:root {
  --bg: #040615;
  --card: rgba(8, 12, 32, 0.85);
  --card-light: rgba(12, 17, 44, 0.95);
  --border: rgba(255, 255, 255, 0.08);
  --text: #f8fafc;
  --muted: #cbd5f5;
  --accent: #7c5dff;
  --accent-2: #46c2ff;
  --danger: #ff647c;
  --success: #34d399;
  --shadow: 0 40px 90px rgba(2, 4, 16, 0.55);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at top, #1b1f3a, #050614 60%);
  color: var(--text);
  line-height: 1.6;
  padding: 32px;
}
.hidden {
        display: none !important;
      }

      .toast {
        position: fixed;
        left: 50%;
        bottom: 20px;
        transform: translateX(-50%);
        background: #1f2937;
        color: #fff;
        padding: 10px 14px;
        border-radius: 999px;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.2s ease, transform 0.2s ease;
        box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
        font-size: 14px;
        z-index: 1000;
      }
      .toast.show {
        opacity: 1;
        transform: translateX(-50%) translateY(-4px);
        pointer-events: auto;
      }

.app-shell {
  max-width: 1200px;
  margin: 0 auto 80px auto;
  background: linear-gradient(120deg, rgba(20, 26, 56, 0.95), rgba(7, 10, 28, 0.85));
  border: 1px solid var(--border);
  border-radius: 32px;
  padding: 32px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px);
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand .logo {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 10px;
  font-size: 28px;
  color: var(--accent-2);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.brand-copy strong {
  font-size: 18px;
  color: var(--text);
  letter-spacing: 0.04em;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ui-select {
  appearance: none;
  background: #0f172a;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  padding: 8px 36px 8px 14px;
  font-weight: 500;
  font-size: 14px;
}
.ui-select value{
  font-weight: 500;
  font-size: 14px;
  background-color: #0f172a;
  border-radius: 5px solid;
}

.account-badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.18), rgba(15, 23, 42, 0.9));
  color: var(--accent-2);
  box-shadow: 0 10px 35px rgba(2, 6, 23, 0.45);
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.account-badge::after {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid #020617;
  position: absolute;
  bottom: -2px;
  right: -2px;
  background: rgba(255, 255, 255, 0.3);
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.account-badge.active {
  background: linear-gradient(120deg, #6ee7b7, #3b82f6);
  color: #020617;
  border-color: transparent;
  box-shadow: 0 15px 45px rgba(59, 130, 246, 0.35);
}

.account-badge.active::after {
  background: var(--success, #34d399);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.2);
}

.account-badge:not(.active):hover {
  transform: translateY(-2px);
}

.account-quick {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.badge-tip {
  position: absolute;
  top: -32px;
  right: -4px;
  background: rgba(15, 23, 42, 0.9);
  color: var(--text);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 8px 20px rgba(2, 6, 23, 0.4);
}

.badge-logout {
  position: absolute;
  right: -8px;
  top: 50%;
  transform: translateY(-50%) scale(0.8);
  opacity: 0;
  border: none;
  background: #0f172a;
  color: var(--text);
  border-radius: 999px;
  padding: 6px 10px;
  box-shadow: 0 8px 20px rgba(2, 6, 23, 0.4);
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.account-quick:hover .badge-logout,
.account-quick:focus-within .badge-logout {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}

.account-quick:hover .badge-tip,
.account-quick:focus-within .badge-tip {
  opacity: 1;
  transform: translateY(0);
}

.badge-logout:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 4px;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}

.hero-content h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 12px;
}

.hero-subtitle {
  color: var(--muted);
  max-width: 460px;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.chip {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
}

.hero-card {
  background: var(--card-light);
  border-radius: 24px;
  padding: 24px;
  border: 1px solid var(--border);
  display: grid;
  gap: 16px;
}

.stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

stat-label {
  color: var(--muted);
  font-size: 14px;
}

stat-value {
  font-size: 32px;
  color: var(--accent-2);
}

stat-foot {
  font-size: 14px;
  color: var(--muted);
}

.content-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  padding-top: 32px;
}

.panel {
  background: var(--card);
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}

panel-head {
  margin-bottom: 24px;
}

panel-desc {
  color: var(--muted);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 11px;
  color: var(--accent-2);
  margin-bottom: 6px;
}

.tts-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.input-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.voice-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.voice-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

.tune-inline {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 10px;
  min-width: 200px;
}

.input-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
}

.tune-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 0;
}

.tune-chip {
  border-radius: 999px;
  border: 1px solid var(--border);
  padding: 8px 16px;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  cursor: pointer;
  transition: border 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.tune-chip:hover {
  border-color: rgba(70, 194, 255, 0.6);
}

.tune-chip.active,
.tune-chip[aria-pressed="true"] {
  background: rgba(70, 194, 255, 0.15);
  border-color: rgba(70, 194, 255, 0.6);
  color: var(--accent-2);
}

.tune-note {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
}

textarea,
select,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"] {
  width: 100%;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(4, 7, 18, 0.6);
  color: var(--text);
  padding: 14px 16px;
  font-family: inherit;
  font-size: 15px;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

textarea:focus,
select:focus,
input:focus {
  border-color: var(--accent-2);
  outline: none;
  box-shadow: 0 0 0 3px rgba(70, 194, 255, 0.2);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

setting-description {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}

char-counter {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

.upload-card {
  margin-top: 16px;
  border: 1px dashed var(--border);
  border-radius: 18px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.upload-copy {
  display: flex;
  align-items: center;
  gap: 12px;
}

.upload-copy .material-symbols-outlined {
  font-size: 28px;
  color: var(--accent-2);
  background: rgba(70, 194, 255, 0.08);
  border-radius: 12px;
  padding: 6px;
}

.upload-copy strong {
  display: block;
  font-size: 15px;
}

#upload-helper {
  font-size: 13px;
  color: var(--muted);
}

.upload-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.upload-status {
  font-size: 13px;
  color: var(--muted);
}

.upload-audio {
  width: 100%;
  margin-top: 6px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  padding: 4px;
}


.clone-lab {
  margin-top: 28px;
  border: 1px solid rgba(70, 194, 255, 0.2);
  border-radius: 24px;
  padding: 32px;
  background: radial-gradient(circle at top left, rgba(70, 194, 255, 0.08), rgba(15, 23, 42, 0.35));
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.clone-header {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
}

.clone-copy {
  flex: 1 1 320px;
}

.clone-lab h3 {
  font-size: 1.6rem;
  margin-bottom: 6px;
}

.clone-desc {
  color: var(--muted);
  max-width: 540px;
  margin-top: 6px;
}

.clone-language {
  min-width: 220px;
  flex: 0 0 260px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.clone-language-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.clone-gender-toggle {
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.clone-gender-toggle .btn {
  border-radius: 999px;
  padding: 6px 14px;
  border-color: rgba(255, 255, 255, 0.2);
  font-size: 12px;
}

.clone-gender-toggle .btn.is-active {
  background: rgba(70, 194, 255, 0.18);
  border-color: rgba(70, 194, 255, 0.6);
  color: var(--accent-2);
  box-shadow: 0 10px 30px rgba(70, 194, 255, 0.25);
}

.clone-gender-toggle .btn:focus-visible {
  outline: 2px solid rgba(70, 194, 255, 0.6);
  outline-offset: 2px;
}

.clone-language label {
  font-weight: 600;
}

.clone-language select {
  width: 100%;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(2, 6, 23, 0.7);
  color: var(--text);
  font-weight: 600;
}

.clone-controls {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

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

.clone-actions .btn {
  flex: 1;
  min-width: 160px;
  justify-content: center;
}

.clone-audio {
  width: 100%;
  height: 72px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(15, 23, 42, 0.85);
  padding: 14px;
  box-shadow: 0 20px 60px rgba(2, 6, 23, 0.45);
}

.clone-hint {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}

cc-badge {
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-weight: 600;
}

cc-badge.ok {
  color: var(--accent-2);
  border-color: rgba(70, 194, 255, 0.4);
}

.advanced-settings {
  border: 1px dashed var(--border);
  border-radius: 20px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.02);
}

advanced-settings legend {
  cursor: pointer;
  color: var(--accent-2);
  font-weight: 600;
  margin-bottom: 12px;
}

advanced-settings.collapsed .input-group {
  display: none;
}

.speed-slider,
.pitch-slider {
  width: 100%;
  accent-color: var(--accent);
}

.speed-slider::-webkit-slider-thumb,
.pitch-slider::-webkit-slider-thumb,
.speed-slider::-moz-range-thumb,
.pitch-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: 2px solid #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  cursor: pointer;
}

.generate-btn {
  align-self: flex-start;
  border: none;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #020617;
  border-radius: 16px;
  padding: 14px 28px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.generate-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.generate-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(124, 93, 255, 0.3);
}

.result-section {
  margin-top: 24px;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.02);
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 14px;
  padding: 10px 18px;
  font-weight: 600;
  border: 1px solid transparent;
  color: var(--text);
  cursor: pointer;
  background: transparent;
  transition: all 0.2s ease;
}

.btn.compact {
  padding: 8px 16px;
  font-size: 14px;
}

.btn.solid {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #020617;
}

.btn.ghost {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.btn.ghost.danger {
  border-color: rgba(255, 100, 124, 0.6);
  color: var(--danger);
}

.btn.outline {
  border-color: rgba(124, 93, 255, 0.6);
  color: var(--accent-2);
}

.btn.action-btn.primary {
  background: rgba(70, 194, 255, 0.15);
  border-color: rgba(70, 194, 255, 0.3);
}

.btn.action-btn.neutral {
  border-color: var(--border);
}

.btn.small {
  font-size: 12px;
  padding: 6px 12px;
}

.btn.recording {
  background: rgba(255, 100, 124, 0.15);
  border-color: rgba(255, 100, 124, 0.4);
  color: var(--danger);
}

.reference-card {
  margin-top: 32px;
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.reference-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.reference-desc {
  color: var(--muted);
  margin-top: 6px;
}

.chip-success {
  background: rgba(52, 211, 153, 0.15);
  color: var(--success);
  border-radius: 999px;
  padding: 6px 12px;
  border: 1px solid rgba(52, 211, 153, 0.4);
  font-size: 13px;
}

.chip-danger {
  background: rgba(255, 100, 124, 0.15);
  color: var(--danger);
  border-radius: 999px;
  padding: 6px 12px;
  border: 1px solid rgba(255, 100, 124, 0.4);
  font-size: 13px;
}

.reference-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.reference-file {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border: 1px dashed var(--border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.02);
}

.reference-file .material-symbols-outlined {
  font-size: 30px;
  color: var(--accent-2);
}

.reference-file strong {
  display: block;
}

.reference-file audio {
  flex: 1;
  min-width: 180px;
}

.reference-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.error-section {
  display: none;
  margin-top: 24px;
  border: 1px solid rgba(255, 100, 124, 0.4);
  border-radius: 16px;
  padding: 18px;
  background: rgba(255, 100, 124, 0.08);
}

.error-section .material-symbols-outlined {
  color: var(--danger);
}

.error-message {
  color: #ffd1d9;
}

.details {
  margin-top: 12px;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 13px;
  color: #ffe5ea;
}

.panel.secondary {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.account-card,
.feature-card,
.download-card {
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.02);
}

.account-status {
  margin: 12px 0;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  font-weight: 600;
}

feature-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 12px;
  color: var(--muted);
}

feature-card li span {
  color: var(--success);
  margin-right: 6px;
}

.download-hint {
  font-size: 13px;
  color: var(--muted);
  margin-top: 6px;
}

.site-footer {
  margin-top: 48px;
  padding: 28px;
  border-top: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.65);
}

.footer-content {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
}

.footer-content p {
  margin: 0;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(3, 6, 22, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
}

.modal.hidden {
  display: none;
}

.modal-card {
  width: min(420px, 100%);
  background: var(--card-light);
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--border);
  position: relative;
  box-shadow: var(--shadow);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.modal-subtext {
  color: var(--muted);
  margin-bottom: 18px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.code-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

code-field {
  flex: 1;
}

.code-field input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.code-hint {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: #0f172a;
  color: var(--text);
  padding: 12px 18px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  border: 1px solid var(--border);
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, -6px);
}

.noscript {
  margin: 12px;
  padding: 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 960px) {
  .content-grid {
    grid-template-columns: 1fr;
  }

  .panel.primary,
  .panel.secondary {
    width: 100%;
  }

  .clone-lab {
    padding: 26px;
  }

  .clone-header {
    flex-direction: column;
    gap: 20px;
  }

  .clone-language {
    width: 100%;
  }
}

@media (max-width: 640px) {
  body {
    padding: 16px;
  }

  .app-shell {
    padding: 20px;
  }

  .top-nav {
    flex-direction: column;
  }

  .nav-actions {
    width: 100%;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .code-row {
    flex-direction: column;
    align-items: stretch;
  }

  .hero {
    flex-direction: column;
    gap: 24px;
  }

  .hero-card {
    width: 100%;
  }

  .upload-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .upload-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .clone-actions {
    flex-direction: column;
  }

  .clone-actions .btn {
    width: 100%;
  }

  .clone-audio {
    height: auto;
  }
}

@media (max-width: 420px) {
  .top-nav {
    gap: 14px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .panel-head h2 {
    font-size: 1.5rem;
  }

  .clone-lab {
    padding: 18px;
  }

  .btn {
    font-size: 13px;
    padding: 9px 14px;
  }
}