/* ==========================================================================
   MARKETING-FC DESIGN SYSTEM (STELLAR INSPIRED + LIGHT/DARK DUAL THEME)
   100% Vanilla CSS - Zero External Framework Overhead
   ========================================================================== */

:root {
  /* Color Palette - Dark Theme (Default) */
  --bg-primary: #090a0f;
  --bg-secondary: #0f111a;
  --bg-card: rgba(18, 21, 33, 0.7);
  --bg-card-hover: rgba(26, 30, 46, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-input: rgba(18, 21, 33, 0.9);

  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.35);

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

  --accent-purple: #818cf8;
  --accent-blue: #38bdf8;
  --accent-indigo: #6366f1;
  --accent-gradient: linear-gradient(135deg, #a855f7 0%, #6366f1 50%, #38bdf8 100%);
  --accent-glow: 0 0 35px rgba(99, 102, 241, 0.45);

  --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --badge-bg: rgba(99, 102, 241, 0.12);
  --badge-border: rgba(99, 102, 241, 0.25);
  --badge-text: #a5b4fc;

  --hero-glow: radial-gradient(circle at 50% -20%, rgba(99, 102, 241, 0.25) 0%, rgba(168, 85, 247, 0.15) 30%, transparent 70%);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;

  --transition-fast: 0.18s ease;
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Mode Overrides */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-glass: rgba(15, 23, 42, 0.03);
  --bg-input: #ffffff;

  --border-color: rgba(15, 23, 42, 0.08);
  --border-glow: rgba(99, 102, 241, 0.4);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --accent-purple: #7c3aed;
  --accent-blue: #0284c7;
  --accent-indigo: #4f46e5;
  --accent-gradient: linear-gradient(135deg, #7c3aed 0%, #4f46e5 50%, #0284c7 100%);
  --accent-glow: 0 0 35px rgba(99, 102, 241, 0.25);

  --card-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.08);
  --badge-bg: rgba(79, 70, 229, 0.08);
  --badge-border: rgba(79, 70, 229, 0.2);
  --badge-text: #4338ca;

  --hero-glow: radial-gradient(circle at 50% -20%, rgba(99, 102, 241, 0.15) 0%, rgba(168, 85, 247, 0.08) 35%, transparent 70%);
}

/* Base Reset & Typography */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

body {
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  background: var(--hero-glow), var(--bg-primary);
  background-attachment: fixed;
}

/* Background Particle / Grid Overlay */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, var(--border-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-color) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 50% 30%, black 40%, transparent 80%);
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  transition: all var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
}

.brand-icon svg {
  width: 22px;
  height: 22px;
  color: #ffffff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.925rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
}

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

/* Control Buttons (Lang + Theme) */
.icon-btn {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
}

.lang-select {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-fast);
}

.lang-select:focus {
  border-color: var(--accent-indigo);
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 10px 22px;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
}

/* Hero Section */
.hero {
  padding-top: 160px;
  padding-bottom: 90px;
  text-align: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--badge-text);
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 36px auto;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  color: var(--text-muted);
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Spotlight Card System (Stellar Signature) */
.spotlight-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: border-color var(--transition-normal), transform var(--transition-normal);
}

.spotlight-card::before {
  content: '';
  position: absolute;
  top: var(--mouse-y, -1000px);
  left: var(--mouse-x, -1000px);
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, var(--border-glow) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.spotlight-card:hover::before {
  opacity: 1;
}

.spotlight-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-3px);
}

.spotlight-content {
  position: relative;
  z-index: 1;
}

/* Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.bento-col-8 {
  grid-column: span 8;
}

.bento-col-4 {
  grid-column: span 4;
}

.bento-col-6 {
  grid-column: span 6;
}

.bento-col-12 {
  grid-column: span 12;
}

@media (max-width: 900px) {
  .bento-col-8, .bento-col-4, .bento-col-6 {
    grid-column: span 12;
  }
}

/* Feature Icons */
.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--accent-indigo);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Terminal / Code / LLM Proof Box */
.terminal-box {
  background: #050608;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 18px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.85rem;
  color: #38bdf8;
  margin-top: 20px;
  line-height: 1.5;
  overflow-x: auto;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

/* Comparison Table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 32px;
  font-size: 0.95rem;
}

.comparison-table th, .comparison-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.comparison-table tr:hover td {
  background: var(--bg-glass);
}

.status-check {
  color: #10b981;
  font-weight: 700;
}

.status-cross {
  color: #ef4444;
  font-weight: 700;
}

/* Pricing Grid */
.pricing-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.pricing-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--accent-gradient);
  color: #ffffff;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
}

.price {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 18px 0;
}

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

.pricing-features {
  list-style: none;
  margin: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.925rem;
  color: var(--text-secondary);
}

/* Quote / Contact Form */
.quote-section {
  padding: 90px 0;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

@media (max-width: 700px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group.full {
  grid-column: span 2;
}

@media (max-width: 700px) {
  .form-group.full {
    grid-column: span 1;
  }
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input, .form-textarea, .form-select {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--accent-indigo);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px 0;
  background: var(--bg-secondary);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 320px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 16px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .navbar {
    height: 64px;
  }
  .hero {
    padding-top: 120px;
  }
}