/* ===========================================================
   FoxUI — Stylesheet
   Dark mode glassmorphism design system
   =========================================================== */

/* -----------------------------------------------------------
   1. Design tokens
----------------------------------------------------------- */
:root {
  /* Backgrounds */
  --bg-deep: #06080f;
  --card-bg-1: rgba(255, 255, 255, 0.03);
  --card-bg-2: rgba(255, 255, 255, 0.06);

  /* Borders */
  --border-soft: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  /* Text */
  --text-primary: rgba(255, 255, 255, 0.95);
  --text-muted: rgba(255, 255, 255, 0.5);
  --text-faint: rgba(255, 255, 255, 0.32);

  /* Accent — Chrome */
  --chrome: #7eb8f7;
  --chrome-bg: rgba(126, 184, 247, 0.12);
  --chrome-border: rgba(126, 184, 247, 0.3);

  /* Accent — Firefox */
  --firefox: #ff8b54;
  --firefox-bg: rgba(255, 113, 64, 0.12);
  --firefox-border: rgba(255, 113, 64, 0.3);

  /* Accent — Donate */
  --paypal: #009cde;
  --paypal-bg: rgba(0, 156, 222, 0.1);
  --paypal-border: rgba(0, 156, 222, 0.32);
  --paypal-glow: rgba(0, 156, 222, 0.4);
  --kofi: #ff6433;
  --kofi-bg: rgba(255, 100, 51, 0.1);
  --kofi-border: rgba(255, 100, 51, 0.32);
  --kofi-glow: rgba(255, 100, 51, 0.4);

  /* Type */
  --font-body: 'Inter', sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;

  /* Layout */
  --max-width: 1180px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* -----------------------------------------------------------
   2. Reset
----------------------------------------------------------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  padding-inline: env(safe-area-inset-left) env(safe-area-inset-right);
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

:focus-visible {
  outline: 2px solid var(--chrome);
  outline-offset: 3px;
  border-radius: 4px;
}

/* -----------------------------------------------------------
   3. Ambient background
----------------------------------------------------------- */
.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(10px);
  opacity: 0.55;
  will-change: transform;
}

.glow-chrome {
  width: 620px;
  height: 620px;
  top: -180px;
  left: -120px;
  background: radial-gradient(circle, rgba(126, 184, 247, 0.22) 0%, rgba(126, 184, 247, 0) 70%);
  animation: drift-a 22s ease-in-out infinite;
}

.glow-firefox {
  width: 680px;
  height: 680px;
  top: 30%;
  right: -200px;
  background: radial-gradient(circle, rgba(255, 113, 64, 0.18) 0%, rgba(255, 113, 64, 0) 70%);
  animation: drift-b 26s ease-in-out infinite;
}

/* Subtle grain so the dark field reads as material, not a flat gradient */
.ambient-bg::after {
  content: '';
  position: absolute;
  inset: -10%;
  background-image: url("data:image/svg+xml;utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.035;
  mix-blend-mode: overlay;
}

@keyframes drift-a {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 60px) scale(1.08); }
}

@keyframes drift-b {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-50px, -40px) scale(1.05); }
}

/* Content layer sits above the ambient background */
.page {
  position: relative;
  z-index: 1;
}

/* -----------------------------------------------------------
   4. Layout helpers
----------------------------------------------------------- */
.navbar__inner,
.hero__inner,
.features,
.premium,
.settings,
.quote-banner,
.footer__inner {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 32px);
}

.section-title {
  font-size: clamp(1.6rem, 1.1rem + 1.5vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

/* -----------------------------------------------------------
   5. Navbar
----------------------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(6, 8, 15, 0.55);
  border-bottom: 1px solid var(--border-soft);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand__logo {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.brand__name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.navbar__github {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s var(--ease);
}

.navbar__github:hover {
  color: var(--text-primary);
}

/* -----------------------------------------------------------
   6. Hero
----------------------------------------------------------- */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: 96px;
  padding-bottom: 0;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--card-bg-2);
  border: 1px solid var(--border-strong);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.hero__title {
  font-size: clamp(2.6rem, 1.8rem + 3.5vw, 4.6rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  max-width: 880px;
  color: var(--text-primary);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 1) 0%,
    rgba(255, 255, 255, 0.78) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__subtitle {
  margin-top: 22px;
  max-width: 560px;
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.15rem);
  font-weight: 400;
  line-height: 1.65;
  color: var(--text-muted);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.btn__icon {
  font-size: 0.95em;
  line-height: 1;
}

.btn--chrome {
  color: var(--chrome);
  background: var(--chrome-bg);
  border-color: var(--chrome-border);
}

.btn--chrome:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -10px rgba(126, 184, 247, 0.45);
}

.btn--firefox {
  color: var(--firefox);
  background: var(--firefox-bg);
  border-color: var(--firefox-border);
}

.btn--firefox:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -10px rgba(255, 113, 64, 0.45);
}

/* -----------------------------------------------------------
   7. Mockup window
----------------------------------------------------------- */
.mockup {
  width: 100%;
  max-width: 920px;
  margin: 64px auto 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  background: linear-gradient(180deg, var(--card-bg-2) 0%, var(--card-bg-1) 100%);
  box-shadow:
    0 40px 80px -30px rgba(0, 0, 0, 0.65),
    0 0 0 1px rgba(255, 255, 255, 0.02) inset;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.mockup__chrome {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-soft);
}

.mockup__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
}

.mockup__dot--a { background: rgba(255, 113, 64, 0.55); }
.mockup__dot--b { background: rgba(255, 255, 255, 0.2); }
.mockup__dot--c { background: rgba(126, 184, 247, 0.55); }

.mockup__screen {
  position: relative;
  padding: 64px 40px 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-height: 360px;
  background:
    radial-gradient(circle at 25% 20%, rgba(126, 184, 247, 0.08), transparent 55%),
    radial-gradient(circle at 80% 70%, rgba(255, 113, 64, 0.07), transparent 55%);
}

.mockup__clock {
  font-size: clamp(3rem, 2.2rem + 3vw, 4.5rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.mockup__quote {
  margin-top: 10px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--text-muted);
}

.mockup__player {
  margin-top: 48px;
  width: 100%;
  max-width: 360px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: var(--card-bg-2);
  border: 1px solid var(--border-soft);
  text-align: left;
}

.mockup__player-art {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--chrome) 0%, var(--firefox) 100%);
  opacity: 0.85;
}

.mockup__player-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.mockup__player-track {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mockup__player-artist {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.mockup__player-icon {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 18px;
  flex-shrink: 0;
}

.eq-bar {
  width: 3px;
  border-radius: 2px;
  background: var(--chrome);
  transform-origin: bottom;
  animation: eq-pulse 0.9s var(--ease) infinite;
}

.eq-bar:nth-child(1) {
  height: 10px;
  animation-delay: 0s;
}

.eq-bar:nth-child(2) {
  height: 16px;
  animation-delay: 0.15s;
}

.eq-bar:nth-child(3) {
  height: 8px;
  animation-delay: 0.3s;
}

@keyframes eq-pulse {
  0%, 100% { transform: scaleY(0.45); opacity: 0.55; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* -----------------------------------------------------------
   8. Features grid
----------------------------------------------------------- */
.features {
  padding-top: 140px;
}

.features .section-title {
  text-align: center;
  margin-bottom: 48px;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}

.card {
  position: relative;
  border-radius: var(--radius-md);
  background: var(--card-bg-1);
  border: 1px solid var(--border-soft);
  padding: 32px;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), transform 0.25s var(--ease);
}

.card:hover {
  background: var(--card-bg-2);
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.card--span-6 { grid-column: span 6; }
.card--span-4 { grid-column: span 4; }
.card--span-8 { grid-column: span 8; }

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--card-bg-2);
  border: 1px solid var(--border-soft);
  font-size: 1.2rem;
  margin-bottom: 20px;
  color: var(--chrome);
}

.card__title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.card__text {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 480px;
}

/* -----------------------------------------------------------
   9. Premium teaser
----------------------------------------------------------- */
.premium {
  padding-top: 64px;
}

.premium__panel {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 32px;
  border-radius: var(--radius-md);
  background: linear-gradient(120deg, var(--chrome-bg) 0%, var(--firefox-bg) 100%);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.premium__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--card-bg-2);
  border: 1px solid var(--border-strong);
  font-size: 1.3rem;
  color: var(--text-primary);
}

.premium__copy {
  flex: 1;
  min-width: 0;
}

.premium__eyebrow {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.premium__title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.premium__text {
  margin-top: 4px;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--text-muted);
  max-width: 520px;
}

.premium__status {
  flex-shrink: 0;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--card-bg-2);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  white-space: nowrap;
}

/* -----------------------------------------------------------
   10. Settings dual-panel section
----------------------------------------------------------- */
.settings {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 64px;
  align-items: center;
  padding-top: 140px;
}

.settings__text {
  margin-top: 18px;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 440px;
}

.settings__panels {
  display: flex;
  gap: 20px;
}

.panel-img {
  flex: 1;
  min-width: 0;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-md);
  background: var(--card-bg-1);
  border: 1px solid var(--border-soft);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.55);
}

.panel-img--a { transform: translateY(-12px); }
.panel-img--b { transform: translateY(12px); }

.panel-img__row {
  height: 12px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.07);
}

.panel-img__row--title {
  width: 60%;
  height: 14px;
  background: rgba(255, 255, 255, 0.14);
}

.panel-img__row--short {
  width: 40%;
}

.panel-img__toggle {
  margin-top: auto;
  width: 38px;
  height: 20px;
  border-radius: 999px;
  background: var(--chrome-bg);
  border: 1px solid var(--chrome-border);
  position: relative;
}

.panel-img__toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  right: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--chrome);
}

.panel-img__toggle--off {
  background: var(--card-bg-2);
  border-color: var(--border-soft);
}

.panel-img__toggle--off::after {
  right: auto;
  left: 2px;
  background: var(--text-faint);
}

/* -----------------------------------------------------------
   10. Quote banner
----------------------------------------------------------- */
.quote-banner {
  padding-top: 140px;
  padding-bottom: 20px;
  display: flex;
  justify-content: center;
}

.quote-banner__text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.4rem, 1.1rem + 1.3vw, 2.1rem);
  line-height: 1.4;
  text-align: center;
  max-width: 760px;
  color: var(--text-primary);
}

/* -----------------------------------------------------------
   11. Footer & donate buttons
----------------------------------------------------------- */
.footer {
  margin-top: 120px;
  border-top: 1px solid var(--border-soft);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 40px;
  padding-block: 48px 32px;
}

.footer__support {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  padding: clamp(28px, 5vw, 40px);
  border-radius: var(--radius-lg);
  background: linear-gradient(
    160deg,
    rgba(255, 255, 255, 0.04) 0%,
    rgba(255, 255, 255, 0.02) 100%
  );
  border: 1px solid var(--border-soft);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  text-align: center;
}

.footer__support-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  max-width: 420px;
}

.footer__support-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.footer__support-text {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-faint);
}

.footer__donate {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  width: 100%;
  max-width: 520px;
}

.donate-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  min-height: 72px;
  border-radius: var(--radius-md);
  font-weight: 600;
  border: 1px solid transparent;
  background: var(--card-bg-1);
  transition:
    transform 0.22s var(--ease),
    background 0.22s var(--ease),
    border-color 0.22s var(--ease),
    box-shadow 0.22s var(--ease);
}

.donate-btn__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--card-bg-2);
  border: 1px solid var(--border-soft);
}

.donate-btn__icon svg {
  width: 22px;
  height: 22px;
}

.donate-btn__label {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
  text-align: left;
}

.donate-btn__name {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.donate-btn__hint {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
  line-height: 1.3;
}

.donate-btn__arrow {
  font-size: 0.85rem;
  opacity: 0;
  transform: translate(-4px, 4px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease);
  flex-shrink: 0;
}

.donate-btn:hover .donate-btn__arrow,
.donate-btn:focus-visible .donate-btn__arrow {
  opacity: 0.7;
  transform: translate(0, 0);
}

.donate-btn--paypal {
  color: var(--paypal);
  background: var(--paypal-bg);
  border-color: var(--paypal-border);
}

.donate-btn--paypal .donate-btn__icon {
  color: var(--paypal);
  background: rgba(0, 156, 222, 0.12);
  border-color: var(--paypal-border);
}

.donate-btn--paypal:hover,
.donate-btn--paypal:focus-visible {
  transform: translateY(-2px);
  background: rgba(0, 156, 222, 0.16);
  border-color: rgba(0, 156, 222, 0.5);
  box-shadow: 0 12px 32px -12px var(--paypal-glow);
}

.donate-btn--kofi {
  color: var(--kofi);
  background: var(--kofi-bg);
  border-color: var(--kofi-border);
}

.donate-btn--kofi .donate-btn__icon {
  color: var(--kofi);
  background: rgba(255, 100, 51, 0.12);
  border-color: var(--kofi-border);
}

.donate-btn--kofi:hover,
.donate-btn--kofi:focus-visible {
  transform: translateY(-2px);
  background: rgba(255, 100, 51, 0.16);
  border-color: rgba(255, 100, 51, 0.5);
  box-shadow: 0 12px 32px -12px var(--kofi-glow);
}

.footer__base {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  width: 100%;
}

.footer__credit {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer__link {
  color: var(--text-primary);
  font-weight: 500;
  border-bottom: 1px solid var(--border-strong);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.footer__link:hover {
  color: var(--chrome);
  border-color: var(--chrome-border);
}

.footer__tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--card-bg-1);
  border: 1px solid var(--border-soft);
  white-space: nowrap;
}

/* ===========================================================
   12. Responsive — Tablet (≤ 1024px)
   =========================================================== */
@media (max-width: 1024px) {
  .features {
    padding-top: 110px;
  }

  .card--span-6 { grid-column: span 6; }
  .card--span-4 { grid-column: span 6; }
  .card--span-8 { grid-column: span 12; }

  .premium__panel {
    flex-wrap: wrap;
    gap: 20px;
  }

  .premium__status {
    margin-left: auto;
  }

  .settings {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-top: 110px;
    text-align: center;
  }

  .settings__copy {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .settings__text {
    max-width: 520px;
  }

  .panel-img--a,
  .panel-img--b {
    transform: none;
  }

  .settings__panels {
    max-width: 460px;
    margin-inline: auto;
  }

  .quote-banner {
    padding-top: 110px;
  }

  .footer {
    margin-top: 96px;
  }

  .glow-chrome {
    width: 480px;
    height: 480px;
  }

  .glow-firefox {
    width: 520px;
    height: 520px;
  }
}

/* ===========================================================
   13. Responsive — Mobile (≤ 640px)
   =========================================================== */
@media (max-width: 640px) {
  .navbar__inner {
    height: 64px;
  }

  .brand__name {
    font-size: 1.05rem;
  }

  .hero {
    padding-top: 56px;
  }

  .badge {
    font-size: 0.72rem;
    padding: 6px 14px;
  }

  .hero__subtitle {
    max-width: 100%;
  }

  .cta-row {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .mockup {
    margin-top: 48px;
    border-radius: var(--radius-md);
  }

  .mockup__screen {
    padding: 48px 20px 56px;
    min-height: 280px;
  }

  .mockup__player {
    max-width: 100%;
  }

  .features {
    padding-top: 88px;
  }

  .features__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .card--span-6,
  .card--span-4,
  .card--span-8 {
    grid-column: 1 / -1;
  }

  .card {
    padding: 26px;
  }

  .premium {
    padding-top: 48px;
  }

  .premium__panel {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    text-align: left;
  }

  .premium__status {
    margin-left: 0;
    align-self: flex-start;
  }

  .settings {
    padding-top: 88px;
  }

  .settings__panels {
    flex-direction: column;
    gap: 16px;
    max-width: 280px;
  }

  .panel-img {
    aspect-ratio: 16 / 10;
  }

  .quote-banner {
    padding-top: 88px;
  }

  .quote-banner__text {
    padding-inline: 8px;
  }

  .footer {
    margin-top: 72px;
  }

  .footer__inner {
    gap: 32px;
    padding-block: 40px 28px;
  }

  .footer__support {
    gap: 24px;
    padding: 24px 20px;
    border-radius: var(--radius-md);
  }

  .footer__donate {
    grid-template-columns: 1fr;
    max-width: 100%;
  }

  .donate-btn {
    min-height: 64px;
    padding: 14px 16px;
  }

  .footer__base {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .footer__tags {
    width: 100%;
  }

  .glow-chrome {
    width: 320px;
    height: 320px;
    opacity: 0.4;
  }

  .glow-firefox {
    width: 360px;
    height: 360px;
    opacity: 0.35;
  }
}

/* ===========================================================
   14. Responsive — Small mobile (≤ 380px)
   =========================================================== */
@media (max-width: 380px) {
  .donate-btn__hint {
    font-size: 0.7rem;
  }

  .donate-btn__icon {
    width: 36px;
    height: 36px;
  }

  .donate-btn__icon svg {
    width: 20px;
    height: 20px;
  }
}