/* Pointit AI — Design System v3 */
@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,300;12..96,400;12..96,500;12..96,600;12..96,700;12..96,800&family=Lora:ital,wght@0,500;0,600;1,500&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --primary:#6c5ce7;--primary-dark:#5a4bd1;--primary-light:#a29bfe;--primary-subtle:#f0eeff;
  --accent:#00b894;--accent-dark:#00a381;
  --amber:#e17055;--amber-light:#ffeaa7;
  --success:#00b894;--success-light:#d4f5ec;
  --warning:#fdcb6e;--warning-dark:#e17055;--warning-light:#fff5d6;
  --danger:#d63031;--danger-light:#ffeaea;
  --info:#0984e3;--info-light:#dff0ff;
  --bg:#faf9f7;--surface:#ffffff;--surface-2:#f5f4f2;--surface-3:#eeece9;
  --border:#e8e4df;--border-strong:#d4cec8;
  --text:#1a1714;--text-2:#3d3530;--text-3:#7a7268;--text-4:#b0a89e;
  --sidebar-bg:#12110e;--sidebar-text:#a09890;--sidebar-hover:#1e1c18;
  --sidebar-active-bg:rgba(108,92,231,.18);--sidebar-active-text:#c4b8ff;
  --sidebar-width:256px;--sidebar-border:rgba(255,255,255,.05);
  --radius-xs:6px;--radius:10px;--radius-md:14px;--radius-lg:18px;--radius-xl:24px;--radius-full:9999px;
  --shadow-xs:0 1px 3px rgba(26,23,20,.06);
  --shadow-sm:0 2px 8px rgba(26,23,20,.08);
  --shadow:0 4px 20px rgba(26,23,20,.09),0 1px 4px rgba(26,23,20,.05);
  --shadow-md:0 8px 32px rgba(26,23,20,.11),0 2px 8px rgba(26,23,20,.06);
  --shadow-lg:0 20px 60px rgba(26,23,20,.14),0 4px 16px rgba(26,23,20,.07);
  --shadow-primary:0 6px 24px rgba(108,92,231,.3);
  --t:0.18s ease;--t-slow:0.35s ease;
  --font-display:'Bricolage Grotesque',sans-serif;
  --font-body:'Bricolage Grotesque',sans-serif;
  --font-serif:'Lora',serif;
  --font-mono:'JetBrains Mono',monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:15px;scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);line-height:1.65;min-height:100vh;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}
button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit}

/* Layout */
.app-layout{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-width);background:var(--sidebar-bg);position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column;overflow:hidden;z-index:100;transition:transform var(--t-slow);border-right:1px solid var(--sidebar-border)}
.sidebar-logo{padding:22px 18px 18px;border-bottom:1px solid var(--sidebar-border);flex-shrink:0}
.logo-mark{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-icon{width:34px;height:34px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:17px;box-shadow:0 4px 14px rgba(108,92,231,.4);flex-shrink:0}
.logo-text{font-family:var(--font-display);font-size:18px;font-weight:700;color:#f5f0ff;letter-spacing:-.3px}
.sidebar-nav{flex:1;padding:14px 10px;overflow-y:auto;scrollbar-width:none}
.sidebar-nav::-webkit-scrollbar{display:none}
.sidebar-section-label{font-size:9.5px;font-weight:700;color:rgba(160,152,144,.4);text-transform:uppercase;letter-spacing:1.2px;padding:10px 10px 3px}
.nav-item{display:flex;align-items:center;gap:9px;padding:9px 10px;border-radius:var(--radius);color:var(--sidebar-text);font-size:13.5px;font-weight:500;transition:all var(--t);margin-bottom:1px;position:relative;text-decoration:none}
.nav-item:hover{background:var(--sidebar-hover);color:rgba(255,255,255,.9);text-decoration:none}
.nav-item.active{background:var(--sidebar-active-bg);color:var(--sidebar-active-text)}
.nav-item.active::before{content:'';position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:0 2px 2px 0;background:var(--primary-light)}
.nav-icon{width:17px;height:17px;opacity:.65;flex-shrink:0}
.nav-item.active .nav-icon,.nav-item:hover .nav-icon{opacity:1}
.nav-badge{margin-left:auto;background:var(--primary);color:white;font-size:10px;font-weight:700;padding:2px 7px;border-radius:var(--radius-full);min-width:18px;text-align:center}
.sidebar-footer{padding:12px;border-top:1px solid var(--sidebar-border);flex-shrink:0}
.user-mini{display:flex;align-items:center;gap:9px;padding:9px;border-radius:var(--radius);transition:background var(--t);text-decoration:none;margin-top:4px}
.user-mini:hover{background:var(--sidebar-hover);text-decoration:none}
.user-mini-avatar{width:30px;height:30px;border-radius:50%;object-fit:cover;flex-shrink:0;border:1.5px solid rgba(255,255,255,.12)}
.user-mini-name{font-size:13px;font-weight:600;color:rgba(255,255,255,.85)}
.user-mini-plan{font-size:10.5px;color:var(--sidebar-text)}
.main-content{margin-left:var(--sidebar-width);flex:1;display:flex;flex-direction:column;min-height:100vh;min-width:0}
.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:0 24px;height:60px;display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:50}
.topbar-title{font-family:var(--font-display);font-size:18px;font-weight:600;color:var(--text);flex:1}
.topbar-actions{display:flex;align-items:center;gap:6px}
.page-content{padding:24px;flex:1}

/* Cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-xs);transition:box-shadow var(--t)}
.card:hover{box-shadow:var(--shadow-sm)}
.card.p-0{padding:0}
.card-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:18px;gap:12px}
.card-title{font-family:var(--font-display);font-size:15.5px;font-weight:700;color:var(--text)}
.card-subtitle{font-size:13px;color:var(--text-3);margin-top:2px;line-height:1.4}

/* Stat cards */
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;position:relative;overflow:hidden;transition:box-shadow var(--t),transform var(--t)}
.stat-card:hover{box-shadow:var(--shadow);transform:translateY(-1px)}
.stat-card::after{content:'';position:absolute;top:0;left:0;right:0;height:3px}
.stat-card.purple::after{background:linear-gradient(90deg,var(--primary),var(--primary-light))}
.stat-card.cyan::after{background:linear-gradient(90deg,var(--accent),#55efc4)}
.stat-card.green::after{background:linear-gradient(90deg,#00b894,#55efc4)}
.stat-card.amber::after{background:linear-gradient(90deg,var(--amber),var(--warning))}
.stat-label{font-size:11px;font-weight:700;color:var(--text-3);text-transform:uppercase;letter-spacing:.6px;margin-bottom:10px}
.stat-value{font-family:var(--font-display);font-size:30px;font-weight:800;color:var(--text);line-height:1;margin-bottom:5px}
.stat-change{font-size:12px;color:var(--text-3)}.stat-change.up{color:var(--success)}.stat-change.down{color:var(--danger)}
.stat-icon{width:38px;height:38px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:18px;position:absolute;top:18px;right:18px}
.stat-icon.purple{background:var(--primary-subtle)}.stat-icon.cyan{background:#dcfdf4}.stat-icon.green{background:var(--success-light)}.stat-icon.amber{background:var(--warning-light)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border-radius:var(--radius);font-size:13.5px;font-weight:600;border:none;transition:all var(--t);white-space:nowrap;cursor:pointer;text-decoration:none;line-height:1.2;letter-spacing:-.1px;font-family:inherit}
.btn:hover{text-decoration:none;transform:translateY(-1px)}.btn:active{transform:translateY(0)}
.btn-primary{background:var(--primary);color:white;box-shadow:var(--shadow-primary)}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 8px 28px rgba(108,92,231,.4)}
.btn-accent{background:var(--accent);color:white}.btn-accent:hover{background:var(--accent-dark)}
.btn-success{background:var(--success);color:white}
.btn-danger{background:var(--danger);color:white}
.btn-warning{background:var(--warning-dark);color:white}
.btn-outline{background:transparent;border:1.5px solid var(--border-strong);color:var(--text-2)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-subtle)}
.btn-ghost{background:transparent;color:var(--text-2)}.btn-ghost:hover{background:var(--surface-2);color:var(--text)}
.btn-sm{padding:6px 12px;font-size:12.5px;border-radius:var(--radius-xs)}
.btn-lg{padding:13px 26px;font-size:15px;border-radius:var(--radius-md)}
.btn-icon{padding:8px;border-radius:var(--radius);background:var(--surface-2);border:none;color:var(--text-3)}
.btn-icon:hover{background:var(--surface-3);color:var(--text)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}

/* Forms */
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:6px}
.form-input{width:100%;padding:10px 13px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:14px;font-family:inherit;color:var(--text);background:var(--surface);transition:border-color var(--t),box-shadow var(--t);outline:none}
.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(108,92,231,.1)}
.form-input::placeholder{color:var(--text-4)}
select.form-input{cursor:pointer}textarea.form-input{resize:vertical;min-height:82px;line-height:1.6}
.form-help{font-size:12px;color:var(--text-3);margin-top:4px}
.form-error{font-size:12px;color:var(--danger);margin-top:4px}

/* Badges */
.badge{display:inline-flex;align-items:center;gap:3px;padding:3px 8px;border-radius:var(--radius-full);font-size:10.5px;font-weight:700;text-transform:uppercase;letter-spacing:.3px}
.badge-primary{background:var(--primary-subtle);color:var(--primary)}
.badge-success{background:var(--success-light);color:#027860}
.badge-warning{background:var(--warning-light);color:#a05c00}
.badge-danger{background:var(--danger-light);color:var(--danger)}
.badge-info{background:var(--info-light);color:var(--info)}
.badge-gray{background:var(--surface-2);color:var(--text-3)}
.plan-free{background:var(--surface-2);color:var(--text-3)}
.plan-student{background:var(--info-light);color:#1a65b5}
.plan-pro{background:var(--primary-subtle);color:var(--primary-dark)}
.plan-university{background:#fff5e0;color:#a05c00}
.plan-stream{background:linear-gradient(135deg,#1e3a5f,#2d6a9f);color:white;font-weight:700}

/* Progress */
.progress-bar{height:5px;background:var(--surface-3);border-radius:var(--radius-full);overflow:hidden}
.progress-fill{height:100%;border-radius:var(--radius-full);background:var(--primary);transition:width .6s ease}
.progress-fill.green{background:var(--success)}.progress-fill.amber{background:var(--warning-dark)}.progress-fill.red{background:var(--danger)}

/* Alerts */
.alert{padding:12px 16px;border-radius:var(--radius);font-size:14px;display:flex;align-items:flex-start;gap:10px;margin-bottom:16px;border-left:3px solid}
.alert-success{background:var(--success-light);color:#024f3b;border-color:var(--success)}
.alert-error{background:var(--danger-light);color:#961f1f;border-color:var(--danger)}
.alert-warning{background:var(--warning-light);color:#7a4a00;border-color:var(--warning-dark)}
.alert-info{background:var(--info-light);color:#0a4d8c;border-color:var(--info)}

/* Tables */
.table-wrapper{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th{padding:10px 14px;font-size:10.5px;font-weight:700;text-transform:uppercase;letter-spacing:.6px;color:var(--text-3);border-bottom:1.5px solid var(--border);text-align:left;white-space:nowrap;background:var(--surface)}
td{padding:13px 14px;font-size:13.5px;color:var(--text-2);border-bottom:1px solid var(--border);vertical-align:middle}
tr:hover td{background:var(--surface-2)}tr:last-child td{border-bottom:none}

/* Grids */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid-auto{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px}

/* Session cards */
.session-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px;transition:all var(--t);cursor:pointer;position:relative;overflow:hidden;display:block}
.session-card::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3.5px;background:var(--subject-color,var(--primary));border-radius:0 2px 2px 0}
.session-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--border-strong);text-decoration:none}
.session-title{font-family:var(--font-display);font-size:14.5px;font-weight:700;color:var(--text);line-height:1.3}
.session-meta{font-size:12px;color:var(--text-3);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.session-status{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:700;padding:3px 8px;border-radius:var(--radius-full)}
.session-status.done{background:var(--success-light);color:#027860}
.session-status.pending{background:var(--warning-light);color:#a05c00}
.session-status.transcribing{background:var(--info-light);color:var(--info)}
.session-status.analyzing{background:var(--primary-subtle);color:var(--primary)}
.session-status.failed{background:var(--danger-light);color:var(--danger)}

/* Flashcard */
.flashcard-container{perspective:1300px}
.flashcard{width:100%;max-width:620px;height:270px;position:relative;transform-style:preserve-3d;transition:transform .5s cubic-bezier(.4,0,.2,1);cursor:pointer;margin:0 auto}
.flashcard.flipped{transform:rotateY(180deg)}
.flashcard-face{position:absolute;inset:0;background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius-xl);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:36px;backface-visibility:hidden;-webkit-backface-visibility:hidden;box-shadow:var(--shadow-md)}
.flashcard-face.back{transform:rotateY(180deg);background:linear-gradient(135deg,var(--primary-subtle),#f0f8ff);border-color:var(--primary-light)}
.flashcard-label{font-size:9px;font-weight:800;text-transform:uppercase;letter-spacing:1.2px;color:var(--text-4);margin-bottom:14px}
.flashcard-text{font-size:18px;color:var(--text);text-align:center;line-height:1.55;font-weight:500}
.rating-btns{display:flex;gap:10px;justify-content:center}
.rating-btn{padding:10px 22px;border-radius:var(--radius);font-size:13.5px;font-weight:700;border:none;cursor:pointer;transition:all var(--t)}
.rating-btn:hover{transform:translateY(-2px)}
.rating-btn.again{background:var(--danger-light);color:var(--danger)}
.rating-btn.hard{background:var(--warning-light);color:#a05c00}
.rating-btn.good{background:var(--primary-subtle);color:var(--primary)}
.rating-btn.easy{background:var(--success-light);color:#027860}

/* Chat */
.chat-container{display:flex;flex-direction:column;height:510px}
.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;scrollbar-width:thin;scrollbar-color:var(--border) transparent}
.chat-bubble{max-width:82%;padding:11px 16px;border-radius:var(--radius-md);font-size:14px;line-height:1.6}
.chat-bubble.user{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:white;align-self:flex-end;border-bottom-right-radius:4px}
.chat-bubble.assistant{background:var(--surface-2);color:var(--text);align-self:flex-start;border-bottom-left-radius:4px;border:1px solid var(--border)}
.chat-bubble.assistant code{background:var(--surface-3);padding:1px 5px;border-radius:4px;font-size:12px}
.chat-input-row{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--border);background:var(--surface)}
.chat-mode-pills{display:flex;gap:5px;padding:8px 16px;overflow-x:auto;scrollbar-width:none}
.chat-mode-pills::-webkit-scrollbar{display:none}
.chat-mode-pill{padding:5px 13px;border-radius:var(--radius-full);font-size:12px;font-weight:700;border:1.5px solid var(--border);background:var(--surface);color:var(--text-3);cursor:pointer;white-space:nowrap;transition:all var(--t)}
.chat-mode-pill.active,.chat-mode-pill:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-subtle)}

/* Heatmap */
.heatmap{display:flex;flex-wrap:wrap;gap:3px}
.heatmap-cell{width:12px;height:12px;border-radius:2px;background:var(--surface-3)}
.heatmap-cell[data-level="1"]{background:#d8d0ff}
.heatmap-cell[data-level="2"]{background:#a29bfe}
.heatmap-cell[data-level="3"]{background:#6c5ce7}
.heatmap-cell[data-level="4"]{background:#3d2fa3}

/* Streak */
.streak-badge{display:inline-flex;align-items:center;gap:5px;background:linear-gradient(135deg,#e17055,#fdcb6e);color:white;padding:4px 12px;border-radius:var(--radius-full);font-size:13px;font-weight:700;box-shadow:0 4px 12px rgba(225,112,85,.35)}

/* Exam countdown */
.exam-countdown{font-family:var(--font-display);font-size:32px;font-weight:800;color:var(--primary);line-height:1}
.exam-countdown.urgent{color:var(--danger)}.exam-countdown.warning{color:var(--warning-dark)}

/* Notifications */
.notif-item{padding:12px 16px;border-bottom:1px solid var(--border);display:flex;gap:12px;align-items:flex-start;transition:background var(--t);cursor:pointer}
.notif-item:hover{background:var(--surface-2)}.notif-item.unread{background:#f7f5ff}
.notif-dot{width:7px;height:7px;border-radius:50%;background:var(--primary);flex-shrink:0;margin-top:6px}
.notif-title{font-size:13.5px;font-weight:600;color:var(--text);margin-bottom:2px}
.notif-message{font-size:12.5px;color:var(--text-3);line-height:1.4}
.notif-time{font-size:11px;color:var(--text-4);margin-top:3px}

/* Admin */
.admin-metric-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:22px;display:flex;flex-direction:column;transition:box-shadow var(--t)}
.admin-metric-card:hover{box-shadow:var(--shadow)}
.metric-value{font-family:var(--font-display);font-size:26px;font-weight:800;color:var(--text);margin:4px 0}
.metric-label{font-size:12px;font-weight:600;color:var(--text-3);text-transform:uppercase;letter-spacing:.5px}
.metric-profit{color:var(--success)}.metric-cost{color:var(--danger)}.metric-revenue{color:var(--primary)}

/* Toggle */
.toggle{position:relative;display:inline-block;width:42px;height:22px}
.toggle input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;inset:0;background:var(--border-strong);border-radius:22px;cursor:pointer;transition:.25s}
.toggle-slider::before{content:'';position:absolute;width:16px;height:16px;border-radius:50%;background:white;bottom:3px;left:3px;transition:.25s;box-shadow:0 1px 3px rgba(0,0,0,.25)}
.toggle input:checked + .toggle-slider{background:var(--success)}
.toggle input:checked + .toggle-slider::before{transform:translateX(20px)}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(12,10,8,.45);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);z-index:200;display:flex;align-items:center;justify-content:center;padding:20px}
.modal{background:var(--surface);border-radius:var(--radius-xl);padding:28px;max-width:480px;width:100%;box-shadow:var(--shadow-lg);animation:slideUp .25s ease;border:1px solid var(--border)}
.modal-title{font-family:var(--font-display);font-size:20px;font-weight:700;margin-bottom:16px}
.modal-footer{display:flex;gap:10px;justify-content:flex-end;margin-top:22px}

/* Pricing */
.pricing-card{border:1.5px solid var(--border);border-radius:var(--radius-xl);padding:28px;background:var(--surface);transition:all var(--t);position:relative}
.pricing-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md);transform:translateY(-3px)}
.pricing-card.featured{border-color:var(--primary);box-shadow:var(--shadow-primary)}
.pricing-card.featured::before{content:'Most Popular';position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--primary);color:white;font-size:10.5px;font-weight:700;padding:4px 14px;border-radius:99px;text-transform:uppercase;letter-spacing:.5px}
.pricing-price{font-family:var(--font-display);font-size:38px;font-weight:800;color:var(--text);line-height:1}
.pricing-price sup{font-size:18px;vertical-align:top;margin-top:6px}
.pricing-price span{font-size:15px;font-weight:400;color:var(--text-3)}
.pricing-features{list-style:none;padding:0;margin:18px 0}
.pricing-features li{display:flex;gap:8px;align-items:flex-start;font-size:13.5px;padding:5px 0}
.pricing-features li::before{content:'✓';color:var(--success);font-weight:800;flex-shrink:0}

/* Auth */
.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:#0e0c09;background-image:radial-gradient(ellipse 80% 80% at 20% 20%,rgba(108,92,231,.2) 0%,transparent 60%),radial-gradient(ellipse 60% 60% at 80% 80%,rgba(0,184,148,.1) 0%,transparent 60%)}
.auth-box{background:white;border-radius:var(--radius-xl);padding:40px;max-width:440px;width:100%;box-shadow:0 40px 100px rgba(0,0,0,.5)}
.auth-logo-icon{width:50px;height:50px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px;margin:0 auto 14px;box-shadow:0 8px 24px rgba(108,92,231,.4)}
.auth-title{font-family:var(--font-display);font-size:24px;font-weight:800;color:var(--text);text-align:center}
.auth-sub{font-size:14px;color:var(--text-3);text-align:center;margin-top:4px}

/* Planner */
.planner-day{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;border-left:3.5px solid var(--primary)}
.planner-day.today{border-left-color:var(--success);background:linear-gradient(to right,var(--success-light),var(--surface))}

/* Concepts */
.node-fact{border-color:#93c5fd}.node-hypothesis{border-color:var(--warning)}.node-decision{border-color:var(--success)}.node-question{border-color:var(--danger)}

/* Animations */
@keyframes slideUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes spin{to{transform:rotate(360deg)}}
.animate-fadeIn{animation:fadeIn .25s ease}.animate-slideUp{animation:slideUp .3s ease both}
.loading-spinner{width:18px;height:18px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;display:inline-block;vertical-align:middle}

/* Utilities */
.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}
.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}
.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}
.p-0{padding:0}.text-sm{font-size:13px}.text-xs{font-size:11px}.text-muted{color:var(--text-3)}.text-danger{color:var(--danger)}.text-success{color:var(--success)}.text-center{text-align:center}
.font-bold{font-weight:700}.w-full{width:100%}.rounded-full{border-radius:var(--radius-full)}
.hidden{display:none !important}.color-dot{width:10px;height:10px;border-radius:50%;display:inline-block;flex-shrink:0}
code{font-family:var(--font-mono);font-size:.88em;background:var(--surface-2);padding:2px 6px;border-radius:4px}
canvas{max-width:100%}

/* RTL */
[dir="rtl"] .sidebar{right:0;left:auto;border-right:none;border-left:1px solid var(--sidebar-border)}
[dir="rtl"] .main-content{margin-left:0;margin-right:var(--sidebar-width)}
[dir="rtl"] .nav-item.active::before{left:auto;right:0;border-radius:2px 0 0 2px}
[dir="rtl"] .session-card::before{left:auto;right:0;border-radius:2px 0 0 2px}
[dir="rtl"] .alert{border-left:none;border-right:3px solid}
[dir="rtl"] .chat-bubble.user{align-self:flex-start;border-bottom-left-radius:4px;border-bottom-right-radius:var(--radius-md)}
[dir="rtl"] .chat-bubble.assistant{align-self:flex-end;border-bottom-right-radius:4px;border-bottom-left-radius:var(--radius-md)}

/* Responsive */
.hamburger{display:none}
@media (max-width:900px){
  .sidebar{transform:translateX(-100%)}.sidebar.open{transform:translateX(0);box-shadow:var(--shadow-lg)}
  [dir="rtl"] .sidebar{transform:translateX(100%)}
  .main-content{margin-left:0}[dir="rtl"] .main-content{margin-right:0}
  .hamburger{display:flex}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .page-content{padding:16px}.topbar{padding:0 16px}
}
@media (max-width:600px){.auth-box{padding:28px 24px}.grid-auto{grid-template-columns:1fr}}