/* =========================================================
   Apna IQ — Design System
   ========================================================= */
:root {
  --primary: #5b4dff;
  --primary-dark: #453adb;
  --primary-light: #eeecff;
  --accent: #ff7a45;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --bg: #f7f7fb;
  --card-bg: #ffffff;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(20,20,50,0.06), 0 1px 2px rgba(20,20,50,0.04);
  --shadow-lg: 0 10px 30px rgba(20,20,50,0.10);
  font-size: 16px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--text-muted); }
.center { text-align: center; }

/* ---------- Header ---------- */
.site-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.logo { font-size: 1.4rem; font-weight: 800; color: var(--text); white-space: nowrap; }
.logo span { color: var(--primary); }
.main-nav { display: flex; gap: 22px; flex: 1; align-items: center; }
.main-nav > a, .nav-toggle { font-weight: 600; font-size: .93rem; color: var(--text); cursor: pointer; }
.main-nav > a:hover, .nav-toggle:hover { color: var(--primary); }
.nav-group { position: relative; }
.nav-dropdown {
  display: none; position: absolute; top: 130%; left: 0; background: var(--card-bg);
  border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-lg);
  min-width: 200px; padding: 8px; flex-direction: column; z-index: 50;
}
.nav-group:hover .nav-dropdown { display: flex; }
.nav-dropdown a { padding: 8px 12px; border-radius: 8px; font-size: .9rem; font-weight: 500; color: var(--text); }
.nav-dropdown a:hover { background: var(--primary-light); color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.mobile-toggle { display: none; background: none; border: none; font-size: 1.4rem; cursor: pointer; }
.wallet-pill {
  background: var(--primary-light); color: var(--primary-dark); font-weight: 700;
  padding: 6px 12px; border-radius: 999px; font-size: .85rem;
}
.avatar-link {
  width: 34px; height: 34px; border-radius: 50%; background: var(--primary);
  color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; padding: 9px 18px; border-radius: 8px; font-weight: 600;
  font-size: .9rem; cursor: pointer; border: 1px solid transparent; text-align: center;
  transition: all .15s ease;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-ghost { background: transparent; color: var(--text); }
.btn-ghost:hover { color: var(--primary); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-block { display: block; width: 100%; }
.btn-sm { padding: 6px 12px; font-size: .8rem; }
button.btn { font-family: inherit; }

/* ---------- Page layout ---------- */
.page-content { padding: 32px 20px 60px; min-height: 60vh; }
.page-header { margin-bottom: 24px; }
.page-header p { color: var(--text-muted); }

/* ---------- Alerts ---------- */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: .9rem; }
.alert-error { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: var(--success); border: 1px solid #bbf7d0; }
.alert-info { background: var(--primary-light); color: var(--primary-dark); border: 1px solid #d9d5ff; }

/* ---------- Cards & grids ---------- */
.card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow);
}
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.item-card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); transition: transform .15s ease, box-shadow .15s ease;
  display: flex; flex-direction: column;
}
.item-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.item-cover { height: 140px; background: linear-gradient(135deg, var(--primary), #8b7bff); display: flex; align-items: center; justify-content: center; font-size: 2.4rem; color: #fff; }
.item-cover img { width: 100%; height: 100%; object-fit: cover; }
.item-body { padding: 16px; flex: 1; display: flex; flex-direction: column; gap: 6px; }
.item-type { font-size: .72rem; font-weight: 700; color: var(--primary); text-transform: uppercase; letter-spacing: .04em; }
.item-title { font-weight: 700; font-size: 1rem; margin: 0; }
.item-meta { font-size: .8rem; color: var(--text-muted); }
.item-footer { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; border-top: 1px solid var(--border); }
.price-tag { font-weight: 800; color: var(--text); font-size: 1.05rem; }
.price-free { color: var(--success); }

/* ---------- Badges / tags ---------- */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .72rem; font-weight: 700; }
.badge-open { background: #f0fdf4; color: var(--success); }
.badge-closed { background: #fef2f2; color: var(--danger); }
.badge-pending { background: #fffbeb; color: var(--warning); }
.badge-xp { background: var(--primary-light); color: var(--primary-dark); }

/* ---------- Forms ---------- */
.form-group { margin-bottom: 18px; }
label { display: block; font-weight: 600; font-size: .88rem; margin-bottom: 6px; }
input[type=text], input[type=email], input[type=password], input[type=number],
input[type=date], input[type=url], input[type=file], select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: .92rem; font-family: inherit; background: #fff; color: var(--text);
}
textarea { min-height: 120px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.form-hint { font-size: .78rem; color: var(--text-muted); margin-top: 4px; }
.form-card { max-width: 560px; margin: 0 auto; }
.auth-wrap { max-width: 420px; margin: 40px auto; }

/* ---------- Filters ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 24px; align-items: center; background: var(--card-bg); padding: 14px; border-radius: var(--radius); border: 1px solid var(--border); }
.filter-bar select, .filter-bar input { width: auto; min-width: 160px; }

/* ---------- Hero ---------- */
.hero { padding: 70px 20px; text-align: center; background: radial-gradient(circle at top, var(--primary-light), var(--bg) 65%); }
.hero h1 { font-size: 2.6rem; max-width: 800px; margin: 0 auto .3em; }
.hero p { font-size: 1.15rem; color: var(--text-muted); max-width: 620px; margin: 0 auto 1.6em; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.feature-grid { padding: 60px 20px; }
.feature-card { text-align: center; padding: 26px 18px; }
.feature-icon { font-size: 2.2rem; margin-bottom: 10px; }

/* ---------- Stats ---------- */
.stat-row { display: flex; gap: 16px; flex-wrap: wrap; }
.stat-box { flex: 1; min-width: 140px; background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; text-align: center; }
.stat-box .num { font-size: 1.7rem; font-weight: 800; color: var(--primary); }
.stat-box .label { font-size: .8rem; color: var(--text-muted); }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; background: var(--card-bg); border-radius: var(--radius); overflow: hidden; }
th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: .88rem; }
th { background: #fafafc; font-weight: 700; }
tr:last-child td { border-bottom: none; }

/* ---------- Profile ---------- */
.profile-header { display: flex; gap: 22px; align-items: center; background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; margin-bottom: 24px; }
.profile-avatar { width: 84px; height: 84px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 2rem; font-weight: 800; flex-shrink: 0; }
.tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab { padding: 10px 16px; font-weight: 600; font-size: .88rem; cursor: pointer; border-bottom: 2px solid transparent; color: var(--text-muted); }
.tab.active, .tab:hover { color: var(--primary); border-color: var(--primary); }

/* ---------- Footer ---------- */
.site-footer { background: #14142b; color: #cfcfe6; margin-top: 60px; padding-top: 40px; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 30px; padding-bottom: 30px; }
.footer-inner .logo { color: #fff; }
.footer-inner p { max-width: 280px; }
.footer-links { display: flex; gap: 50px; flex-wrap: wrap; }
.footer-links h4 { color: #fff; font-size: .85rem; margin-bottom: 10px; }
.footer-links a { display: block; color: #a9a9c9; font-size: .85rem; margin-bottom: 8px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #29294a; padding: 18px 20px; font-size: .8rem; text-align: center; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .main-nav { display: none; flex-direction: column; align-items: flex-start; position: absolute; top: 68px; left: 0; right: 0; background: #fff; padding: 16px 20px; border-bottom: 1px solid var(--border); }
  .main-nav.open { display: flex; }
  .nav-dropdown { position: static; display: flex; box-shadow: none; border: none; padding-left: 10px; }
  .mobile-toggle { display: block; }
  .header-actions .btn-ghost { display: none; }
  .hero h1 { font-size: 1.9rem; }
}