/* ME-Xclusive — App styles (Dark theme default, mobile-first) */

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-thai);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.app-shell { max-width: 1280px; margin: 0 auto; padding: 0 16px; min-height: 100vh; }
.page { padding: 16px 0 96px; }
@media (min-width: 768px) { .page { padding: 24px 0 32px; } }

/* Top nav (desktop) */
.top-nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 0; border-bottom: 1px solid var(--border); margin-bottom: 16px;
}
.brand { font-size: 18px; font-weight: 800; letter-spacing: 0.2px; }
.brand .x { color: var(--brand); }
.top-nav-links { display: none; }
.top-nav-actions { display: flex; gap: 8px; align-items: center; }
@media (min-width: 768px) {
  .top-nav-links { display: flex; gap: 24px; }
  .top-nav-links a { color: var(--muted-2); font-weight: 500; }
  .top-nav-links a.active { color: var(--fg); }
}

/* Bottom nav (mobile) */
.bottom-nav {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: var(--surface); border-top: 1px solid var(--border);
  display: flex; justify-content: space-around; padding: 8px 0 14px;
  z-index: 40;
}
.bottom-nav a {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  color: var(--muted); font-size: 11px; padding: 6px 12px; min-width: 64px;
}
.bottom-nav a.active { color: var(--gold); }
.bottom-nav a i { font-size: 18px; }
@media (min-width: 768px) { .bottom-nav { display: none; } }

/* Eyebrow / heading */
.eyebrow { font-size: 11px; letter-spacing: 1.6px; color: var(--muted); text-transform: uppercase; }
.heading { font-size: clamp(24px, 5vw, 36px); font-weight: 800; line-height: 1.1; margin: 4px 0; }
.sub { color: var(--muted-2); font-size: 14px; }

/* Card */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 16px;
  margin-bottom: 12px;
}
.card-lg { padding: 24px; border-radius: var(--r-xl); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 18px; border-radius: var(--r-md); border: 0;
  font-family: inherit; font-weight: 600; font-size: 14px; cursor: pointer;
  transition: all .15s ease;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-gold    { background: var(--gold); color: #0A0C10; }
.btn-outline { background: transparent; color: var(--fg); border: 1px solid var(--border); }
.btn-outline:hover { background: var(--surface-2); }
.btn-ghost   { background: transparent; color: var(--muted-2); }
.btn-full    { width: 100%; }
.btn-sm      { padding: 8px 12px; font-size: 13px; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; color: var(--muted-2); margin-bottom: 6px; }
.form-input {
  width: 100%; background: var(--surface-2); color: var(--fg);
  border: 1px solid var(--border); border-radius: var(--r-md);
  padding: 12px 14px; font-family: inherit; font-size: 15px;
}
.form-input:focus { outline: none; border-color: var(--gold); }
.form-help { font-size: 12px; color: var(--muted); margin-top: 6px; }
.form-error { color: var(--danger); font-size: 13px; margin-top: 6px; }

/* Tier-themed gem */
.tier-gem {
  width: 88px; height: 88px; border-radius: 24px; display: grid; place-items: center;
  background: var(--tier-soft, var(--tier-A-soft));
  color: var(--tier-color, var(--tier-A));
  font-weight: 800; font-size: 32px; flex-shrink: 0;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05);
}
.tier-gem.lg { width: 120px; height: 120px; font-size: 44px; border-radius: 28px; }

.tier-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px;
  background: var(--tier-soft, var(--tier-A-soft));
  color: var(--tier-color, var(--tier-A));
  font-size: 12px; font-weight: 700; letter-spacing: 0.4px;
  text-transform: uppercase;
}
.tier-pill .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* Hero (tier card + points card) */
.hero {
  display: grid; grid-template-columns: 1fr; gap: 12px;
}
@media (min-width: 768px) { .hero { grid-template-columns: 1.25fr 1fr; gap: 16px; } }

.tier-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 24px;
  display: flex; gap: 20px; align-items: center;
  position: relative; overflow: hidden;
}
.tier-card::before {
  content: ''; position: absolute; top: -40%; right: -10%; width: 60%; height: 180%;
  background: radial-gradient(closest-side, var(--tier-soft, transparent), transparent);
  pointer-events: none;
}
.tier-card .info { flex: 1; min-width: 0; }
.tier-card h2 { font-size: 36px; font-weight: 800; margin: 6px 0; }
.tier-tagline { color: var(--muted-2); font-size: 14px; }

/* Points card */
.points-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 24px;
  display: flex; flex-direction: column; gap: 12px;
}
.points-num { font-size: 44px; font-weight: 800; line-height: 1; }
.points-row { display: flex; gap: 24px; padding-top: 12px; border-top: 1px solid var(--border); }
.points-row .col { flex: 1; }
.points-row .col-label { font-size: 11px; letter-spacing: 1.4px; color: var(--muted); text-transform: uppercase; }
.points-row .col-val { font-size: 17px; font-weight: 700; margin-top: 3px; }

/* Stats grid */
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 12px; }
.stat-row .card { padding: 12px; margin: 0; }
.stat-row .label { font-size: 10px; letter-spacing: 1.2px; color: var(--muted); text-transform: uppercase; }
.stat-row .val { font-size: 18px; font-weight: 700; margin-top: 2px; }

/* Benefits grid */
.benefits {
  display: grid; gap: 8px;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 640px) { .benefits { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .benefits { grid-template-columns: repeat(5, 1fr); } }
.benefit-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 14px;
  display: flex; flex-direction: column; gap: 6px;
  position: relative;
}
.benefit-card.locked { opacity: 0.55; }
.benefit-card.locked::after {
  content: '\f023'; font-family: 'Font Awesome 6 Free'; font-weight: 900;
  position: absolute; top: 10px; right: 12px; color: var(--muted);
}
.benefit-icon {
  width: 36px; height: 36px; border-radius: 8px; display: grid; place-items: center;
  background: rgba(212,175,55,0.12); color: var(--gold); font-size: 16px;
}
.benefit-cat { font-size: 9px; letter-spacing: 1.4px; color: var(--muted); text-transform: uppercase; }
.benefit-title-en { font-weight: 700; font-size: 13px; }
.benefit-title-th { font-size: 11px; color: var(--muted-2); }
.benefit-desc { font-size: 11px; color: var(--muted-2); margin-top: auto; }

/* Flash messages */
.flash {
  border-radius: var(--r-md); padding: 12px 16px; margin-bottom: 16px;
  border-left: 3px solid; font-size: 14px;
  background: var(--surface);
}
.flash-success { border-color: var(--success); }
.flash-error   { border-color: var(--danger); }
.flash-warning { border-color: var(--warning); }

/* Center column (login etc) */
.center-page {
  min-height: 100vh; display: grid; place-items: center;
  padding: 24px; background: var(--bg);
}
.center-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: 32px; max-width: 420px; width: 100%;
  box-shadow: var(--shadow-lg);
}

/* Member card (QR) */
.member-card {
  background: linear-gradient(135deg, var(--tier-color, var(--gold)), var(--tier-dark, #8B5A1E));
  color: #0A0C10;
  border-radius: var(--r-xl);
  padding: 24px;
  position: relative; overflow: hidden;
}
.member-card .label { font-size: 11px; letter-spacing: 2px; opacity: 0.7; text-transform: uppercase; }
.member-card .code { font-size: 22px; font-weight: 800; margin-top: 4px; font-family: var(--font-latin); letter-spacing: 1px; }
.member-card .qr-box { background: #fff; padding: 12px; border-radius: var(--r-md); margin-top: 16px; display: inline-block; }

/* Utility */
.text-muted { color: var(--muted); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-1 { flex: 1; }
.gap-1 { gap: 8px; } .gap-2 { gap: 16px; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }