/* ==========================================================================
   ANDROMEDA WRITER — STYLE 4: NEBULA SLATE (CLEAN SAAS GRID)
   Modern Structured SaaS Layout matching Andromeda_Web Dark Foundations
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&family=Outfit:wght@500;600;700;800;900&display=swap');

:root {
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.85);
  --bg-card-elevated: rgba(22, 33, 58, 0.95);
  --bg-input: #1e293b;
  --bg-surface: #141e33;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-focus: #8b5cf6;
  --border-pro: #8b5cf6;
  --border-premium: #38bdf8;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-accent: #38bdf8;

  --accent-purple: #8b5cf6;
  --accent-purple-light: #a78bfa;
  --accent-cyan: #38bdf8;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  --gradient-cosmic: linear-gradient(135deg, #8b5cf6 0%, #38bdf8 100%);
  --gradient-pro: linear-gradient(135deg, #8b5cf6 0%, #d946ef 100%);
  --gradient-premium: linear-gradient(135deg, #38bdf8 0%, #8b5cf6 100%);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 25px rgba(139, 92, 246, 0.25);

  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 9999px;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Ambient Glows */
.ambient-glow-1 {
  position: fixed;
  top: -120px;
  left: 20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.15), transparent 70%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
}

.ambient-glow-2 {
  position: fixed;
  top: 350px;
  right: 10%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.12), transparent 70%);
  filter: blur(90px);
  z-index: -1;
  pointer-events: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: #7dd3fc;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Variant Switcher Banner */
.variant-banner {
  background: rgba(15, 23, 42, 0.96);
  border-bottom: 1px solid var(--border-medium);
  padding: 8px 16px;
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  flex-wrap: wrap;
}

.variant-banner-title {
  font-weight: 700;
  color: var(--accent-purple-light);
  display: flex;
  align-items: center;
  gap: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.variant-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.variant-pill {
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.74rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.variant-pill:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border-color: var(--border-medium);
}

.variant-pill.active {
  background: var(--gradient-cosmic);
  color: #ffffff;
  font-weight: 700;
  border-color: transparent;
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.4);
}

/* Navbar */
.navbar {
  position: relative;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.88);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.navbar .nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--text-primary);
}

.brand-logo img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  box-shadow: 0 0 12px rgba(139, 92, 246, 0.4);
}

.brand-logo .brand-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple-light);
  border: 1px solid rgba(139, 92, 246, 0.3);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  padding: 4px 0;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  border: 1px solid transparent;
  outline: none;
}

.btn-primary {
  background: var(--gradient-cosmic);
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 2px 12px rgba(139, 92, 246, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(139, 92, 246, 0.55);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

/* Hero Section */
.hero-section {
  padding: 50px 0 30px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.3);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-purple-light);
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(2rem, 3.8vw, 3.1rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 14px;
  line-height: 1.15;
  color: #ffffff;
}

.text-gradient {
  background: var(--gradient-cosmic);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 660px;
  margin: 0 auto 28px;
}

/* Billing Toggle */
.billing-toggle-container {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--border-medium);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
}

.toggle-label {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.toggle-label.active {
  color: #ffffff;
}

.badge-discount {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.35);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--bg-input);
  border: 1px solid var(--border-medium);
  transition: .3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: #ffffff;
  transition: .3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 50%;
}

input:checked + .slider {
  background: var(--gradient-cosmic);
  border-color: transparent;
}

input:checked + .slider:before {
  transform: translateX(20px);
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 36px auto 60px;
}

.pricing-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
}

.pricing-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured-pro {
  border: 1px solid var(--border-pro);
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  box-shadow: 0 0 35px rgba(139, 92, 246, 0.35), var(--shadow-lg);
  transform: scale(1.02);
}

.pricing-card.featured-pro:hover {
  transform: scale(1.02) translateY(-4px);
}

.pricing-card.featured-premium {
  border: 1px solid var(--border-premium);
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  box-shadow: 0 0 35px rgba(56, 189, 248, 0.25), var(--shadow-lg);
}

.card-badge {
  position: absolute;
  top: -12px;
  right: 24px;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.badge-popular {
  background: var(--gradient-cosmic);
  color: #ffffff;
}

.badge-ultimate {
  background: var(--gradient-premium);
  color: #ffffff;
}

.plan-header-box {
  margin-bottom: 20px;
}

.plan-name {
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: #ffffff;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.45;
  min-height: 40px;
}

.card-price-block {
  padding: 16px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 22px;
}

.price-flex {
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.currency {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.price-amount {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  color: #ffffff;
}

.period {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-left: 4px;
}

.trial-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-purple-light);
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.28);
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  margin-top: 8px;
}

.trial-badge-gold {
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.28);
}

.billing-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.features-list {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.feature-item strong {
  color: var(--text-primary);
}

.feature-check {
  width: 16px;
  height: 16px;
  min-width: 16px;
  margin-top: 2px;
  color: var(--accent-emerald);
}

.btn-plan {
  width: 100%;
  padding: 12px 18px;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
}

.btn-basic {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
}

.btn-basic:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.btn-pro {
  background: var(--gradient-cosmic);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(139, 92, 246, 0.4);
}

.btn-pro:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(139, 92, 246, 0.6);
}

.btn-premium {
  background: var(--gradient-premium);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.35);
}

.btn-premium:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(56, 189, 248, 0.55);
}

/* Comparison Section */
.comparison-section {
  padding: 60px 0;
  border-top: 1px solid var(--border-subtle);
}

.section-header {
  text-align: center;
  margin-bottom: 36px;
}

.section-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 800;
  color: #ffffff;
}

.comparison-table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.comparison-table th, .comparison-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.comparison-table th {
  background: rgba(15, 23, 42, 0.95);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
}

.comparison-table .col-feature { width: 40%; }
.comparison-table .col-plan { width: 20%; text-align: center; }

.comparison-table .category-row td {
  background: rgba(30, 41, 59, 0.5);
  font-weight: 700;
  color: var(--accent-purple-light);
  text-transform: uppercase;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
}

.comparison-table .cell-plan {
  text-align: center;
  color: var(--text-secondary);
}

.cell-icon-check {
  color: var(--accent-emerald);
  font-weight: 800;
}

.cell-icon-cross {
  color: var(--text-muted);
}

/* FAQ Section */
.faq-section {
  padding: 60px 0 80px;
  border-top: 1px solid var(--border-subtle);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  padding: 18px 22px;
  font-weight: 600;
  font-size: 0.96rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.faq-toggle-icon {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-normal);
  color: var(--text-muted);
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(180deg);
  color: var(--accent-cyan);
}

.faq-answer {
  display: none;
  padding: 0 22px 18px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 12px;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Checkout Modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.checkout-modal {
  background: #0d1322;
  border: 1px solid var(--border-pro);
  border-radius: var(--radius-lg);
  padding: 30px;
  width: 100%;
  max-width: 480px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.85), var(--shadow-glow);
  position: relative;
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 18px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close-btn:hover {
  color: #ffffff;
}

.modal-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.modal-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.checkout-summary-box {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 18px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.84rem;
  margin-bottom: 6px;
}

.summary-row.total {
  border-top: 1px solid var(--border-subtle);
  padding-top: 8px;
  margin-top: 8px;
  font-weight: 700;
  font-size: 0.95rem;
}

.payment-methods-grid {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}

.pm-tab {
  flex: 1;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  font-size: 0.78rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  color: var(--text-secondary);
}

.pm-tab.active {
  background: rgba(139, 92, 246, 0.15);
  border-color: var(--accent-purple);
  color: #ffffff;
}

.form-group {
  margin-bottom: 14px;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border-medium);
  color: #ffffff;
  font-size: 0.88rem;
  outline: none;
}

.form-input:focus {
  border-color: var(--accent-cyan);
}

.btn-checkout-submit {
  width: 100%;
  padding: 12px;
  border-radius: var(--radius-md);
  background: var(--gradient-cosmic);
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  margin-top: 6px;
}

.btn-checkout-submit:hover {
  box-shadow: 0 4px 18px rgba(139, 92, 246, 0.5);
}

.checkout-trust-badge {
  text-align: center;
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-top: 14px;
}

/* Footer */
.footer {
  background: #060911;
  border-top: 1px solid var(--border-subtle);
  padding: 40px 0 20px;
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 30px;
}

.footer-brand p {
  margin-top: 10px;
  max-width: 320px;
  color: var(--text-muted);
  line-height: 1.45;
}

.footer-col h4 {
  font-size: 0.82rem;
  color: #ffffff;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 7px;
}

.footer-col a {
  color: var(--text-secondary);
}

.footer-col a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

@media (max-width: 980px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
  }
  .pricing-card.featured-pro {
    transform: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}