/* ═══════════════════════════════════════════════════
   Landing Page + Pricing + Auth — Styles
   ═══════════════════════════════════════════════════ */

/* ── Navbar ─────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 100;
  padding: 0 24px;
}

.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--color-text);
}

.navbar-brand span {
  font-size: 1.5rem;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.navbar-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.navbar-links a:hover {
  color: var(--color-text);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

@media (max-width: 768px) {
  .navbar-links { display: none; }
}

/* ── Hero Section ───────────────────────────────── */
.hero {
  padding: 140px 24px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--color-primary-100) 0%, transparent 70%);
  opacity: 0.5;
  z-index: -1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary-50);
  color: var(--color-primary);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid var(--color-primary-100);
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.1;
  max-width: 800px;
  margin: 0 auto 20px;
  letter-spacing: -0.02em;
}

.hero h1 .gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, #7C3AED 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-visual {
  margin-top: 64px;
  display: flex;
  justify-content: center;
  gap: 24px;
  perspective: 1000px;
}

.hero-card {
  width: 280px;
  height: 175px;
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow-xl);
  position: relative;
  transition: transform 0.5s ease;
}

.hero-card:nth-child(1) {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: white;
  transform: rotate(-5deg) translateY(10px);
}

.hero-card:nth-child(2) {
  background: linear-gradient(135deg, var(--color-primary) 0%, #7C3AED 100%);
  color: white;
  transform: rotate(3deg) translateY(-10px);
  z-index: 1;
}

.hero-card:nth-child(3) {
  background: linear-gradient(135deg, #065F46 0%, #10B981 100%);
  color: white;
  transform: rotate(8deg) translateY(20px);
}

.hero-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
}

.hero-card-brand {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0.9;
}

.hero-card-type {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.6;
}

.hero-card-points {
  font-size: 2rem;
  font-weight: 800;
}

.hero-card-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.6;
}

@media (max-width: 768px) {
  .hero { padding: 120px 24px 60px; }
  .hero h1 { font-size: 2.25rem; }
  .hero-subtitle { font-size: 1.0625rem; }
  .hero-visual { gap: 12px; }
  .hero-card { width: 200px; height: 125px; padding: 14px; }
  .hero-card:nth-child(3) { display: none; }
  .hero-card-points { font-size: 1.5rem; }
}

/* ── Features Section ───────────────────────────── */
.features {
  padding: 100px 24px;
  background: white;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
}

.features-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.feature-card {
  text-align: center;
  padding: 32px 24px;
  border-radius: var(--radius-xl);
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

.feature-card:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-100);
  transform: translateY(-4px);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-50);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 16px;
}

.feature-card h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
}

/* ── How it works ───────────────────────────────── */
.how-it-works {
  padding: 100px 24px;
  background: var(--color-bg);
}

.steps {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  gap: 40px;
  position: relative;
}

.steps::after {
  content: '';
  position: absolute;
  top: 36px;
  left: 36px;
  right: 36px;
  height: 2px;
  background: var(--color-primary-100);
  z-index: 0;
}

.step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 auto 20px;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.step h3 {
  font-size: 1.125rem;
  margin-bottom: 8px;
}

.step p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .steps { flex-direction: column; gap: 32px; }
  .steps::after { display: none; }
}

/* ── Pricing Section ────────────────────────────── */
.pricing {
  padding: 100px 24px;
  background: white;
}

.pricing-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  border-radius: var(--radius-xl);
  border: 2px solid var(--color-border);
  padding: 40px 32px;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
  background: white;
}

.pricing-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
  border-color: var(--color-primary);
  box-shadow: 0 8px 30px rgba(79, 70, 229, 0.15);
  transform: scale(1.05);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: white;
  padding: 6px 20px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pricing-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-text);
  margin-bottom: 4px;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.pricing-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 32px;
}

.pricing-features li {
  padding: 10px 0;
  font-size: 0.9375rem;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--color-border-light);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-card .btn {
  width: 100%;
}

@media (max-width: 1024px) {
  .pricing-grid { grid-template-columns: 1fr; max-width: 440px; }
  .pricing-card.popular { transform: none; }
}

/* ── FAQ Section ────────────────────────────────── */
.faq {
  padding: 80px 24px;
  background: var(--color-bg);
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-question::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 300;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

/* ── Footer ─────────────────────────────────────── */
.footer {
  padding: 48px 24px;
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
}

.footer-brand {
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
  margin-bottom: 8px;
}

.footer p {
  font-size: 0.875rem;
}

.footer-links {
  margin-top: 16px;
  display: flex;
  justify-content: center;
  gap: 24px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8125rem;
}

.footer-links a:hover {
  color: white;
}

/* ── Auth pages ─────────────────────────────────── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--color-bg);
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 40px;
  border: 1px solid var(--color-border-light);
}

.auth-header {
  text-align: center;
  margin-bottom: 32px;
}

.auth-header .logo {
  font-size: 2rem;
  margin-bottom: 8px;
}

.auth-header h1 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.auth-header p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.auth-form .btn {
  width: 100%;
  margin-top: 8px;
}

.auth-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.auth-footer a {
  font-weight: 600;
}

/* ── Auth divider (ou) ──────────────────────────── */
.auth-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 20px 0;
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* ── API Key display ────────────────────────────── */
.api-key-box {
  background: #1a1a2e;
  color: #10B981;
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.75rem;
  word-break: break-all;
  position: relative;
  margin: 16px 0;
}

.api-key-box .copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: white;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.75rem;
  font-family: var(--font-sans);
}

.api-key-box .copy-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.api-key-warning {
  background: var(--color-warning-light);
  color: #92400E;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

/* ── Demo modal ─────────────────────────────────── */
.demo-modal .modal {
  max-width: 480px;
}