:root {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: #0f172a;
}

body {
  margin: 0;
  background: #f5f7fb;
  line-height: 1.7;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 18px;
}

.tts-hero {
  background: linear-gradient(120deg, #0f6efc, #5b1bff);
  color: #fff;
  padding: 56px 0 48px;
}

.tts-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 26px;
  align-items: center;
}

.eyebrow {
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 0.78rem;
  margin: 0 0 8px;
}

.tts-hero h1 {
  margin: 0 0 12px;
  font-size: clamp(2.1rem, 4vw, 3rem);
}

.subtitle {
  margin: 0 0 12px;
  opacity: 0.95;
}

.hero-bullets {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.hero-bullets span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-weight: 700;
}

.hero-card {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 20px;
  padding: 22px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.18);
}

.badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  padding: 6px 12px;
  border-radius: 12px;
  font-weight: 700;
}

.tts-main {
  padding: 34px 0 60px;
}

.tts-grid {
  display: grid;
  gap: 18px;
}

.card {
  background: #fff;
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
  border: 1px solid #e2e8f0;
}

.card-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 6px 10px;
  border-radius: 999px;
  background: #eef2ff;
  color: #1d4ed8;
  font-weight: 700;
  font-size: 0.9rem;
}

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.8fr);
  gap: 16px;
  margin-top: 14px;
}

.input-col textarea {
  width: 100%;
  min-height: 180px;
  border: 1px solid #d6d9e8;
  border-radius: 12px;
  padding: 12px;
  font-size: 1rem;
  resize: vertical;
}

.label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
}

.muted {
  color: #64748b;
}

.toggle-row {
  margin-top: 8px;
  display: flex;
  gap: 10px;
  align-items: center;
}

.cta-row {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.primary-btn,
.secondary-btn,
.ghost-btn {
  border: none;
  border-radius: 12px;
  padding: 10px 14px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.primary-btn {
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  color: #fff;
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.35);
}

.primary-btn.pulse {
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
  0% {
    transform: translateY(0);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.35);
  }
  50% {
    transform: translateY(-1px);
    box-shadow: 0 14px 34px rgba(37, 99, 235, 0.45);
  }
  100% {
    transform: translateY(0);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.35);
  }
}

.secondary-btn {
  background: #f8fafc;
  border: 1px solid #dbeafe;
  color: #0f172a;
}

.ghost-btn {
  background: #fff;
  border: 1px solid #dbeafe;
  color: #0f6efc;
}

.ghost-btn:hover,
.secondary-btn:hover,
.primary-btn:hover {
  transform: translateY(-1px);
}

.progress-wrap {
  margin-top: 10px;
  display: grid;
  gap: 6px;
}

.progress-bar {
  width: 100%;
  height: 10px;
  background: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.progress-bar span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #0f6efc, #5b1bff);
  transition: width 0.25s ease;
}

.progress-text {
  font-size: 0.95rem;
  color: #475569;
}

.audio-box {
  margin-top: 10px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 10px;
}

.controls-col {
  display: grid;
  gap: 12px;
}

.control-group {
  display: grid;
  gap: 6px;
}

.control-group select,
.control-group input[type="range"] {
  width: 100%;
  border: 1px solid #d6d9e8;
  border-radius: 10px;
  padding: 10px;
  background: #fff;
}

.history-card .history-list {
  display: grid;
  gap: 10px;
}

.history-item {
  padding: 12px;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  background: #f8fafc;
  display: grid;
  gap: 6px;
}

.info-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
}

.info-card {
  background: #fff;
  border-radius: 16px;
  padding: 16px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.06);
}

.accordion details {
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 10px 12px;
  margin-bottom: 10px;
  background: #fff;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.accordion summary {
  cursor: pointer;
  font-weight: 700;
}

.accordion details:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

@media (max-width: 900px) {
  .tts-hero-grid {
    grid-template-columns: 1fr;
  }
  .tool-layout {
    grid-template-columns: 1fr;
  }
}