/* ═══════════════════════════════════════════════════════════════════
   ASSISTANT PRO — TECH SAAS MODERN
   variables → reset → utilities → components → sections → media queries
   ═══════════════════════════════════════════════════════════════════ */

/* ═════════════ 1. THEME TOKENS ═════════════ */
:root {
  color-scheme: light;

  /* SaaS color system (brand — fixed across themes) */
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --secondary: #10b981;
  --success-text: #047857;
  --success-bg: rgba(16, 185, 129, 0.12);

  /* Theme-aware link / accent color */
  --link-color: #4f46e5;

  /* Backgrounds */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --chip-bg: #eef2ff;

  /* Text */
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;

  /* Borders */
  --border-color: #e5e7eb;
  --border-color-hover: #d1d5db;

  /* Shadows */
  --shadow-color: 15, 23, 42;
  --shadow-sm: 0 1px 2px rgba(var(--shadow-color), 0.05);
  --shadow-md: 0 4px 12px rgba(var(--shadow-color), 0.08);
  --shadow-lg: 0 12px 32px rgba(var(--shadow-color), 0.14);

  /* Gradient CTA band + on-band tokens (brand element) */
  --cta-grad: linear-gradient(135deg, #4f46e5 0%, #7c3aed 55%, #8b5cf6 100%);
  --band-text: #ffffff;
  --band-text-soft: rgba(255, 255, 255, 0.86);
  --band-border: rgba(255, 255, 255, 0.65);
  --band-hover: rgba(255, 255, 255, 0.14);
  --btn-invert-bg: #ffffff;
  --btn-invert-text: #4338ca;

  /* Hero glow tint */
  --hero-glow: rgba(99, 102, 241, 0.10);

  /* Spacing — strict 8px grid */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Motion */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  color-scheme: dark;

  --bg-primary: #111827;
  --bg-secondary: #1f2937;
  --bg-tertiary: #374151;
  --chip-bg: #263145;

  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-tertiary: #6b7280;

  --border-color: #374151;
  --border-color-hover: #4b5563;

  --link-color: #a5b4fc;
  --success-text: #34d399;
  --success-bg: rgba(52, 211, 153, 0.16);

  --shadow-color: 0, 0, 0;
  --shadow-sm: 0 1px 2px rgba(var(--shadow-color), 0.4);
  --shadow-md: 0 4px 12px rgba(var(--shadow-color), 0.45);
  --shadow-lg: 0 12px 32px rgba(var(--shadow-color), 0.55);

  --cta-grad: linear-gradient(135deg, #3730a3 0%, #5b21b6 55%, #6d28d9 100%);
  --hero-glow: rgba(99, 102, 241, 0.18);
}

/* ═════════════ 2. RESET & BASE ═════════════ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
}

h1,
h2,
h3 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.125rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.625rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.125rem, 2.5vw, 1.375rem); }

p {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.65;
  color: var(--text-secondary);
}

a {
  color: var(--link-color);
}

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 2px solid var(--link-color);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background: var(--chip-bg);
  color: var(--text-primary);
}

/* ═════════════ 3. UTILITIES ═════════════ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-head {
  max-width: 720px;
  margin: 0 auto var(--space-6);
  text-align: center;
}

.section-head .section-sub {
  margin-top: var(--space-2);
}

.kicker {
  color: var(--link-color);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -64px;
  left: var(--space-2);
  z-index: 200;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
  transition: top 0.3s var(--ease);
}

.skip-link:focus {
  top: var(--space-1);
}

/* ═════════════ 4. BUTTONS & LINKS ═════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 44px;
  padding: 12px 24px;
  border: none;
  border-radius: 24px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.2px;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease),
    transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.28);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.36);
}

.btn-secondary {
  background: transparent;
  color: var(--link-color);
  border: 2px solid var(--link-color);
}

.btn-secondary:hover {
  background: var(--chip-bg);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 32px;
  min-height: 48px;
  font-size: 16px;
}

.btn-sm {
  padding: 10px 20px;
  min-height: 40px;
  font-size: 14px;
}

.btn-invert {
  background: var(--btn-invert-bg);
  color: var(--btn-invert-text);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.22);
}

.btn-invert:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
}

.btn-outline-invert {
  background: transparent;
  color: var(--band-text);
  border: 2px solid var(--band-border);
}

.btn-outline-invert:hover {
  background: var(--band-hover);
  transform: translateY(-2px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--link-color);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
}

.text-link::after {
  content: "\2192";
  transition: transform 0.3s var(--ease);
}

.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.text-link:hover::after {
  transform: translateX(4px);
}

/* ═════════════ 5. CARDS ═════════════ */
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease),
    transform 0.3s var(--ease);
}

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

/* ═════════════ 6. HEADER & NAV ═════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-primary);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease),
    background-color 0.3s var(--ease);
}

@supports (backdrop-filter: blur(10px)) {
  .site-header {
    background: color-mix(in srgb, var(--bg-primary) 86%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
}

.site-header.scrolled {
  border-bottom-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.nav-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-mark {
  flex: 0 0 auto;
  border-radius: var(--radius-sm);
}

.brand-name {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

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

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 6px;
  height: 2px;
  border-radius: 2px;
  background: var(--link-color);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

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

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-link[aria-current="true"] {
  color: var(--link-color);
}

.nav-link[aria-current="true"]::after {
  transform: scaleX(1);
}

.nav-cta {
  margin-left: var(--space-1);
}

/* Mobile nav toggle — hidden on desktop, 44px icon button within breakpoint */
.mobile-nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.mobile-nav-toggle:hover {
  border-color: var(--border-color-hover);
  background: var(--bg-secondary);
}

.hamburger {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: background-color 0.3s var(--ease);
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.3s var(--ease);
}

.hamburger::before {
  top: -6px;
}

.hamburger::after {
  top: 6px;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger {
  background: transparent;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: translateY(6px) rotate(45deg);
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* ═════════════ 7. HERO ═════════════ */
.hero {
  position: relative;
  padding: 96px 0 88px;
  background:
    radial-gradient(720px 360px at 12% 0%, var(--hero-glow), transparent 70%),
    var(--bg-primary);
  overflow: clip;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: var(--space-8);
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  margin-bottom: var(--space-2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--chip-bg);
  color: var(--link-color);
  font-size: 0.8125rem;
  font-weight: 600;
}

.hero-sub {
  margin-top: var(--space-3);
  max-width: 540px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.hero-note {
  margin-top: var(--space-2);
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

.hero-visual {
  position: relative;
}

.hero-img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.hero-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 10px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  box-shadow: var(--shadow-md);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.chip-priority {
  left: 24px;
  bottom: 24px;
}

.chip-sync {
  right: 24px;
  top: 24px;
}

.chip-sync svg {
  color: var(--success-text);
}

.chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--secondary);
  box-shadow: 0 0 0 4px var(--success-bg);
}

.chip-text {
  line-height: 1.35;
  color: inherit;
}

/* ═════════════ 8. TOOLS STRIP ═════════════ */
.tools-strip {
  padding: var(--space-4) 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.tools-title {
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.tools-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-1);
  margin-top: var(--space-2);
  list-style: none;
}

.tool-chip {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

/* ═════════════ 9. FEATURES ═════════════ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.feature-card {
  padding: var(--space-3);
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-2);
  border-radius: var(--radius-md);
  background: var(--chip-bg);
  color: var(--link-color);
}

.feature-card p {
  font-size: 0.95rem;
}

/* ═════════════ 10. HOW IT WORKS (steps) ═════════════ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  list-style: none;
  counter-reset: step;
}

.step-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

.step-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-bottom: 1px solid var(--border-color);
}

.step-body {
  padding: var(--space-3);
}

.step-num {
  display: block;
  margin-bottom: var(--space-1);
  color: var(--link-color);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.step-body p {
  font-size: 0.95rem;
}

/* ═════════════ 11. WORKSPACE SPLIT ═════════════ */
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8);
  align-items: center;
}

.split-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

.split-copy .section-sub {
  margin: var(--space-2) 0 var(--space-3);
  max-width: 480px;
}

.check-list {
  list-style: none;
  display: grid;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-1);
  color: var(--text-secondary);
  font-size: 1rem;
}

.check-list li::before {
  content: "\2713";
  color: var(--success-text);
  font-weight: 700;
}

/* ═════════════ 12. PRICING ═════════════ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  align-items: stretch;
}

.plan-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--space-4) var(--space-3);
}

.plan-featured {
  border-color: var(--primary);
  box-shadow: 0 12px 32px rgba(79, 70, 229, 0.18);
}

.plan-featured:hover {
  box-shadow: 0 16px 40px rgba(79, 70, 229, 0.24);
}

.plan-flag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 14px;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #ffffff;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.plan-name {
  font-size: 1.375rem;
  letter-spacing: -0.01em;
}

.plan-for {
  margin-top: 4px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.plan-desc {
  margin-top: var(--space-2);
  font-size: 0.95rem;
}

.plan-features {
  list-style: none;
  display: grid;
  gap: var(--space-1);
  margin: var(--space-3) 0 var(--space-4);
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-1);
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.plan-features li::before {
  content: "\2713";
  color: var(--success-text);
  font-weight: 700;
}

.plan-cta {
  margin-top: auto;
  width: 100%;
}

/* ═════════════ 13. DOCS ═════════════ */
.docs-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.doc-card {
  display: flex;
  flex-direction: column;
}

.doc-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-2);
  border-radius: var(--radius-md);
  background: var(--chip-bg);
  color: var(--link-color);
}

.doc-card h3 {
  font-size: 1.125rem;
}

.doc-card p {
  margin: var(--space-1) 0 var(--space-3);
  font-size: 0.95rem;
}

.doc-card .text-link {
  margin-top: auto;
  align-self: flex-start;
}

/* ═════════════ 14. BLOG ═════════════ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.post-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

.post-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-bottom: 1px solid var(--border-color);
}

.post-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-3);
}

.post-tag {
  align-self: flex-start;
  margin-bottom: var(--space-2);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--success-bg);
  color: var(--success-text);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.post-body h3 {
  font-size: 1.125rem;
}

.post-body p {
  margin: var(--space-1) 0 var(--space-3);
  font-size: 0.9375rem;
}

.post-body .text-link {
  margin-top: auto;
  align-self: flex-start;
}

/* ═════════════ 15. SUPPORT & FAQ ═════════════ */
.support-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
}

.faq {
  display: grid;
  gap: var(--space-2);
}

.faq-item {
  padding: var(--space-1) var(--space-3);
}

.faq-q {
  margin: 0;
  font-size: 1.0625rem;
}

.faq-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  min-height: 48px;
  padding: 12px 0;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.0325rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.faq-chevron {
  flex: 0 0 auto;
  color: var(--link-color);
  transition: transform 0.3s var(--ease);
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer p {
  padding-bottom: var(--space-2);
  font-size: 0.9685rem;
}

.support-aside {
  position: sticky;
  top: 110px;
}

.support-links {
  list-style: none;
  display: grid;
  gap: var(--space-1);
  margin-top: var(--space-2);
}

.support-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--link-color);
  font-weight: 500;
  text-decoration: none;
  transition: transform 0.3s var(--ease);
}

.support-links a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ═════════════ 16. CTA BAND (theme-aware gradient) ═════════════ */
.cta-band {
  padding: 80px 0;
  background: var(--cta-grad);
  text-align: center;
}

.cta-inner {
  max-width: 720px;
  margin: 0 auto;
}

.cta-band h2 {
  color: var(--band-text);
}

.cta-band p {
  margin-top: var(--space-2);
  color: var(--band-text-soft);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

/* ═════════════ 17. CONTACT ═════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.contact-card {
  display: flex;
  flex-direction: column;
}

.contact-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-2);
  border-radius: var(--radius-md);
  background: var(--chip-bg);
  color: var(--link-color);
}

.contact-card p {
  margin: var(--space-1) 0 var(--space-3);
  font-size: 0.95rem;
}

.contact-card .text-link {
  margin-top: auto;
  align-self: flex-start;
}

/* ═════════════ 18. FOOTER ═════════════ */
.site-footer {
  padding: var(--space-8) 0 var(--space-4);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr));
  gap: var(--space-6) var(--space-4);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-tagline {
  margin-top: var(--space-2);
  max-width: 320px;
  font-size: 0.9375rem;
}

.footer-col h3 {
  margin-bottom: var(--space-2);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
  display: grid;
  gap: var(--space-1);
}

.footer-col a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

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

.footer-bottom {
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-color);
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ═════════════ 19. THEME TOGGLE ═════════════ */
.theme-toggle {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  background: var(--bg-primary);
  color: var(--link-color);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
    background-color 0.3s var(--ease);
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.theme-toggle:active {
  transform: scale(0.96);
}

.icon-sun {
  display: none;
}

[data-theme="dark"] .icon-sun {
  display: block;
}

[data-theme="dark"] .icon-moon {
  display: none;
}

/* ═════════════ 20. SCROLL REVEAL (gated behind .js from script.js) ═════════════ */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.48s var(--ease), transform 0.48s var(--ease);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes nav-drop {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ═════════════ 21. MEDIA QUERIES — 1024px / 768px ═════════════ */
@media (max-width: 1024px) {
  .hero {
    padding: 72px 0 var(--space-8);
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-6);
  }

  .hero-copy {
    max-width: 640px;
    text-align: center;
  }

  .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions,
  .hero-copy .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    max-width: 640px;
    margin: 0 auto;
    width: 100%;
  }

  /* 3 col -> 2 col */
  .features-grid,
  .steps-grid,
  .pricing-grid,
  .docs-grid,
  .blog-grid,
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-6);
  }

  .split-media {
    order: -1;
  }

  .support-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
  }

  .support-aside {
    position: static;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-8) 0;
  }

  .section-head {
    margin-bottom: var(--space-4);
  }

  .container {
    padding: 0 var(--space-2);
  }

  /* Mobile navigation */
  .mobile-nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    top: calc(100% + var(--space-1));
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    padding: var(--space-2);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
  }

  .main-nav.open {
    display: flex;
    animation: nav-drop 0.25s var(--ease);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
  }

  .nav-link {
    justify-content: space-between;
    padding: 12px var(--space-2);
    border-radius: var(--radius-sm);
  }

  .nav-link::after {
    display: none;
  }

  .nav-link:hover,
  .nav-link[aria-current="true"] {
    background: var(--bg-secondary);
  }

  .nav-cta {
    margin: var(--space-1) 0 0;
    width: 100%;
  }

  /* 2 col -> 1 col */
  .features-grid,
  .steps-grid,
  .pricing-grid,
  .docs-grid,
  .blog-grid,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    padding: var(--space-6) 0 var(--space-6);
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-chip {
    padding: 8px 12px;
    font-size: 0.75rem;
  }

  .chip-priority {
    left: 12px;
    bottom: 12px;
  }

  .chip-sync {
    right: 12px;
    top: 12px;
  }

  .step-img {
    aspect-ratio: 16 / 9;
  }

  .plan-card {
    padding: var(--space-3) var(--space-2);
  }

  .cta-band {
    padding: var(--space-8) 0;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
  }

  .footer-tagline {
    max-width: none;
  }

  .theme-toggle {
    right: 16px;
    bottom: 16px;
  }
}

/* ═════════════ 22. REDUCED MOTION ═════════════ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .main-nav.open {
    animation: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Header nav spacing floor (normalizer): keep the brand and the
   menu separated when the flex container runs out of width. */
header nav, header nav > div { gap: 1rem; flex-wrap: wrap; }
@media (max-width: 1280px) { header nav ul { gap: 1rem; } }