/* ────────────────────────────────────────────────────────────────
   Threadown — styles.css
   Dark utilitarian redesign. Mobile-first, scales up at 720 / 1024.
   ──────────────────────────────────────────────────────────────── */

:root {
  --bg: #0a0a0a;
  --bg-1: #0f0f0f;
  --bg-2: #161616;
  --bg-3: #1c1c1c;
  --line: #232323;
  --line-2: #2c2c2c;
  --fg: #fafafa;
  --fg-2: #b3b3b3;
  --fg-3: #707070;
  --fg-4: #4a4a4a;
  --accent: #34d399;
  --accent-fg: #052e1e;
  --danger: #ef4444;
  --r: 8px;
  --maxw: 1180px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.5;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Type helpers */
.mono { font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace; }
.serif { font-family: 'Instrument Serif', Georgia, serif; font-weight: 400; }
.italic { font-style: italic; }
.accent { color: var(--accent); }

a { color: inherit; }

/* SVG icons share a default size + style */
.i {
  width: 16px; height: 16px;
  fill: none; stroke: currentColor;
  stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round;
  flex: 0 0 auto;
}
.i--sm { width: 12px; height: 12px; }

/* ─── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 36px; padding: 0 14px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background: transparent;
  color: var(--fg);
  font: inherit; font-size: 13px;
  text-decoration: none;
  cursor: pointer;
  transition: background .12s, border-color .12s, transform .08s, opacity .12s;
}
.btn:hover { background: var(--bg-2); border-color: #3a3a3a; }
.btn:active { transform: translateY(1px); }
.btn--ghost { background: var(--bg-2); }
.btn--icon { padding: 0; width: 36px; justify-content: center; }
.btn--primary {
  height: 40px; padding: 0 18px;
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
  font-weight: 600; font-size: 14px;
}
.btn--primary:hover { background: var(--accent); filter: brightness(1.05); }
.btn--primary:disabled { opacity: 0.45; cursor: not-allowed; }
.btn--primary-light {
  background: var(--fg); color: var(--bg); border-color: var(--fg);
}
.btn--primary-light:hover { background: #fff; }

/* ─── Nav ─────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 10, 10, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.nav__inner {
  max-width: var(--maxw); margin: 0 auto;
  height: 60px;
  padding: 0 18px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.nav__links { display: none; gap: 24px; font-size: 13px; color: var(--fg-2); }
.nav__links a { text-decoration: none; transition: color .12s; }
.nav__links a:hover { color: var(--fg); }
.nav__actions { display: flex; gap: 8px; align-items: center; }

.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--fg); }
.brand__mark { width: 22px; height: 22px; }
.brand__word { font-weight: 600; font-size: 16px; letter-spacing: -0.01em; }
.brand__dot { color: var(--accent); }

@media (min-width: 720px) {
  .nav__inner { padding: 0 32px; gap: 32px; }
  .nav__links { display: flex; }
}

/* ─── Hero ────────────────────────────────────────────────────── */
.hero {
  max-width: 880px;
  margin: 0 auto;
  padding: 36px 18px 28px;
  text-align: center;
}
@media (min-width: 720px) { .hero { padding: 72px 32px 48px; } }

.status {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 5px 12px 5px 5px;
  margin-bottom: 22px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: var(--bg-1);
  font-size: 12px; color: var(--fg-2);
  text-decoration: none;
}
.status__pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 9px; border-radius: 999px;
  background: rgba(52, 211, 153, 0.1);
  color: var(--accent);
  font-size: 11px; font-weight: 500;
}
.status__dot {
  width: 6px; height: 6px; border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.18);
}
.status__text { display: none; }
@media (min-width: 480px) { .status__text { display: inline; } }

.hero__title {
  margin: 0;
  font-size: 36px;
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 600;
  text-wrap: balance;
}
@media (min-width: 720px) {
  .hero__title { font-size: 64px; line-height: 1.02; letter-spacing: -0.035em; }
}

.hero__sub {
  margin: 14px auto 0;
  max-width: 560px;
  color: var(--fg-2);
  font-size: 15px;
}
@media (min-width: 720px) { .hero__sub { margin-top: 20px; font-size: 17px; } }

/* ─── Downloader (input row) ──────────────────────────────────── */
.downloader {
  position: relative;
  margin-top: 28px;
  padding: 8px;
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
  background: var(--bg-1);
  border: 1px solid var(--line-2);
  border-radius: calc(var(--r) + 4px);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.03) inset,
    0 20px 60px -20px rgba(0,0,0,0.6);
}
@media (min-width: 720px) { .downloader { margin-top: 36px; flex-wrap: nowrap; } }

.downloader__icon {
  display: inline-flex; padding-left: 8px;
  color: var(--fg-3);
}
.downloader__input {
  flex: 1 1 100%;
  min-width: 0;
  background: transparent; border: 0; outline: 0;
  color: var(--fg);
  font-size: 13px;
  padding: 12px 0;
}
.downloader__input::placeholder { color: var(--fg-4); }
@media (min-width: 720px) {
  .downloader__input { flex: 1; font-size: 14px; }
}
.downloader .btn--primary { flex: 1 0 100%; justify-content: center; }
@media (min-width: 720px) {
  .downloader .btn--primary { flex: 0 0 auto; }
}

/* Trust row */
.trust {
  list-style: none; padding: 0;
  margin: 16px 0 0;
  display: flex; flex-wrap: wrap; gap: 12px 18px;
  justify-content: center;
  color: var(--fg-3); font-size: 12px;
}
.trust li { display: inline-flex; align-items: center; gap: 6px; }
.trust__dot { color: var(--accent); }

/* ─── Demo state switcher ─────────────────────────────────────── */
.demo {
  margin-top: 28px;
  display: flex; align-items: center; gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.demo__label { font-size: 11px; color: var(--fg-4); text-transform: uppercase; letter-spacing: 0.06em; }
.demo__group {
  display: inline-flex; gap: 4px; padding: 4px;
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--r);
}
.demo__group button {
  padding: 6px 12px; background: transparent; border: 0; color: var(--fg-3);
  font: inherit; font-size: 12px; font-weight: 500; cursor: pointer;
  border-radius: 6px; transition: background .12s, color .12s;
}
.demo__group button:hover { color: var(--fg); }
.demo__group button.is-active { background: var(--fg); color: var(--bg); }

/* ─── Result panel ────────────────────────────────────────────── */
.result { margin-top: 24px; }
@media (min-width: 720px) { .result { margin-top: 40px; } }

.shell {
  border: 1px solid var(--line);
  border-radius: calc(var(--r) + 4px);
  background: var(--bg-1);
  padding: 20px;
}
.shell--dashed { border-style: dashed; border-color: var(--line-2); text-align: center; }
.shell--error {
  border-color: rgba(239, 68, 68, 0.35);
  background: linear-gradient(180deg, rgba(239, 68, 68, 0.05), transparent), var(--bg-1);
}

/* Empty */
.empty__line {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--fg-3);
}
.empty__line .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--fg-4); }
.empty__hint { margin: 6px auto 0; max-width: 380px; font-size: 13px; color: var(--fg-3); }

/* Loading */
.loading__row { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; color: var(--fg-2); font-size: 13px; }
.loading__grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 600px) { .loading__grid { grid-template-columns: 1fr 1fr 1fr; } }
.shim {
  background: linear-gradient(90deg, var(--bg-2) 0, var(--bg-3) 50%, var(--bg-2) 100%);
  background-size: 400px 100%;
  animation: td-shimmer 1.4s linear infinite;
  border-radius: var(--r);
}
.shim--card { aspect-ratio: 4/5; }
.shim--text { height: 16px; margin-top: 14px; width: 60%; }
@keyframes td-shimmer { 0% { background-position: -200px 0; } 100% { background-position: 200px 0; } }

/* Spinner */
.spinner {
  width: 14px; height: 14px;
  border-radius: 999px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  animation: td-spin 0.8s linear infinite;
  display: inline-block;
}
@keyframes td-spin { to { transform: rotate(360deg); } }
.btn .spinner { color: currentColor; }

/* Error */
.err { display: flex; gap: 14px; align-items: flex-start; }
.err__icon {
  width: 36px; height: 36px;
  border-radius: var(--r);
  background: rgba(239, 68, 68, 0.12);
  color: var(--danger);
  display: flex; align-items: center; justify-content: center;
  flex: 0 0 auto;
}
.err__title { font-weight: 600; font-size: 15px; }
.err__body { margin: 4px 0 14px; color: var(--fg-2); font-size: 13.5px; }
.err__actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* Loaded */
.loaded__head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 4px 12px;
  flex-wrap: wrap; gap: 8px;
}
.poster { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--fg-2); }
.avatar {
  width: 32px; height: 32px; border-radius: 999px;
  background: linear-gradient(135deg, #2a2a2a, #1a1a1a);
  border: 1px solid var(--line-2);
  display: flex; align-items: center; justify-content: center;
  color: var(--fg-3); font-size: 12px; font-weight: 600;
}
.poster__name { color: var(--fg); font-weight: 500; line-height: 1.2; }
.poster__meta { font-size: 11px; color: var(--fg-3); }

.cards { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 600px) { .cards { grid-template-columns: 1fr 1fr 1fr; gap: 12px; } }

.card {
  border: 1px solid var(--line);
  border-radius: calc(var(--r) + 2px);
  background: var(--bg-1);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .15s, border-color .15s;
}
.card:hover { border-color: var(--line-2); transform: translateY(-1px); }
.card__thumb {
  position: relative;
  aspect-ratio: 4/5;
  background: repeating-linear-gradient(135deg, var(--bg-2) 0 12px, var(--bg-3) 12px 24px);
  display: flex; align-items: center; justify-content: center;
}
.card__thumb img {
    width: 100%;
}
.card__placeholder {
  font-family: 'JetBrains Mono', monospace;
  color: var(--fg-4); font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase;
}
.card__play {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
.card__play span {
  width: 44px; height: 44px; border-radius: 999px;
  background: rgba(10,10,10,0.7);
  backdrop-filter: blur(6px);
  border: 1px solid var(--line-2);
  display: flex; align-items: center; justify-content: center;
}
.card__play svg { width: 14px; height: 14px; fill: var(--fg); stroke: none; margin-left: 2px; }
.card__badge {
  position: absolute; top: 10px; left: 10px;
  font-size: 10.5px; font-weight: 600; letter-spacing: 0.03em;
  padding: 3px 8px; border-radius: 999px;
  background: var(--accent); color: var(--accent-fg);
}
.card__foot { padding: 12px; border-top: 1px solid var(--line); }
.card__title { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 500; }
.card__meta { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--fg-3); margin-top: 4px; }
.card__btn {
  margin-top: 12px; width: 100%;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 36px; padding: 0 12px;
  background: var(--bg-2); color: var(--fg);
  border: 1px solid var(--line-2); border-radius: var(--r);
  font: inherit; font-size: 13px; font-weight: 500; cursor: pointer;
  transition: background .12s;
}
.card__btn:hover { background: var(--bg-3); }

/* fade-up entrance */
.fadeup { animation: td-fadeup .35s cubic-bezier(.2,.7,.3,1) both; }
@keyframes td-fadeup { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ─── Sections ────────────────────────────────────────────────── */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 18px;
}
@media (min-width: 720px) { .section { padding: 64px 32px; } }

.section__head { text-align: center; max-width: 640px; margin: 0 auto; }
.section__head--left { text-align: left; margin: 0; }
.eyebrow {
  font-size: 12px; color: var(--accent); letter-spacing: 0.08em;
  text-transform: uppercase; margin-bottom: 14px;
}
.section__title {
  margin: 0;
  font-size: 28px; line-height: 1.1; letter-spacing: -0.025em;
  font-weight: 600;
  text-wrap: balance;
}
@media (min-width: 720px) { .section__title { font-size: 38px; } }

/* ─── Steps ───────────────────────────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 28px;
}
@media (min-width: 720px) {
  .steps { grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin-top: 36px; }
}
.step {
  position: relative;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: calc(var(--r) + 4px);
  background: var(--bg-1);
  display: flex; flex-direction: column; gap: 12px;
  min-height: 220px;
}
.step__row { display: flex; align-items: center; justify-content: space-between; }
.step__num { color: var(--accent); font-size: 12px; font-weight: 500; letter-spacing: 0.05em; }
.step__glyph { color: var(--fg-3); }
.step h3 { margin: 0; font-size: 18px; font-weight: 600; letter-spacing: -0.01em; }
.step p { margin: 0; color: var(--fg-2); font-size: 14px; }
.step__fig {
  margin-top: auto;
  height: 84px;
  border-radius: var(--r);
  border: 1px solid var(--line);
  background: var(--bg-2);
  position: relative;
  overflow: hidden;
}
.step__fig--1 { padding: 12px; display: flex; align-items: center; gap: 10px; }
.step__phone { width: 38px; height: 50px; border-radius: 6px; background: var(--bg-3); border: 1px solid var(--line-2); flex: 0 0 auto; }
.step__lines { display: flex; flex-direction: column; gap: 5px; flex: 1; }
.step__lines span { display: block; height: 6px; width: 70%; background: var(--bg-3); border-radius: 3px; }
.step__lines span.short { width: 40%; }
.step__lines .chip {
  display: inline-flex; align-items: center; gap: 5px;
  align-self: flex-start;
  padding: 3px 7px; background: var(--bg-3);
  border-radius: 999px;
  font-size: 10px; color: var(--fg-3);
  width: auto; height: auto;
}
.step__fig--2 {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 12px;
  font-size: 11px; color: var(--fg-3);
}
.step__fig--2 .muted { color: var(--fg-4); }
.step__fig--2 .path { color: var(--fg-2); }
.step__fig--2 .caret {
  display: inline-block;
  border-left: 1.5px solid var(--accent);
  height: 14px;
  animation: td-blink 1s steps(2) infinite;
}
@keyframes td-blink { 50% { opacity: 0; } }
.step__fig--3 {
  display: flex; align-items: center; justify-content: space-around;
  padding: 10px;
}
.step__file {
  flex: 1; margin: 0 4px; height: 100%;
  border-radius: 6px;
  background: var(--bg-3);
  border: 1px solid var(--line-2);
  display: flex; align-items: flex-end; padding: 6px;
}
.step__file span {
  width: 100%; height: 4px; border-radius: 2px;
  background: var(--line-2);
}
.step__file.is-active { border-color: var(--accent); }
.step__file.is-active span { background: var(--accent); }

/* ─── About ───────────────────────────────────────────────────── */
.about {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: flex-start;
}
@media (min-width: 1024px) {
  .about { grid-template-columns: 1.1fr 1fr; gap: 56px; }
}
.about__copy p { margin: 14px 0 0; max-width: 520px; color: var(--fg-2); font-size: 16px; line-height: 1.6; }
.about__copy p:first-of-type { margin-top: 24px; }
.about__meta {
  margin-top: 28px;
  display: flex; gap: 14px; flex-wrap: wrap;
  font-size: 12px; color: var(--fg-3);
}
.about__meta .sep { color: var(--fg-4); }

.features {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.feature {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: calc(var(--r) + 2px);
  background: var(--bg-1);
}
.feature__icon {
  width: 32px; height: 32px; border-radius: var(--r);
  background: var(--bg-3); border: 1px solid var(--line-2);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px;
}
.feature__title { font-size: 14px; font-weight: 600; }
.feature__body { font-size: 13px; color: var(--fg-2); margin-top: 4px; line-height: 1.5; }

/* ─── FAQ ─────────────────────────────────────────────────────── */
.faq {
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: calc(var(--r) + 4px);
  background: var(--bg-1);
  overflow: hidden;
}
@media (min-width: 720px) { .faq { margin-top: 36px; } }

.faq details {
  border-bottom: 1px solid var(--line);
}
.faq details:last-child { border-bottom: 0; }
.faq summary {
  list-style: none;
  padding: 16px 18px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  cursor: pointer;
  font-size: 14px; font-weight: 500;
  user-select: none;
}
@media (min-width: 720px) {
  .faq summary { padding: 18px 22px; font-size: 15px; }
}
.faq summary::-webkit-details-marker { display: none; }
.faq__toggle {
  width: 24px; height: 24px; border-radius: 999px;
  background: var(--bg-3);
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform .15s, background .15s, color .15s;
  color: var(--fg-3);
  flex: 0 0 auto;
  position: relative;
}
.faq__toggle::before, .faq__toggle::after {
  content: ""; position: absolute;
  background: currentColor;
}
.faq__toggle::before { width: 10px; height: 1.5px; }
.faq__toggle::after { width: 1.5px; height: 10px; }
.faq details[open] .faq__toggle {
  transform: rotate(45deg);
  background: var(--accent);
  color: var(--accent-fg);
}
.faq__body {
  padding: 0 18px 18px;
  color: var(--fg-2);
  font-size: 14px;
  line-height: 1.6;
  max-width: 740px;
}
@media (min-width: 720px) { .faq__body { padding: 0 22px 20px; } }

/* ─── Footer ──────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--line);
  background: var(--bg-1);
  padding: 36px 18px 24px;
  margin-top: 24px;
}
@media (min-width: 720px) { .footer { padding: 48px 32px 28px; } }
.footer__inner { max-width: var(--maxw); margin: 0 auto; }
.footer__cols {
  display: grid; gap: 28px;
  grid-template-columns: 1fr;
  margin-bottom: 28px;
}
@media (min-width: 720px) {
  .footer__cols { grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; margin-bottom: 36px; }
}
.footer__brand p {
  margin: 14px 0 0;
  font-size: 13px; color: var(--fg-3);
  line-height: 1.6; max-width: 280px;
}
.footer__title {
  font-size: 12px; color: var(--fg-3);
  text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.footer__col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.footer__col a {
  font-size: 13px; color: var(--fg-2); text-decoration: none;
  transition: color .12s;
}
.footer__col a:hover { color: var(--fg); }

.langs { display: flex; flex-wrap: wrap; gap: 6px; }
.lang {
  font-size: 12px; padding: 4px 9px;
  border: 1px solid var(--line-2); border-radius: 999px;
  color: var(--fg-3); text-decoration: none;
  transition: color .12s, background .12s;
}
.lang:hover { color: var(--fg); }
.lang.is-active { color: var(--fg); background: var(--bg-3); }

.footer__bottom {
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 10px;
  justify-content: space-between; align-items: flex-start;
  font-size: 11px; color: var(--fg-4);
}
@media (min-width: 720px) {
  .footer__bottom { flex-direction: row; align-items: center; }
}
.footer__op { display: inline-flex; align-items: center; gap: 6px; }
.footer__op .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--accent); }

/* ─── Legal pages ─────────────────────────────────────────────── */
.legal-page {
  max-width: 980px;
}
.legal-page__content {
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: calc(var(--r) + 4px);
  background: var(--bg-1);
  padding: 22px 18px;
}
@media (min-width: 720px) {
  .legal-page__content {
    margin-top: 36px;
    padding: 30px 28px;
  }
}
.legal-page__content h2 {
  margin: 22px 0 10px;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.legal-page__content p {
  margin: 0 0 14px;
  color: var(--fg-2);
  font-size: 15px;
  line-height: 1.7;
}
.legal-page__content ul {
  margin: 0 0 14px;
  padding-left: 18px;
  color: var(--fg-2);
}
.legal-page__content li {
  margin-bottom: 8px;
  line-height: 1.6;
}

/* Selection */
::selection { background: var(--accent); color: var(--accent-fg); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}