:root {
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 14px;
  --radius-sm: 10px;

  --bg: #f4f5fb;
  --bg-grad-a: #eceefc;
  --bg-grad-b: #f6f3fc;
  --surface: #ffffff;
  --surface-2: #f7f7fc;
  --text: #1c1e2a;
  --text-2: #5a5f73;
  --text-3: #8a8fa3;
  --border: #e5e6f0;
  --primary: #5b4bcf;
  --primary-strong: #4a3cb6;
  --accent: #0ea5a0;
  --accent-strong: #0b8d89;
  --danger: #d43b4e;
  --danger-bg: #fdeef0;
  --success: #1b9c5a;
  --shadow-sm: 0 1px 2px rgba(28, 30, 42, 0.05);
  --shadow-md: 0 8px 28px rgba(28, 30, 42, 0.09);
  --shadow-lg: 0 16px 48px rgba(28, 30, 42, 0.16);
  --track: #e7e9f4;
  --scrim: rgba(28, 30, 42, 0.35);
}

[data-theme="dark"] {
  --bg: #0f1117;
  --bg-grad-a: #131625;
  --bg-grad-b: #181226;
  --surface: #191c26;
  --surface-2: #21242f;
  --text: #eef0f8;
  --text-2: #b3b8cb;
  --text-3: #7e849c;
  --border: #2b2f3e;
  --primary: #7d6ef0;
  --primary-strong: #8f82f5;
  --accent: #22c3bd;
  --accent-strong: #34cfc9;
  --danger: #ff6b7d;
  --danger-bg: #3a1b21;
  --success: #3bc97e;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
  --track: #2c3040;
  --scrim: rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  background-image: radial-gradient(1200px 500px at 15% -10%, var(--bg-grad-a), transparent 60%),
    radial-gradient(1000px 600px at 110% 0%, var(--bg-grad-b), transparent 55%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background 0.25s ease, color 0.25s ease;
}

.container {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 12px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
a.brand { text-decoration: none; color: inherit; }
.brand-mark {
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  color: var(--primary);
}
.brand-mark img.brand-logo {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  border-radius: 10px;
}
.brand-mark svg { width: 100%; height: 100%; display: block; }
.brand-text { min-width: 0; }
.brand-name {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 750;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand-sub {
  display: block;
  margin-top: 1px;
  font-size: 0.8rem;
  color: var(--text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.header-controls { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }

.select-control {
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 34px 9px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a8fa3' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}
[dir="rtl"] .select-control { background-position: left 10px center; padding: 9px 12px 9px 34px; }
.select-control:focus-visible,
.icon-button:focus-visible,
.btn:focus-visible,
.dropzone:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease;
}
.icon-button:hover { background: var(--track); }
.icon-button svg { width: 20px; height: 20px; }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* ---------- Workspace ---------- */
.workspace { padding-top: 26px; padding-bottom: 60px; }

.intro p {
  margin: 0 0 22px;
  max-width: 620px;
  color: var(--text-2);
  font-size: 1.02rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 22px;
  margin-bottom: 18px;
  transition: background 0.25s ease, border-color 0.25s ease;
}
.panel-title {
  margin: 0 0 14px;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ---------- Dropzone ---------- */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 40px 20px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.15s ease;
}
.dropzone:hover { border-color: var(--primary); }
.dropzone.drag-over {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 8%, var(--surface-2));
  transform: scale(1.005);
}
.dropzone:focus-visible { outline-offset: 3px; }
.dropzone-icon {
  width: 58px; height: 58px;
  display: grid; place-items: center;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  border-radius: 50%;
  margin-bottom: 6px;
}
.dropzone-icon svg { width: 30px; height: 30px; }
.dropzone-text { margin: 0; font-size: 1.05rem; }
.dropzone-or { margin: 2px 0 0; color: var(--text-3); font-size: 0.85rem; }
.dropzone-hint { margin: 10px 0 0; color: var(--text-3); font-size: 0.82rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 11px 18px;
  font-size: 0.94rem;
  font-weight: 650;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.12s ease, opacity 0.18s ease, box-shadow 0.18s ease;
  user-select: none;
}
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-strong); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 35%, transparent); }
.btn-accent:hover:not(:disabled) { background: var(--accent-strong); }
.btn-secondary { background: var(--surface-2); color: var(--text); border-color: var(--border); }
.btn-secondary:hover:not(:disabled) { background: var(--track); }
.btn-ghost { background: transparent; color: var(--text-2); border-color: var(--border); }
.btn-ghost:hover:not(:disabled) { background: var(--surface-2); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-lg { padding: 14px 26px; font-size: 1rem; border-radius: var(--radius-sm); }
.btn-sm { padding: 7px 12px; font-size: 0.82rem; }

/* ---------- File card ---------- */
.file-card {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.file-icon {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 12px;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  flex: 0 0 46px;
}
.file-icon svg { width: 26px; height: 26px; }
.file-meta { flex: 1 1 200px; min-width: 0; }
.file-name {
  margin: 0;
  font-weight: 650;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-detail { margin: 2px 0 0; color: var(--text-2); font-size: 0.85rem; }
.file-actions { flex: 0 0 auto; }

.preview-player { margin-top: 16px; border-top: 1px solid var(--border); padding-top: 16px; }

/* ---------- Controls ---------- */
.controls-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  align-items: end;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field-label { font-size: 0.84rem; font-weight: 650; color: var(--text-2); }
.check-row {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  cursor: pointer;
  font-size: 0.9rem;
}
.check-row input { width: 17px; height: 17px; accent-color: var(--primary); cursor: pointer; }

.actions-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- Status ---------- */
.status-panel { text-align: center; }
.status-panel.is-error { border-color: var(--danger); }
.status-box { display: flex; align-items: center; gap: 14px; justify-content: center; }
.status-info { text-align: left; }
[dir="rtl"] .status-info { text-align: right; }
.status-text { margin: 0; font-size: 1.02rem; font-weight: 700; }
.status-detail { margin: 2px 0 0; color: var(--text-2); font-size: 0.86rem; }

.spinner {
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  border: 4px solid var(--track);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.status-done-icon {
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  color: var(--success);
}

.progress-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
}
.progress-track {
  flex: 1;
  height: 10px;
  border-radius: 999px;
  background: var(--track);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 0.35s ease;
}
.progress-pct { font-variant-numeric: tabular-nums; color: var(--text-2); font-size: 0.9rem; font-weight: 650; }
.status-actions { margin-top: 14px; min-height: 34px; }

/* ---------- Results ---------- */
.results-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.results-head .panel-title { margin: 0; }
.results-head-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.results-note { color: var(--text-3); font-size: 0.78rem; }

.stems-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

/* ---------- Stem card ---------- */
.stem-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.stem-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px 0;
}
.stem-icon {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 10px;
  color: var(--stem-color, var(--primary));
  background: color-mix(in srgb, var(--stem-color, var(--primary)) 14%, transparent);
  flex: 0 0 40px;
}
.stem-icon svg { width: 22px; height: 22px; }
.stem-title-wrap { min-width: 0; }
.stem-title, .stem-sub { margin: 0; }
.stem-title { font-weight: 700; font-size: 0.98rem; line-height: 1.2; }
.stem-sub { color: var(--text-3); font-size: 0.76rem; }
.stem-style-vocals { --stem-color: #b548d6; }
.stem-style-drums { --stem-color: #e07b16; }
.stem-style-bass { --stem-color: #2f86eb; }
.stem-style-other { --stem-color: #0ea5a0; }

/* player */
.player { padding: 10px 16px 16px; display: flex; flex-direction: column; gap: 8px; }
.player-top { display: flex; align-items: center; gap: 10px; }
.play-btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: none;
  background: var(--stem-color, var(--primary));
  color: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
  flex: 0 0 44px;
  transition: transform 0.12s ease, filter 0.18s ease;
}
.play-btn:hover { filter: brightness(1.08); transform: scale(1.03); }
.play-btn svg { width: 20px; height: 20px; }
.play-btn .icon-pause { display: none; }
.play-btn.playing .icon-play { display: none; }
.play-btn.playing .icon-pause { display: block; }

.player-times {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.player-time {
  font-variant-numeric: tabular-nums;
  font-size: 0.78rem;
  color: var(--text-2);
  white-space: nowrap;
}
.seek {
  flex: 1;
  min-width: 0;
}
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: var(--track);
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--stem-color, var(--primary));
  border: 2px solid var(--surface);
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
  cursor: grab;
}
input[type="range"]::-moz-range-thumb {
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--stem-color, var(--primary));
  border: 2px solid var(--surface);
  cursor: grab;
}
input[type="range"].input-accent::-webkit-slider-thumb { background: var(--primary); }
input[type="range"].input-accent::-moz-range-thumb { background: var(--primary); }

.player-bottom { display: flex; align-items: center; gap: 12px; }
.vol-wrap { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; }
.vol-wrap svg { width: 18px; height: 18px; color: var(--text-2); flex: 0 0 18px; }
.vol-wrap input { min-width: 60px; }

.player-err {
  color: var(--danger);
  font-size: 0.78rem;
  margin: 6px 0 0;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 8px 13px;
  border-radius: var(--radius-sm);
  font-size: 0.83rem;
  font-weight: 650;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.18s ease;
  text-decoration: none;
}
.download-btn:hover { background: var(--track); }
.download-btn svg { width: 16px; height: 16px; }

/* ---------- Alerts ---------- */
.alert {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}
.alert-error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 30%, transparent);
}

/* ---------- Pages: navigation & legal prose ---------- */
.main-nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.main-nav a {
  display: inline-block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.15s ease, background 0.15s ease;
}
.main-nav a:hover { color: var(--text); background: var(--surface-2); }
.main-nav a.active { color: var(--primary); }

.page-main { padding: 34px 0 52px; }
.page-head { margin-bottom: 26px; }
.page-title { margin: 0 0 6px; font-size: 1.9rem; font-weight: 800; letter-spacing: -0.02em; }
.page-lede { margin: 0; color: var(--text-2); font-size: 1.02rem; }
.page-meta { margin-top: 10px; font-size: 0.82rem; color: var(--text-3); }

.legal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 28px 30px;
}
.legal-card h2 { font-size: 1.25rem; margin: 26px 0 10px; }
.legal-card h2:first-child { margin-top: 0; }
.legal-card h3 { font-size: 1.04rem; margin: 20px 0 8px; color: var(--text); }
.legal-card p { margin: 0 0 12px; color: var(--text-2); }
.legal-card ul, .legal-card ol { margin: 0 0 14px; padding-left: 22px; color: var(--text-2); }
.legal-card li { margin-bottom: 6px; }
.legal-card a { color: var(--primary); }
.legal-card em { color: var(--text); }

.faq-item { border-bottom: 1px solid var(--border); padding: 18px 0; }
.faq-item:first-child { padding-top: 4px; }
.faq-item:last-child { border-bottom: 0; padding-bottom: 4px; }
.faq-q { margin: 0 0 6px; font-size: 1.05rem; font-weight: 700; }
.faq-a { margin: 0; color: var(--text-2); }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 4px; }
.contact-box {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
}
.contact-box h3 { margin: 0 0 4px; font-size: 1rem; }
.contact-box p { margin: 0; color: var(--text-2); font-size: 0.92rem; }
.contact-box a { color: var(--primary); }

.footer-nav { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 10px; }
.footer-nav a { color: var(--text-3); text-decoration: none; }
.footer-nav a:hover { color: var(--primary); }

/* ---------- Blog ---------- */
.blog-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.post-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 20px 22px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.post-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }
.post-tag { align-self: flex-start; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--primary); background: color-mix(in srgb, var(--primary) 12%, transparent); padding: 4px 10px; border-radius: 999px; }
.post-title { margin: 10px 0 6px; font-size: 1.12rem; font-weight: 750; line-height: 1.35; }
.post-excerpt { margin: 0 0 12px; color: var(--text-2); font-size: 0.92rem; }
.post-meta { margin-top: auto; font-size: 0.78rem; color: var(--text-3); display: flex; gap: 10px; flex-wrap: wrap; }

.article-head { margin-bottom: 22px; }
.article-title { margin: 8px 0 8px; font-size: 1.7rem; font-weight: 800; line-height: 1.3; letter-spacing: -0.015em; }
.article-meta { display: flex; gap: 12px; font-size: 0.82rem; color: var(--text-3); flex-wrap: wrap; }
.legal-card h2 { margin-top: 30px; }
.legal-card p { line-height: 1.7; }
.article-figure {
  margin: 22px 0;
  text-align: center;
}
.article-figure img {
  max-width: 520px;
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.article-figure figcaption {
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--text-3);
}
.key-points {
  background: color-mix(in srgb, var(--accent) 10%, var(--surface-2));
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border));
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin: 18px 0;
}
.key-points strong { display: block; margin-bottom: 6px; color: var(--text); }
.legal-card ul.pills { list-style: none; padding-left: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.legal-card ul.pills li { margin: 0; }
.pill {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-2);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
}

.lang-switch { display: inline-flex; gap: 6px; flex-wrap: wrap; margin: 0 0 18px; }
.lang-switch a {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.lang-switch a:hover { border-color: color-mix(in srgb, var(--primary) 50%, var(--border)); color: var(--text); }
.lang-switch a.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.lang-block[hidden] { display: none; }

[dir="rtl"] .main-nav { margin-left: 0; margin-right: auto; }
[dir="rtl"] .legal-card ul, [dir="rtl"] .legal-card ol { padding-right: 22px; padding-left: 0; }
[dir="rtl"] .key-points { border-left: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border)); border-right: 4px solid var(--accent); }

@media (max-width: 720px) {
  .blog-grid { grid-template-columns: 1fr; }
  .article-title { font-size: 1.4rem; }
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  color: var(--text-3);
  font-size: 0.84rem;
}
.site-footer a { color: var(--primary); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer .credits { color: #EFBF04; font-weight: 600; }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .stems-grid { grid-template-columns: 1fr; }
  .controls-grid { grid-template-columns: 1fr; }
  .header-inner { padding: 12px 16px; }
  .brand-name { font-size: 1.05rem; }
  .panel { padding: 18px; }
  .dropzone { padding: 30px 16px; }
  .main-nav { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .legal-card { padding: 20px; }
  .page-title { font-size: 1.55rem; }
}

@media (max-width: 420px) {
  .brand-mark { width: 30px; height: 30px; flex-basis: 30px; }
  .header-controls { gap: 6px; }
  .results-head-actions { width: 100%; }
  .player-bottom { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001s !important; transition-duration: 0.001s !important; }
}