@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============ Reset ============ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
button { font: inherit; color: inherit; }
input, select { font: inherit; color: inherit; }
a { color: inherit; }

/* ============ Variables (dark = default) ============ */
:root {
  --bg:        #0a0a0a;
  --bg-2:      #131313;
  --bg-elev:   #181818;
  --border:    #262625;
  --border-soft: #1a1a19;
  --text:      #f5f3ee;
  --text-2:    #9b988f;
  --text-3:    #5a574f;
  --accent:    #e2ff34;
  --accent-2:  #b3cc00;
  --accent-ink:#0a0a0a;
  --accent-soft: rgba(226, 255, 52, 0.07);
  --error:     #ff6b5a;
  --success:   #94e89a;

  --serif: 'Instrument Serif', 'Times New Roman', Georgia, serif;
  --mono:  'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}

body[data-theme="light"] {
  --bg:        #f3f1ea;
  --bg-2:      #ebe9e0;
  --bg-elev:   #fafaf3;
  --border:    #cfcabd;
  --border-soft: #e3dfd1;
  --text:      #0a0a0a;
  --text-2:    #5e5b53;
  --text-3:    #8e8b82;
  --accent:    #1f1fff;
  --accent-2:  #1414cc;
  --accent-ink:#f3f1ea;
  --accent-soft: rgba(31, 31, 255, 0.06);
  --error:     #b3261e;
  --success:   #1a7f2f;
}

/* ============ Base ============ */
body {
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.55;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background .3s ease, color .3s ease;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--accent); color: var(--accent-ink); }

/* Grain overlay (SVG noise inline) */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/></svg>");
  opacity: 0.05;
  pointer-events: none;
  z-index: 200;
  mix-blend-mode: overlay;
}
body[data-theme="light"]::before { opacity: 0.08; mix-blend-mode: multiply; }

/* Ambient accent glow (top) */
body::after {
  content: '';
  position: fixed;
  top: -260px; left: 50%;
  transform: translateX(-50%);
  width: 900px; height: 600px;
  background: radial-gradient(closest-side, var(--accent-soft), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ============ Topbar ============ */
.topbar {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 22px 32px;
  border-bottom: 1px solid var(--border);
  gap: 16px;
}
.topbar > :first-child { justify-self: start; }
.topbar > :last-child  { justify-self: end; }

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  user-select: none;
}
.brand .mark {
  font-family: var(--serif);
  font-style: italic;
  font-size: 30px;
  line-height: .8;
  color: var(--accent);
  letter-spacing: -0.04em;
  transform: translateY(2px);
}
.brand .wordmark {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--text);
}

.meta-strip {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-3);
}
.meta-strip .dot {
  width: 3px;
  height: 3px;
  background: var(--text-3);
  display: inline-block;
}

.icon-btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  width: 38px; height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.icon-btn:hover {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.icon-btn:active { transform: translateY(1px); }

/* ============ Container ============ */
.container {
  flex: 1;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 80px 32px 96px;
  position: relative;
  z-index: 1;
}

/* ============ Hero ============ */
.hero { max-width: 920px; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 28px;
}
.hero-eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--accent);
}

.hero-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(56px, 9vw, 124px);
  line-height: 0.95;
  letter-spacing: -0.035em;
  margin: 0 0 28px;
  color: var(--text);
}
.hero-title em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.hero-title .punct { color: var(--text-3); }

.hero-sub {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
  letter-spacing: 0.01em;
  max-width: 540px;
  margin: 0 0 56px;
}

/* ============ Form ============ */
.form {
  border: 1px solid var(--border);
  background: var(--bg-2);
  position: relative;
}

.form-row {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border);
}

.input-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  min-width: 0;
}
.input-prompt {
  font-family: var(--serif);
  font-style: italic;
  color: var(--accent);
  padding: 0 4px 0 22px;
  font-size: 22px;
  line-height: 1;
  user-select: none;
  transform: translateY(1px);
}
#urlInput {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  padding: 22px 18px;
  letter-spacing: -0.005em;
}
#urlInput::placeholder { color: var(--text-3); }

.paste-btn {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-2);
  background: transparent;
  border: 0;
  padding: 0 22px;
  cursor: pointer;
  border-left: 1px solid var(--border);
  transition: color .2s ease, background .2s ease;
}
.paste-btn:hover {
  color: var(--accent-ink);
  background: var(--accent);
}

/* Options */
.options-row {
  display: grid;
  grid-template-columns: 1fr 280px;
  border-bottom: 1px solid var(--border);
}
.options-row > * + * { border-left: 1px solid var(--border); }

.opt { padding: 18px 22px 20px; }
.opt-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-3);
  display: block;
  margin-bottom: 14px;
}

.quality-chips,
.format-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
/* MP3 modunda kalite chip'leri pasif (gorsel sinyal) */
body[data-format="mp3"] .opt-quality {
  opacity: 0.35;
  pointer-events: none;
}
body[data-format="mp3"] .opt-quality::after {
  content: 'MP3 her zaman en yüksek kalitede iner';
  display: block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-top: 10px;
}
.chip {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  padding: 7px 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  transition: all .15s ease;
  letter-spacing: 0.04em;
}
.chip:hover { color: var(--text); border-color: var(--text-2); }
.chip[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  font-weight: 600;
}

/* (Eski audio-toggle yerini format chip'leri aldi) */

/* Submit */
.submit-btn {
  width: 100%;
  background: var(--text);
  color: var(--bg);
  border: 0;
  padding: 24px;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .2s ease, color .2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  position: relative;
}
.submit-btn:hover { background: var(--accent); color: var(--accent-ink); }
.submit-btn:disabled { opacity: .7; cursor: progress; }
.submit-btn .arrow {
  font-family: var(--serif);
  font-style: italic;
  font-size: 24px;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 0;
  transform: translateY(1px);
}
.spinner {
  display: none;
  width: 14px; height: 14px;
  border: 1.5px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
.submit-btn.loading .spinner { display: inline-block; }
.submit-btn.loading .arrow { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ============ Messages ============ */
.message {
  margin: 28px 0 0;
  padding: 16px 22px;
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 13px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--bg-2);
  line-height: 1.55;
}
.message::before {
  content: '!';
  flex-shrink: 0;
  width: 22px; height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--text);
  color: var(--bg);
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  line-height: 0;
  padding-top: 2px;
}
.message.error { border-color: var(--error); color: var(--error); }
.message.error::before { background: var(--error); color: var(--bg); }
.message.hidden { display: none; }

/* ============ Results ============ */
.results { margin: 44px 0 0; }
.results.hidden { display: none; }

.video-head {
  display: flex;
  gap: 22px;
  padding: 22px;
  border: 1px solid var(--border);
  background: var(--bg-2);
  margin-bottom: -1px;
  align-items: flex-start;
}
.video-head img {
  width: 180px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-elev);
  filter: contrast(1.05) saturate(0.95);
}
.video-meta { flex: 1; min-width: 0; padding-top: 4px; }
.video-meta .kicker {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.video-meta .kicker::before {
  content: '';
  width: 18px;
  height: 1px;
  background: var(--accent);
}
.video-meta .video-title {
  font-family: var(--serif);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.15;
  margin: 0;
  color: var(--text);
  letter-spacing: -0.015em;
  font-weight: 400;
}

.result-list { border: 1px solid var(--border); }
.result-item {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 22px 24px;
  border-bottom: 1px solid var(--border);
  transition: background .2s ease;
}
.result-item:last-child { border-bottom: 0; }
.result-item:hover { background: var(--bg-2); }
.result-item:hover .result-num { color: var(--accent); }

.result-num {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.16em;
  transition: color .2s ease;
}
.result-meta { min-width: 0; }
.result-format {
  font-family: var(--serif);
  font-size: 24px;
  color: var(--text);
  line-height: 1.15;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
.result-spec {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  display: flex;
  gap: 10px;
  align-items: center;
}
.result-spec .sep {
  width: 3px; height: 3px;
  background: var(--text-3);
  display: inline-block;
}
.result-spec .silent { color: var(--error); }

.download-btn {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 12px 20px;
  border: 1px solid var(--text);
  color: var(--text);
  background: transparent;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: all .15s ease;
  cursor: pointer;
  white-space: nowrap;
}
.download-btn:hover {
  background: var(--text);
  color: var(--bg);
}
.download-btn .arrow {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  line-height: 0;
  transform: translateY(1px);
}

.tip {
  margin: 18px 0 0;
  padding: 16px 20px 16px 22px;
  border-left: 2px solid var(--accent);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-2);
  line-height: 1.65;
  background: var(--accent-soft);
}
.tip strong {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 16px;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-right: 4px;
}

.remaining-note {
  margin: 18px 0 0;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-3);
  text-align: right;
}
.remaining-note span { color: var(--text); }

/* ============ Manifesto ============ */
.manifesto {
  margin-top: 140px;
  padding-top: 64px;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 64px 56px;
}
.principle { position: relative; }
.principle .index {
  font-family: var(--serif);
  font-style: italic;
  font-size: 56px;
  line-height: 0.9;
  color: var(--accent);
  margin: 0 0 28px;
  letter-spacing: -0.03em;
}
.principle h3 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--text);
  margin: 0 0 14px;
  font-weight: 500;
}
.principle p {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.4;
  color: var(--text-2);
  margin: 0;
  letter-spacing: -0.005em;
}
.principle .accent-line {
  display: inline;
  position: relative;
  color: var(--text);
}
.principle .accent-line::after {
  content: '';
  position: absolute;
  bottom: 1px; left: 0;
  width: 100%; height: 7px;
  background: var(--accent);
  opacity: 0.32;
  z-index: -1;
}

/* ============ Footer ============ */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
  position: relative;
  z-index: 1;
}
.footer .credit em {
  font-family: var(--serif);
  font-style: italic;
  text-transform: none;
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--accent);
  margin: 0 4px;
}
.footer .owner-link {
  text-decoration: none;
  color: inherit;
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  transition: opacity .2s ease;
}
.footer .owner-link em {
  transition: text-shadow .25s ease;
}
.footer .owner-link:hover em {
  text-shadow: 0 0 18px var(--accent-soft), 0 0 28px var(--accent-soft);
}
.footer .owner-link::after {
  content: '↗';
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--accent);
  opacity: .7;
  transform: translateY(-2px);
  transition: transform .2s ease, opacity .2s ease;
}
.footer .owner-link:hover::after {
  opacity: 1;
  transform: translate(2px, -4px);
}

/* ============ Animations (stagger reveal) ============ */
.fade-in {
  opacity: 0;
  transform: translateY(12px);
  animation: rise .9s cubic-bezier(.2,.7,.2,1) forwards;
}
.fade-in:nth-child(1) { animation-delay: .05s; }
.fade-in:nth-child(2) { animation-delay: .18s; }
.fade-in:nth-child(3) { animation-delay: .32s; }
.fade-in:nth-child(4) { animation-delay: .46s; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* ============ Mobile ============ */
@media (max-width: 760px) {
  .topbar {
    grid-template-columns: 1fr auto;
    padding: 18px 20px;
  }
  .topbar .meta-strip { display: none; }
  .container { padding: 48px 20px 64px; }
  .hero-title { font-size: clamp(44px, 13vw, 72px); }
  .hero-sub { font-size: 12.5px; margin-bottom: 40px; }

  .options-row { grid-template-columns: 1fr; }
  .options-row > * + * { border-left: 0; border-top: 1px solid var(--border); }

  .video-head { flex-direction: column; gap: 16px; padding: 18px; }
  .video-head img { width: 100%; }
  .video-meta { padding-top: 0; }

  .result-item {
    grid-template-columns: 36px 1fr;
    padding: 18px 18px;
    gap: 4px 12px;
  }
  .result-item .download-btn {
    grid-column: 2;
    justify-self: start;
    margin-top: 12px;
  }
  .result-format { font-size: 19px; }

  .manifesto {
    grid-template-columns: 1fr;
    gap: 48px;
    margin-top: 88px;
    padding-top: 48px;
  }
  .principle .index { font-size: 48px; margin-bottom: 20px; }
  .principle p { font-size: 17px; }

  .footer {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 20px;
  }

  /* iOS zoom önle */
  #urlInput { font-size: 16px; padding: 20px 14px; }
  .input-prompt { padding-left: 18px; font-size: 18px; }
  .paste-btn { padding: 0 16px; font-size: 10.5px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}