/* ==========================================================================
   Noteora — Design Tokens
   Palette matches the app's own iOS system blue (#007AFF) and flat,
   shadow-free surfaces, so the website feels like the same product.
   ========================================================================== */

:root {
  /* Color — light (default) */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F7F7F9;
  --color-surface: #FFFFFF;
  --color-fg: #0F1115;
  --color-fg-muted: #5B5F6B;
  --color-border: #E4E5EA;
  --color-primary: #007AFF;
  --color-primary-hover: #0066D6;
  --color-on-primary: #FFFFFF;
  --color-danger: #FF3B30;
  --color-focus-ring: #007AFF;

  /* Type */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.375rem;
  --fs-xl: 1.75rem;
  --fs-2xl: 2.5rem;
  --fs-3xl: 3.25rem;
  --lh-tight: 1.15;
  --lh-normal: 1.55;

  /* Spacing (8px rhythm) */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 8rem;

  /* Shape / motion */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --duration: 180ms;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1120px;
}

:root[data-theme='dark'] {
  --color-bg: #0B0B0D;
  --color-bg-alt: #0F0F12;
  --color-surface: #1A1A1E;
  --color-fg: #F5F5F7;
  --color-fg-muted: #9A9AA2;
  --color-border: #2A2A2F;
  --color-primary: #0A84FF;
  --color-primary-hover: #3AA0FF;
  --color-on-primary: #FFFFFF;
  --color-danger: #FF453A;
  --color-focus-ring: #0A84FF;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --color-bg: #0B0B0D;
    --color-bg-alt: #0F0F12;
    --color-surface: #1A1A1E;
    --color-fg: #F5F5F7;
    --color-fg-muted: #9A9AA2;
    --color-border: #2A2A2F;
    --color-primary: #0A84FF;
    --color-primary-hover: #3AA0FF;
    --color-on-primary: #FFFFFF;
    --color-danger: #FF453A;
    --color-focus-ring: #0A84FF;
  }
}

/* ==========================================================================
   Reset
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--color-fg);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--duration) var(--ease), color var(--duration) var(--ease);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p { margin: 0; }
button { font: inherit; color: inherit; background: none; border: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* Focus visibility — never remove, only restyle */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: var(--color-primary); color: var(--color-on-primary); }

/* ==========================================================================
   Layout helpers
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

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

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -60px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top var(--duration) var(--ease);
}
.skip-link:focus { top: var(--space-2); }

section { padding-block: var(--space-7); }
@media (max-width: 768px) {
  section { padding-block: var(--space-6); }
}

.eyebrow {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-5);
}
.section-head.center { margin-inline: auto; text-align: center; }

h2 {
  font-size: var(--fs-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: var(--lh-tight);
}

.section-sub {
  margin-top: var(--space-2);
  font-size: var(--fs-md);
  color: var(--color-fg-muted);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--fs-base);
  cursor: pointer;
  transition: background-color var(--duration) var(--ease), color var(--duration) var(--ease), transform var(--duration) var(--ease), border-color var(--duration) var(--ease);
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }

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

.btn-ghost {
  background: transparent;
  color: var(--color-fg);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* App Store badge button */
.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 1.3rem;
  border-radius: var(--radius-md);
  background: #000000;
  color: #FFFFFF;
  border: 1px solid #000000;
  cursor: pointer;
  transition: transform var(--duration) var(--ease), opacity var(--duration) var(--ease);
}
.store-badge:hover { opacity: 0.85; }
.store-badge:active { transform: scale(0.97); }
:root[data-theme='dark'] .store-badge { background: #FFFFFF; color: #000000; border-color: #FFFFFF; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) .store-badge { background: #FFFFFF; color: #000000; border-color: #FFFFFF; }
}
.store-badge svg { flex-shrink: 0; }
.store-badge .store-text { text-align: left; line-height: 1.15; }
.store-badge .store-text small { display: block; font-size: 0.7rem; font-weight: 400; opacity: 0.85; }
.store-badge .store-text strong { display: block; font-size: 1.15rem; font-weight: 600; letter-spacing: -0.01em; }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: var(--fs-md);
  letter-spacing: -0.01em;
}
.brand .mark {
  width: 32px; height: 32px;
  border-radius: 9px;
  overflow: hidden;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.brand .mark img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.nav-links a {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-fg-muted);
  transition: color var(--duration) var(--ease);
}
.nav-links a:hover { color: var(--color-fg); }

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

.theme-toggle {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: border-color var(--duration) var(--ease);
}
.theme-toggle:hover { border-color: var(--color-primary); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
:root[data-theme='dark'] .theme-toggle .icon-sun { display: none; }
:root[data-theme='dark'] .theme-toggle .icon-moon { display: block; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    inset: 72px 0 0 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-3);
    gap: var(--space-3);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration) var(--ease), transform var(--duration) var(--ease);
  }
  .nav-links a { font-size: var(--fs-md); }
  body.nav-open .nav-links {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav-toggle { display: flex; }
}

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

.hero {
  padding-block: var(--space-7) var(--space-6);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: var(--space-6);
}
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; gap: var(--space-5); }
  .hero-copy { order: 1; }
  .hero-visual { order: 2; }
  .hero-actions, .hero-meta { justify-content: center; }
}

.hero h1 {
  font-size: var(--fs-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: var(--lh-tight);
}
@media (max-width: 640px) {
  .hero h1 { font-size: 2.2rem; }
}

.hero-sub {
  margin-top: var(--space-3);
  font-size: var(--fs-md);
  color: var(--color-fg-muted);
  max-width: 560px;
}
@media (max-width: 1024px) { .hero-sub { margin-inline: auto; } }

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

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  margin-top: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-fg-muted);
}
.hero-meta li { display: flex; align-items: center; gap: 0.4rem; }
.hero-meta svg { width: 16px; height: 16px; color: var(--color-primary); flex-shrink: 0; }

/* Hero visual: illustrated note card mockup (no real screenshot claimed) */
.hero-visual { display: flex; justify-content: center; }
.mock-frame {
  position: relative;
  width: 100%;
  max-width: 340px;
}
.mock-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-3);
  position: relative;
  z-index: 2;
}
.mock-card .mock-title {
  height: 14px;
  width: 62%;
  border-radius: 5px;
  background: var(--color-fg);
  opacity: 0.85;
  margin-bottom: var(--space-3);
}
.mock-line { height: 9px; border-radius: 4px; background: var(--color-border); margin-bottom: 10px; }
.mock-line.w-100 { width: 100%; }
.mock-line.w-90 { width: 90%; }
.mock-line.w-70 { width: 70%; }
.mock-checklist { margin-top: var(--space-3); display: flex; flex-direction: column; gap: 10px; }
.mock-check-item { display: flex; align-items: center; gap: 10px; }
.mock-check-box {
  width: 16px; height: 16px;
  border-radius: 5px;
  border: 1.5px solid var(--color-primary);
  flex-shrink: 0;
}
.mock-check-box.done { background: var(--color-primary); position: relative; }
.mock-check-line { height: 8px; border-radius: 4px; background: var(--color-border); flex: 1; }
.mock-card-2 {
  position: absolute;
  right: -18px;
  bottom: -26px;
  width: 62%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2);
  z-index: 1;
  box-shadow: 0 20px 40px -18px rgba(0,0,0,0.25);
}
:root[data-theme='dark'] .mock-card-2 { box-shadow: none; }
.mock-card-2 .pin-row { display: flex; align-items: center; gap: 8px; }
.mock-card-2 .pin-icon {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--color-primary) 14%, transparent);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.mock-card-2 .pin-copy { flex: 1; }
.mock-card-2 .pin-copy .t { height: 8px; width: 70%; border-radius: 4px; background: var(--color-fg); opacity: 0.8; margin-bottom: 6px; }
.mock-card-2 .pin-copy .s { height: 7px; width: 45%; border-radius: 4px; background: var(--color-border); }

/* ==========================================================================
   Trust bar
   ========================================================================== */

.trust-bar {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-4);
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  text-align: center;
}
@media (max-width: 768px) {
  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-4) var(--space-3); }
}
.trust-item svg { width: 26px; height: 26px; color: var(--color-primary); margin-inline: auto; margin-bottom: 0.6rem; }
.trust-item .t { font-weight: 600; font-size: var(--fs-sm); }
.trust-item .s { font-size: 0.8rem; color: var(--color-fg-muted); margin-top: 2px; }

/* ==========================================================================
   Feature grid
   ========================================================================== */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
@media (max-width: 1024px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .feature-grid { grid-template-columns: 1fr; } }

.feature-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: border-color var(--duration) var(--ease), transform var(--duration) var(--ease);
}
.feature-card:hover { border-color: var(--color-primary); transform: translateY(-2px); }

.feature-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-primary) 12%, transparent);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-2);
}
.feature-icon svg { width: 22px; height: 22px; }

.feature-card h3 {
  font-size: var(--fs-md);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.4rem;
}
.feature-card p { color: var(--color-fg-muted); font-size: var(--fs-sm); }

.feature-card ul {
  margin-top: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.feature-card li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: var(--fs-sm);
  color: var(--color-fg-muted);
}
.feature-card li svg {
  width: 16px; height: 16px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 3px;
}

/* ==========================================================================
   Spotlight (alternating detail rows)
   ========================================================================== */

.spotlight-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: center;
  padding-block: var(--space-5);
}
.spotlight-row:not(:last-child) { border-bottom: 1px solid var(--color-border); }
.spotlight-row.reverse .spotlight-visual { order: 2; }
.spotlight-row.reverse .spotlight-copy { order: 1; }

@media (max-width: 900px) {
  .spotlight-row, .spotlight-row.reverse { grid-template-columns: 1fr; }
  .spotlight-row.reverse .spotlight-visual,
  .spotlight-row.reverse .spotlight-copy,
  .spotlight-visual, .spotlight-copy { order: initial; }
  .spotlight-visual { order: -1; }
}

.spotlight-copy h3 { font-size: var(--fs-xl); font-weight: 700; letter-spacing: -0.02em; margin-bottom: var(--space-2); }
.spotlight-copy p { color: var(--color-fg-muted); }
.spotlight-copy ul { margin-top: var(--space-3); display: flex; flex-direction: column; gap: 0.65rem; }
.spotlight-copy li { display: flex; gap: 0.6rem; align-items: flex-start; font-size: var(--fs-sm); }
.spotlight-copy li svg { width: 18px; height: 18px; color: var(--color-primary); flex-shrink: 0; margin-top: 2px; }

.spotlight-visual {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex; align-items: center; justify-content: center;
  min-height: 260px;
}
.spotlight-visual svg { width: 100%; max-width: 260px; height: auto; }

/* ==========================================================================
   Privacy banner
   ========================================================================== */

.privacy-banner {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  align-items: center;
}
@media (max-width: 768px) {
  .privacy-banner { grid-template-columns: 1fr; text-align: center; }
  .privacy-banner .privacy-icon { margin-inline: auto; }
}
.privacy-banner .privacy-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-primary) 12%, transparent);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
}
.privacy-banner .privacy-icon svg { width: 32px; height: 32px; }
.privacy-banner h3 { font-size: var(--fs-lg); font-weight: 700; margin-bottom: 0.4rem; letter-spacing: -0.01em; }
.privacy-banner p { color: var(--color-fg-muted); }

/* ==========================================================================
   Final CTA
   ========================================================================== */

.final-cta {
  text-align: center;
}
.final-cta h2 { max-width: 620px; margin-inline: auto; }
.final-cta .section-sub { max-width: 520px; margin-inline: auto; }
.final-cta .hero-actions { justify-content: center; }

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

.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-5);
  background: var(--color-bg-alt);
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.footer-brand { max-width: 280px; }
.footer-brand .brand { margin-bottom: var(--space-2); }
.footer-brand p { color: var(--color-fg-muted); font-size: var(--fs-sm); }

.footer-cols { display: flex; gap: var(--space-6); flex-wrap: wrap; }
.footer-col h4 { font-size: var(--fs-sm); font-weight: 600; margin-bottom: var(--space-2); }
.footer-col ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a { font-size: var(--fs-sm); color: var(--color-fg-muted); transition: color var(--duration) var(--ease); }
.footer-col a:hover { color: var(--color-primary); }

.footer-bottom {
  margin-top: var(--space-5);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: 0.8rem;
  color: var(--color-fg-muted);
}

/* ==========================================================================
   Legal pages
   ========================================================================== */

.legal-page { padding-block: var(--space-6) var(--space-7); }
.legal-header { max-width: 720px; margin-bottom: var(--space-5); }
.legal-header h1 { font-size: var(--fs-2xl); font-weight: 800; letter-spacing: -0.02em; }
.legal-header .updated { margin-top: var(--space-1); color: var(--color-fg-muted); font-size: var(--fs-sm); }

.legal-body { max-width: 720px; }
.legal-body h2 {
  font-size: var(--fs-lg);
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}
.legal-body h2:first-child { margin-top: 0; }
.legal-body p { margin-bottom: var(--space-2); color: var(--color-fg-muted); }
.legal-body p strong { color: var(--color-fg); }
.legal-body ul { margin: var(--space-2) 0 var(--space-3); display: flex; flex-direction: column; gap: 0.5rem; }
.legal-body li {
  padding-left: 1.4rem;
  position: relative;
  color: var(--color-fg-muted);
}
.legal-body li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.55em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}
.legal-body a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 2px; }
.legal-callout {
  margin: var(--space-4) 0;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-2);
}
.legal-callout svg { width: 22px; height: 22px; color: var(--color-primary); flex-shrink: 0; }
.legal-callout p { margin: 0; color: var(--color-fg); font-size: var(--fs-sm); }

.legal-nav-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-fg-muted);
  margin-bottom: var(--space-4);
}
.legal-nav-back:hover { color: var(--color-primary); }
.legal-nav-back svg { width: 16px; height: 16px; }