@import"https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400&display=swap";:root{--primary: #1A237E;--primary-dark: #0D1557;--primary-mid: #3949AB;--primary-light: #E8EAF6;--secondary: #FFB800;--secondary-dark: #B37A00;--secondary-light:#FFF8E1;--success: #047857;--success-light: #D1FAE5;--danger: #B91C1C;--danger-light: #FEE2E2;--reading-color: #1565C0;--reading-light: #E3F2FD;--listening-color:#6A1B9A;--listening-light:#F3E5F5;--bg: #F9FAFB;--surface: #FFFFFF;--text: #1A1A2E;--text-muted: #6B7280;--border: #E5E7EB;--border-brand: rgba(26, 35, 126, .12);--shadow-sm: 0 2px 8px rgba(26, 35, 126, .06);--shadow: 0 4px 20px rgba(26, 35, 126, .08);--shadow-lg: 0 10px 40px rgba(26, 35, 126, .12);--shadow-xl: 0 20px 60px rgba(26, 35, 126, .16);--radius-sm: 8px;--radius: 12px;--radius-lg: 16px;--radius-xl: 20px;--radius-full:999px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Be Vietnam Pro,Manrope,sans-serif;font-size:15px;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}a,button,input,select,textarea{font:inherit}button{cursor:pointer}p{margin:0}h1,h2,h3,h4,h5{margin:0;line-height:1.25}.app-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.app-shell__sidebar{position:sticky;top:0;height:100vh;overflow-y:auto;overflow-x:hidden;scrollbar-width:none}.app-shell__sidebar::-webkit-scrollbar{display:none}.app-shell__main{min-width:0;display:flex;flex-direction:column}.sidebar{display:flex;flex-direction:column;height:100%;min-height:100vh;background:var(--primary-dark);padding:20px 12px}.sidebar__brand{display:flex;align-items:center;gap:10px;padding:8px 10px 20px;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:8px}.sidebar__logo{width:36px;height:36px;border-radius:10px;background:var(--secondary);display:grid;place-items:center;font-size:13px;font-weight:800;color:var(--primary-dark);letter-spacing:-.5px;flex-shrink:0}.sidebar__brand-name{font-size:16px;font-weight:800;color:#fff;text-decoration:none;letter-spacing:-.3px}.sidebar__brand-name span{color:var(--secondary)}.sidebar__brand-sub{font-size:10px;color:#fff6;font-weight:600;text-transform:uppercase;letter-spacing:.6px;margin-top:1px}.sidebar__nav{flex:1;display:flex;flex-direction:column;gap:2px;padding-top:8px}.sidebar__nav-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:#ffffff59;padding:14px 12px 6px;display:block}.sidebar__nav a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--radius-sm);color:#ffffffa6;text-decoration:none;font-size:14px;font-weight:600;transition:background .15s,color .15s}.sidebar__nav a:hover{background:rgba(255,255,255,.06);color:#ffffffe6}.sidebar__nav a.active{background:rgba(255,184,0,.15);color:var(--secondary);border-left:3px solid var(--secondary);padding-left:9px}.sidebar__nav-icon{width:18px;height:18px;display:grid;place-items:center;opacity:.7;font-size:14px}.sidebar__auth{margin-top:auto;padding:12px 10px 4px;border-top:1px solid rgba(255,255,255,.08)}.sidebar__profile{display:flex;align-items:center;gap:10px;padding:8px;border-radius:var(--radius-sm);background:rgba(255,255,255,.05);margin-bottom:8px}.sidebar__profile img{width:32px;height:32px;border-radius:50%;object-fit:cover;border:2px solid rgba(255,255,255,.15)}.sidebar__profile strong{display:block;font-size:13px;font-weight:700;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:140px}.sidebar__profile p{font-size:11px;color:#fff6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:140px}.sidebar__btn{width:100%;padding:8px 14px;border-radius:var(--radius-sm);font-size:13px;font-weight:700;border:none;cursor:pointer;transition:background .15s}.sidebar__btn--logout{background:rgba(255,255,255,.08);color:#ffffffb3}.sidebar__btn--logout:hover{background:rgba(255,255,255,.14);color:#fff}.sidebar__btn--login{background:var(--secondary);color:var(--primary-dark)}.sidebar__btn--login:hover{background:#ffc933}.page-topbar{position:sticky;top:0;z-index:50;height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:0 1px 0 var(--border)}.page-topbar h2{font-size:15px;font-weight:700;color:var(--text);letter-spacing:-.2px}.container{width:min(1100px,100% - 2rem);margin:0 auto}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:40px;padding:8px 18px;border-radius:var(--radius-full);border:1px solid transparent;text-decoration:none;font-size:14px;font-weight:700;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s;white-space:nowrap}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn--primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px #1a237e40}.btn--primary:hover{background:var(--primary-mid);box-shadow:0 6px 20px #1a237e52}.btn--secondary{background:var(--secondary);color:var(--primary-dark);box-shadow:0 4px 14px #ffb8004d}.btn--secondary:hover{background:#ffc933}.btn--ghost{background:transparent;border-color:var(--border);color:var(--text)}.btn--ghost:hover{background:var(--bg)}.btn--outline{background:transparent;border-color:var(--primary);color:var(--primary)}.btn--outline:hover{background:var(--primary-light)}.btn--sm{min-height:32px;padding:5px 12px;font-size:12px}.skill-pill{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:var(--radius-full);font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.5px}.skill-pill--reading{background:var(--reading-light);color:var(--reading-color)}.skill-pill--listening{background:var(--listening-light);color:var(--listening-color)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow-sm)}.input{width:100%;min-height:44px;padding:10px 14px;border-radius:var(--radius);border:1.5px solid var(--border);background:var(--surface);font-size:14px;color:var(--text);outline:none;transition:border-color .15s,box-shadow .15s}.input::placeholder{color:var(--text-muted)}.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #1a237e14}@media (max-width: 900px){.app-shell{grid-template-columns:1fr}.app-shell__sidebar{position:relative;height:auto}.sidebar{min-height:auto;flex-direction:row;flex-wrap:wrap;padding:12px;gap:8px}.sidebar__brand{padding-bottom:0;border-bottom:none;margin-bottom:0}.sidebar__nav{flex-direction:row;flex-wrap:wrap;padding-top:0;gap:4px}.sidebar__nav-label{display:none}.sidebar__auth{border-top:none;padding-top:0;margin-top:0}}