@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";:root{--font: "Inter", sans-serif;--bg: #f4f6fb;--surface: #ffffff;--surface2: #f0f2f8;--border: #e2e6f0;--text: #0f172a;--text-muted: #64748b;--primary: #6366f1;--primary-rgb: 99,102,241;--primary-dark: #4f46e5;--primary-light: #e0e7ff;--secondary: #0ea5e9;--secondary-rgb: 14,165,233;--accent: #8b5cf6;--accent-rgb: 139,92,246;--success: #10b981;--success-rgb: 16,185,129;--warning: #f59e0b;--warning-rgb: 245,158,11;--danger: #ef4444;--danger-rgb: 239,68,68;--sidebar-w: 260px;--radius: 14px;--radius-sm: 8px;--shadow: 0 4px 24px rgba(99,102,241,.08);--shadow-md: 0 8px 32px rgba(99,102,241,.14);--transition: .2s ease}[data-theme=dark]{--bg: #0d0f1a;--surface: #161929;--surface2: #1e2235;--border: #2a2f4a;--text: #f1f5f9;--text-muted: #94a3b8;--primary: #818cf8;--primary-dark: #6366f1;--primary-light: #1e1f4a;--accent: #a78bfa;--success: #34d399;--success-light: #064e3b33;--warning: #fbbf24;--warning-light: #78350f33;--danger: #f87171;--danger-light: #7f1d1d33;--shadow: 0 4px 24px rgba(0,0,0,.35);--shadow-md: 0 8px 32px rgba(0,0,0,.5)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6;transition:background var(--transition),color var(--transition)}a{text-decoration:none;color:inherit}button{cursor:pointer;font-family:var(--font)}input,textarea,select{font-family:var(--font)}ul{list-style:none}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--primary);border-radius:99px}.flex{display:flex}.flex-col{display:flex;flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-1{gap:4px}.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}.w-full{width:100%}.h-full{height:100%}.text-sm{font-size:.85rem}.text-muted{color:var(--text-muted)}.font-semibold{font-weight:600}.font-bold{font-weight:700}.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.input{width:100%;padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--surface2);color:var(--text);font-size:.95rem;transition:border-color var(--transition),box-shadow var(--transition);outline:none}.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.input::placeholder{color:var(--text-muted)}select.input{appearance:none}textarea.input{resize:vertical;min-height:80px}.label{font-size:.82rem;font-weight:600;color:var(--text-muted);margin-bottom:5px;display:block;text-transform:uppercase;letter-spacing:.04em}.form-group{margin-bottom:16px}.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 18px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;border:none;transition:all var(--transition);white-space:nowrap}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 4px 14px #6366f159}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px #6366f166}.btn-primary:active{transform:translateY(0)}.btn-ghost{background:transparent;color:var(--text-muted);border:1.5px solid var(--border)}.btn-ghost:hover{background:var(--surface2);color:var(--text)}.btn-danger{background:var(--danger-light);color:var(--danger);border:1.5px solid var(--danger)}.btn-danger:hover{background:var(--danger);color:#fff}.btn-success{background:var(--success-light);color:var(--success);border:1.5px solid var(--success)}.btn-success:hover{background:var(--success);color:#fff}.btn-sm{padding:6px 12px;font-size:.82rem}.btn-icon{padding:8px;border-radius:var(--radius-sm);border:none;background:var(--surface2);color:var(--text-muted);transition:all var(--transition)}.btn-icon:hover{background:var(--primary-light);color:var(--primary)}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none!important}.card{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:all var(--transition)}.card:hover{box-shadow:var(--shadow-md)}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:99px;font-size:.75rem;font-weight:600}.badge-pending{background:var(--warning-light);color:var(--warning)}.badge-completed,.badge-easy{background:var(--success-light);color:var(--success)}.badge-medium{background:var(--warning-light);color:var(--warning)}.badge-hard{background:var(--danger-light);color:var(--danger)}.badge-category{background:var(--primary-light);color:var(--primary)}.app-layout{display:flex;min-height:100vh}.main-content{flex:1;margin-left:var(--sidebar-w);min-height:100vh;transition:margin-left var(--transition)}.page-wrapper{padding:32px;max-width:1200px}.page-header{margin-bottom:28px}.page-header h1{font-size:1.8rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.page-header p{color:var(--text-muted);margin-top:4px}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(ellipse at top left,#e0e7ff 0%,var(--bg) 50%,#f3e8ff 100%);padding:20px}[data-theme=dark] .auth-page{background:radial-gradient(ellipse at top left,#1e1f4a 0%,var(--bg) 50%,#2d1b4f 100%)}.auth-card{width:100%;max-width:420px;padding:40px}.auth-logo{display:flex;align-items:center;gap:10px;margin-bottom:28px}.auth-logo-icon{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.4rem}.auth-logo-text{font-size:1.4rem;font-weight:800}.auth-title{font-size:1.5rem;font-weight:700;margin-bottom:6px}.auth-sub{color:var(--text-muted);font-size:.9rem;margin-bottom:28px}.auth-divider{text-align:center;color:var(--text-muted);font-size:.85rem;margin:18px 0;position:relative}.auth-divider:before{content:"";position:absolute;left:0;top:50%;width:42%;height:1px;background:var(--border)}.auth-divider:after{content:"";position:absolute;right:0;top:50%;width:42%;height:1px;background:var(--border)}.auth-footer{text-align:center;margin-top:22px;font-size:.88rem;color:var(--text-muted)}.auth-footer a{color:var(--primary);font-weight:600}.auth-footer a:hover{text-decoration:underline}.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;background:var(--surface);border-right:1.5px solid var(--border);display:flex;flex-direction:column;z-index:100;padding:20px 16px;transition:background var(--transition),border-color var(--transition)}.sidebar-logo{display:flex;align-items:center;gap:10px;padding:4px 8px 20px;border-bottom:1.5px solid var(--border);margin-bottom:18px}.sidebar-logo-icon{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}.sidebar-logo-text{font-weight:800;font-size:1.1rem}.sidebar-logo-sub{font-size:.68rem;color:var(--text-muted);font-weight:500}.sidebar-nav{flex:1;display:flex;flex-direction:column;gap:4px}.nav-link{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:var(--radius-sm);color:var(--text-muted);font-size:.92rem;font-weight:500;transition:all var(--transition);border:none;background:none;width:100%;text-align:left}.nav-link:hover{background:var(--surface2);color:var(--text)}.nav-link.active{background:var(--primary-light);color:var(--primary);font-weight:600}.nav-link .nav-icon{width:20px;height:20px;flex-shrink:0}.sidebar-footer{border-top:1.5px solid var(--border);padding-top:14px;display:flex;flex-direction:column;gap:8px}.user-chip{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius-sm);background:var(--surface2)}.user-avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:.85rem;flex-shrink:0}.user-info{flex:1;min-width:0}.user-name{font-size:.88rem;font-weight:600}.user-email{font-size:.72rem;color:var(--text-muted)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:28px}.stat-card{padding:20px;border-radius:var(--radius);position:relative;overflow:hidden}.stat-card:after{content:"";position:absolute;top:-18px;right:-18px;width:70px;height:70px;border-radius:50%;opacity:.12;background:currentColor}.stat-card-total{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff}.stat-card-completed{background:linear-gradient(135deg,#10b981,#34d399);color:#fff}.stat-card-pending{background:linear-gradient(135deg,#f59e0b,#fbbf24);color:#fff}.stat-card-pct{background:linear-gradient(135deg,#3b82f6,#60a5fa);color:#fff}.stat-icon{font-size:1.5rem;margin-bottom:8px}.stat-value{font-size:2.2rem;font-weight:800;line-height:1}.stat-label{font-size:.82rem;opacity:.85;margin-top:4px}.progress-bar-wrap{background:var(--surface2);border-radius:99px;overflow:hidden;height:8px}.progress-bar-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--primary),var(--accent));transition:width 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var(--border)}.modal-overlay{position:fixed;inset:0;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:200;padding:20px;animation:fadeIn .15s ease}.modal{background:var(--surface);border-radius:var(--radius);padding:28px;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;animation:slideUp .2s ease}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}.modal-title{font-size:1.2rem;font-weight:700}.modal-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}@media(max-width:480px){.modal-grid{grid-template-columns:1fr}}.chat-panel{position:fixed;right:20px;bottom:20px;z-index:150}.chat-toggle-btn{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border:none;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px #6366f166;cursor:pointer;transition:transform var(--transition),box-shadow var(--transition)}.chat-toggle-btn:hover{transform:scale(1.08);box-shadow:0 10px 30px #6366f180}.chat-window{position:absolute;bottom:68px;right:0;width:360px;background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-md);display:flex;flex-direction:column;overflow:hidden;animation:slideUp .2s ease}.chat-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff}.chat-header-title{font-weight:700;font-size:.95rem}.chat-messages{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px;max-height:340px}.msg{max-width:85%;padding:10px 13px;border-radius:14px;font-size:.875rem;line-height:1.5}.msg-user{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;align-self:flex-end;border-bottom-right-radius:4px}.msg-ai{background:var(--surface2);color:var(--text);align-self:flex-start;border-bottom-left-radius:4px}.msg-thinking{display:flex;gap:4px;align-items:center;padding:10px 14px}.msg-thinking span{width:7px;height:7px;border-radius:50%;background:var(--text-muted);animation:bounce 1s infinite}.msg-thinking span:nth-child(2){animation-delay:.15s}.msg-thinking span:nth-child(3){animation-delay:.3s}.chat-input-row{display:flex;gap:8px;padding:12px 14px;border-top:1.5px solid var(--border)}.chat-input-row .input{flex:1;padding:8px 12px;font-size:.88rem}.chat-suggestions{display:flex;flex-wrap:wrap;gap:6px;padding:0 14px 12px}.suggestion-chip{padding:4px 10px;border-radius:99px;font-size:.76rem;font-weight:500;border:1.5px solid var(--primary);color:var(--primary);background:var(--primary-light);cursor:pointer;transition:all var(--transition)}.suggestion-chip:hover{background:var(--primary);color:#fff}.charts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px}.chart-card{padding:22px}.chart-title{font-weight:700;font-size:1rem;margin-bottom:18px}.filters-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px;align-items:center}.search-wrap{position:relative;flex:1;min-width:200px}.search-icon{position:absolute;left:11px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none}.search-wrap .input{padding-left:36px}.filter-select{min-width:140px}.streak-card{text-align:center;padding:24px}.streak-number{font-size:3rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.streak-label{color:var(--text-muted);font-size:.9rem;margin-top:2px}.streak-icon{font-size:2rem;margin-bottom:4px}.ai-generate-card{padding:24px;border:2px dashed var(--primary);background:var(--primary-light)}.ai-generate-title{font-weight:700;font-size:1rem;display:flex;align-items:center;gap:8px;color:var(--primary)}.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}.empty-state-icon{font-size:3.5rem;margin-bottom:14px}.empty-state h3{font-size:1.1rem;font-weight:600;color:var(--text);margin-bottom:6px}.spinner{width:20px;height:20px;border:2.5px solid currentColor;border-top-color:transparent;border-radius:50%;animation:spin .7s linear infinite;display:inline-block}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-5px)}}@media(max-width:768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-content{margin-left:0}.page-wrapper{padding:20px}.modal-grid{grid-template-columns:1fr}.chat-window{width:300px}}.projects-grid{display:grid;grid-template-columns:1fr;gap:20px}@media(min-width:992px){.projects-grid{grid-template-columns:repeat(2,1fr)}}.project-card{transition:transform .2s ease,border-color .2s ease;border:1.5px solid var(--border);display:flex;flex-direction:column}.project-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:0 8px 16px -4px #0000001a}.badge-sm{padding:2px 6px;font-size:.7rem;opacity:.9}.modal-body h4{margin-top:0;text-transform:uppercase;letter-spacing:.05em;font-weight:700}