/* ============================================================
   NexStack — Design System
   Palette: Deep space dark + Electric cyan + Violet accent
   Fonts: Clash Display + Plus Jakarta Sans
   ============================================================ */

/* ── CSS Variables ── */
:root {
  /* Dark theme (default) */
  --bg-primary: #080B14;
  --bg-secondary: #0D1120;
  --bg-card: #111827;
  --bg-card-hover: #161f35;
  --border: rgba(99, 179, 237, 0.12);
  --border-hover: rgba(99, 179, 237, 0.35);

  --text-primary: #EEF2FF;
  --text-secondary: #94A3B8;
  --text-muted: #4B5563;

  --accent-cyan: #22D3EE;
  --accent-violet: #818CF8;
  --accent-pink: #F472B6;
  --accent-green: #34D399;

  --gradient-hero: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(34,211,238,0.18) 0%, transparent 70%),
                   radial-gradient(ellipse 60% 50% at 80% 50%, rgba(129,140,248,0.12) 0%, transparent 60%),
                   radial-gradient(ellipse 50% 40% at 20% 80%, rgba(244,114,182,0.08) 0%, transparent 60%);
  --gradient-text: linear-gradient(135deg, #22D3EE 0%, #818CF8 50%, #F472B6 100%);
  --gradient-btn: linear-gradient(135deg, #22D3EE 0%, #818CF8 100%);
  --gradient-card: linear-gradient(135deg, rgba(34,211,238,0.06) 0%, rgba(129,140,248,0.04) 100%);

  --shadow-card: 0 4px 24px rgba(0,0,0,0.4), 0 1px 0 rgba(99,179,237,0.08) inset;
  --shadow-btn: 0 0 24px rgba(34,211,238,0.3);
  --shadow-glow: 0 0 40px rgba(34,211,238,0.15);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --font-display: 'Clash Display', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  --nav-height: 72px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #F8FAFF;
  --bg-secondary: #EEF2FF;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F0F4FF;
  --border: rgba(99, 102, 241, 0.15);
  --border-hover: rgba(99, 102, 241, 0.4);

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;

  --accent-cyan: #0891B2;
  --accent-violet: #6366F1;
  --accent-pink: #EC4899;
  --accent-green: #059669;

  --gradient-hero: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(8,145,178,0.1) 0%, transparent 70%),
                   radial-gradient(ellipse 60% 50% at 80% 50%, rgba(99,102,241,0.08) 0%, transparent 60%);
  --gradient-text: linear-gradient(135deg, #0891B2 0%, #6366F1 50%, #EC4899 100%);
  --gradient-btn: linear-gradient(135deg, #0891B2 0%, #6366F1 100%);
  --gradient-card: linear-gradient(135deg, rgba(8,145,178,0.04) 0%, rgba(99,102,241,0.03) 100%);

  --shadow-card: 0 4px 24px rgba(0,0,0,0.08), 0 1px 0 rgba(99,102,241,0.1) inset;
  --shadow-btn: 0 0 24px rgba(8,145,178,0.2);
  --shadow-glow: 0 0 40px rgba(8,145,178,0.1);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }
code {
  font-family: 'Courier New', monospace;
  background: rgba(34,211,238,0.1);
  color: var(--accent-cyan);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.875em;
}

/* ── Container ── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Typography ── */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.15; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.08);
  opacity: 0;
  transition: opacity var(--transition);
}
.btn:hover::before { opacity: 1; }

.btn--sm  { padding: 8px 18px; font-size: 0.875rem; }
.btn--lg  { padding: 14px 28px; font-size: 1rem; }
.btn--full { width: 100%; justify-content: center; }

.btn--primary {
  background: var(--gradient-btn);
  color: #fff;
  box-shadow: var(--shadow-btn);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(34,211,238,0.45);
}
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--border-hover);
  background: var(--bg-card);
  transform: translateY(-2px);
}

/* ── Gradient Text ── */
.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Section Shared ── */
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: rgba(34,211,238,0.1);
  border: 1px solid rgba(34,211,238,0.2);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--text-primary);
  margin-bottom: 16px;
}
.section-title em {
  font-style: normal;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-sub {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.7;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(8, 11, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}

[data-theme="light"] .navbar.scrolled {
  background: rgba(248, 250, 255, 0.85);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}
.logo-icon { font-size: 1.4rem; }
.logo-text { letter-spacing: -0.02em; }

.navbar__links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.navbar__links a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: color var(--transition);
  font-weight: 500;
}
.navbar__links a:hover { color: var(--text-primary); }

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

.theme-toggle {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-size: 1.1rem;
  transition: all var(--transition);
}
.theme-toggle:hover {
  border-color: var(--border-hover);
  transform: rotate(20deg);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-height) + 60px) 0 80px;
  background: var(--bg-primary);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  pointer-events: none;
}

/* Mesh orbs */
.hero__mesh { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }

.mesh-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: orbFloat 8s ease-in-out infinite;
}
.mesh-orb--1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(34,211,238,0.4) 0%, transparent 70%);
  top: -200px; left: -100px;
  animation-delay: 0s;
}
.mesh-orb--2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(129,140,248,0.35) 0%, transparent 70%);
  top: 10%; right: -150px;
  animation-delay: -3s;
}
.mesh-orb--3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(244,114,182,0.25) 0%, transparent 70%);
  bottom: 0; left: 30%;
  animation-delay: -5s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -20px) scale(1.05); }
  66%       { transform: translate(-20px, 15px) scale(0.97); }
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 860px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
  letter-spacing: 0.02em;
}
.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}

.hero__headline {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.1875rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.75;
  font-weight: 300;
}

.hero__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 40px;
  backdrop-filter: blur(10px);
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 32px;
}
.stat__num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}
.stat__label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}
.stat__divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

.hero__scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.scroll-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  animation: scrollBounce 1.8s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translateY(0); opacity: 1; }
  50%       { transform: rotate(45deg) translateY(6px); opacity: 0.4; }
}

/* ============================================================
   FEATURES
   ============================================================ */
.features {
  padding: 120px 0;
  background: var(--bg-secondary);
  position: relative;
}
.features::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  cursor: default;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity var(--transition);
}

.feature-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-btn);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.feature-card:hover::before { opacity: 1; }
.feature-card:hover::after  { transform: scaleX(1); }

.feature-card--wide { grid-column: span 2; }

.feature-card__icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-sm);
  background: rgba(34,211,238,0.1);
  border: 1px solid rgba(34,211,238,0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
  transition: all var(--transition);
}
.feature-card:hover .feature-card__icon {
  background: rgba(34,211,238,0.18);
  box-shadow: 0 0 20px rgba(34,211,238,0.2);
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
  position: relative; z-index: 1;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
  position: relative; z-index: 1;
}

.feature-card__tag {
  display: inline-block;
  margin-top: 16px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-violet);
  background: rgba(129,140,248,0.1);
  border: 1px solid rgba(129,140,248,0.2);
  padding: 3px 10px;
  border-radius: 100px;
  position: relative; z-index: 1;
}

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.how-it-works {
  padding: 120px 0;
  background: var(--bg-primary);
}

.steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
}

.step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 24px;
}

.step__number {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 20px;
  opacity: 0.7;
}

.step__content h3 {
  font-size: 1.125rem;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.step__content p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.step__connector {
  flex-shrink: 0;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  margin-top: 28px;
  opacity: 0.4;
  position: relative;
}
.step__connector::after {
  content: '';
  position: absolute;
  right: -5px; top: -4px;
  width: 10px; height: 10px;
  border-right: 2px solid var(--accent-violet);
  border-top: 2px solid var(--accent-violet);
  transform: rotate(45deg);
}

/* ============================================================
   PRICING
   ============================================================ */
.pricing {
  padding: 120px 0;
  background: var(--bg-secondary);
}

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

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  position: relative;
  transition: all var(--transition);
}
.pricing-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.pricing-card--featured {
  border-color: rgba(34,211,238,0.4);
  background: linear-gradient(160deg, rgba(34,211,238,0.06) 0%, var(--bg-card) 50%);
  box-shadow: 0 0 40px rgba(34,211,238,0.1);
  transform: scale(1.03);
}
.pricing-card--featured:hover { transform: scale(1.03) translateY(-4px); }

.pricing-card__badge {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-btn);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 100px;
  white-space: nowrap;
  letter-spacing: 0.04em;
}

.pricing-card__tier {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 12px;
}
.price-amount {
  font-family: var(--font-display);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}
.price-period {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.pricing-card__desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.pricing-card__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}
.pricing-card__features li {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  padding: 120px 0;
  background: var(--bg-primary);
  position: relative;
}
.contact::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact__copy .section-header {
  text-align: left;
  margin-bottom: 24px;
}
.contact__copy .section-title { font-size: clamp(2rem, 3.5vw, 2.75rem); }
.contact__copy p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 32px;
}

.contact__social {
  display: flex;
  gap: 12px;
}
.social-link {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.social-link:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.optional { color: var(--text-muted); font-weight: 400; }

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 0.9375rem;
  transition: all var(--transition);
  outline: none;
  width: 100%;
  -webkit-appearance: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(34,211,238,0.12);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: #F87171;
  box-shadow: 0 0 0 3px rgba(248,113,113,0.12);
}

.form-error {
  font-size: 0.8125rem;
  color: #F87171;
  min-height: 18px;
}

.form-group textarea { resize: vertical; min-height: 90px; }

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394A3B8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-success {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(52,211,153,0.1);
  border: 1px solid rgba(52,211,153,0.3);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-size: 0.9375rem;
  color: var(--accent-green);
}

.spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
  padding: 64px 0 48px;
}

.footer__brand p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 220px;
  line-height: 1.6;
}

.footer__col h4 {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}
.footer__col a {
  display: block;
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  transition: color var(--transition);
}
.footer__col a:hover { color: var(--text-primary); }

.footer__bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
}
.footer__bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */

/* Fade up on load */
.animate-fade-up {
  opacity: 0;
  transform: translateY(28px);
  animation: fadeUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: var(--delay, 0s);
}
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Scroll-triggered reveal */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.65s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.features-grid .feature-card:nth-child(1) { transition-delay: 0.05s; }
.features-grid .feature-card:nth-child(2) { transition-delay: 0.1s; }
.features-grid .feature-card:nth-child(3) { transition-delay: 0.15s; }
.features-grid .feature-card:nth-child(4) { transition-delay: 0.2s; }
.features-grid .feature-card:nth-child(5) { transition-delay: 0.25s; }
.features-grid .feature-card:nth-child(6) { transition-delay: 0.3s; }

.steps .step:nth-child(1) { transition-delay: 0.05s; }
.steps .step:nth-child(3) { transition-delay: 0.15s; }
.steps .step:nth-child(5) { transition-delay: 0.25s; }

.pricing-grid .pricing-card:nth-child(1) { transition-delay: 0.05s; }
.pricing-grid .pricing-card:nth-child(2) { transition-delay: 0.12s; }
.pricing-grid .pricing-card:nth-child(3) { transition-delay: 0.19s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card--wide { grid-column: span 2; }
  .footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer__brand { grid-column: span 2; }
}

@media (max-width: 768px) {
  .navbar__links { display: none; }
  .navbar__links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height); left: 0; right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 24px;
    gap: 20px;
    z-index: 99;
  }
  .hamburger { display: flex; }

  .hero__stats { padding: 16px 20px; gap: 0; }
  .stat { padding: 0 16px; }
  .stat__num { font-size: 1.375rem; }

  .features-grid { grid-template-columns: 1fr; }
  .feature-card--wide { grid-column: span 1; }

  .steps { flex-direction: column; align-items: center; }
  .step__connector { width: 2px; height: 40px; margin: 0; }
  .step__connector::after {
    right: -4px; top: auto; bottom: -5px;
    border-right: none; border-bottom: none;
    border-left: 2px solid var(--accent-violet);
    border-bottom: 2px solid var(--accent-violet);
    transform: rotate(-45deg);
  }

  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .pricing-card--featured { transform: none; }
  .pricing-card--featured:hover { transform: translateY(-4px); }

  .contact__inner { grid-template-columns: 1fr; gap: 48px; }
  .form-row { grid-template-columns: 1fr; }

  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: span 2; }
  .footer__bottom .container { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__cta .btn { justify-content: center; }
  .hero__stats { flex-direction: column; gap: 16px; }
  .stat__divider { width: 40px; height: 1px; }
  .contact-form { padding: 24px; }
  .footer__inner { grid-template-columns: 1fr; }
  .footer__brand { grid-column: span 1; }
}