:root {
  --bg: #0b0b12;
  --bg-2: #101018;
  --card: rgba(22, 22, 32, 0.6);
  --card-border: rgba(255, 255, 255, 0.08);
  --text: #f3f3f7;
  --muted: #9797a8;
  --accent-a: #6f5cff;
  --accent-b: #ff5c8a;
  --input-bg: rgba(255, 255, 255, 0.04);
  --input-border: rgba(255, 255, 255, 0.12);
  --error-bg: rgba(255, 82, 82, 0.12);
  --error-text: #ff92a8;
  --error-border: rgba(255, 82, 82, 0.28);
  --shadow: 0 30px 70px -20px rgba(0, 0, 0, 0.6);
  --blob-opacity: 0.4;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, var(--bg), var(--bg-2));
  color: var(--text);
  font-family: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding: 32px 20px;
  overflow-x: hidden;
  position: relative;
}

/* Spans the full document height (not just one viewport) so the page's
   color glows don't run out partway down once content is taller than the
   screen -- .scene below stays position:fixed for the hero's own blobs and
   floating badges, which are meant to frame just the top card. */
.scene-extended {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

/* ---------- animated background ---------- */

.scene {
  position: fixed;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: var(--blob-opacity);
  will-change: transform;
}

.blob-a {
  width: 42vmax;
  height: 42vmax;
  left: -12vmax;
  top: -14vmax;
  background: radial-gradient(circle at 30% 30%, var(--accent-a), transparent 70%);
  animation: drift-a 22s ease-in-out infinite;
}

.blob-b {
  width: 38vmax;
  height: 38vmax;
  right: -14vmax;
  top: 6vmax;
  background: radial-gradient(circle at 60% 40%, var(--accent-b), transparent 70%);
  animation: drift-b 26s ease-in-out infinite;
}

.blob-c {
  width: 34vmax;
  height: 34vmax;
  left: 18vmax;
  bottom: -18vmax;
  background: radial-gradient(circle at 50% 50%, #59d9c8, transparent 70%);
  animation: drift-c 30s ease-in-out infinite;
}

@keyframes drift-a {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(6vmax, 8vmax) scale(1.12); }
}

@keyframes drift-b {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-7vmax, 5vmax) scale(0.92); }
}

@keyframes drift-c {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(4vmax, -6vmax) scale(1.08); }
}

.blob-d {
  width: 38vmax;
  height: 38vmax;
  right: -14vmax;
  top: 48%;
  background: radial-gradient(circle at 40% 40%, var(--accent-a), transparent 70%);
  animation: drift-b 24s ease-in-out infinite;
}

.blob-e {
  width: 36vmax;
  height: 36vmax;
  left: -12vmax;
  top: 78%;
  background: radial-gradient(circle at 50% 50%, var(--accent-b), transparent 70%);
  animation: drift-a 28s ease-in-out infinite;
}

.grain {
  position: absolute;
  inset: 0;
  backdrop-filter: blur(90px);
}

/* ---------- floating decorative badges ---------- */

.float-badge {
  position: absolute;
  display: none;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 16px 34px -14px rgba(0, 0, 0, 0.55);
  color: var(--muted);
}

.float-badge svg {
  width: 22px;
  height: 22px;
}

@media (min-width: 760px) {
  .float-badge {
    display: flex;
  }
}

.fb-1 { top: 12%; left: 9%; animation: float-a 8s ease-in-out infinite; }
.fb-2 { top: 22%; right: 11%; animation: float-b 9s ease-in-out infinite; animation-delay: 0.6s; }
.fb-3 { bottom: 20%; left: 13%; animation: float-c 7.5s ease-in-out infinite; animation-delay: 1.1s; }
.fb-4 { top: 58%; right: 7%; animation: float-a 10s ease-in-out infinite; animation-delay: 0.3s; }
.fb-5 { bottom: 12%; right: 24%; animation: float-b 8.5s ease-in-out infinite; animation-delay: 1.5s; }

@keyframes float-a {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-16px) rotate(-5deg); }
}

@keyframes float-b {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(14px) rotate(5deg); }
}

@keyframes float-c {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(8px, -10px) rotate(-4deg); }
}

/* ---------- layout ---------- */

.layout {
  position: relative;
  z-index: 1;
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 28px;
}

.wrap {
  width: 100%;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ---------- ad slots ---------- */

.ad-slot {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: var(--input-bg);
  border: 1.5px dashed var(--input-border);
  border-radius: 18px;
  color: var(--muted);
  margin-bottom: 24px;
}

.ad-label {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.7;
}

.ad-dims {
  font-size: 0.78rem;
  font-weight: 500;
  opacity: 0.55;
}

.ad-banner {
  max-width: 728px;
  min-height: 90px;
}

/* A slot with a real ad unit in it -- same sizing/margin as .ad-slot's
   placeholder but no dashed border/background/label chrome. */
.ad-mount {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-rect {
  max-width: 300px;
  min-height: 250px;
  margin-bottom: 0;
  margin-top: 24px;
}

.ad-footer {
  margin-top: 24px;
}

.ad-skyscraper {
  display: none;
  width: 160px;
  min-height: 600px;
  flex-shrink: 0;
  position: sticky;
  top: 40px;
  margin-bottom: 0;
}

@media (min-width: 1180px) {
  .ad-skyscraper {
    display: flex;
  }
}

@media (max-width: 480px) {
  .ad-banner {
    min-height: 60px;
  }
}

.card {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 28px;
  padding: 48px 44px;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--shadow);
  text-align: center;
}

/* ---------- entrance animation ---------- */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: reveal-in 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: calc(var(--d) * 70ms);
}

@keyframes reveal-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- text ---------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-a) 18%, transparent);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

h1 {
  margin: 0 0 14px;
  font-size: clamp(1.9rem, 4.6vw, 2.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0 0 34px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- mode toggle ---------- */

.mode-toggle {
  position: relative;
  display: flex;
  width: 100%;
  max-width: 320px;
  margin: 0 auto 14px;
  padding: 4px;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: 14px;
}

.mode-indicator {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 4px;
  width: calc((100% - 8px) / 3);
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* translateX % is relative to the indicator's own width, which equals one
   button's width -- so N*100% lands exactly on the Nth button regardless
   of the track's actual pixel size. */
.mode-toggle[data-mode="mp3"] .mode-indicator {
  transform: translateX(100%);
}

.mode-toggle[data-mode="photo"] .mode-indicator {
  transform: translateX(200%);
}

.mode-btn {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 9px 0;
  border-radius: 10px;
  cursor: pointer;
  transition: color 0.3s ease;
}

.mode-btn svg {
  width: 15px;
  height: 15px;
}

.mode-btn.is-active {
  color: #fff;
}

/* ---------- input + button ---------- */

.input-shell {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: 18px;
  padding: 6px 6px 6px 16px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.input-shell:focus-within {
  border-color: color-mix(in srgb, var(--accent-a) 55%, var(--input-border));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-a) 14%, transparent);
}

.input-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--muted);
}

#url-input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 0.98rem;
  padding: 12px 4px;
}

#url-input::placeholder {
  color: var(--muted);
}

#url-input:disabled {
  opacity: 0.6;
}

#download-btn {
  position: relative;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 13px;
  padding: 12px 20px;
  color: white;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
  background-size: 160% 160%;
  background-position: 0% 50%;
  transition: background-position 0.5s ease, transform 0.15s ease, box-shadow 0.25s ease;
  box-shadow: 0 8px 20px -8px color-mix(in srgb, var(--accent-a) 70%, transparent);
}

#download-btn:hover:not(:disabled) {
  background-position: 100% 50%;
  transform: translateY(-1px);
  box-shadow: 0 12px 26px -8px color-mix(in srgb, var(--accent-a) 75%, transparent);
}

#download-btn:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
}

#download-btn svg {
  width: 17px;
  height: 17px;
}

.btn-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.btn-spinner {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.btn-check {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 19px;
  height: 19px;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.btn-check path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 0.35s ease 0.05s;
}

#download-btn.is-loading {
  cursor: default;
  pointer-events: none;
}

#download-btn.is-loading .btn-label {
  opacity: 0;
  transform: scale(0.85);
}

#download-btn.is-loading .btn-spinner {
  opacity: 1;
  transform: scale(1);
  animation: spin 0.7s linear infinite;
}

#download-btn.is-success .btn-label {
  opacity: 0;
  transform: scale(0.85);
}

#download-btn.is-success .btn-check {
  opacity: 1;
  transform: scale(1);
}

#download-btn.is-success .btn-check path {
  stroke-dashoffset: 0;
}

@keyframes spin {
  to { transform: scale(1) rotate(360deg); }
}

#download-btn:disabled:not(.is-loading):not(.is-success) {
  opacity: 0.55;
  cursor: not-allowed;
}

/* ---------- status / error ---------- */

.status,
.error {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows 0.35s ease, opacity 0.3s ease, margin 0.35s ease;
  margin-top: 0;
}

.status > *,
.error {
  overflow: hidden;
}

.status.is-visible,
.error.is-visible {
  grid-template-rows: 1fr;
  opacity: 1;
  margin-top: 18px;
}

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

.status-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 2px;
}

.progress-track {
  width: 100%;
  max-width: 220px;
  height: 4px;
  border-radius: 999px;
  background: var(--input-border);
  overflow: hidden;
}

.progress-fill {
  display: block;
  height: 100%;
  width: 40%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent-a), var(--accent-b));
  animation: progress-slide 1.4s ease-in-out infinite;
}

@keyframes progress-slide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

.cancel-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
  padding: 2px 4px;
  transition: color 0.2s ease;
}

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

.error {
  color: var(--error-text);
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  border-radius: 12px;
  font-size: 0.88rem;
  line-height: 1.5;
}

.error.is-visible {
  padding: 12px 16px;
}

/* ---------- platform chips ---------- */

.platforms {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.platforms span {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.platforms span:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent-a) 40%, var(--card-border));
  transform: translateY(-1px);
}

.footnote {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}

.footnote-links {
  margin: 6px 0 0;
  text-align: center;
}

.footnote-links a {
  color: var(--muted);
  font-size: 0.78rem;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footnote-links a:hover {
  color: var(--text);
}

/* ---------- content sections (how it works / platforms / FAQ) ---------- */

.content-card {
  margin-top: 24px;
  text-align: left;
}

.content-card h2 {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}

.content-card h2:not(:first-child) {
  margin-top: 32px;
}

.content-card > p {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.65;
  margin: 0;
}

.content-card > p a {
  color: var(--text);
}

.steps {
  margin: 0;
  padding-left: 0;
  list-style: none;
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 40px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.6;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps strong {
  color: var(--text);
}

.faq-item {
  border-top: 1px solid var(--card-border);
  padding: 14px 0;
}

.faq-item:first-of-type {
  border-top: none;
  padding-top: 0;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 0.94rem;
  color: var(--text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--muted);
  transition: transform 0.25s ease;
}

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

.faq-item p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ---------- legal page ---------- */

.legal-card {
  text-align: left;
  padding: 48px 44px;
}

.legal-h1 {
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 10px;
}

.legal-card .subtitle {
  text-align: left;
  margin-left: 0;
  margin-right: 0;
  max-width: none;
}

.legal-body h2 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 28px 0 8px;
}

.legal-body h2:first-child {
  margin-top: 8px;
}

.legal-body p {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.65;
  margin: 0;
}

.back-link {
  display: inline-block;
  margin-top: 32px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.back-link:hover {
  color: var(--text);
}

/* ---------- responsive ---------- */

@media (max-width: 480px) {
  .card {
    padding: 36px 24px;
    border-radius: 22px;
  }

  .input-shell {
    flex-wrap: wrap;
    border-radius: 16px;
  }

  #url-input {
    width: 100%;
    order: 1;
  }

  #download-btn {
    width: 100%;
    order: 2;
    justify-content: center;
    padding: 13px 20px;
  }
}

/* ---------- motion & transparency preferences ---------- */

@media (prefers-reduced-motion: reduce) {
  .blob,
  .float-badge {
    animation: none;
  }

  .mode-indicator {
    transition: none;
  }

  .reveal {
    animation: none;
    opacity: 1;
    transform: none;
  }

  #download-btn,
  .status,
  .error,
  .btn-label,
  .btn-spinner,
  .btn-check {
    transition: none;
  }

  .progress-fill {
    animation: none;
    width: 100%;
  }
}