/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #818cf8;
  --secondary: #06b6d4;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --dark-3: #334155;
  --gray: #64748b;
  --gray-light: #94a3b8;
  --border: #e2e8f0;
  --bg: #f8fafc;
  --white: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -1px rgba(0,0,0,.06);
  --shadow-md: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
  --shadow-lg: 0 20px 25px -5px rgba(0,0,0,.1), 0 10px 10px -5px rgba(0,0,0,.04);
  --transition: all 0.25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 15px;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ===== TYPOGRAPHY ===== */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; line-height: 1.25; }
h3 { font-size: 1.25rem; font-weight: 600; }
h4 { font-size: 1.05rem; font-weight: 600; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.925rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(79,70,229,.35);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--border); }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: var(--radius); }
.btn-sm { padding: 6px 14px; font-size: 0.825rem; }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-success { background: var(--success); color: #fff; border-color: var(--success); }

/* ===== BADGE ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-primary { background: #ede9fe; color: var(--primary); }
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger  { background: #fee2e2; color: #991b1b; }
.badge-gray    { background: #f1f5f9; color: var(--gray); }
.badge-info    { background: #cffafe; color: #155e75; }

/* ===== CARD ===== */
.card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-body { padding: 24px; }
.card-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ===== FORM ELEMENTS ===== */
.form-group { margin-bottom: 18px; }
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  color: var(--text);
  background: var(--white);
  transition: var(--transition);
  outline: none;
}
.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.15);
}
.form-control::placeholder { color: var(--gray-light); }
select.form-control { cursor: pointer; }

/* ===== NAVBAR ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--dark);
}
.navbar-brand .logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-size: 1.1rem;
}
.navbar-menu { display: flex; align-items: center; gap: 8px; }
.navbar-menu a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
}
.navbar-menu a:hover { color: var(--primary); background: #ede9fe30; }
.navbar-actions { display: flex; align-items: center; gap: 10px; }

/* ===== HERO ===== */
.hero {
  padding: 90px 24px 80px;
  text-align: center;
  background: linear-gradient(160deg, #f0f4ff 0%, #fafafa 60%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79,70,229,.08) 0%, transparent 70%);
  top: -150px; right: -150px;
}
.hero::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6,182,212,.06) 0%, transparent 70%);
  bottom: -100px; left: -100px;
}
.hero-content { max-width: 800px; margin: 0 auto; position: relative; z-index: 1; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: #ede9fe; color: var(--primary);
  padding: 6px 16px; border-radius: 999px;
  font-size: 0.8rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .05em;
  margin-bottom: 24px;
}
.hero h1 { margin-bottom: 20px; }
.hero h1 span { color: var(--primary); }
.hero p { font-size: 1.15rem; color: var(--text-light); max-width: 560px; margin: 0 auto 36px; }
.hero-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex; justify-content: center; gap: 48px;
  margin-top: 60px; flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-value { font-size: 2rem; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 0.85rem; color: var(--text-light); margin-top: 2px; }

/* ===== FEATURES ===== */
.features { padding: 90px 24px; }
.section-header { text-align: center; max-width: 600px; margin: 0 auto 56px; }
.section-header p { color: var(--text-light); margin-top: 12px; font-size: 1.05rem; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.feature-card {
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--white);
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}
.feature-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
}
.feature-icon.purple { background: #ede9fe; }
.feature-icon.cyan   { background: #cffafe; }
.feature-icon.green  { background: #d1fae5; }
.feature-icon.orange { background: #ffedd5; }
.feature-icon.pink   { background: #fce7f3; }
.feature-icon.blue   { background: #dbeafe; }
.feature-card h3 { margin-bottom: 8px; }
.feature-card p { color: var(--text-light); font-size: 0.9rem; }

/* ===== PRICING ===== */
.pricing { padding: 90px 24px; background: linear-gradient(160deg, #f0f4ff 0%, #fafafa 100%); }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}
.pricing-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
}
.pricing-card.popular {
  border-color: var(--primary);
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: scale(1.03);
}
.popular-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: white;
  padding: 4px 18px; border-radius: 999px; font-size: 0.75rem; font-weight: 700;
}
.pricing-card .price { font-size: 2.5rem; font-weight: 800; color: var(--dark); margin: 12px 0 4px; }
.pricing-card .price span { font-size: 1rem; font-weight: 500; color: var(--gray); }
.pricing-card .plan-name { font-size: 1rem; font-weight: 700; color: var(--primary); text-transform: uppercase; letter-spacing: .05em; }
.pricing-card .plan-desc { color: var(--text-light); font-size: 0.875rem; margin-bottom: 24px; }
.pricing-features { text-align: left; margin-bottom: 28px; }
.pricing-features li {
  padding: 7px 0;
  font-size: 0.9rem;
  display: flex; align-items: center; gap: 10px;
  border-bottom: 1px solid var(--border);
}
.pricing-features li:last-child { border: none; }
.pricing-features li::before { content: '✓'; color: var(--success); font-weight: 700; }
.pricing-features li.disabled { color: var(--gray-light); }
.pricing-features li.disabled::before { content: '✗'; color: var(--gray-light); }

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,.7);
  padding: 60px 24px 30px;
}
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-top {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .navbar-brand { color: white; margin-bottom: 12px; }
.footer-brand p { font-size: 0.875rem; line-height: 1.7; }
.footer-col h4 { color: white; margin-bottom: 16px; font-size: 0.9rem; text-transform: uppercase; letter-spacing: .05em; }
.footer-col a { display: block; margin-bottom: 10px; font-size: 0.875rem; transition: var(--transition); }
.footer-col a:hover { color: white; }
.footer-bottom { padding-top: 24px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 0.8rem; }

/* ===== CONTAINER ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== ALERT ===== */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 16px;
  display: flex; align-items: center; gap: 10px;
}
.alert-danger  { background: #fee2e2; color: #991b1b; }
.alert-success { background: #d1fae5; color: #065f46; }
.alert-info    { background: #dbeafe; color: #1e40af; }
.alert-warning { background: #fef3c7; color: #92400e; }

/* ===== DIVIDER ===== */
.divider {
  display: flex; align-items: center; gap: 12px;
  color: var(--gray-light); font-size: 0.85rem; margin: 20px 0;
}
.divider::before, .divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .navbar-menu { display: none; }
  .footer-top { grid-template-columns: 1fr; }
  .hero { padding: 60px 16px; }
  .hero-stats { gap: 24px; }
  .pricing-card.popular { transform: scale(1); }
}