/* =========================================================
   FQ-AdBlocker – Landing Page
   ========================================================= */

/* --- Tokens ------------------------------------------------ */

:root {
  color-scheme: light dark;
  --font-sans: "Aptos", "Segoe UI Variable Text", "Segoe UI", system-ui, sans-serif;
  --font-mono: "Cascadia Code", "Cascadia Mono", "Consolas", ui-monospace, monospace;
  --bg: #f5f7fb;
  --bg-accent: #dce7f2;
  --surface: rgba(255, 255, 255, 0.82);
  --text: #162031;
  --muted: #5d6a7f;
  --accent: #d13b49;
  --accent-strong: #aa2135;
  --border: rgba(22, 32, 49, 0.1);
  --shadow: 0 20px 40px rgba(32, 43, 63, 0.12);
  --radius: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111723;
    --bg-accent: #1b2434;
    --surface: rgba(22, 29, 42, 0.88);
    --text: #edf2ff;
    --muted: #aab6cf;
    --accent: #ff6b57;
    --accent-strong: #ff826c;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: 0 24px 48px rgba(0, 0, 0, 0.34);
  }
}

/* --- Reset & Base ------------------------------------------ */

html {
  overflow-y: scroll;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.24), transparent 40%),
    linear-gradient(160deg, var(--bg), var(--bg-accent));
  background-attachment: fixed;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  margin: 0;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul {
  padding-left: 1.25em;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--border);
}

img {
  display: block;
}

/* --- Container --------------------------------------------- */

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 720px;
}

/* --- Nav --------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}

.nav-brand:hover {
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  transition: color 150ms ease;
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

.nav-github {
  display: flex;
  align-items: center;
}

/* --- Eyebrow ----------------------------------------------- */

.eyebrow {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: var(--radius);
  padding: 12px 32px 14px;
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(209, 59, 73, 0.26);
  transition: transform 120ms ease, filter 120ms ease;
  text-decoration: none;
}

.btn:hover {
  filter: brightness(1.08);
  text-decoration: none;
  transform: translateY(-1px);
}

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

.btn-outline {
  color: var(--text);
  background: transparent;
  border: 2px solid var(--border);
  box-shadow: none;
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

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

.hero {
  position: relative;
  overflow: hidden;
  padding: 100px 0 120px;
  text-align: center;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  line-height: 1.05;
  margin-bottom: 20px;
}

.hero-sub {
  max-width: 540px;
  margin: 0 auto 36px;
  font-size: 1.15rem;
  color: var(--muted);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-glow {
  position: absolute;
  top: -40%;
  left: 50%;
  translate: -50% 0;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 18%, transparent), transparent 70%);
  pointer-events: none;
}

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

.section {
  padding: 100px 0;
}

.section-alt {
  background: color-mix(in srgb, var(--surface) 50%, transparent);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  text-align: center;
  margin-bottom: 56px;
}

/* --- Cards ------------------------------------------------- */

.card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 56px rgba(32, 43, 63, 0.16);
}

@media (prefers-color-scheme: dark) {
  .card:hover {
    box-shadow: 0 28px 56px rgba(0, 0, 0, 0.4);
  }
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.card p {
  font-size: 0.95rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.55;
}

/* --- Features Grid ----------------------------------------- */

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

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

@media (max-width: 560px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Steps Grid -------------------------------------------- */

.steps-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 800px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.step {
  text-align: center;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  border-radius: 50%;
  font-size: 1.15rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 8px 20px rgba(209, 59, 73, 0.25);
}

.step h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.step p {
  font-size: 0.92rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.5;
}

/* --- Changelog --------------------------------------------- */

.changelog-entry {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.changelog-entry + .changelog-entry {
  margin-top: 20px;
}

.changelog-version {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.changelog-version time {
  font-size: 0.9rem;
  color: var(--muted);
}

.changelog-entry ul {
  margin: 0;
}

.changelog-entry li {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.6;
}

.changelog-entry li + li {
  margin-top: 4px;
}

/* --- More Extensions --------------------------------------- */

.extensions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.extension-card {
  display: block;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, transform 0.2s;
}

.extension-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  text-decoration: none;
}

.extension-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.extension-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.extension-card p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.5;
}

@media (max-width: 700px) {
  .extensions-grid {
    grid-template-columns: 1fr;
  }
}

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

.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-inner p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  font-size: 0.88rem;
  font-weight: 600;
}

/* --- Active nav link --------------------------------------- */

.nav-active {
  color: var(--text) !important;
}

/* --- Privacy / content pages ------------------------------- */

.page-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 8px;
}

.last-updated {
  font-size: 0.88rem;
  color: var(--muted);
  margin: 0 0 28px;
}

.container-narrow h2 {
  font-size: 1.3rem;
  margin-top: 36px;
  margin-bottom: 12px;
}

.container-narrow p,
.container-narrow li {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.65;
}

.container-narrow a {
  word-break: break-word;
}

.container-narrow ul {
  padding-left: 1.25em;
  margin: 8px 0 16px;
}

.container-narrow li + li {
  margin-top: 4px;
}

.highlight-box {
  margin: 20px 0 28px;
  padding: 18px 22px;
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border));
  background: color-mix(in srgb, var(--accent) 6%, var(--surface));
}

.highlight-box strong {
  color: var(--accent);
}

/* --- Smooth scroll ----------------------------------------- */

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}