/* ===================================================
   SheetMind AI — Global Styles
   Design System: Dark SaaS inspired by Linear/Stripe
   =================================================== */

/* ---------- CSS Variables ---------- */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --primary-glow: rgba(99, 102, 241, 0.25);

  --bg: #080811;
  --bg-surface: #0f0f1e;
  --bg-card: #14142a;
  --bg-card-hover: #1a1a34;
  --bg-input: #0f0f1e;

  --border: #22223a;
  --border-light: #2a2a4a;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #4a5568;

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.1);
  --info: #3b82f6;

  --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(99,102,241,0.12) 0%, rgba(139,92,246,0.12) 100%);

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);

  --transition: all 0.2s ease;
  --transition-slow: all 0.35s ease;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; }
button { cursor: pointer; border: none; background: none; }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.1rem; }
p { color: var(--text-secondary); }

.text-gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-primary { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-sm { font-size: 0.85rem; }
.text-xs { font-size: 0.75rem; }
.text-lg { font-size: 1.1rem; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* ---------- Layout Utilities ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.container-sm { max-width: 760px; margin: 0 auto; padding: 0 1.5rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.w-full { width: 100%; }
.h-full { height: 100%; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.py-1 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-2 { padding-top: 1rem; padding-bottom: 1rem; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.relative { position: relative; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.5rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  text-decoration: none;
}
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 15px rgba(99,102,241,0.4);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99,102,241,0.5);
  color: #fff;
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}
.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--primary);
  color: var(--primary-light);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
}
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-card); }

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239,68,68,0.3);
}
.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-sm { padding: 0.45rem 1rem; font-size: 0.82rem; }
.btn-lg { padding: 0.85rem 2rem; font-size: 1rem; }
.btn-icon { padding: 0.6rem; border-radius: var(--radius-sm); }
.btn-full { width: 100%; justify-content: center; }

.btn-loading::after {
  content: '';
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: var(--transition);
}
.card:hover { border-color: var(--border-light); }
.card-hover:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

/* ---------- Forms ---------- */
.form-group { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1rem; }
.form-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
}
.form-control {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: var(--transition);
  width: 100%;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.form-control::placeholder { color: var(--text-muted); }
.form-hint { font-size: 0.78rem; color: var(--text-muted); }
.form-error { font-size: 0.78rem; color: var(--danger); }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.badge-primary { background: var(--primary-glow); color: var(--primary-light); border: 1px solid rgba(99,102,241,0.3); }
.badge-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(16,185,129,0.3); }
.badge-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid rgba(245,158,11,0.3); }
.badge-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(239,68,68,0.3); }
.badge-muted { background: rgba(100,116,139,0.1); color: var(--text-muted); border: 1px solid rgba(100,116,139,0.2); }

/* ---------- Divider ---------- */
.divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.divider span { font-size: 0.8rem; color: var(--text-muted); white-space: nowrap; }

/* ---------- Alerts ---------- */
.alert {
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin-bottom: 1rem;
}
.alert svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 1px; }
.alert-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(16,185,129,0.2); }
.alert-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(239,68,68,0.2); }
.alert-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid rgba(245,158,11,0.2); }
.alert-info { background: rgba(59,130,246,0.1); color: var(--info); border: 1px solid rgba(59,130,246,0.2); }

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(8, 8, 17, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  height: 64px;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}
.logo-icon {
  width: 32px; height: 32px;
  background: var(--gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav-links a {
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--text-primary); background: var(--bg-card); }
.nav-links a.active { color: var(--primary-light); }
.nav-actions { display: flex; align-items: center; gap: 0.75rem; }

/* Mobile nav toggle */
.nav-toggle { display: none; padding: 0.5rem; border-radius: var(--radius-sm); cursor: pointer; }
.nav-toggle svg { color: var(--text-secondary); }
.nav-mobile { display: none; }

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 1.5rem 5rem;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(99,102,241,0.15) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(139,92,246,0.08) 0%, transparent 60%);
  pointer-events: none;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: var(--primary-glow);
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 1.75rem;
  letter-spacing: 0.02em;
}
.hero h1 { margin-bottom: 1.25rem; max-width: 800px; }
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}
.hero-actions { display: flex; align-items: center; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  margin-top: 3.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.hero-stat { text-align: center; }
.hero-stat-value { font-size: 1.6rem; font-weight: 700; color: var(--text-primary); }
.hero-stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.15rem; }
.hero-preview {
  margin-top: 4rem;
  width: 100%;
  max-width: 900px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg), 0 0 80px rgba(99,102,241,0.1);
}
.preview-bar {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.preview-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.preview-dot:nth-child(1) { background: #ef4444; }
.preview-dot:nth-child(2) { background: #f59e0b; }
.preview-dot:nth-child(3) { background: #10b981; }
.preview-content {
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 1rem;
  min-height: 280px;
}
.preview-sidebar {
  background: var(--bg-surface);
  border-radius: var(--radius);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.preview-nav-item {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.preview-nav-item.active { background: var(--primary-glow); color: var(--primary-light); }
.preview-main { display: flex; flex-direction: column; gap: 0.75rem; }
.preview-stat-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 0.5rem; }
.preview-stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
}
.preview-stat-card small { font-size: 0.65rem; color: var(--text-muted); }
.preview-stat-card strong { font-size: 1rem; color: var(--text-primary); display: block; margin-top: 0.2rem; }
.preview-chart-area {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  flex: 1;
  display: flex;
  align-items: flex-end;
  gap: 0.3rem;
}
.preview-bar-item {
  flex: 1;
  border-radius: 3px 3px 0 0;
  opacity: 0.8;
}

/* ---------- Sections ---------- */
.section { padding: 6rem 0; }
.section-sm { padding: 3rem 0; }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header h2 { margin-bottom: 0.85rem; }
.section-header p { font-size: 1.05rem; max-width: 540px; margin: 0 auto; }
.section-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary-light);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

/* ---------- Features Grid ---------- */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition-slow);
}
.feature-card:hover {
  border-color: var(--primary);
  box-shadow: 0 0 30px rgba(99,102,241,0.1);
  transform: translateY(-3px);
}
.feature-icon {
  width: 44px; height: 44px;
  background: var(--gradient-subtle);
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.1rem;
  color: var(--primary-light);
}
.feature-icon svg { width: 20px; height: 20px; }
.feature-card h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.875rem; line-height: 1.65; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; position: relative; }
.steps::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 12.5%;
  right: 12.5%;
  height: 1px;
  background: linear-gradient(90deg, var(--border), var(--primary), var(--border));
  opacity: 0.5;
}
.step { text-align: center; padding: 0 1rem; }
.step-num {
  width: 48px; height: 48px;
  background: var(--gradient);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin: 0 auto 1.1rem;
  position: relative;
  z-index: 1;
  box-shadow: 0 4px 15px rgba(99,102,241,0.4);
}
.step h3 { font-size: 0.95rem; margin-bottom: 0.4rem; }
.step p { font-size: 0.82rem; }

/* ---------- Pricing ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; align-items: start; }
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
}
.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: 0 0 40px rgba(99,102,241,0.15), inset 0 0 60px rgba(99,102,241,0.03);
}
.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.9rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}
.pricing-plan { font-size: 0.8rem; font-weight: 600; color: var(--primary-light); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.5rem; }
.pricing-price { margin: 1rem 0; }
.pricing-price .amount { font-size: 2.8rem; font-weight: 800; color: var(--text-primary); }
.pricing-price .period { color: var(--text-muted); font-size: 0.85rem; }
.pricing-desc { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 1.5rem; }
.pricing-features { list-style: none; margin: 1.5rem 0; display: flex; flex-direction: column; gap: 0.6rem; }
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.pricing-features li svg {
  color: var(--success);
  width: 16px; height: 16px;
  flex-shrink: 0;
  margin-top: 1px;
}
.pricing-features li.disabled { opacity: 0.4; }
.pricing-features li.disabled svg { color: var(--text-muted); }

/* ---------- Testimonials ---------- */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}
.testimonial-stars { color: #f59e0b; font-size: 0.9rem; letter-spacing: 2px; margin-bottom: 1rem; }
.testimonial-text { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 1.25rem; }
.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }
.testimonial-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  flex-shrink: 0;
}
.testimonial-name { font-size: 0.875rem; font-weight: 600; }
.testimonial-role { font-size: 0.75rem; color: var(--text-muted); }

/* ---------- FAQ ---------- */
.faq { max-width: 700px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 0;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  gap: 1rem;
  transition: var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}
.faq-question:hover { color: var(--primary-light); }
.faq-icon {
  width: 22px; height: 22px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1;
}
.faq-item.open .faq-icon { background: var(--primary-glow); border-color: var(--primary); color: var(--primary-light); transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.25s ease;
}
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer p { padding-bottom: 1.2rem; font-size: 0.9rem; line-height: 1.7; }

/* ---------- CTA Section ---------- */
.cta-section {
  background: var(--gradient-subtle);
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius-xl);
  padding: 4rem 2rem;
  text-align: center;
  margin: 3rem 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(99,102,241,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section h2 { margin-bottom: 1rem; }
.cta-section p { font-size: 1.05rem; margin-bottom: 2rem; max-width: 480px; margin-left: auto; margin-right: auto; }
.cta-section .cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 3.5rem 0 2rem;
  color: var(--text-muted);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}
.footer-brand p { font-size: 0.875rem; margin-top: 0.75rem; line-height: 1.65; max-width: 280px; }
.footer-col h4 { font-size: 0.8rem; font-weight: 600; color: var(--text-primary); letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 0.85rem; }
.footer-col ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col ul a { font-size: 0.875rem; color: var(--text-muted); }
.footer-col ul a:hover { color: var(--text-secondary); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }

/* ---------- Toast Notifications ---------- */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.toast {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 0.85rem 1.25rem;
  min-width: 280px;
  max-width: 380px;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s ease;
}
.toast.fade-out { animation: fadeOut 0.3s ease forwards; }
.toast-icon { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }
.toast-title { font-size: 0.875rem; font-weight: 600; margin-bottom: 0.15rem; }
.toast-msg { font-size: 0.8rem; color: var(--text-secondary); }
.toast.success { border-left: 3px solid var(--success); }
.toast.success .toast-icon { color: var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.error .toast-icon { color: var(--danger); }
.toast.info { border-left: 3px solid var(--primary); }
.toast.info .toast-icon { color: var(--primary-light); }

@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeOut { from { opacity: 1; transform: translateY(0); } to { opacity: 0; transform: translateY(-10px); } }

/* ---------- Loader ---------- */
.loader-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8,8,17,0.85);
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
.loader-spinner {
  width: 44px; height: 44px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn:not(:last-child) { display: none; }
  .nav-toggle { display: flex; }
  .nav-mobile {
    display: none;
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 99;
  }
  .nav-mobile.open { display: flex; }
  .nav-mobile a {
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
  }
  .hero { padding: 7rem 1rem 4rem; }
  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.75rem; text-align: center; }
  .hero-stats { gap: 1.5rem; }
  .preview-content { grid-template-columns: 1fr; }
  .preview-sidebar { display: none; }
}

@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .cta-section { padding: 2.5rem 1rem; }
}

/* ---------- Animations ---------- */
.fade-in { animation: fadeIn 0.5s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ---------- Selection ---------- */
::selection { background: var(--primary-glow); color: var(--primary-light); }