:root {
  --primary: #1a3c6e;
  --primary-light: #2a5298;
  --accent: #c9a84c;
  --bg: #f8f7f4;
  --card: #ffffff;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --success: #16a34a;
  --danger: #dc2626;
  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Source Serif 4', 'Georgia', serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.sans { font-family: 'Inter', -apple-system, sans-serif; }

/* NAV */
nav {
  background: var(--primary);
  padding: 0 32px;
  display: flex;
  align-items: center;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 100;
  gap: 32px;
}
.nav-logo { font-family: 'Playfair Display', serif; font-size: 20px; color: #fff; font-weight: 700; text-decoration: none; }
.nav-links { display: flex; gap: 20px; flex: 1; }
.nav-links a { color: rgba(255,255,255,.8); text-decoration: none; font-family: Inter, sans-serif; font-size: 14px; transition: color .15s; }
.nav-links a:hover { color: #fff; }
.nav-actions { display: flex; gap: 10px; }

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-family: Inter, sans-serif;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all .15s;
}
.btn-primary { background: var(--accent); color: var(--primary); }
.btn-primary:hover { background: #b8963e; }
.btn-outline { background: transparent; border: 1.5px solid rgba(255,255,255,.5); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,.1); border-color: #fff; }
.btn-dark { background: var(--primary); color: #fff; }
.btn-dark:hover { background: var(--primary-light); }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-block { width: 100%; justify-content: center; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* HERO */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  padding: 80px 32px;
  text-align: center;
  color: #fff;
}
.hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.2;
  margin-bottom: 20px;
}
.hero p { font-size: 18px; opacity: .85; max-width: 600px; margin: 0 auto 32px; font-family: Inter, sans-serif; }
.hero-disclaimer {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 8px;
  padding: 12px 20px;
  font-size: 13px;
  opacity: .8;
  max-width: 700px;
  margin: 24px auto 0;
  font-family: Inter, sans-serif;
}

/* CONTAINER */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: 64px 0; }
.section-title {
  font-family: 'Playfair Display', serif;
  font-size: 32px;
  text-align: center;
  margin-bottom: 8px;
}
.section-sub { text-align: center; color: var(--text-muted); font-family: Inter, sans-serif; font-size: 15px; margin-bottom: 40px; }

/* CARDS GRID */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 1px 4px rgba(0,0,0,.04);
}
.card-icon { font-size: 32px; margin-bottom: 16px; }
.card h3 { font-size: 18px; margin-bottom: 8px; font-family: 'Playfair Display', serif; }
.card p { font-size: 14px; color: var(--text-muted); font-family: Inter, sans-serif; line-height: 1.6; }

/* PRICING */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.price-card {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  position: relative;
}
.price-card.popular {
  border-color: var(--accent);
  transform: scale(1.03);
  box-shadow: 0 4px 24px rgba(201,168,76,.2);
}
.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 20px;
  font-family: Inter, sans-serif;
  white-space: nowrap;
}
.price-name { font-size: 15px; font-weight: 600; margin-bottom: 8px; font-family: Inter, sans-serif; }
.price-credits { font-size: 36px; font-weight: 700; color: var(--primary); font-family: 'Playfair Display', serif; }
.price-credits span { font-size: 14px; font-weight: 400; color: var(--text-muted); }
.price-amount { font-size: 22px; font-weight: 700; margin: 12px 0; font-family: Inter, sans-serif; }

/* AUTH PAGES */
.auth-page {
  min-height: calc(100vh - 60px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}
.auth-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 4px 24px rgba(0,0,0,.07);
}
.auth-logo { text-align: center; margin-bottom: 28px; }
.auth-logo h1 { font-family: 'Playfair Display', serif; font-size: 26px; color: var(--primary); }
.auth-logo p { font-size: 14px; color: var(--text-muted); font-family: Inter, sans-serif; }

/* FORMS */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; font-family: Inter, sans-serif; color: var(--text-muted); }
.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: Inter, sans-serif;
  color: var(--text);
  background: #fff;
  transition: border-color .15s;
}
.form-control:focus { outline: none; border-color: var(--primary-light); }
.form-error { color: var(--danger); font-size: 12px; margin-top: 4px; font-family: Inter, sans-serif; }

/* DISCLAIMER */
.disclaimer-box {
  background: #fef3c7;
  border: 1px solid #f59e0b;
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 16px;
  font-size: 13px;
  font-family: Inter, sans-serif;
  color: #78350f;
  line-height: 1.5;
}

/* DASHBOARD */
.dash-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin-bottom: 24px; }
.dash-stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.dash-stat-value { font-size: 32px; font-weight: 700; color: var(--primary); font-family: 'Playfair Display', serif; }
.dash-stat-label { font-size: 13px; color: var(--text-muted); font-family: Inter, sans-serif; margin-top: 4px; }

/* ALERT */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
  font-family: Inter, sans-serif;
}
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: var(--success); }
.alert-danger { background: #fef2f2; border: 1px solid #fecaca; color: var(--danger); }

/* SPINNER */
.spinner { display: inline-block; width: 20px; height: 20px; border: 2px solid #ddd; border-top-color: var(--primary); border-radius: 50%; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* FOOTER */
footer {
  background: var(--primary);
  color: rgba(255,255,255,.7);
  padding: 40px 32px;
  font-family: Inter, sans-serif;
  font-size: 13px;
}
.footer-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 24px; max-width: 1100px; margin: 0 auto; }
footer a { color: rgba(255,255,255,.7); text-decoration: none; display: block; margin-bottom: 8px; }
footer a:hover { color: #fff; }
.footer-bottom { text-align: center; margin-top: 32px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); }

/* ── MOBILE NAV HAMBURGER ── */
.nav-burger {
  display: none;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}
.nav-mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--primary);
  padding: 12px 20px 20px;
  border-top: 1px solid rgba(255,255,255,.1);
  position: sticky;
  top: 60px;
  z-index: 99;
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu a {
  color: rgba(255,255,255,.85);
  text-decoration: none;
  font-family: Inter, sans-serif;
  font-size: 15px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.nav-mobile-menu a:last-child { border-bottom: none; }

@media (max-width: 768px) {
  .dash-grid { grid-template-columns: 1fr 1fr; }
  .hero { padding: 48px 20px; }
  nav { padding: 0 16px; }
  .nav-links { display: none; }
  .nav-actions { display: none; }
  .nav-burger { display: block; }
  .pricing-grid { grid-template-columns: 1fr 1fr; }
  .price-card.popular { transform: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 28px; }
  .hero p { font-size: 15px; }
  .cards-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 40px 0; }
  .section-title { font-size: 26px; }
  .btn-lg { padding: 12px 22px; font-size: 15px; }
  .auth-box { padding: 28px 20px; }
}