/* ========================================
   MCP Voice Service — Design System
   ======================================== */

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

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }

::selection {
  background: oklch(from var(--color-accent) l c h / 0.25);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@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;
  }
}

button { cursor: pointer; background: none; border: none; }
a { color: inherit; text-decoration: none; }

a, button, [role="button"], [role="link"], input, textarea, select {
  transition: color 180ms cubic-bezier(0.16, 1, 0.3, 1),
              background 180ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 180ms cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 180ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 180ms cubic-bezier(0.16, 1, 0.3, 1),
              opacity 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

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


/* === DESIGN TOKENS === */
: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);

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

  /* Fonts */
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;
  --font-display: 'General Sans', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}


/* === DARK MODE (DEFAULT) === */
:root, [data-theme="dark"] {
  --color-bg:             #0A0F1C;
  --color-surface:        #0F1629;
  --color-surface-2:      #141B30;
  --color-surface-offset: #111827;
  --color-surface-dynamic: #1A2340;
  --color-divider:        #1E2A45;
  --color-border:         #243151;

  --color-text:           #E2E8F0;
  --color-text-muted:     #8B96AD;
  --color-text-faint:     #4A5568;
  --color-text-inverse:   #0A0F1C;

  --color-accent:         #00D4FF;
  --color-accent-hover:   #00B8E0;
  --color-accent-active:  #009BC0;
  --color-accent-muted:   rgba(0, 212, 255, 0.12);
  --color-accent-glow:    rgba(0, 212, 255, 0.15);

  --color-success:        #34D399;
  --color-warning:        #FBBF24;
  --color-error:          #F87171;

  --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);
}

/* === LIGHT MODE === */
[data-theme="light"] {
  --color-bg:             #F8FAFC;
  --color-surface:        #FFFFFF;
  --color-surface-2:      #F1F5F9;
  --color-surface-offset: #E2E8F0;
  --color-surface-dynamic: #CBD5E1;
  --color-divider:        #E2E8F0;
  --color-border:         #CBD5E1;

  --color-text:           #0F172A;
  --color-text-muted:     #64748B;
  --color-text-faint:     #94A3B8;
  --color-text-inverse:   #F8FAFC;

  --color-accent:         #0091B2;
  --color-accent-hover:   #007A96;
  --color-accent-active:  #00657D;
  --color-accent-muted:   rgba(0, 145, 178, 0.08);
  --color-accent-glow:    rgba(0, 145, 178, 0.1);

  --color-success:        #059669;
  --color-warning:        #D97706;
  --color-error:          #DC2626;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-bg:             #F8FAFC;
    --color-surface:        #FFFFFF;
    --color-surface-2:      #F1F5F9;
    --color-surface-offset: #E2E8F0;
    --color-surface-dynamic: #CBD5E1;
    --color-divider:        #E2E8F0;
    --color-border:         #CBD5E1;
    --color-text:           #0F172A;
    --color-text-muted:     #64748B;
    --color-text-faint:     #94A3B8;
    --color-text-inverse:   #F8FAFC;
    --color-accent:         #0091B2;
    --color-accent-hover:   #007A96;
    --color-accent-active:  #00657D;
    --color-accent-muted:   rgba(0, 145, 178, 0.08);
    --color-accent-glow:    rgba(0, 145, 178, 0.1);
    --color-success:        #059669;
    --color-warning:        #D97706;
    --color-error:          #DC2626;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
  }
}


/* === LAYOUT === */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
}

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

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


/* === HEADER / NAV === */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 15, 28, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] .header {
  background: rgba(248, 250, 252, 0.85);
}

.header--hidden {
  transform: translateY(-100%);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
}

.nav-logo svg {
  flex-shrink: 0;
}

.nav-brand {
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: var(--space-8);
}

.nav-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 450;
  letter-spacing: -0.01em;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-accent-muted);
}

.mobile-menu-toggle {
  display: none;
  color: var(--color-text-muted);
  padding: var(--space-2);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: var(--space-4) var(--space-6) var(--space-6);
  border-top: 1px solid var(--color-divider);
}

.mobile-nav a {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-divider);
}

.mobile-nav a:last-child {
  border-bottom: none;
}

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-actions .btn {
    display: none;
  }
  .nav-actions {
    margin-left: auto;
    margin-right: var(--space-2);
  }
  .mobile-menu-toggle {
    display: flex;
  }
}


/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

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

.btn-ghost:hover:not(:disabled) {
  background: var(--color-accent-muted);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-sm {
  padding: var(--space-1) var(--space-4);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--space-3) var(--space-8);
  font-size: var(--text-sm);
  border-radius: var(--radius-lg);
}

.btn-block {
  display: flex;
  width: 100%;
}


/* === BADGE === */
.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-accent-muted);
  color: var(--color-accent);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

[data-theme="light"] .badge {
  border-color: rgba(0, 145, 178, 0.2);
}

.badge-sm {
  font-size: 0.65rem;
  padding: 2px var(--space-2);
  vertical-align: middle;
  margin-left: var(--space-2);
}


/* === HERO === */
.hero {
  position: relative;
  padding-top: clamp(var(--space-16), 10vw, var(--space-32));
  padding-bottom: clamp(var(--space-12), 8vw, var(--space-24));
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 70%);
}

[data-theme="light"] .hero-bg-grid {
  background-image:
    linear-gradient(rgba(0, 145, 178, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 145, 178, 0.06) 1px, transparent 1px);
}

.hero-content {
  position: relative;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge {
  margin-bottom: var(--space-6);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
  position: relative;
}

.hero-title::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 200px;
  background: radial-gradient(ellipse, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

[data-theme="light"] .hero-title::after {
  background: radial-gradient(ellipse, rgba(0, 145, 178, 0.06) 0%, transparent 70%);
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-accent), #6366F1, #A855F7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: clamp(var(--space-10), 4vw, var(--space-16));
}

.hero-terminal {
  width: 100%;
  max-width: 680px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(0, 212, 255, 0.05);
  text-align: left;
}

[data-theme="light"] .hero-terminal {
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0, 145, 178, 0.08);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-offset);
  border-bottom: 1px solid var(--color-divider);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-left: var(--space-4);
}

.terminal-body {
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-mono);
  font-size: clamp(0.75rem, 0.65rem + 0.5vw, 0.875rem);
  line-height: 1.8;
  overflow-x: auto;
}

.terminal-body code {
  white-space: pre;
}

.t-prompt { color: var(--color-success); }
.t-cmd { color: var(--color-text); font-weight: 600; }
.t-flag { color: var(--color-accent); }
.t-string { color: #FBBF24; }

[data-theme="light"] .t-string { color: #B45309; }
[data-theme="light"] .t-cmd { color: var(--color-text); }


/* === SECTION HEADERS === */
.section-header {
  text-align: center;
  margin-bottom: clamp(var(--space-10), 4vw, var(--space-16));
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-inline: auto;
}


/* === HOW IT WORKS / STEPS === */
.steps-grid {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}

.step-card {
  flex: 1;
  max-width: 320px;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  text-align: center;
  position: relative;
}

.step-card:hover {
  border-color: var(--color-border);
  background: var(--color-surface-2);
}

.step-number {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-4);
  letter-spacing: 0.1em;
}

.step-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--color-accent-muted);
  margin: 0 auto var(--space-5);
}

.step-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

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

.step-connector {
  display: flex;
  align-items: center;
  padding-top: var(--space-16);
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .steps-grid {
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
  }
  .step-card {
    max-width: 100%;
  }
  .step-connector {
    padding-top: 0;
    transform: rotate(90deg);
  }
}


/* === CODE BLOCKS === */
.code-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.code-block {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

[data-theme="light"] .code-block {
  background: var(--color-surface-2);
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface-offset);
}

.code-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text);
}

.code-method {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  font-weight: 500;
}

.code-status {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-success);
  font-weight: 500;
}

.code-content {
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-mono);
  font-size: clamp(0.7rem, 0.6rem + 0.5vw, 0.825rem);
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre;
  color: var(--color-text);
}

/* Syntax highlighting */
.c-comment { color: var(--color-text-faint); font-style: italic; }
.c-key     { color: #7DD3FC; }
.c-string  { color: #86EFAC; }
.c-number  { color: #FCA5A5; }
.c-bool    { color: #C084FC; }

[data-theme="light"] .c-key     { color: #0369A1; }
[data-theme="light"] .c-string  { color: #15803D; }
[data-theme="light"] .c-number  { color: #DC2626; }
[data-theme="light"] .c-bool    { color: #7C3AED; }
[data-theme="light"] .c-comment { color: var(--color-text-faint); }

.code-footer {
  text-align: center;
  margin-top: var(--space-8);
}

.code-note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.code-note code {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  background: var(--color-accent-muted);
  color: var(--color-accent);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
}

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


/* === FEATURES === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.feature-card {
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-divider);
  background: var(--color-surface);
  transition: border-color var(--transition-interactive), background var(--transition-interactive);
}

.feature-card:hover {
  border-color: var(--color-border);
  background: var(--color-surface-2);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: var(--color-accent-muted);
  margin-bottom: var(--space-5);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-icon--coming {
  opacity: 0.5;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

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

@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}


/* === PRICING === */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.pricing-card {
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-divider);
  background: var(--color-bg);
  position: relative;
}

[data-theme="light"] .pricing-card {
  background: var(--color-surface);
}

.pricing-card--featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.08);
}

[data-theme="light"] .pricing-card--featured {
  box-shadow: 0 0 40px rgba(0, 145, 178, 0.08);
}

.pricing-popular {
  position: absolute;
  top: calc(-1 * var(--space-3));
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-inverse);
  background: var(--color-accent);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-tier {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}

.pricing-amount {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.03em;
}

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

.pricing-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.pricing-features li svg {
  flex-shrink: 0;
  display: inline;
}

@media (max-width: 900px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin-inline: auto;
  }
}


/* === USE CASES === */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.usecase-card {
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-divider);
  background: var(--color-surface);
  transition: border-color var(--transition-interactive);
}

.usecase-card--live {
  border-color: rgba(0, 212, 255, 0.3);
}

[data-theme="light"] .usecase-card--live {
  border-color: rgba(0, 145, 178, 0.3);
}

.usecase-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-faint);
}

.status-dot--live {
  background: var(--color-success);
  box-shadow: 0 0 8px rgba(52, 211, 153, 0.5);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.usecase-icon {
  margin-bottom: var(--space-5);
}

.usecase-icon svg {
  width: 40px;
  height: 40px;
}

.usecase-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

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

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


/* === FOOTER === */
.footer {
  padding-block: var(--space-16) var(--space-8);
  border-top: 1px solid var(--color-divider);
  background: var(--color-surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: var(--space-8);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.footer-logo svg {
  flex-shrink: 0;
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.footer-tagline strong {
  color: var(--color-text);
}

.footer-links h4 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.footer-links a {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-block: var(--space-1);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

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

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

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

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}


/* === SCROLL ANIMATIONS === */
.animate-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}