/* AI91 Platform — design system */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0e1a; --bg2:#111827; --card:#1a2236; --card2:#222b42;
  --border:#2a3550; --text:#e5e7eb; --muted:#94a3b8; --dim:#64748b;
  --primary:#ee4d2d; --primary2:#fe2c55;
  --green:#22c55e; --red:#ef4444; --amber:#f59e0b; --blue:#3b82f6;
}
body{font-family:-apple-system,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6}
a{color:#fb923c;text-decoration:none}
a:hover{text-decoration:underline}

/* Layout */
.topbar{position:sticky;top:0;z-index:10;background:var(--bg2);border-bottom:1px solid var(--border);padding:14px 24px;display:flex;align-items:center;gap:18px}
.topbar .brand{font-size:1.1rem;font-weight:800;background:linear-gradient(135deg,#fb923c,#fe2c55);-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-decoration:none}
.topbar nav{margin-left:auto;display:flex;align-items:center;gap:14px;font-size:.9rem}
.topbar nav a{color:var(--muted);font-weight:600}
.topbar nav a:hover{color:var(--text);text-decoration:none}
.topbar nav a.active{color:var(--text)}
main{max-width:980px;margin:0 auto;padding:32px 20px}
footer{padding:30px 20px;text-align:center;color:var(--muted);font-size:.78rem;border-top:1px solid var(--border);margin-top:60px}

/* Hero */
.hero{text-align:center;padding:40px 0 30px;background:radial-gradient(ellipse at top,rgba(238,77,45,.15),transparent 60%);margin:-32px -20px 30px;padding:60px 20px 40px}
.hero-tag{display:inline-block;padding:6px 14px;background:rgba(238,77,45,.15);border:1px solid rgba(238,77,45,.3);border-radius:20px;font-size:.78rem;color:#fb923c;font-weight:600;margin-bottom:18px}
.hero h1{font-size:2.4rem;font-weight:800;line-height:1.15;margin-bottom:14px;background:linear-gradient(135deg,#fb923c,#fe2c55);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero h1 small{display:block;font-size:1.1rem;color:var(--text);-webkit-text-fill-color:var(--text);margin-top:8px;font-weight:600}
.hero p.lead{font-size:1rem;color:var(--muted);max-width:640px;margin:0 auto 22px}
.hero .cta-row{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}

/* Buttons */
.btn-primary,.btn-ghost,.btn-danger{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:8px;font-size:.88rem;font-weight:700;cursor:pointer;border:none;font-family:inherit;text-decoration:none}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 4px 14px rgba(238,77,45,.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(238,77,45,.4);text-decoration:none}
.btn-ghost{background:var(--card);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--card2);text-decoration:none}
.btn-danger{background:#ef4444;color:#fff}
.btn-danger:hover{background:#dc2626}
.btn-danger.small{padding:5px 10px;font-size:.78rem}

/* Sections */
.section{margin-bottom:40px}
.section-title{font-size:1.4rem;font-weight:800;margin-bottom:16px}

/* Weeks grid */
.weeks-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
.week-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:22px}
.week-badge{display:inline-block;padding:3px 10px;border-radius:14px;background:rgba(238,77,45,.15);color:#fb923c;font-size:.72rem;font-weight:700;margin-bottom:10px}
.week-card h3{font-size:1.15rem;margin-bottom:6px}
.week-card p{color:var(--muted);font-size:.88rem}

/* Benefits */
.benefits{list-style:none;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:22px}
.benefits li{padding:6px 0;font-size:.95rem}

/* Trust */
.trust{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:22px;display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:center}
.trust-icon{width:64px;height:64px;background:linear-gradient(135deg,var(--primary),var(--primary2));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.7rem;flex-shrink:0}

/* Auth card */
.auth-card{max-width:440px;margin:40px auto;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:30px}
.auth-card h2{margin-bottom:8px}

/* Form */
.form{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.form label{font-size:.78rem;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-top:8px}
.form input[type=text],.form input[type=email],.form input[type=number],.form textarea{padding:10px 14px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:.92rem;font-family:inherit;width:100%}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--primary)}
.form textarea{min-height:300px;line-height:1.5}
.form .checkbox{display:flex;align-items:center;gap:8px;font-size:.88rem;color:var(--text);text-transform:none;letter-spacing:0}

/* Alerts */
.alert{padding:12px 16px;border-radius:8px;font-size:.88rem;margin-top:14px}
.alert-success{background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.3);color:#4ade80}
.alert-error{background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.3);color:#f87171}

/* Dashboard */
.progress-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px;margin-bottom:24px}
.progress-info{font-size:.95rem;margin-bottom:8px}
.progress-bar{height:10px;background:var(--bg2);border-radius:5px;overflow:hidden}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--primary2));border-radius:5px;transition:width .3s}
.week-block{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:22px;margin-bottom:14px}
.week-title{font-size:1.1rem;margin-bottom:4px}
.days-list{display:flex;flex-direction:column;gap:5px;margin-top:14px}
.day-link{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--bg2);border-radius:8px;border:1px solid var(--border);text-decoration:none;color:var(--text);transition:all .15s}
.day-link:hover{background:var(--card2);border-color:var(--primary);text-decoration:none;transform:translateX(2px)}
.day-link.done{opacity:.7}
.day-icon{font-size:1.1rem}
.day-num{font-weight:700;color:var(--muted);font-size:.85rem;min-width:60px}
.day-title{flex:1}

/* Learn page */
.learn-page{max-width:760px;margin:0 auto}
.learn-meta{display:flex;justify-content:space-between;font-size:.85rem;margin-bottom:14px}
.learn-page h1{font-size:1.8rem;margin-bottom:24px}
.content{font-size:1rem;line-height:1.75}
.content h1,.content h2,.content h3{margin:28px 0 14px;font-weight:700}
.content h2{font-size:1.4rem;border-bottom:1px solid var(--border);padding-bottom:8px}
.content h3{font-size:1.15rem}
.content p{margin-bottom:14px}
.content ul,.content ol{margin:0 0 14px 24px}
.content li{margin-bottom:6px}
.content code{background:var(--bg2);padding:2px 6px;border-radius:4px;font-size:.85em;font-family:monospace;color:#fbbf24}
.content pre{background:var(--bg2);border:1px solid var(--border);padding:14px;border-radius:8px;overflow-x:auto;margin-bottom:14px}
.content pre code{background:none;padding:0;color:var(--text)}
.content blockquote{border-left:3px solid var(--primary);padding:10px 16px;background:rgba(238,77,45,.08);margin-bottom:14px;border-radius:4px}
.content table{width:100%;border-collapse:collapse;margin-bottom:14px}
.content table th,.content table td{padding:8px 12px;border:1px solid var(--border);text-align:left}
.content table th{background:var(--card2);font-weight:700}
.learn-actions{margin:30px 0}
.nav-prev-next{display:flex;justify-content:space-between;margin-top:30px;padding-top:20px;border-top:1px solid var(--border)}

/* KPI grid */
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin:20px 0}
.kpi{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px}
.kpi-lbl{font-size:.72rem;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px}
.kpi-val{font-size:1.6rem;font-weight:800}

/* Admin grid */
.admin-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:20px}
.admin-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;text-decoration:none;color:var(--text);transition:all .15s}
.admin-card:hover{border-color:var(--primary);transform:translateY(-2px);text-decoration:none;box-shadow:0 6px 20px rgba(238,77,45,.15)}
.admin-card h3{font-size:1.05rem;margin-bottom:6px}
.admin-card p{color:var(--muted);font-size:.85rem}

/* Tables */
.tbl{width:100%;border-collapse:collapse;margin-top:14px;background:var(--card);border-radius:10px;overflow:hidden}
.tbl thead th{background:var(--card2);color:var(--muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.5px;padding:10px 14px;text-align:left;border-bottom:1px solid var(--border)}
.tbl tbody td{padding:10px 14px;border-bottom:1px solid var(--border);font-size:.88rem}
.tbl tbody tr:last-child td{border-bottom:none}
.tbl tbody tr:hover{background:var(--card2)}

/* Utility */
.muted{color:var(--muted)}
.small{font-size:.78rem}

@media(max-width:640px){
  .hero h1{font-size:1.7rem}
  .topbar{padding:12px 16px;flex-wrap:wrap}
  main{padding:20px 16px}
}