 12px;--font-weight-regular: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--spacing-xs: 6px;--spacing-sm: 12px;--spacing-md: 20px;--spacing-lg: 32px;--spacing-xl: 48px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--radius-full: 9999px;--shadow-xs: 0 1px 3px rgba(15, 23, 42, .08), 0 0 0 1px rgba(15, 23, 42, .05);--shadow-sm: 0 2px 6px rgba(15, 23, 42, .1), 0 0 0 1px rgba(15, 23, 42, .05);--shadow-md: 0 4px 16px rgba(15, 23, 42, .12), 0 0 0 1px rgba(15, 23, 42, .06);--shadow-lg: 0 8px 32px rgba(15, 23, 42, .15), 0 0 0 1px rgba(15, 23, 42, .06);--touch-target-min: 44px;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease}@media(prefers-color-scheme:dark){:root{--color-background: var(--color-dark-background);--color-surface: var(--color-dark-surface);--color-border: var(--color-dark-border);--color-border-light: #1E293B;--color-text-primary: var(--color-dark-text-primary);--color-text-secondary: var(--color-dark-text-secondary);--shadow-xs: 0 1px 2px rgba(0, 0, 0, .3);--shadow-sm: 0 1px 4px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5)}}@media(max-width:768px){:root{--font-size-h1: 22px;--font-size-h2: 18px;--font-size-h3: 16px;--font-size-body: 14px}}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow-x:hidden}body{font-family:var(--font-primary);font-size:var(--font-size-body);font-weight:var(--font-weight-regular);color:var(--color-text-primary);background:var(--color-background);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6}#root{width:100%;min-height:100vh}h1{font-size:var(--font-size-h1);font-weight:var(--font-weight-bold);letter-spacing:-.02em;color:var(--color-text-primary);line-height:1.2}h2{font-size:var(--font-size-h2);font-weight:var(--font-weight-semibold);color:var(--color-text-primary);line-height:1.3}h3{font-size:var(--font-size-h3);font-weight:var(--font-weight-semibold);color:var(--color-text-primary);line-height:1.4}a{color:var(--color-primary);text-decoration:none}a:hover{color:var(--color-primary-hover)}*:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.text-primary{color:var(--color-primary)}.text-success{color:var(--color-success)}.text-warning{color:var(--color-warning)}.text-alert{color:var(--color-alert)}.text-secondary{color:var(--color-text-secondary)}.bg-primary{background-color:var(--color-primary)}.bg-success{background-color:var(--color-success)}.bg-warning{background-color:var(--color-warning)}.bg-alert{background-color:var(--color-alert)}@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.home-page{display:flex;height:100vh;overflow:hidden}.home-page-content{flex:1;display:flex;flex-direction:column;min-width:0;height:100%;overflow:hidden;margin-left:280px}@media(max-width:768px){.home-page-content{margin-left:0}}.home-header{position:sticky;top:0;padding:.875rem 1.75rem;background:var(--color-surface);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-xs);z-index:100;display:flex;align-items:center;gap:.75rem}.home-main{flex:1;min-height:0;padding:2rem;background:#eef2f7!important;overflow-y:auto;min-width:0}@media(max-width:768px){.home-main{padding:1rem}}.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:0;font-size:.8125rem}.breadcrumb-item{display:flex;align-items:center}.breadcrumb-sep{color:var(--color-text-muted, #94a3b8);margin:0 .4rem;font-size:1rem;line-height:1;-webkit-user-select:none;user-select:none}.breadcrumb-link{background:none;border:none;padding:0;cursor:pointer;color:var(--color-text-secondary, #64748b);font-size:inherit;font-weight:500;transition:color .15s}.breadcrumb-link:hover{color:var(--color-primary, #2563eb);text-decoration:underline}.breadcrumb-text{color:var(--color-text-secondary, #64748b);font-weight:500}.breadcrumb-current{color:var(--color-text-primary, #1e293b);font-weight:600}.breadcrumb-back{display:flex;align-items:center;justify-content:center;width:2rem;height:2rem;background:none;border:1px solid var(--color-border, #e2e8f0);border-radius:6px;cursor:pointer;color:var(--color-text-secondary, #64748b);flex-shrink:0;transition:background .15s,color .15s,border-color .15s}.breadcrumb-back:hover{background:var(--color-surface-hover, #f1f5f9);color:var(--color-primary, #2563eb);border-color:var(--color-primary, #2563eb)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-background);padding:1rem}.login-card{background:var(--color-surface);padding:3rem 2.5rem;border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);text-align:center;max-width:420px;width:100%;border:1px solid var(--color-border)}.login-card h1{margin-bottom:.5rem;font-size:var(--font-size-h2);color:var(--color-text-primary)}.login-card p{color:var(--color-text-secondary);margin-bottom:2rem;font-size:.9375rem;line-height:1.6}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.625rem 1.25rem;min-height:var(--touch-target-min);font-size:var(--font-size-body);font-weight:var(--font-weight-semibold);font-family:var(--font-primary);border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff;box-shadow:0 1px 3px #2563eb4d}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover);box-shadow:0 4px 12px #2563eb4d;transform:translateY(-1px)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-success{background:var(--color-success);color:#fff}.btn-success:hover:not(:disabled){background:var(--color-success-hover);transform:translateY(-1px)}.btn-secondary{background:var(--color-surface);color:var(--color-text-primary);border:1px solid var(--color-border);box-shadow:var(--shadow-xs)}.btn-secondary:hover:not(:disabled){background:var(--color-background);border-color:#cbd5e1;transform:translateY(-1px)}.btn-danger{background:transparent;color:var(--color-alert);border:1px solid var(--color-alert)}.btn-danger:hover:not(:disabled){background:var(--color-alert);color:#fff;transform:translateY(-1px)}.add-button{background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius-md);padding:.625rem 1.25rem;font-weight:var(--font-weight-semibold);font-family:var(--font-primary);cursor:pointer;transition:all 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var(--transition-base);min-height:var(--touch-target-min)}.bulk-button:hover:not(:disabled){background:var(--color-primary);color:#fff}.bulk-button:disabled{opacity:.5;cursor:not-allowed}.clear-button{background:transparent;color:var(--color-alert);border:1px solid var(--color-alert);border-radius:var(--radius-md);padding:.625rem 1.25rem;font-weight:var(--font-weight-semibold);font-family:var(--font-primary);cursor:pointer;transition:all var(--transition-base);min-height:var(--touch-target-min)}.clear-button:hover:not(:disabled){background:var(--color-alert);color:#fff}.clear-button:disabled{opacity:.5;cursor:not-allowed}.preview-button{background:var(--color-surface);color:var(--color-primary);border:1px solid var(--color-primary);border-radius:var(--radius-md);padding:.625rem 1.25rem;font-weight:var(--font-weight-semibold);font-family:var(--font-primary);cursor:pointer;transition:all var(--transition-base);min-height:var(--touch-target-min);margin-bottom:.75rem}.preview-button:hover:not(:disabled){background:var(--color-primary);color:#fff}.preview-button:disabled{opacity:.5;cursor:not-allowed}.generate-button{width:100%;background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius-md);padding:.75rem 1.5rem;font-size:var(--font-size-body);font-weight:var(--font-weight-semibold);font-family:var(--font-primary);cursor:pointer;transition:all var(--transition-base);min-height:var(--touch-target-min)}.generate-button:hover:not(:disabled){background:var(--color-primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px #2563eb40}.generate-button:disabled{opacity:.5;cursor:not-allowed}.login-button{display:inline-flex;align-items:center;justify-content:center;gap:.625rem;padding:.75rem 2rem;min-height:var(--touch-target-min);background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius-md);font-size:var(--font-size-body);font-weight:var(--font-weight-semibold);font-family:var(--font-primary);cursor:pointer;transition:all var(--transition-base);box-shadow:0 1px 3px #2563eb4d}.login-button:hover:not(:disabled){background:var(--color-primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px #2563eb4d}.login-button:active:not(:disabled){transform:translateY(0)}.login-button:disabled{opacity:.5;cursor:not-allowed}.logout-button{padding:.625rem 1.25rem;min-height:var(--touch-target-min);background:transparent;color:var(--color-alert);border:1px solid var(--color-alert);border-radius:var(--radius-md);cursor:pointer;font-weight:var(--font-weight-semibold);font-size:var(--font-size-sm);font-family:var(--font-primary);transition:all var(--transition-base)}.logout-button:hover:not(:disabled){background:var(--color-alert);color:#fff;transform:translateY(-1px)}.logout-button:disabled{opacity:.5;cursor:not-allowed}.spinner{width:22px;height:22px;border:2.5px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin .75s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.app-header{position:sticky;top:0;z-index:100;background:var(--color-surface);padding:.875rem 1.75rem;box-shadow:var(--shadow-xs);display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--color-border)}.user-info{display:flex;align-items:center;gap:.75rem}.user-avatar{width:36px;height:36px;border-radius:50%;border:2px solid var(--color-border);object-fit:cover}.user-name{font-weight:var(--font-weight-medium);font-size:var(--font-size-sm);color:var(--color-text-primary)}.error-banner{background:var(--color-alert-light);color:var(--color-alert);padding:.75rem 1.25rem;display:flex;justify-content:space-between;align-items:center;border-left:4px solid var(--color-alert);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium)}.error-banner button{background:none;border:none;color:var(--color-alert);font-size:1.25rem;cursor:pointer;padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;opacity:.7;transition:opacity var(--transition-fast)}.error-banner button:hover{opacity:1}.app-main{width:100%;padding:var(--spacing-md);min-height:calc(100vh - 60px)}.section{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--spacing-md);margin-bottom:var(--spacing-md);box-shadow:var(--shadow-sm);border:1px solid var(--color-border);width:100%}.loading{text-align:center;padding:3rem;color:var(--color-text-secondary)}.course-select,.email-input,.bulk-textarea{width:100%;padding:.625rem .875rem;min-height:var(--touch-target-min);border:1.5px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-body);font-family:var(--font-primary);background:var(--color-surface);color:var(--color-text-primary);transition:border-color var(--transition-base),box-shadow var(--transition-base)}.email-input{min-height:unset}.bulk-textarea{min-height:unset;resize:vertical}.course-select:focus,.email-input:focus,.bulk-textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-ring)}.input-section{margin-bottom:var(--spacing-md)}.input-group{display:flex;gap:.5rem;margin-bottom:.75rem}@media(max-width:768px){.input-group{flex-direction:column}}.bulk-input-container{margin-top:.75rem}.bulk-actions{display:flex;gap:.5rem;margin-top:.5rem}.list-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}.participants-list ul{list-style:none}.participant-item{display:flex;justify-content:space-between;align-items:center;padding:.625rem .875rem;border:1px solid var(--color-border);border-radius:var(--radius-sm);margin-bottom:.375rem;transition:background var(--transition-fast),border-color var(--transition-fast)}.participant-item:hover{background:var(--color-background);border-color:#cbd5e1}.participant-item span{color:var(--color-text-primary);font-family:var(--font-mono);font-size:var(--font-size-sm)}.remove-button{background:none;border:none;color:var(--color-alert);font-size:1.25rem;cursor:pointer;padding:0;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);transition:background var(--transition-fast)}.remove-button:hover{background:var(--color-alert-light)}.empty-message{color:var(--color-text-secondary);text-align:center;padding:var(--spacing-md);font-size:var(--font-size-sm)}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem;margin-bottom:var(--spacing-md)}.stat-card{background:var(--color-surface);padding:1.25rem;border-radius:var(--radius-lg);text-align:center;border:1px solid var(--color-border);box-shadow:var(--shadow-sm);transition:transform var(--transition-base),box-shadow var(--transition-base)}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.stat-card.present{background:var(--color-success-light);border-color:#86efac}.stat-card.absent{background:var(--color-alert-light);border-color:#fca5a5}.stat-value{font-size:2rem;font-weight:var(--font-weight-bold);color:var(--color-text-primary);line-height:1}.stat-label{color:var(--color-text-secondary);font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);text-transform:uppercase;letter-spacing:.5px;margin-top:.375rem}.preview{margin:var(--spacing-md) 0;border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden;background:var(--color-background)}.preview h3{padding:.875rem 1rem;background:var(--color-surface);border-bottom:1px solid var(--color-border);font-size:.9375rem}.preview-table{width:100%;border-collapse:collapse}.preview-table th{background:var(--color-background);padding:.625rem .875rem;text-align:left;font-weight:var(--font-weight-semibold);font-size:var(--font-size-xs);text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-secondary);border-bottom:1.5px solid var(--color-border);position:sticky;top:0}.preview-table td{padding:.625rem .875rem;border-bottom:1px solid var(--color-border-light);font-size:var(--font-size-sm)}.present-row{background:#22c55e0f}.present-row:hover{background:#22c55e1a}.absent-row{background:#ef44440a}.absent-row:hover{background:#ef444414}.status-badge{display:inline-flex;align-items:center;padding:.2rem .625rem;border-radius:var(--radius-full);font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);letter-spacing:.3px}.status-badge.present{background:var(--color-success-light);color:#15803d}.status-badge.absent{background:var(--color-alert-light);color:#b91c1c}.warning-message{text-align:center;color:var(--color-alert);margin-top:.75rem;font-weight:var(--font-weight-medium);font-size:var(--font-size-sm)}.course-selector h2{margin-bottom:.75rem}.participants-container h2,.attendance-generator h2{margin-bottom:var(--spacing-md)}@media(max-width:768px){.app-main{padding:.75rem}.section{padding:1rem}.stats{grid-template-columns:repeat(2,1fr)}.login-card{padding:2rem 1.25rem}.generate-button{position:sticky;bottom:.75rem;z-index:10;box-shadow:var(--shadow-lg)}}