/* ==========================================================================
   MirrorType — design tokens
   ========================================================================== */

:root {
  color-scheme: light dark;

  --font-main:
    -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Inter,
    system-ui, "Helvetica Neue", sans-serif;

  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4.5rem;

  --radius-xs: 0.375rem;
  --radius-sm: 0.625rem;
  --radius-md: 1rem;
  --radius-lg: 1.375rem;
  --radius-xl: 2rem;

  --max-width: 70rem;
  --duration: 160ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  /* Light (white + blue) is the default so the page still renders correctly
     for clients that match neither prefers-color-scheme query. */
  --bg: #ffffff;
  --bg-soft: #f5f8ff;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --text: #0b1220;
  --muted: #576179;
  --border: #e4eaf5;
  --border-strong: #d3ddef;
  --accent: #0a5cff;
  --accent-strong: #0043c9;
  --accent-soft: #ecf2ff;
  --accent-contrast: #ffffff;
  --focus: #0a5cff;
  --header-bg: rgba(255, 255, 255, 0.82);
  --field-bg: #f8faff;
  --glow: rgba(10, 92, 255, 0.14);
  --shadow-sm: 0 1px 2px rgba(11, 22, 60, 0.05);
  --shadow-md: 0 1px 2px rgba(11, 22, 60, 0.05), 0 10px 28px -14px rgba(11, 22, 60, 0.28);
  --shadow-lg: 0 2px 4px rgba(11, 22, 60, 0.05), 0 32px 64px -28px rgba(11, 22, 60, 0.38);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #060a14;
    --bg-soft: #0b1120;
    --surface: #0f1728;
    --surface-raised: #131d31;
    --text: #eef3fc;
    --muted: #94a3bd;
    --border: rgba(148, 173, 224, 0.16);
    --border-strong: rgba(148, 173, 224, 0.28);
    --accent: #4d8dff;
    --accent-strong: #85b1ff;
    --accent-soft: rgba(77, 141, 255, 0.14);
    --accent-contrast: #041027;
    --focus: #85b1ff;
    --header-bg: rgba(9, 14, 26, 0.78);
    --field-bg: #0b1322;
    --glow: rgba(77, 141, 255, 0.22);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 1px 2px rgba(0, 0, 0, 0.5), 0 10px 28px -14px rgba(0, 0, 0, 0.7);
    --shadow-lg: 0 2px 4px rgba(0, 0, 0, 0.5), 0 32px 64px -28px rgba(0, 0, 0, 0.85);
  }
}

/* ==========================================================================
   Base
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-main);
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: -0.028em;
  font-weight: 700;
}

h1 {
  font-size: clamp(2.35rem, 5.6vw, 3.9rem);
}

h2 {
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
}

h3 {
  font-size: 1.0625rem;
  letter-spacing: -0.012em;
}

p {
  margin: 0;
}

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

.container {
  width: min(100% - 2.5rem, var(--max-width));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-3);
  background: var(--text);
  color: var(--bg);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-weight: 600;
  z-index: 30;
}

.skip-link:focus-visible {
  top: var(--space-3);
}

a:focus-visible,
button:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid transparent;
  background: var(--header-bg);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  transition: border-color var(--duration) var(--ease);
}

.site-header::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: -1px;
  height: 1px;
  background: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4rem;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 650;
  font-size: 1.0625rem;
  letter-spacing: -0.015em;
}

.brand img {
  border-radius: 0.5rem;
  width: 32px;
  height: 32px;
  box-shadow: var(--shadow-sm);
}

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

.nav-list {
  list-style: none;
  display: none;
  align-items: center;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
}

.nav-list a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 550;
  font-size: 0.9375rem;
  transition: color var(--duration) var(--ease);
}

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

.header-cta {
  flex: none;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9688rem;
  letter-spacing: -0.008em;
  border: 1px solid transparent;
  padding: 0.8125rem 1.25rem;
  cursor: pointer;
  font-family: inherit;
  transition:
    background-color var(--duration) var(--ease),
    color var(--duration) var(--ease),
    border-color var(--duration) var(--ease),
    box-shadow var(--duration) var(--ease),
    transform var(--duration) var(--ease);
}

.button-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  box-shadow: var(--shadow-md);
}

.button-primary:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
}

.button-primary:active {
  transform: translateY(0);
}

.button-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.button-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.button-small {
  padding: 0.5rem 0.875rem;
  font-size: 0.875rem;
  border-radius: var(--radius-xs);
}

/* ==========================================================================
   Section scaffolding
   ========================================================================== */

.features,
.preview {
  padding-block: clamp(3.5rem, 8vw, var(--space-7));
}

.cta {
  padding-block: clamp(2.5rem, 5vw, 3.5rem) clamp(3.5rem, 8vw, var(--space-7));
}

.section-head {
  max-width: 40rem;
}

.eyebrow {
  margin-bottom: var(--space-2);
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-copy {
  margin-top: var(--space-3);
  color: var(--muted);
  font-size: 1.0625rem;
  max-width: 34rem;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(3rem, 7vw, 5.5rem) clamp(3.5rem, 8vw, 5.5rem);
  border-bottom: 1px solid var(--border);
}

.hero::before {
  content: "";
  position: absolute;
  top: -30%;
  left: 50%;
  width: min(60rem, 130%);
  aspect-ratio: 1;
  transform: translateX(-50%);
  background: radial-gradient(circle, var(--glow) 0%, transparent 62%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  gap: clamp(2.5rem, 6vw, 4rem);
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem 0.375rem 0.5rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.badge-dot {
  width: 0.4375rem;
  height: 0.4375rem;
  border-radius: 50%;
  background: var(--accent);
}

.hero h1 {
  margin-top: var(--space-4);
  max-width: 15ch;
}

.hero-copy {
  margin-top: var(--space-4);
  max-width: 34rem;
  color: var(--muted);
  font-size: clamp(1.0625rem, 1.6vw, 1.1875rem);
}

.hero-actions {
  margin-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.hero-meta {
  margin-top: var(--space-4);
  color: var(--muted);
  font-size: 0.875rem;
}

/* --- Device mockup ------------------------------------------------------ */

.hero-visual {
  display: flex;
  justify-content: center;
}

.device {
  width: min(19rem, 82vw);
  padding: 0.5rem;
  border-radius: var(--radius-xl);
  background: linear-gradient(160deg, #1b2436, #0a1020);
  box-shadow: var(--shadow-lg);
}

.device-screen {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-3) 0.625rem 0.625rem;
  border-radius: 1.625rem;
  background: var(--bg-soft);
  aspect-ratio: 9 / 15.5;
  overflow: hidden;
}

.mock-bar {
  display: flex;
  align-items: center;
  gap: 0.4375rem;
  padding: 0 0.25rem 0.625rem;
  border-bottom: 1px solid var(--border);
}

.mock-avatar {
  display: grid;
  place-items: center;
  width: 1.375rem;
  height: 1.375rem;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.625rem;
  font-weight: 700;
}

.mock-title {
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 600;
}

.chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.5rem;
  padding-inline: 0.25rem;
}

.bubble {
  max-width: 82%;
  padding: 0.5rem 0.75rem;
  border-radius: 1.125rem;
  font-size: 0.8125rem;
  line-height: 1.35;
}

.bubble-in {
  align-self: flex-start;
  border-bottom-left-radius: 0.375rem;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}

.bubble-out {
  align-self: flex-end;
  border-bottom-right-radius: 0.375rem;
  background: var(--accent);
  color: var(--accent-contrast);
  font-size: 0.9375rem;
}

.mock-keyboard {
  display: grid;
  gap: 0.3125rem;
  padding: 0.4375rem 0.3125rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
}

.mock-toolbar {
  display: flex;
  gap: 0.25rem;
  padding-bottom: 0.25rem;
}

.mock-chip {
  padding: 0.1875rem 0.4375rem;
  border-radius: 999px;
  background: var(--field-bg);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.5625rem;
  font-weight: 600;
}

.mock-chip.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.mock-row {
  display: flex;
  justify-content: center;
  gap: 0.1875rem;
}

.mock-key {
  flex: 1;
  min-width: 0;
  height: 1.5rem;
  display: grid;
  place-items: center;
  border-radius: 0.3125rem;
  background: var(--field-bg);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.625rem;
  font-weight: 500;
  box-shadow: var(--shadow-sm);
}

.mock-key-wide {
  flex: 1.6;
}

.mock-key-space {
  flex: 5;
}

/* ==========================================================================
   Features
   ========================================================================== */

.features {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
}

.feature-grid {
  margin-top: var(--space-5);
  display: grid;
  gap: var(--space-3);
}

.card {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition:
    border-color var(--duration) var(--ease),
    box-shadow var(--duration) var(--ease),
    transform var(--duration) var(--ease);
}

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

.card-icon {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  margin-bottom: var(--space-3);
  border-radius: var(--radius-xs);
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 1.0625rem;
  font-weight: 700;
}

.card p {
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

/* ==========================================================================
   Live preview
   ========================================================================== */

.preview-panel {
  margin-top: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.preview-grid {
  display: grid;
}

.preview-pane {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
}

.preview-pane + .preview-pane {
  border-top: 1px solid var(--border);
  background: var(--field-bg);
}

.pane-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  min-height: 2rem;
}

label {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

textarea {
  width: 100%;
  flex: 1;
  min-height: 7.5rem;
  resize: vertical;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  padding: var(--space-3);
  font: inherit;
  font-size: 1rem;
  transition:
    border-color var(--duration) var(--ease),
    box-shadow var(--duration) var(--ease);
}

textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

output {
  display: block;
  width: 100%;
  flex: 1;
  min-height: 7.5rem;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--border-strong);
  background: var(--bg);
  color: var(--accent-strong);
  padding: var(--space-3);
  font-size: 1.0625rem;
  word-break: break-word;
}

output:empty::before {
  content: attr(data-placeholder);
  color: var(--muted);
}

.copy-button {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--muted);
}

.copy-button:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.copy-button[data-copied="true"] {
  color: var(--accent);
  border-color: var(--accent);
}

/* ==========================================================================
   Closing CTA
   ========================================================================== */

.cta-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-4);
  padding: clamp(2rem, 5vw, 3.25rem);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #ffffff;
  box-shadow: var(--shadow-lg);
}

.cta-inner h2 {
  max-width: 22ch;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.82);
  max-width: 38rem;
}

.cta-inner .button {
  background: #ffffff;
  color: #0a3fb0;
  box-shadow: none;
}

.cta-inner .button:hover {
  background: #eef3ff;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--border);
  padding-block: var(--space-5);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 550;
}

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

.site-footer p {
  color: var(--muted);
  font-size: 0.875rem;
}

/* ==========================================================================
   Privacy policy page
   ========================================================================== */

.policy-content {
  max-width: 46rem;
  margin-inline: auto;
  padding-block: clamp(2.5rem, 6vw, 4rem);
}

.policy-content h1 {
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  margin-bottom: var(--space-2);
}

.policy-content .effective-date {
  color: var(--muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-5);
}

.policy-content h2 {
  font-size: clamp(1.125rem, 2.4vw, 1.375rem);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

.policy-content p,
.policy-content li {
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: var(--space-2);
}

.policy-content ul {
  padding-left: 1.25rem;
  margin-bottom: var(--space-3);
}

.policy-content li {
  margin-bottom: var(--space-1);
}

.policy-content strong {
  color: var(--text);
  font-weight: 600;
}

.policy-content code {
  padding: 0.1rem 0.35rem;
  border-radius: var(--radius-xs);
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.875em;
}

.policy-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.policy-content a:hover {
  color: var(--accent-strong);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (min-width: 40rem) {
  .nav-list {
    display: flex;
  }
}

@media (min-width: 48rem) {
  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .preview-pane + .preview-pane {
    border-top: 0;
    border-left: 1px solid var(--border);
  }

  .cta-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .cta-inner .button {
    flex: none;
  }
}

@media (min-width: 60rem) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

@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:hover,
  .card:hover {
    transform: none;
  }
}