/* ==========================================================================
   Worklize Factory — Design System Tokens + Components + Responsive
   ========================================================================== */

/* ---------- Design Tokens (from DESIGN.md) ---------- */
:root {
  /* Surfaces */
  --bg: oklch(99% 0.002 250);
  --surface: oklch(100% 0 0);
  --surface-raised: oklch(97% 0.003 250);
  --surface-dark: oklch(15% 0.015 260);

  /* Foreground */
  --fg: oklch(15% 0.015 260);
  --fg-secondary: oklch(45% 0.01 260);
  --fg-tertiary: oklch(62% 0.008 260);
  --fg-inverse: oklch(99% 0.002 250);

  /* Accent — Electric Teal */
  --accent: oklch(62% 0.17 175);
  --accent-hover: oklch(56% 0.17 175);
  --accent-subtle: oklch(95% 0.04 175);
  --accent-glow: oklch(62% 0.17 175 / 0.15);

  /* Semantic */
  --success: oklch(62% 0.17 145);
  --warn: oklch(75% 0.15 80);
  --danger: oklch(55% 0.2 25);
  --info: oklch(60% 0.12 240);

  /* Borders */
  --border: oklch(90% 0.005 250);
  --border-strong: oklch(82% 0.008 260);

  /* Typography */
  --font-display: 'Space Grotesk', 'Inter', -apple-system, system-ui, sans-serif;
  --font-body: 'Inter', -apple-system, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-section: clamp(64px, 8vw, 120px);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --duration-fast: 150ms;
  --duration-normal: 200ms;
  --duration-slow: 400ms;

  /* Z-index */
  --z-header: 100;
  --z-mobile-menu: 200;
  --z-whatsapp: 90;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
  color: inherit;
}

input, textarea, select {
  font: inherit;
  color: inherit;
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--accent);
  color: var(--bg);
  font-weight: 500;
  border-radius: var(--radius-md);
  z-index: 9999;
  transition: top var(--duration-fast) var(--ease-out);
}

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

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: clamp(20px, 4vw, 48px);
  padding-right: clamp(20px, 4vw, 48px);
}

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

h1 {
  font-size: clamp(32px, 5vw, 64px);
  font-weight: 600;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(24px, 3.5vw, 40px);
  font-weight: 600;
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 500;
  letter-spacing: -0.01em;
}

h4 {
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 500;
  letter-spacing: 0em;
}

p {
  color: var(--fg-secondary);
  line-height: 1.65;
}

/* ---------- Section ---------- */
.section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(11px, 0.9vw, 12px);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.section-title {
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--fg-secondary);
  max-width: 640px;
  line-height: 1.6;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  font-family: var(--font-body);
  font-size: clamp(14px, 1.2vw, 16px);
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--radius-md);
  transition: background var(--duration-fast) var(--ease-out),
              transform 100ms var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-primary:active {
  transform: translateY(0);
  background: oklch(52% 0.17 175);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

.btn-secondary:hover {
  background: var(--accent-subtle);
}

.btn-ghost {
  background: transparent;
  color: var(--fg);
  padding: 12px 16px;
}

.btn-ghost:hover {
  background: var(--surface-raised);
}

.btn-ghost:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: clamp(12px, 1vw, 14px);
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding: var(--space-md) 0;
  transition: background var(--duration-normal) var(--ease-out),
              backdrop-filter var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  background: oklch(99% 0.002 250 / 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.logo-accent {
  color: var(--accent);
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: clamp(13px, 1vw, 15px);
  font-weight: 400;
  color: var(--fg-secondary);
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-links a:hover {
  color: var(--fg);
}

.nav-cta {
  display: none;
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform var(--duration-normal) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100dvh;
  background: var(--surface);
  z-index: var(--z-mobile-menu);
  padding: 80px var(--space-xl) var(--space-xl);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
  box-shadow: -8px 0 32px oklch(0% 0 0 / 0.1);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu a {
  font-size: 18px;
  font-weight: 500;
  color: var(--fg);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--duration-fast) var(--ease-out);
}

.mobile-menu a:hover {
  color: var(--accent);
}

.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: oklch(0% 0 0 / 0.4);
  z-index: calc(var(--z-mobile-menu) - 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.mobile-menu-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

/* ---------- Hero ---------- */
.hero {
  min-height: clamp(500px, 70vh, 720px);
  display: flex;
  align-items: center;
  padding-top: 100px;
  padding-bottom: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: clamp(11px, 0.9vw, 12px);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-lg);
  padding: 6px 14px;
  background: var(--accent-subtle);
  border-radius: 999px;
}

.hero-label-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s var(--ease-out) infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  margin-bottom: var(--space-lg);
  max-width: 600px;
}

.hero-subtitle {
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--fg-secondary);
  max-width: 520px;
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
}

/* Hero Visual — Dashboard Composition */
.hero-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  display: none;
}

.hero-card {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: 0 4px 20px oklch(0% 0 0 / 0.05);
  transition: transform var(--duration-slow) var(--ease-out);
}

.hero-card-1 {
  top: 5%;
  right: 5%;
  width: 55%;
  animation: float-card 6s ease-in-out infinite;
}

.hero-card-2 {
  bottom: 15%;
  left: 0;
  width: 48%;
  animation: float-card 6s ease-in-out 1s infinite;
}

.hero-card-3 {
  top: 45%;
  right: 0;
  width: 42%;
  animation: float-card 6s ease-in-out 2s infinite;
}

@keyframes float-card {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.hero-card-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hero-card-icon svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

.hero-card-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--fg);
}

.hero-card-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.hero-card-line {
  height: 8px;
  border-radius: 4px;
  background: var(--surface-raised);
}

.hero-card-line-short {
  width: 60%;
}

.hero-card-line-accent {
  width: 40%;
  background: var(--accent-subtle);
}

.hero-card-row {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.hero-card-badge {
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
}

.hero-card-badge-green {
  background: oklch(62% 0.17 145 / 0.12);
  color: oklch(45% 0.12 145);
}

.hero-card-badge-blue {
  background: oklch(60% 0.12 240 / 0.12);
  color: oklch(45% 0.12 240);
}

.hero-card-badge-teal {
  background: var(--accent-subtle);
  color: oklch(45% 0.12 175);
}

/* ---------- Problem Section ---------- */
.problem {
  background: var(--surface-raised);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.problem-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.problem-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px oklch(0% 0 0 / 0.04);
}

.problem-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.problem-icon svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
}

.problem-card h4 {
  margin-bottom: var(--space-xs);
}

.problem-card p {
  font-size: clamp(13px, 1vw, 14px);
  color: var(--fg-tertiary);
}

.problem-transition {
  margin-top: var(--space-xl);
  text-align: center;
}

.problem-transition p {
  font-size: clamp(18px, 2.5vw, 24px);
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--fg);
}

/* ---------- Solutions Section ---------- */
.solutions-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.solution-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.solution-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-out);
}

.solution-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px oklch(0% 0 0 / 0.06);
  border-color: var(--border-strong);
}

.solution-card:hover::after {
  transform: scaleX(1);
}

.solution-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.solution-icon svg {
  width: 22px;
  height: 22px;
  color: var(--accent);
}

.solution-card h3 {
  font-size: clamp(16px, 1.5vw, 18px);
  margin-bottom: var(--space-sm);
}

.solution-card p {
  font-size: clamp(13px, 1vw, 14px);
  color: var(--fg-tertiary);
}

/* ---------- How It Works ---------- */
.process-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: var(--space-xl);
  position: relative;
}

.process-step {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
  padding: var(--space-lg) 0;
  position: relative;
}

.process-step:not(:last-child) {
  border-bottom: 1px solid var(--border);
}

.process-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-subtle);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

.process-step:not(:last-child) .process-number::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  width: 2px;
  height: calc(100% + var(--space-lg));
  background: var(--border);
  transform: translateX(-50%);
}

.process-content h3 {
  font-size: clamp(16px, 1.5vw, 18px);
  margin-bottom: var(--space-xs);
}

.process-content p {
  font-size: clamp(14px, 1.2vw, 15px);
  color: var(--fg-secondary);
}

/* ---------- Benefits ---------- */
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.benefit-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.benefit-card h4 {
  margin-bottom: var(--space-sm);
}

.benefit-card p {
  font-size: clamp(13px, 1vw, 14px);
  color: var(--fg-tertiary);
}

/* ---------- Integrations ---------- */
.integrations-visual {
  margin-top: var(--space-xl);
  display: flex;
  justify-content: center;
}

.integration-diagram {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1;
  position: relative;
}

.integration-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  z-index: 2;
}

.integration-node {
  position: absolute;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 500;
  color: var(--fg-secondary);
  text-align: center;
  z-index: 2;
}

.integration-node svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
}

.integration-line {
  position: absolute;
  top: 50%;
  left: 50%;
  height: 2px;
  background: var(--border);
  transform-origin: left center;
  z-index: 1;
}

.integration-node-1 { top: 5%; left: 50%; transform: translateX(-50%); }
.integration-node-2 { top: 50%; right: 5%; transform: translateY(-50%); }
.integration-node-3 { bottom: 5%; left: 50%; transform: translateX(-50%); }
.integration-node-4 { top: 50%; left: 5%; transform: translateY(-50%); }

/* ---------- Sites Comparison ---------- */
.comparison {
  background: var(--surface-raised);
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  align-items: center;
}

.comparison-card {
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  position: relative;
}

.comparison-card-generic {
  background: var(--surface);
  border: 2px solid var(--border);
  opacity: 0.7;
}

.comparison-card-generic::before {
  content: 'Genérico';
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-tertiary);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
}

.comparison-card-worklize {
  background: var(--surface);
  border: 2px solid var(--accent);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.comparison-card-worklize::before {
  content: 'Worklize';
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-subtle);
}

.comparison-mock {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.comparison-mock-nav {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.comparison-mock-logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
}

.comparison-mock-links {
  display: flex;
  gap: var(--space-md);
}

.comparison-mock-link {
  width: 40px;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
}

.comparison-mock-hero {
  padding: var(--space-lg) 0;
}

.comparison-mock-headline {
  height: 16px;
  border-radius: 4px;
  background: var(--border);
  margin-bottom: var(--space-sm);
}

.comparison-mock-sub {
  height: 8px;
  border-radius: 4px;
  background: var(--border);
  width: 70%;
  margin-bottom: var(--space-md);
}

.comparison-mock-btn {
  width: 120px;
  height: 32px;
  border-radius: var(--radius-md);
}

.comparison-card-generic .comparison-mock-btn {
  background: #6366f1;
}

.comparison-card-worklize .comparison-mock-btn {
  background: var(--accent);
}

.comparison-caption {
  text-align: center;
  margin-top: var(--space-lg);
}

.comparison-caption p {
  font-size: clamp(15px, 1.5vw, 17px);
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--fg);
}

.comparison-caption span {
  color: var(--accent);
}

/* ---------- Differentials ---------- */
.diffs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.diff-card {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  padding: var(--space-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.diff-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.diff-icon svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
}

.diff-card h4 {
  margin-bottom: var(--space-xs);
  font-size: clamp(15px, 1.3vw, 17px);
}

.diff-card p {
  font-size: clamp(13px, 1vw, 14px);
  color: var(--fg-tertiary);
}

/* ---------- FAQ ---------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: var(--space-xl);
  max-width: 720px;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) 0;
  font-size: clamp(15px, 1.3vw, 17px);
  font-weight: 500;
  color: var(--fg);
  text-align: left;
  cursor: pointer;
  background: none;
  border: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.faq-trigger:hover {
  color: var(--accent);
}

.faq-trigger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform var(--duration-normal) var(--ease-out);
  color: var(--fg-tertiary);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-out);
}

.faq-answer-inner {
  padding-bottom: var(--space-lg);
  color: var(--fg-secondary);
  line-height: 1.65;
  font-size: clamp(14px, 1.2vw, 16px);
}

/* ---------- CTA Final ---------- */
.cta-final {
  background: var(--surface-dark);
  color: var(--fg-inverse);
}

.cta-final .section-label {
  color: var(--accent);
}

.cta-final h2 {
  color: var(--fg-inverse);
  margin-bottom: var(--space-md);
}

.cta-final p {
  color: oklch(70% 0.01 260);
  font-size: clamp(16px, 1.5vw, 18px);
  max-width: 480px;
  margin-bottom: var(--space-xl);
}

.cta-final .btn-primary {
  background: var(--accent);
  color: var(--bg);
}

.cta-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  color: oklch(70% 0.01 260);
  font-size: clamp(13px, 1vw, 14px);
  transition: color var(--duration-fast) var(--ease-out);
}

.cta-whatsapp:hover {
  color: var(--accent);
}

.cta-whatsapp svg {
  width: 18px;
  height: 18px;
}

/* ---------- Contact Form ---------- */
.contact-form {
  max-width: 480px;
  margin-top: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: clamp(13px, 1vw, 14px);
  font-weight: 500;
  color: var(--fg);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  font-size: clamp(14px, 1.2vw, 16px);
  color: var(--fg);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23626262' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 6l3.5 3.5L11.5 6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 40px;
}

/* ---------- Footer ---------- */
.footer {
  padding: var(--space-2xl) 0 var(--space-xl);
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand .logo {
  margin-bottom: var(--space-md);
}

.footer-brand p {
  font-size: clamp(13px, 1vw, 14px);
  color: var(--fg-tertiary);
  max-width: 280px;
}

.footer-col h4 {
  font-size: clamp(13px, 1vw, 14px);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-tertiary);
  margin-bottom: var(--space-md);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-col a {
  font-size: clamp(14px, 1.2vw, 15px);
  color: var(--fg-secondary);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
}

.footer-bottom p {
  font-size: clamp(12px, 0.9vw, 13px);
  color: var(--fg-tertiary);
}

/* ---------- WhatsApp Float ---------- */
.whatsapp-float {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-whatsapp);
  box-shadow: 0 4px 16px var(--accent-glow);
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.whatsapp-float:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px oklch(62% 0.17 175 / 0.3);
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
}

/* ---------- Scroll Reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

[data-reveal].visible {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal="delay-1"] { transition-delay: 80ms; }
[data-reveal="delay-2"] { transition-delay: 160ms; }
[data-reveal="delay-3"] { transition-delay: 240ms; }
[data-reveal="delay-4"] { transition-delay: 320ms; }
[data-reveal="delay-5"] { transition-delay: 400ms; }
[data-reveal="delay-6"] { transition-delay: 480ms; }

/* ---------- Responsive: Tablet (≥640px) ---------- */
@media (min-width: 640px) {
  .problem-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

  .process-step {
    gap: var(--space-xl);
  }
}

/* ---------- Responsive: Desktop (≥1024px) ---------- */
@media (min-width: 1024px) {
  .nav-links {
    display: flex;
  }

  .nav-cta {
    display: inline-flex;
  }

  .hamburger {
    display: none;
  }

  .hero-inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }

  .hero-visual {
    display: block;
  }

  .problem-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .solutions-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .solutions-grid .solution-card:last-child {
    grid-column: 2;
  }

  .benefits-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .diffs-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .comparison-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* ---------- Responsive: Large Desktop (≥1440px) ---------- */
@media (min-width: 1440px) {
  .hero {
    min-height: 720px;
  }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .hero-card {
    animation: none;
  }

  .hero-label-dot {
    animation: none;
  }
}

/* ---------- Focus Visible ---------- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Selection ---------- */
::selection {
  background: var(--accent-subtle);
  color: var(--fg);
}