/* Readista — landing + legal pages. Tokens mirror lib/theme/app_colors.dart. */

@font-face {
  font-family: "Instrument Serif";
  src: url("fonts/InstrumentSerif-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Instrument Serif";
  src: url("fonts/InstrumentSerif-Italic.ttf") format("truetype");
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}

:root {
  --canvas: #f7f4ee;
  --surface: #fffdf9;
  --sunken: #efeae1;
  --ink: #1a1a1a;
  --ink-soft: #6b655f;
  --warm: #8c8680;
  --hair: rgba(140, 134, 128, 0.45);
  --hair-soft: rgba(140, 134, 128, 0.25);
  --accent: #2f45c5;
  --accent-text: #2f45c5;
  --accent-tint: rgba(47, 69, 197, 0.1);
  --on-accent: #f7f4ee;
  --gold: #c4a36e;
  --shadow: 0 30px 60px -30px rgba(60, 40, 20, 0.35);
  --shadow-soft: 0 18px 40px -24px rgba(60, 40, 20, 0.3);
  --serif: "Instrument Serif", "Iowan Old Style", "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --radius: 22px;
  --max: 1120px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #121110;
    --surface: #1c1a18;
    --sunken: #262320;
    --ink: #f7f4ee;
    --ink-soft: #b3aca3;
    --warm: #8c8680;
    --hair: rgba(247, 244, 238, 0.14);
    --hair-soft: rgba(247, 244, 238, 0.08);
    --accent: #4f63d8;
    --accent-text: #9da9f5;
    --accent-tint: rgba(79, 99, 216, 0.18);
    --shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.7);
    --shadow-soft: 0 18px 40px -24px rgba(0, 0, 0, 0.6);
    color-scheme: dark;
  }

  .ticks li::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.2l2.3 2.3 4.7-4.9' fill='none' stroke='%239da9f5' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent-text);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.serif {
  font-family: var(--serif);
  font-weight: 400;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.eyebrow--accent {
  color: var(--accent-text);
}

.mark {
  width: 26px;
  height: 10px;
  flex-shrink: 0;
  color: var(--accent);
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--canvas) 88%, transparent);
  -webkit-backdrop-filter: saturate(160%) blur(18px);
  backdrop-filter: saturate(160%) blur(18px);
  border-bottom: 0.5px solid var(--hair-soft);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
}

.brand .mark {
  width: 30px;
  height: 12px;
}

.wordmark {
  font-family: var(--serif);
  font-size: 26px;
  line-height: 1;
  letter-spacing: -0.01em;
}

.wordmark em {
  color: var(--accent-text);
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 15px;
}

.nav a {
  color: var(--ink-soft);
  text-decoration: none;
}

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

.nav .btn {
  color: var(--on-accent);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 10px 24px -12px rgba(47, 69, 197, 0.7);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn--lg {
  height: 56px;
  padding: 0 26px;
  font-size: 17px;
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 0.5px solid var(--ink);
  box-shadow: none;
}

.app-store-badge {
  display: inline-block;
  line-height: 0;
  border-radius: 12px;
  transition: transform 0.15s ease;
}

.app-store-badge:hover {
  transform: translateY(-1px);
}

.app-store-badge img {
  height: 54px;
  width: auto;
}

.legal-note {
  flex-basis: 100%;
  margin: 0;
  font-size: 12px;
  color: var(--warm);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 96px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto;
  height: 720px;
  background: radial-gradient(ellipse 50% 45% at 72% 35%, rgba(255, 214, 150, 0.35), transparent 70%);
  pointer-events: none;
}

.hero .wrap {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  align-items: center;
  gap: 48px;
}

.hero h1 {
  margin: 18px 0 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(46px, 6.6vw, 80px);
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.hero h1 em {
  display: block;
  color: var(--accent-text);
}

.hero .lede {
  max-width: 34ch;
  margin: 24px 0 0;
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink-soft);
}

.hero .cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 20px;
  margin-top: 36px;
}

.hero .fine {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.hero-visual {
  position: relative;
  justify-self: center;
  width: min(100%, 400px);
}

.phone {
  position: relative;
  width: 100%;
  max-width: 330px;
  margin: 0 auto;
  padding: 10px;
  border-radius: 54px;
  background: #1a1a1a;
  box-shadow: var(--shadow), inset 0 0 0 1.5px #3a3733;
}

.phone img {
  width: 100%;
  border-radius: 44px;
}

.float {
  position: absolute;
  border-radius: 24px;
  box-shadow: 0 24px 40px -18px rgba(40, 25, 5, 0.45);
}

.float--streak {
  width: 36%;
  left: -4%;
  top: 16%;
  transform: rotate(-6deg);
}

.float--book {
  width: 36%;
  right: -2%;
  bottom: 12%;
  transform: rotate(5deg);
}

/* ---------- Sections ---------- */

section {
  scroll-margin-top: 72px;
}

.section {
  padding: 96px 0;
}

.section--tint {
  background: var(--surface);
  border-top: 0.5px solid var(--hair-soft);
  border-bottom: 0.5px solid var(--hair-soft);
}

.section-head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-head h2 {
  margin: 14px 0 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.02;
  letter-spacing: -0.015em;
}

.section-head h2 em {
  color: var(--accent-text);
}

.section-head p {
  margin: 16px auto 0;
  max-width: 48ch;
  color: var(--ink-soft);
}

/* Feature rows: text + phone, alternating. */

.feature {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 56px;
}

.feature + .feature {
  margin-top: 104px;
}

.feature:nth-child(even) .feature-copy {
  order: 2;
}

.feature-copy h3 {
  margin: 12px 0 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(34px, 4vw, 46px);
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.feature-copy h3 em {
  color: var(--accent-text);
}

.feature-copy p {
  margin: 16px 0 0;
  max-width: 40ch;
  color: var(--ink-soft);
}

.ticks {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.ticks li {
  position: relative;
  padding-left: 28px;
  margin-top: 10px;
  font-size: 16px;
}

.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-tint)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.2l2.3 2.3 4.7-4.9' fill='none' stroke='%232f45c5' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")
    center / 16px no-repeat;
}

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

.feature-visual .phone {
  max-width: 300px;
}

/* Theme gallery */

.themes {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.theme {
  margin: 0;
}

.theme img {
  width: 100%;
  aspect-ratio: 560 / 794;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: var(--shadow-soft), inset 0 0 0 0.5px rgba(0, 0, 0, 0.08);
  background: var(--sunken);
}

.theme figcaption {
  margin-top: 12px;
}

.theme b {
  display: block;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.1;
}

.theme span {
  font-size: 13px;
  color: var(--ink-soft);
}

/* Widgets collage */

.widgets {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 22px;
  align-items: start;
  max-width: 880px;
  margin: 0 auto;
}

.widgets img {
  width: 100%;
  border-radius: 22px;
  box-shadow: var(--shadow-soft);
}

.widget-stack {
  display: grid;
  gap: 22px;
}

.widget-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.lock-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 36px;
  color: var(--ink-soft);
  font-size: 14px;
}

.lock-row .lock {
  padding: 14px 18px;
  border-radius: 20px;
  background: #1b1f33;
  display: flex;
  align-items: center;
  gap: 16px;
}

.lock-row .lock img {
  height: 58px;
  width: auto;
  box-shadow: none;
  border-radius: 0;
}

/* Privacy promise */

.promise {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card {
  padding: 26px 24px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 0.5px solid var(--hair);
}

.section--tint .card {
  background: var(--canvas);
}

.card h3 {
  margin: 14px 0 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 28px;
  line-height: 1.1;
}

.card p {
  margin: 10px 0 0;
  font-size: 16px;
  color: var(--ink-soft);
}

.card .icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent-tint);
  color: var(--accent-text);
}

.card .icon svg {
  width: 20px;
  height: 20px;
}

/* Final CTA */

.final {
  padding: 110px 0;
  text-align: center;
}

.final h2 {
  margin: 16px auto 0;
  max-width: 14ch;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(44px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -0.02em;
}

.final h2 em {
  color: var(--accent-text);
}

.final p {
  margin: 18px auto 34px;
  max-width: 42ch;
  color: var(--ink-soft);
}

.final .app-icon {
  width: 88px;
  height: 88px;
  margin: 0 auto;
  border-radius: 22px;
  box-shadow: var(--shadow-soft);
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 36px 0 48px;
  border-top: 0.5px solid var(--hair-soft);
  font-size: 14px;
  color: var(--ink-soft);
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}

.site-footer a {
  color: var(--ink-soft);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--ink);
}

/* ---------- Legal & support pages ---------- */

.doc {
  padding: 64px 0 96px;
}

.doc .wrap {
  max-width: 760px;
}

.doc h1 {
  margin: 14px 0 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(44px, 6vw, 64px);
  line-height: 1;
  letter-spacing: -0.015em;
}

.doc h1 em {
  color: var(--accent-text);
}

.doc .updated {
  margin: 14px 0 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.doc .summary {
  margin: 36px 0 8px;
  padding: 22px 24px;
  border-radius: 18px;
  background: var(--surface);
  border: 0.5px solid var(--hair);
}

.doc .summary h2 {
  margin: 0 0 6px;
  font-size: 13px;
  font-family: var(--sans);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-text);
}

.doc .summary ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

.doc h2 {
  margin: 48px 0 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 32px;
  line-height: 1.1;
}

.doc h3 {
  margin: 28px 0 0;
  font-size: 17px;
  font-weight: 600;
}

.doc p,
.doc li {
  color: var(--ink);
}

.doc p {
  margin: 12px 0 0;
}

.doc ul {
  margin: 12px 0 0;
  padding-left: 22px;
}

.doc li + li {
  margin-top: 6px;
}

.doc .muted {
  color: var(--ink-soft);
}

.doc table {
  width: 100%;
  margin-top: 16px;
  border-collapse: collapse;
  font-size: 15px;
}

.doc th,
.doc td {
  padding: 12px 10px;
  border-bottom: 0.5px solid var(--hair);
  text-align: left;
  vertical-align: top;
}

.doc th {
  font-weight: 600;
  color: var(--ink-soft);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.doc .contact {
  margin-top: 48px;
  padding: 24px;
  border-radius: 18px;
  background: var(--accent-tint);
}

.doc .contact p {
  margin: 6px 0 0;
}

.faq details {
  margin-top: 14px;
  padding: 18px 20px;
  border-radius: 16px;
  background: var(--surface);
  border: 0.5px solid var(--hair);
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  float: right;
  font-weight: 400;
  color: var(--ink-soft);
}

.faq details[open] summary::after {
  content: "–";
}

.faq details p {
  margin: 10px 0 0;
  color: var(--ink-soft);
}

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .themes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 820px) {
  .nav a:not(.btn) {
    display: none;
  }

  .hero {
    padding: 40px 0 72px;
  }

  .hero .wrap,
  .feature {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }

  .hero-copy {
    text-align: center;
  }

  .hero .lede {
    margin-left: auto;
    margin-right: auto;
  }

  .hero .cta {
    justify-content: center;
  }

  .feature:nth-child(even) .feature-copy {
    order: 0;
  }

  .feature + .feature {
    margin-top: 80px;
  }

  .feature-copy {
    text-align: center;
  }

  .feature-copy p {
    margin-left: auto;
    margin-right: auto;
  }

  .ticks {
    display: inline-block;
    text-align: left;
  }

  .widgets {
    grid-template-columns: minmax(0, 1fr);
    max-width: 560px;
  }

  .section {
    padding: 72px 0;
  }
}

@media (max-width: 480px) {
  .wrap {
    padding: 0 16px;
  }

  .themes {
    gap: 14px;
  }

  .theme b {
    font-size: 19px;
  }

  .hero-visual {
    width: min(100%, 320px);
  }

  .float--streak {
    width: 34%;
    left: -6px;
    top: 18%;
  }

  .float--book {
    width: 34%;
    right: -6px;
  }

  .lock-row {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn,
  .app-store-badge {
    transition: none;
  }
}