:root{--primary-50: #eff6ff;--primary-100: #dbeafe;--primary-200: #bfdbfe;--primary-300: #93c5fd;--primary-400: #60a5fa;--primary-500: #3b82f6;--primary-600: #2563eb;--primary-700: #1d4ed8;--primary-800: #1e40af;--primary-900: #1e3a8a;--accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--accent-gradient-hover: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);--success-500: #22c55e;--success-600: #16a34a;--warning-500: #f59e0b;--danger-500: #ef4444;--danger-600: #dc2626;--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--bg-card: rgba(30, 41, 59, .8);--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--border-color: rgba(148, 163, 184, .2);--border-color-hover: rgba(148, 163, 184, .4);--glass-bg: rgba(30, 41, 59, .7);--glass-border: rgba(148, 163, 184, .1);--glass-shadow: 0 8px 32px rgba(0, 0, 0, .3);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-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;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .3);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .3)}[data-theme=light]{--bg-primary: #f8fafc;--bg-secondary: #ffffff;--bg-tertiary: #f1f5f9;--bg-card: rgba(255, 255, 255, .95);--text-primary: #0f172a;--text-secondary: #334155;--text-muted: #64748b;--border-color: rgba(15, 23, 42, .15);--border-color-hover: rgba(15, 23, 42, .3);--glass-bg: rgba(255, 255, 255, .85);--glass-border: rgba(15, 23, 42, .1);--glass-shadow: 0 8px 32px rgba(0, 0, 0, .08);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 6px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .08);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .1)}[data-theme=light] .google-btn{background:#1f2937;color:#fff}[data-theme=light] .google-btn:hover{background:#374151}[data-theme=light] .badge.coach{background:#3b82f626;color:var(--primary-700);border-color:var(--primary-500)}[data-theme=light] .methodology-tag.coaching{background:#22c55e26;color:#15803d}[data-theme=light] .methodology-tag.mentoring{background:#f59e0b26;color:#b45309}[data-theme=light] .leaderboard-item{background:var(--bg-tertiary)}[data-theme=light] .leaderboard-item:hover{background:#e2e8f0}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 80%,rgba(99,102,241,.15) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(139,92,246,.15) 0%,transparent 50%),radial-gradient(circle at 40% 40%,rgba(59,130,246,.1) 0%,transparent 40%);pointer-events:none;z-index:-1}[data-theme=light] body:before{background:radial-gradient(circle at 20% 80%,rgba(99,102,241,.08) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(139,92,246,.08) 0%,transparent 50%),radial-gradient(circle at 40% 40%,rgba(59,130,246,.05) 0%,transparent 40%)}#app{min-height:100vh}.glass{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);box-shadow:var(--glass-shadow)}.hidden{display:none!important}.screen{min-height:100vh}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:var(--spacing-md)}.loader{width:48px;height:48px;border:4px solid var(--bg-tertiary);border-top-color:var(--primary-500);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.login-screen{display:flex;align-items:center;justify-content:center;padding:var(--spacing-lg)}.login-container{width:100%;max-width:420px}.login-card{padding:var(--spacing-2xl);border-radius:var(--radius-2xl);text-align:center}.login-header{margin-bottom:var(--spacing-xl)}.logo-icon{font-size:3.5rem;margin-bottom:var(--spacing-md);display:block;filter:drop-shadow(0 4px 8px rgba(0,0,0,.3))}.login-header h1{font-size:2rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--spacing-xs)}.tagline{color:var(--text-secondary);font-size:.95rem}.google-btn{display:flex;align-items:center;justify-content:center;gap:var(--spacing-md);width:100%;padding:var(--spacing-md) var(--spacing-lg);background:var(--text-primary);color:#1f2937;border:none;border-radius:var(--radius-lg);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition-normal);box-shadow:var(--shadow-md)}.google-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.google-btn:active{transform:translateY(0)}.google-icon{width:20px;height:20px}.login-footer{margin-top:var(--spacing-xl);color:var(--text-muted);font-size:.875rem}.main-screen{display:flex;flex-direction:column;min-height:100vh}.header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md) var(--spacing-xl);position:sticky;top:0;z-index:100;border-radius:0;border-bottom:1px solid var(--border-color)}.header-left{display:flex;align-items:center;gap:var(--spacing-sm)}.header-left .logo-icon{font-size:1.75rem;margin-bottom:0}.app-title{font-size:1.25rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-right{display:flex;align-items:center;gap:var(--spacing-lg)}.user-info{display:flex;align-items:center;gap:var(--spacing-sm)}.user-avatar{width:36px;height:36px;border-radius:var(--radius-full);object-fit:cover;border:2px solid var(--primary-500)}.user-name{font-weight:500;color:var(--text-primary)}.badge{padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-full);font-size:.75rem;font-weight:600;text-transform:uppercase}.badge.admin{background:var(--accent-gradient);color:#fff}.badge.coach{background:#3b82f633;color:var(--primary-400);border:1px solid var(--primary-500)}.nav-tabs{display:flex;gap:var(--spacing-xs);padding:var(--spacing-md) var(--spacing-xl);background:var(--bg-secondary);border-bottom:1px solid var(--border-color);overflow-x:auto}.tab-btn{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);background:transparent;border:none;border-radius:var(--radius-lg);color:var(--text-secondary);font-size:.95rem;font-weight:500;cursor:pointer;transition:all var(--transition-normal);white-space:nowrap}.tab-btn:hover{background:var(--bg-tertiary);color:var(--text-primary)}.tab-btn.active{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-md)}.tab-icon{font-size:1.1rem}.main-content{flex:1;padding:var(--spacing-xl);max-width:1200px;margin:0 auto;width:100%}.tab-content{animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.section-header{margin-bottom:var(--spacing-xl)}.section-header h2{font-size:1.5rem;font-weight:700;margin-bottom:var(--spacing-xs)}.section-desc{color:var(--text-secondary)}.session-form{padding:var(--spacing-xl);border-radius:var(--radius-xl)}.form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-lg)}.form-group{margin-bottom:var(--spacing-lg)}.form-group label{display:block;margin-bottom:var(--spacing-sm);font-weight:500;color:var(--text-primary)}.required{color:var(--danger-500)}.form-group input,.form-group select{width:100%;padding:var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:1rem;font-family:inherit;transition:all var(--transition-fast)}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--primary-500);box-shadow:0 0 0 3px #3b82f633}.form-group input::placeholder{color:var(--text-muted)}.form-group select option{background:var(--bg-secondary);color:var(--text-primary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);border:none;border-radius:var(--radius-md);font-size:.95rem;font-weight:600;font-family:inherit;cursor:pointer;transition:all var(--transition-normal)}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover{background:var(--accent-gradient-hover);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border-color)}.btn-ghost:hover{background:var(--bg-tertiary);color:var(--text-primary);border-color:var(--border-color-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-secondary);border-color:var(--border-color-hover)}.btn-danger{background:var(--danger-500);color:#fff}.btn-danger:hover{background:var(--danger-600)}.btn-sm{padding:var(--spacing-xs) var(--spacing-md);font-size:.875rem}.btn-lg{padding:var(--spacing-md) var(--spacing-xl);font-size:1.05rem}.btn-full{width:100%}.btn-icon{font-size:1.1rem}.stats-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.stat-card{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-lg);border-radius:var(--radius-xl)}.stat-icon{font-size:2rem;filter:drop-shadow(0 2px 4px rgba(0,0,0,.2))}.stat-info{display:flex;flex-direction:column}.stat-value{font-size:1.75rem;font-weight:700;color:var(--text-primary)}.stat-label{font-size:.875rem;color:var(--text-secondary)}.sessions-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.session-item{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-normal)}.session-item:hover{background:var(--bg-tertiary);transform:translate(4px);border-color:var(--primary-500)}.session-info{display:flex;flex-direction:column;gap:var(--spacing-xs)}.session-coachee{font-weight:600;color:var(--text-primary)}.session-meta{display:flex;align-items:center;gap:var(--spacing-md);font-size:.875rem;color:var(--text-secondary)}.methodology-tag{padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);font-size:.75rem;font-weight:600;text-transform:uppercase}.methodology-tag.coaching{background:#22c55e33;color:var(--success-500)}.methodology-tag.mentoring{background:#f59e0b33;color:var(--warning-500)}.session-actions{display:flex;gap:var(--spacing-sm)}.empty-state{padding:var(--spacing-2xl);text-align:center;color:var(--text-muted)}.empty-icon{font-size:3rem;display:block;margin-bottom:var(--spacing-md);opacity:.5}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-xl);margin-bottom:var(--spacing-xl)}.leaderboard-card,.chart-card{padding:var(--spacing-xl);border-radius:var(--radius-xl)}.card-title{font-size:1.1rem;font-weight:600;margin-bottom:var(--spacing-lg);color:var(--text-primary)}.leaderboard-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.leaderboard-item{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);background:var(--bg-tertiary);border-radius:var(--radius-md);transition:all var(--transition-fast)}.leaderboard-item:hover{background:var(--bg-primary)}.rank{width:28px;height:28px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.875rem;border-radius:var(--radius-full)}.rank.gold{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#1f2937}.rank.silver{background:linear-gradient(135deg,#e5e7eb,#9ca3af);color:#1f2937}.rank.bronze{background:linear-gradient(135deg,#d97706,#b45309);color:#fff}.rank.default{background:var(--bg-secondary);color:var(--text-secondary)}.coach-avatar{width:36px;height:36px;border-radius:var(--radius-full);object-fit:cover}.coach-info{flex:1}.coach-name{font-weight:500;color:var(--text-primary)}.coach-sessions{font-size:.875rem;color:var(--text-secondary)}.chart-container{height:200px;margin-bottom:var(--spacing-md)}.methodology-stats{display:flex;justify-content:center;gap:var(--spacing-xl)}.methodology-stat{display:flex;align-items:center;gap:var(--spacing-sm);font-size:.875rem}.stat-dot{width:12px;height:12px;border-radius:var(--radius-full)}.stat-dot.coaching{background:var(--success-500)}.stat-dot.mentoring{background:var(--warning-500)}.community-stats{padding:var(--spacing-xl);border-radius:var(--radius-xl)}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-lg);text-align:center}.community-stat .stat-value{font-size:2rem;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.community-stat .stat-label{display:block;margin-top:var(--spacing-xs)}.modal{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-lg)}.modal-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{position:relative;width:100%;max-width:480px;border-radius:var(--radius-xl);animation:modalIn .3s ease}@keyframes modalIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.modal-header h3{font-size:1.1rem;font-weight:600}.modal-close:not(.btn){width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--text-secondary);font-size:1.5rem;cursor:pointer;border-radius:var(--radius-md);transition:all var(--transition-fast)}.modal-close:not(.btn):hover{background:var(--bg-tertiary);color:var(--text-primary)}.modal-body{padding:var(--spacing-lg)}.modal-footer{display:flex;justify-content:flex-end;gap:var(--spacing-sm);padding:var(--spacing-lg);border-top:1px solid var(--border-color)}.detail-item{display:flex;justify-content:space-between;padding:var(--spacing-sm) 0;border-bottom:1px solid var(--border-color)}.detail-item:last-child{border-bottom:none}.detail-label{color:var(--text-secondary)}.detail-value{font-weight:500;color:var(--text-primary)}.toast-container{position:fixed;bottom:var(--spacing-xl);right:var(--spacing-xl);display:flex;flex-direction:column;gap:var(--spacing-sm);z-index:1100}.toast{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);animation:toastIn .3s ease;max-width:360px}@keyframes toastIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}.toast.success{border-left:4px solid var(--success-500)}.toast.error{border-left:4px solid var(--danger-500)}.toast.info{border-left:4px solid var(--primary-500)}.toast-icon{font-size:1.25rem}.toast-message{flex:1;font-size:.9rem}.loading-placeholder{padding:var(--spacing-xl);text-align:center;color:var(--text-muted)}@media (max-width: 768px){.header{padding:var(--spacing-md)}.header-right .user-name{display:none}.nav-tabs{padding:var(--spacing-sm) var(--spacing-md)}.tab-text{display:none}.tab-btn{padding:var(--spacing-sm) var(--spacing-md)}.main-content{padding:var(--spacing-md)}.form-row{grid-template-columns:1fr}.stats-row{grid-template-columns:1fr;gap:var(--spacing-md)}.session-item{flex-direction:column;align-items:flex-start;gap:var(--spacing-md)}.session-actions{width:100%;justify-content:flex-end}.toast-container{left:var(--spacing-md);right:var(--spacing-md);bottom:var(--spacing-md)}.toast{max-width:none}}@media (max-width: 480px){.login-card{padding:var(--spacing-xl)}.login-header h1{font-size:1.5rem}.stats-cards,.dashboard-grid{grid-template-columns:1fr}}#user-info-btn{cursor:pointer;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-md);transition:all var(--transition-fast)}#user-info-btn:hover{background:var(--bg-tertiary)}.user-details{display:flex;flex-direction:column;align-items:flex-start}.user-institutional-id{font-size:.75rem;color:var(--text-muted)}.form-hint{display:block;margin-top:var(--spacing-xs);font-size:.75rem;color:var(--text-muted)}.form-group input:disabled{opacity:.6;cursor:not-allowed;background:var(--bg-secondary)}@media (max-width: 768px){.user-details{display:none}#user-info-btn{gap:var(--spacing-xs)}}.theme-toggle{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-full);width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.2rem;transition:all var(--transition-normal)}.theme-toggle:hover{background:var(--bg-secondary);border-color:var(--border-color-hover);transform:rotate(15deg)}.theme-icon-dark,.theme-icon-light{transition:all var(--transition-fast)}[data-theme=light] .theme-icon-dark{display:none}[data-theme=light] .theme-icon-light{display:block}:root .theme-icon-light{display:none}:root .theme-icon-dark{display:block}