/* ============================================================
   ThirtyPin — stylesheet
   Early 2000s Apple aesthetic · EB Garamond headings · Warm cream
   ============================================================ */

/* === ROOT VARIABLES === */
:root {
  --color-bg:        #FAF7F2;
  --color-bg-card:   #FFFFFF;
  --color-bg-dark:   #1A1A1A;
  --color-bg-mid:    #F2EDE5;

  --color-blue:      #0A7AFF;
  --color-blue-dark: #005FCC;
  --color-amber:     #C97C10;
  --color-amber-lt:  #F5A623;

  --color-text:      #1A1A1A;
  --color-text-2:    #555550;
  --color-text-3:    #8A8A82;
  --color-border:    #E4DDD2;
  --color-border-lt: #EDE8E0;

  --font-serif:  'EB Garamond', Georgia, 'Times New Roman', serif;
  --font-sans:   'Helvetica Neue', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   24px;
  --radius-full: 9999px;

  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.05);
  --shadow-lg:   0 16px 48px rgba(0,0,0,0.14), 0 4px 12px rgba(0,0,0,0.08);
  --shadow-xl:   0 32px 80px rgba(0,0,0,0.22), 0 8px 24px rgba(0,0,0,0.12);

  --nav-h: 64px;
  --container: 1100px;
  --gap: 24px;
}

/* === RESET & BASE === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; font: inherit; border: none; background: none; }
input, textarea, select { font: inherit; }

/* === LAYOUT === */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gap);
}

section {
  padding: 96px 0;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 3.8rem); }
h2 { font-size: clamp(1.9rem, 3.5vw, 2.75rem); }
h3 { font-size: 1.4rem; }

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-amber);
  margin-bottom: 14px;
}

.section-title {
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-2);
  max-width: 56ch;
  line-height: 1.65;
  margin-bottom: 56px;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-blue);
  color: #fff;
  box-shadow: 0 2px 8px rgba(10, 122, 255, 0.35);
}

.btn-primary:hover {
  background: var(--color-blue-dark);
  box-shadow: 0 4px 16px rgba(10, 122, 255, 0.45);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--color-text-3);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  color: var(--color-text-2);
  padding: 12px 8px;
}

.btn-ghost:hover {
  color: var(--color-text);
}

.btn-amber {
  background: var(--color-amber);
  color: #fff;
  box-shadow: 0 2px 8px rgba(201, 124, 16, 0.35);
}

.btn-amber:hover {
  background: #a8650c;
  transform: translateY(-1px);
}

/* === NAVIGATION === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 100;
  background: rgba(250, 247, 242, 0.85);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-lt);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.nav.scrolled {
  background: rgba(250, 247, 242, 0.96);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  height: var(--nav-h);
  gap: 32px;
}

/* Logo */
.logo {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--color-text);
  flex-shrink: 0;
}

.logo-pin {
  color: var(--color-amber);
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-2);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  transition: color 0.15s, background 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
  background: var(--color-border-lt);
}

.nav-cta {
  flex-shrink: 0;
  padding: 9px 20px;
  font-size: 0.88rem;
}

/* Mobile hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
  padding: 16px var(--gap);
  z-index: 99;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
  font-size: 1rem;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

.mobile-nav a:hover { background: var(--color-bg); }

/* === HERO === */
.hero {
  padding-top: calc(var(--nav-h) + 80px);
  padding-bottom: 96px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 55% 60% at 75% 55%, rgba(10, 122, 255, 0.055), transparent),
    radial-gradient(ellipse 40% 40% at 20% 70%, rgba(201, 124, 16, 0.045), transparent),
    var(--color-bg);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 420px;
  align-items: center;
  gap: 64px;
  min-height: 560px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-3);
  background: var(--color-bg-mid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 5px 14px;
  margin-bottom: 28px;
}

.hero-label-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-amber-lt);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.75); }
}

.hero-title {
  margin-bottom: 24px;
  color: var(--color-text);
}

.hero-title em {
  font-style: italic;
  color: var(--color-text-2);
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--color-text-2);
  line-height: 1.7;
  max-width: 48ch;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.hero-note {
  font-size: 0.8rem;
  color: var(--color-text-3);
}

/* === iPod ILLUSTRATION === */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.ipod-wrap {
  position: relative;
  transform: perspective(1200px) rotateY(-6deg) rotateX(2deg);
  transform-style: preserve-3d;
  transition: transform 0.6s ease;
}

.ipod-wrap:hover {
  transform: perspective(1200px) rotateY(-2deg) rotateX(1deg);
}

/* Glow behind iPod */
.ipod-glow {
  position: absolute;
  inset: -20%;
  background: radial-gradient(ellipse 60% 50% at 50% 60%, rgba(10, 122, 255, 0.12), transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.ipod {
  position: relative;
  z-index: 1;
  width: 220px;
  height: 380px;
  background: linear-gradient(160deg, #FAFAFA 0%, #D4D4D4 100%);
  border-radius: 38px;
  box-shadow:
    var(--shadow-xl),
    inset 0 1px 1px rgba(255,255,255,0.9),
    inset 0 -1px 1px rgba(0,0,0,0.08);
  padding: 18px 16px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

/* Plastic sheen */
.ipod::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 38px;
  background: linear-gradient(160deg, rgba(255,255,255,0.55) 0%, transparent 50%);
  pointer-events: none;
}

/* Screen */
.ipod-screen {
  width: 100%;
  aspect-ratio: 4/3;
  background: #0A0A0A;
  border-radius: 10px;
  overflow: hidden;
  box-shadow:
    inset 0 0 0 1.5px rgba(0,0,0,0.5),
    inset 0 1px 0 rgba(255,255,255,0.06);
  flex-shrink: 0;
}

/* iPod "Now Playing" screen content */
.now-playing {
  height: 100%;
  padding: 9px 10px;
  color: #fff;
  font-family: var(--font-sans);
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.np-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 8px;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.05em;
}

.np-header-title {
  font-size: 9px;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.np-art {
  width: 52px;
  height: 52px;
  margin: 4px auto 0;
  border-radius: 4px;
  background: linear-gradient(135deg, #0A7AFF 0%, #00C8E8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 3px 10px rgba(0,0,0,0.5);
}

.np-art-note {
  font-size: 22px;
  line-height: 1;
}

.np-track {
  text-align: center;
  font-size: 10.5px;
  font-weight: 600;
  color: rgba(255,255,255,0.95);
  line-height: 1.3;
}

.np-artist {
  text-align: center;
  font-size: 9px;
  color: rgba(255,255,255,0.5);
}

.np-progress-track {
  margin-top: 4px;
  height: 2px;
  background: rgba(255,255,255,0.15);
  border-radius: 1px;
  overflow: hidden;
}

.np-progress-fill {
  height: 100%;
  width: 38%;
  background: rgba(255,255,255,0.9);
  border-radius: 1px;
  animation: progress-anim 12s linear infinite;
}

@keyframes progress-anim {
  from { width: 10%; }
  to   { width: 90%; }
}

.np-times {
  display: flex;
  justify-content: space-between;
  font-size: 7.5px;
  color: rgba(255,255,255,0.4);
  margin-top: 2px;
}

/* Click wheel area */
.ipod-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
}

.ipod-wheel {
  width: 158px;
  height: 158px;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 35%, #E2E2E2 0%, #C0C0C0 55%, #A8A8A8 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.7),
    inset 0 -1px 0 rgba(0,0,0,0.15),
    0 2px 8px rgba(0,0,0,0.25);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.wheel-center {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #FFFFFF 0%, #DEDEDE 100%);
  box-shadow:
    0 2px 5px rgba(0,0,0,0.25),
    inset 0 1px 0 rgba(255,255,255,0.9);
  z-index: 2;
}

.wheel-label {
  position: absolute;
  font-size: 7.5px;
  font-weight: 600;
  color: #5A5A5A;
  letter-spacing: 0.04em;
  line-height: 1;
  pointer-events: none;
}

.wheel-label.top    { top: 13px;   left: 50%; transform: translateX(-50%); }
.wheel-label.bottom { bottom: 13px; left: 50%; transform: translateX(-50%); font-size: 10px; }
.wheel-label.left   { left: 11px;  top: 50%;  transform: translateY(-50%); font-size: 10px; }
.wheel-label.right  { right: 10px; top: 50%;  transform: translateY(-50%); font-size: 10px; }

/* === PROBLEM BAND === */
.problem-band {
  padding: 72px 0;
  background: var(--color-bg-dark);
  color: #fff;
}

.problem-quote {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  font-weight: 400;
  line-height: 1.5;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  color: rgba(255,255,255,0.7);
}

.problem-quote em {
  font-style: italic;
  color: rgba(255,255,255,0.95);
}

/* === FEATURES === */
.features {
  background: var(--color-bg);
}

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

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-lt);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s;
}

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

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 20px;
  flex-shrink: 0;
}

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--color-text-2);
  line-height: 1.65;
}

/* === HOW IT WORKS === */
.how-it-works {
  background: var(--color-bg-mid);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  position: relative;
}

/* Connecting line between steps */
.steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(16.67% + 12px);
  right: calc(16.67% + 12px);
  height: 1px;
  background: linear-gradient(90deg,
    var(--color-border) 0%,
    var(--color-amber) 50%,
    var(--color-border) 100%
  );
  pointer-events: none;
}

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

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-bg-card);
  border: 1.5px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-amber);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.step h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
}

.step p {
  font-size: 0.92rem;
  color: var(--color-text-2);
  line-height: 1.65;
}

/* === COMPATIBILITY === */
.compatibility {
  background: var(--color-bg);
}

.device-categories {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.device-category {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-lt);
  border-radius: var(--radius-md);
  padding: 24px 28px;
}

.device-category h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-lt);
}

.device-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.device-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--color-text-2);
}

.device-item::before {
  content: '';
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(10, 122, 255, 0.12);
  border: 1.5px solid rgba(10, 122, 255, 0.4);
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 10'%3E%3Cpath d='M2 5l2.5 2.5L8 3' stroke='%230A7AFF' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

/* === CTA / NOTIFY BAND === */
.cta-band {
  background: var(--color-bg-dark);
  color: #fff;
  text-align: center;
}

.cta-band h2 {
  color: #fff;
  margin-bottom: 14px;
}

.cta-band p {
  color: rgba(255,255,255,0.6);
  font-size: 1.05rem;
  margin-bottom: 36px;
  max-width: 52ch;
  margin-left: auto;
  margin-right: auto;
}

.notify-form {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.notify-form input[type="email"] {
  padding: 12px 20px;
  border-radius: var(--radius-full);
  border: 1.5px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 0.95rem;
  width: 280px;
  max-width: 100%;
  outline: none;
  transition: border-color 0.15s;
}

.notify-form input[type="email"]::placeholder { color: rgba(255,255,255,0.35); }

.notify-form input[type="email"]:focus {
  border-color: rgba(255,255,255,0.45);
}

.cta-note {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

/* === FOOTER === */
.footer {
  background: var(--color-bg-dark);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 48px 0 32px;
  color: rgba(255,255,255,0.6);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  color: rgba(255,255,255,0.9);
  display: block;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.45);
  max-width: 28ch;
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 14px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-col a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.55);
  transition: color 0.15s;
}

.footer-col a:hover { color: rgba(255,255,255,0.95); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.3);
}

.footer-bottom a {
  color: rgba(255,255,255,0.45);
  transition: color 0.15s;
}

.footer-bottom a:hover { color: rgba(255,255,255,0.9); }

/* === PAGE HEADER (inner pages) === */
.page-header {
  padding-top: calc(var(--nav-h) + 64px);
  padding-bottom: 64px;
  background:
    radial-gradient(ellipse 60% 70% at 80% 50%, rgba(201, 124, 16, 0.045), transparent),
    var(--color-bg);
  border-bottom: 1px solid var(--color-border-lt);
}

.page-header .eyebrow { margin-bottom: 10px; }

.page-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 14px;
}

.page-header p {
  font-size: 1.05rem;
  color: var(--color-text-2);
  max-width: 52ch;
  line-height: 1.7;
}

/* === CHANGELOG PAGE === */
.changelog-page {
  padding: 80px 0 120px;
}

.changelog-timeline {
  max-width: 720px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.changelog-entry {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  position: relative;
  padding-bottom: 56px;
}

.changelog-entry:last-child { padding-bottom: 0; }

/* Vertical line */
.changelog-entry::after {
  content: '';
  position: absolute;
  left: 139px;
  top: 28px;
  bottom: 0;
  width: 1px;
  background: var(--color-border);
}

.changelog-entry:last-child::after { display: none; }

.changelog-meta {
  text-align: right;
  padding-top: 4px;
  position: relative;
}

/* Circle on the line */
.changelog-meta::after {
  content: '';
  position: absolute;
  right: -5px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  z-index: 1;
}

.changelog-entry.latest .changelog-meta::after {
  background: var(--color-amber);
  border-color: var(--color-amber);
}

.version-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text-3);
  font-family: var(--font-sans);
  letter-spacing: 0.02em;
}

.changelog-date {
  font-size: 0.78rem;
  color: var(--color-text-3);
  margin-top: 4px;
  display: block;
}

.changelog-content h2 {
  font-size: 1.4rem;
  font-weight: 500;
  margin-bottom: 16px;
}

.changelog-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.badge-beta    { background: rgba(201,124,16,0.12); color: var(--color-amber); }
.badge-new     { background: rgba(10,122,255,0.1);  color: var(--color-blue);  }
.badge-fix     { background: rgba(34,197,94,0.1);   color: #16a34a; }
.badge-changed { background: rgba(168,85,247,0.1);  color: #7c3aed; }

.changelog-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.changelog-list li {
  display: flex;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--color-text-2);
  line-height: 1.55;
}

.changelog-list li::before {
  content: '–';
  color: var(--color-text-3);
  flex-shrink: 0;
}

.changelog-section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-3);
  margin-top: 20px;
  margin-bottom: 10px;
}

/* === DOCS / FAQ PAGE === */
.docs-page {
  padding: 80px 0 120px;
}

.docs-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 56px;
  align-items: start;
}

.docs-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
}

.docs-sidebar h4 {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-3);
  margin-bottom: 12px;
}

.docs-sidebar ul {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.docs-sidebar a {
  font-size: 0.9rem;
  color: var(--color-text-2);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  display: block;
  transition: background 0.15s, color 0.15s;
}

.docs-sidebar a:hover {
  background: var(--color-bg-mid);
  color: var(--color-text);
}

.docs-section {
  margin-bottom: 56px;
}

.docs-section h2 {
  font-size: 1.6rem;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border-lt);
}

/* FAQ accordion using details/summary */
.faq-item {
  border: 1px solid var(--color-border-lt);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 16px 20px;
  font-weight: 500;
  font-size: 0.97rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  list-style: none;
  user-select: none;
  transition: background 0.15s;
}

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

.faq-item summary:hover { background: var(--color-bg); }

.faq-item summary::after {
  content: '+';
  font-size: 1.2rem;
  font-weight: 300;
  color: var(--color-text-3);
  flex-shrink: 0;
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item[open] summary {
  border-bottom: 1px solid var(--color-border-lt);
}

.faq-body {
  padding: 16px 20px;
  font-size: 0.93rem;
  color: var(--color-text-2);
  line-height: 1.7;
}

.faq-body p + p { margin-top: 10px; }
.faq-body ul { padding-left: 20px; list-style: disc; margin-top: 8px; }
.faq-body li { margin-bottom: 4px; }
.faq-body code {
  font-family: 'SF Mono', 'Fira Mono', monospace;
  font-size: 0.85em;
  background: var(--color-bg-mid);
  padding: 1px 6px;
  border-radius: 4px;
}

/* === CONTACT PAGE === */
.contact-page {
  padding: 80px 0 120px;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 64px;
  align-items: start;
}

.contact-form-wrap h2 {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.contact-form-wrap > p {
  color: var(--color-text-2);
  margin-bottom: 32px;
  font-size: 0.95rem;
  line-height: 1.65;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 7px;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  color: var(--color-text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(10, 122, 255, 0.12);
}

.form-group textarea {
  min-height: 130px;
  resize: vertical;
}

.form-success {
  display: none;
  padding: 16px 20px;
  background: rgba(34,197,94,0.08);
  border: 1px solid rgba(34,197,94,0.3);
  border-radius: var(--radius-sm);
  color: #15803d;
  font-size: 0.92rem;
  margin-top: 12px;
}

.contact-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: calc(var(--nav-h) + 24px);
}

.contact-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-lt);
  border-radius: var(--radius-md);
  padding: 24px;
}

.contact-card h3 {
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.contact-card p {
  font-size: 0.88rem;
  color: var(--color-text-2);
  line-height: 1.65;
  margin-bottom: 16px;
}

/* === SCROLL ANIMATIONS === */
.fade-up {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: none;
}

/* Staggered delay for grid children */
.feature-grid .feature-card:nth-child(1) { transition-delay: 0.05s; }
.feature-grid .feature-card:nth-child(2) { transition-delay: 0.10s; }
.feature-grid .feature-card:nth-child(3) { transition-delay: 0.15s; }
.feature-grid .feature-card:nth-child(4) { transition-delay: 0.20s; }
.feature-grid .feature-card:nth-child(5) { transition-delay: 0.25s; }
.feature-grid .feature-card:nth-child(6) { transition-delay: 0.30s; }

.steps .step:nth-child(1) { transition-delay: 0.05s; }
.steps .step:nth-child(2) { transition-delay: 0.15s; }
.steps .step:nth-child(3) { transition-delay: 0.25s; }

/* === RESPONSIVE === */
@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }

  .hero-desc { max-width: none; margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { order: -1; }
  .ipod-wrap { transform: none !important; }

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

  .footer-inner { grid-template-columns: 1fr 1fr; }

  .contact-layout { grid-template-columns: 1fr; }
  .contact-sidebar { position: static; }

  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar { position: static; display: none; }
}

@media (max-width: 700px) {
  section { padding: 64px 0; }

  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }

  .feature-grid { grid-template-columns: 1fr; }

  .steps {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .steps::before { display: none; }

  .device-categories { grid-template-columns: 1fr; }

  .changelog-entry {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .changelog-entry::after { display: none; }
  .changelog-meta { text-align: left; }
  .changelog-meta::after { display: none; }

  .footer-inner { grid-template-columns: 1fr; gap: 28px; }

  .notify-form { flex-direction: column; align-items: center; }
  .notify-form input[type="email"] { width: 100%; max-width: 340px; }
}

@media (max-width: 460px) {
  h1 { font-size: 2.1rem; }
  h2 { font-size: 1.7rem; }
}