/* ==========================================
   SmileStack Design Tokens & Styles
   ========================================== */

:root {
  /* Type Scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Arial', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
}

/* ==========================================
   Light Mode (Default)
   ========================================== */
:root,
[data-theme='light'] {
  --color-bg: #f8fafb;
  --color-surface: #ffffff;
  --color-surface-2: #f1f5f5;
  --color-surface-offset: #e8efef;
  --color-surface-dark: #0f1a1d;
  --color-divider: #d1dfe0;
  --color-border: #c4d4d5;

  --color-text: #0f1a1d;
  --color-text-muted: #5a7074;
  --color-text-faint: #94adb0;
  --color-text-inverse: #f8fafb;

  --color-primary: #14b8a6;
  --color-primary-hover: #0d9488;
  --color-primary-active: #0a7c71;
  --color-primary-light: #ccfbf1;

  --color-accent-dark: #042f2e;

  --shadow-sm: 0 1px 2px rgba(15, 26, 29, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 26, 29, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 26, 29, 0.12);
}

/* ==========================================
   Dark Mode
   ========================================== */
[data-theme='dark'] {
  --color-bg: #0c1214;
  --color-surface: #131c1f;
  --color-surface-2: #1a2528;
  --color-surface-offset: #172022;
  --color-surface-dark: #0a0f11;
  --color-divider: #243033;
  --color-border: #2d3b3e;

  --color-text: #d8e8ea;
  --color-text-muted: #8aa4a7;
  --color-text-faint: #5a7578;
  --color-text-inverse: #0c1214;

  --color-primary: #2dd4bf;
  --color-primary-hover: #5eead4;
  --color-primary-active: #14b8a6;
  --color-primary-light: #042f2e;

  --color-accent-dark: #042f2e;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0c1214;
    --color-surface: #131c1f;
    --color-surface-2: #1a2528;
    --color-surface-offset: #172022;
    --color-surface-dark: #0a0f11;
    --color-divider: #243033;
    --color-border: #2d3b3e;
    --color-text: #d8e8ea;
    --color-text-muted: #8aa4a7;
    --color-text-faint: #5a7578;
    --color-text-inverse: #0c1214;
    --color-primary: #2dd4bf;
    --color-primary-hover: #5eead4;
    --color-primary-active: #14b8a6;
    --color-primary-light: #042f2e;
    --color-accent-dark: #042f2e;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  }
}

/* ==========================================
   Layout
   ========================================== */
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

.section {
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

.section-dark {
  background: var(--color-surface-dark);
  color: var(--color-text-inverse);
}

[data-theme='dark'] .section-dark {
  background: var(--color-surface-offset);
  color: var(--color-text);
}

/* ==========================================
   Navigation
   ========================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.08);
  transition: background 300ms var(--ease-out), box-shadow 300ms var(--ease-out);
}

.nav.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .nav-inner {
    padding-inline: var(--space-8);
  }
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
}

.nav-logo svg {
  width: 36px;
  height: 36px;
}

.nav-logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
}

.nav-links {
  display: none;
  list-style: none;
  gap: var(--space-6);
  align-items: center;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color var(--transition-interactive);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.nav-cta-btn {
  display: none !important;
}

@media (min-width: 768px) {
  .nav-cta-btn.show {
    display: inline-flex !important;
  }
}

.mobile-menu-toggle {
  display: flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: var(--color-bg);
  padding: var(--space-24) var(--space-6) var(--space-8);
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-size: var(--text-lg);
  font-weight: 500;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-body);
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  border: none;
  line-height: 1.4;
  min-height: 44px;
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-2);
  border-color: var(--color-text-muted);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
}

.btn-ghost:hover {
  background: var(--color-primary-light);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
  min-height: 52px;
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  min-height: 36px;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--space-24);
  padding-bottom: var(--space-16);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.12;
}

[data-theme='dark'] .hero-bg img {
  opacity: 0.06;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, var(--color-bg) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  letter-spacing: 0.02em;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse-dot 2s ease-in-out infinite;
}

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

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

.hero h1 span {
  color: var(--color-primary);
}

.hero-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
}

.hero-stat-value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.hero-stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* ==========================================
   Problem Section
   ========================================== */
.problem-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.problem-card {
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.problem-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #e57373;
  opacity: 0.85;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.problem-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================
   Comparison Section
   ========================================== */
.comparison {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-10);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

@media (min-width: 640px) {
  .comparison {
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }
}

.comparison-col {
  padding: var(--space-6) var(--space-8);
}

.comparison-before {
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-xl);
}

@media (min-width: 640px) {
  .comparison-before {
    border-radius: var(--radius-xl) 0 0 var(--radius-xl);
    border-right: none;
  }
}

.comparison-after {
  background: var(--color-primary-light);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-xl);
}

@media (min-width: 640px) {
  .comparison-after {
    border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
  }
}

.comparison-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}

.comparison-before .comparison-header {
  color: #e57373;
}

.comparison-before .comparison-header svg {
  color: #e57373;
}

.comparison-after .comparison-header {
  color: var(--color-primary);
}

.comparison-after .comparison-header svg {
  color: var(--color-primary);
}

.comparison-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.comparison-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-4);
  position: relative;
  line-height: 1.5;
}

.comparison-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.comparison-before .comparison-list li::before {
  background: #e57373;
  opacity: 0.6;
}

.comparison-after .comparison-list li {
  color: var(--color-text);
  font-weight: 500;
}

.comparison-after .comparison-list li::before {
  background: var(--color-primary);
}

/* ==========================================
   Section Headers
   ========================================== */
.section-header {
  margin-bottom: var(--space-10);
}

.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.section-header p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 600px;
}

.section-dark .section-header p {
  color: rgba(255, 255, 255, 0.65);
}

[data-theme='dark'] .section-dark .section-header p {
  color: var(--color-text-muted);
}

/* ==========================================
   How It Works
   ========================================== */
.steps {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
  }
}

.step {
  position: relative;
  padding: var(--space-8) var(--space-6);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
}

[data-theme='dark'] .step {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--color-border);
}

.step-number {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
  opacity: 0.25;
  line-height: 1;
  margin-bottom: var(--space-4);
}

.step h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.section-dark .step p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-sm);
  line-height: 1.7;
}

[data-theme='dark'] .section-dark .step p {
  color: var(--color-text-muted);
}

/* Agent diagram */
.agent-diagram {
  margin-top: var(--space-12);
  padding: var(--space-8);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
}

[data-theme='dark'] .agent-diagram {
  background: rgba(255, 255, 255, 0.02);
  border-color: var(--color-border);
}

.agent-ceo {
  text-align: center;
  margin-bottom: var(--space-6);
}

.agent-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
}

.agent-line {
  width: 1px;
  height: 32px;
  background: rgba(255, 255, 255, 0.15);
  margin: var(--space-3) auto;
}

[data-theme='dark'] .agent-line {
  background: var(--color-border);
}

.agent-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

@media (min-width: 768px) {
  .agent-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .agent-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.agent-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-2);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  text-align: center;
}

[data-theme='dark'] .agent-node {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--color-border);
}

.agent-node-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.agent-node-label {
  font-size: var(--text-xs);
  font-weight: 600;
  opacity: 0.85;
}

/* ==========================================
   Automate Cards
   ========================================== */
.automate-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

@media (min-width: 640px) {
  .automate-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .automate-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.automate-card {
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive);
}

.automate-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.automate-card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
}

.automate-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.automate-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ==========================================
   Pricing
   ========================================== */
.pricing-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-10);
  align-items: start;
}

@media (min-width: 768px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pricing-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
}

.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-lg);
}

.pricing-popular {
  position: absolute;
  top: calc(-1 * var(--space-3));
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 700;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.pricing-tier {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.pricing-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  margin-bottom: var(--space-4);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
}

.pricing-amount {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
}

.pricing-period {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
  margin-bottom: var(--space-8);
}

.pricing-features li {
  display: flex;
  gap: var(--space-3);
  font-size: var(--text-sm);
  align-items: flex-start;
  line-height: 1.5;
}

.pricing-features li svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  color: var(--color-primary);
  margin-top: 2px;
}

/* ==========================================
   Social Proof
   ========================================== */
.proof-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

@media (min-width: 640px) {
  .proof-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .proof-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.proof-stat {
  text-align: center;
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-xl);
}

.proof-stat-before {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  text-decoration: line-through;
  margin-bottom: var(--space-2);
}

.proof-stat-after {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.proof-stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ==========================================
   Free Tools
   ========================================== */
.tools-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.tool-card {
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.tool-card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-5);
}

.tool-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.tool-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
  flex: 1;
}

/* ==========================================
   FAQ
   ========================================== */
.faq-list {
  max-width: 720px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  font-family: var(--font-body);
  text-align: left;
  color: var(--color-text);
  cursor: pointer;
  min-height: 44px;
  transition: background var(--transition-interactive);
}

.faq-question:hover {
  background: var(--color-surface-2);
}

.faq-question svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  transition: transform 300ms var(--ease-out);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 400ms var(--ease-out), padding 400ms var(--ease-out);
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 var(--space-6) var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ==========================================
   CTA Section
   ========================================== */
.cta-section {
  text-align: center;
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  background: linear-gradient(135deg, var(--color-primary) 0%, #0d9488 100%);
  color: #ffffff;
}

.cta-section h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.cta-section p {
  opacity: 0.85;
  max-width: 500px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.cta-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
}

@media (min-width: 640px) {
  .cta-form {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .cta-form input:first-child,
  .cta-form input:nth-child(2) {
    flex: 1;
    min-width: 180px;
  }
  .cta-form input:nth-child(3) {
    flex: 0.7;
    min-width: 140px;
  }
}

.cta-form input {
  padding: var(--space-3) var(--space-4);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: var(--text-sm);
  min-height: 44px;
  backdrop-filter: blur(4px);
}

.cta-form input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.cta-form input:focus {
  outline: none;
  border-color: #fff;
  background: rgba(255, 255, 255, 0.2);
}

.btn-white {
  background: #ffffff;
  color: var(--color-primary);
  font-weight: 700;
  width: 100%;
}

.btn-white:hover {
  background: #f0fdfa;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-divider);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer-links {
  display: flex;
  gap: var(--space-4);
  list-style: none;
}

.footer-links a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer-links a:hover {
  color: var(--color-text);
}

/* ==========================================
   Scroll Animations
   ========================================== */
.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 100%;
  }
}

@keyframes reveal-fade {
  to {
    opacity: 1;
  }
}

/* Fallback for browsers without scroll-timeline */
@supports not (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    transition: opacity 0.6s var(--ease-out);
  }
  .fade-in.visible {
    opacity: 1;
  }
}

/* ==========================================
   Skip Link
   ========================================== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  z-index: 200;
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space-4);
}