/* ── Reset & base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #1C1917;
  --surface:   #28231F;
  --border:    #3A342E;
  --text:      #EDE9E0;
  --muted:     #A8998F;
  --silent:    #5C534C;
  --accent:    #F0C674;
  --highlight: #F0C674;
  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans:  'DM Sans', -apple-system, sans-serif;
  --max: 680px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg:        #F5F2EC;
    --surface:   #EDE9E0;
    --border:    #D8D2C8;
    --text:      #1C1917;
    --muted:     #78716C;
    --silent:    #C4BAB0;
    --accent:    #C8922A;
    --highlight: #F0C674;
  }
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
}

/* ── Sticky header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.site-header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 1px 12px rgba(0,0,0,0.04);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--accent);
}

.brand-mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.wordmark {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

/* ── Layout ── */
main { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }

/* ── Entrance animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Hero ── */
.hero {
  padding: 5rem 0 4.5rem;
  text-align: center;
  animation: fadeUp 0.55s ease both;
}

.use-cases {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 3.75rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-headline em {
  color: var(--accent);
  font-style: italic;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

/* ── App Store badge ── */
.cta-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  animation: fadeUp 0.55s 0.15s ease both;
}

.appstore-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--text);
  color: var(--bg);
  padding: 0.65rem 1.25rem;
  border-radius: 10px;
  text-decoration: none;
  opacity: 0.45;
  cursor: default;
  pointer-events: none;
  user-select: none;
}

.badge-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  text-align: left;
}

.badge-sub {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.badge-main {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.trust-line {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.01em;
}

/* ── Section title ── */
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 10vw, 6.5rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1;
  text-transform: none;
  color: var(--text);
  margin-bottom: 1.25rem;
}

/* ── Phases ── */
.phase {
  padding: 5rem 0;
  border-top: 1px solid var(--border);
}

.phase-body {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

/* ── App card mockups ── */
.app-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem;
  margin-bottom: 2.5rem;
}

.app-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.app-card-source {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--silent);
}

.app-card-tag {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
  opacity: 0.7;
}

.app-card-complete {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ── Rec indicator ── */
.rec-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  color: #E05252;
  letter-spacing: 0.06em;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.rec-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #E05252;
  animation: blink 1.2s ease-in-out infinite;
}

/* ── Speak / Recording screen ── */
.rec-screen {
  text-align: center;
}

.rec-screen .app-card-header {
  text-align: left;
}

.rec-timer {
  font-family: var(--font-sans);
  font-size: 3.5rem;
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--text);
  margin: 1.75rem 0 1.5rem;
  font-variant-numeric: tabular-nums;
}

.rec-stop-area {
  display: flex;
  justify-content: center;
  padding: 1.25rem 0 0.5rem;
}

.rec-stop-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid #E05252;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rec-stop-square {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  background: #E05252;
}

.speak-wave {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 56px;
  padding-top: 0.25rem;
}

@keyframes wave-anim {
  0%, 100% { height: 3px; }
  50%       { height: var(--h); }
}

.speak-wave span {
  flex: 1;
  max-width: 5px;
  border-radius: 3px;
  background: var(--accent);
  height: var(--h);
  opacity: 0.55;
  animation: wave-anim 1.1s ease-in-out infinite;
  animation-delay: var(--d);
}

/* ── Memorize / Library ── */
.lib-list {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  margin-top: 0.5rem;
}

.lib-item {}

.lib-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.4rem;
}

.lib-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--text);
}

.lib-pct {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.done-pct {
  color: var(--accent);
}

.lib-track {
  height: 4px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.lib-bar {
  height: 100%;
  width: var(--pct);
  background: var(--accent);
  border-radius: 4px;
  opacity: 0.85;
}

/* Complete stats */
.complete-track {
  height: 3px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 0.85rem;
}

.complete-bar {
  height: 100%;
  width: 100%;
  background: var(--accent);
  border-radius: 3px;
}

.complete-stats {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ── Demo ── */
.demo {
  padding: 4rem 0;
}

.demo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem 1.75rem 1.5rem;
}

.demo-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.demo-dots {
  display: flex;
  gap: 7px;
  align-items: center;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.3s, transform 0.3s;
}

.dot.active {
  background: var(--accent);
  transform: scale(1.2);
}

.demo-status {
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.demo-source {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--silent);
  margin-bottom: 0.75rem;
}

.demo-passage {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 2.5vw, 1.3rem);
  line-height: 1.9;
  color: var(--text);
  letter-spacing: -0.01em;
}

.word {
  display: inline-block;
  border-radius: 3px;
  padding: 0 2px;
  transition: opacity 0.4s ease, background 0.25s ease, color 0.25s ease;
}

.word.silent {
  opacity: 0.18;
}

.word.active {
  background: var(--highlight);
  color: var(--text);
  opacity: 1;
}

.word.silent.active {
  background: var(--border);
  opacity: 0.5;
}

.demo-track {
  margin-top: 1.4rem;
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.demo-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.35s linear;
}

.demo-hint {
  margin-top: 0.9rem;
  font-size: 0.78rem;
  color: var(--muted);
  min-height: 1.2em;
}

/* ── Science ── */
.science {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
}

.science-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.science-body p {
  font-size: 1.2rem;
  color: var(--muted);
  line-height: 1.8;
  max-width: 580px;
}

.science-body em {
  color: var(--text);
  font-style: italic;
  font-family: var(--font-serif);
}


/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 2rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 4rem;
}

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

.esv-attribution {
  margin-top: 1rem;
  font-size: 0.68rem;
  color: var(--silent);
  line-height: 1.6;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Focus styles (keyboard nav) ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Mobile ── */
@media (max-width: 520px) {
  main { padding: 0 1.25rem; }
  .hero { padding: 3.5rem 0 3rem; }
  .hero-headline { font-size: 2.2rem; }
  .hero-sub { font-size: 0.95rem; }
  .demo-card { padding: 1.25rem 1.25rem 1.1rem; }
  .demo-passage { font-size: 1.2rem; }
  .science-body p { font-size: 0.95rem; }
}