:root {
  color-scheme: light dark;
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  line-height: 1.4;
  padding: 0;
  margin: 0;
}

body {
  margin: 0;
  padding: 1.5rem;
  background: #f5f5f5;
  color: #222;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #111;
    color: #f5f5f5;
  }
}

header {
  max-width: 800px;
  margin: 0 auto 2rem auto;
  text-align: center;
}

header h1 {
  margin: 0 0 0.5rem 0;
}

header p {
  margin: 0;
  color: #666;
}

@media (prefers-color-scheme: dark) {
  header p {
    color: #aaa;
  }
}

main {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

section {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
  section {
    background: rgba(25, 25, 25, 0.9);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
  }
}

h2 {
  margin: 0 0 1rem 0;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #0891b2;
}

@media (prefers-color-scheme: dark) {
  h2 {
    border-bottom-color: #22d3ee;
  }
}

/* Form elements */
.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.form-row label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.95rem;
  font-weight: 500;
}

.form-controls {
  flex-direction: row;
  gap: 1rem;
}

.form-controls label {
  flex: 1;
}

.required {
  color: #ef4444;
}

textarea {
  width: 100%;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.2);
  background: rgba(255, 255, 255, 0.95);
  font-family: inherit;
  font-size: 0.95rem;
  resize: vertical;
  min-height: 120px;
  box-sizing: border-box;
}

@media (prefers-color-scheme: dark) {
  textarea {
    background: #1f1f1f;
    border-color: #444;
    color: inherit;
  }
}

textarea:focus {
  outline: none;
  border-color: #0891b2;
}

@media (prefers-color-scheme: dark) {
  textarea:focus {
    border-color: #22d3ee;
  }
}

.char-count {
  font-size: 0.85rem;
  color: #666;
  align-self: flex-end;
}

@media (prefers-color-scheme: dark) {
  .char-count {
    color: #aaa;
  }
}

select {
  padding: 0.5rem;
  border-radius: 6px;
  border: 1px solid rgba(0, 0, 0, 0.2);
  background: rgba(255, 255, 255, 0.95);
  font-family: inherit;
  font-size: 0.95rem;
  cursor: pointer;
}

@media (prefers-color-scheme: dark) {
  select {
    background: #1f1f1f;
    border-color: #444;
    color: inherit;
  }
}

select:focus {
  outline: none;
  border-color: #0891b2;
}

@media (prefers-color-scheme: dark) {
  select:focus {
    border-color: #22d3ee;
  }
}

input[type='range'] {
  width: 100%;
  cursor: pointer;
}

.speed-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: #0891b2;
  text-align: center;
  min-width: 3rem;
}

@media (prefers-color-scheme: dark) {
  .speed-value {
    color: #22d3ee;
  }
}

.button-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

button {
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  border: 1px solid #333;
  background: #fff;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

button:hover {
  background: #ececec;
}

@media (prefers-color-scheme: dark) {
  button {
    background: #1f1f1f;
    border-color: #666;
    color: inherit;
  }

  button:hover {
    background: #2a2a2a;
  }
}

button[type='submit'] {
  background: #0891b2;
  color: #fff;
  border-color: #0891b2;
  flex: 1;
}

button[type='submit']:hover {
  background: #0e7490;
}

button[type='submit']:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button[type='button'] {
  background: transparent;
  border-color: #666;
  color: #666;
}

button[type='button']:hover {
  background: rgba(0, 0, 0, 0.05);
}

@media (prefers-color-scheme: dark) {
  button[type='button'] {
    border-color: #888;
    color: #aaa;
  }

  button[type='button']:hover {
    background: rgba(255, 255, 255, 0.05);
  }
}

/* Audio section */
audio {
  width: 100%;
  margin-bottom: 1rem;
}

.audio-info {
  margin-top: 1rem;
}

.audio-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.05);
}

@media (prefers-color-scheme: dark) {
  .info-item {
    background: rgba(255, 255, 255, 0.05);
  }
}

.info-label {
  font-size: 0.75rem;
  color: #999;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.5px;
}

@media (prefers-color-scheme: dark) {
  .info-label {
    color: #777;
  }
}

.info-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: #333;
}

@media (prefers-color-scheme: dark) {
  .info-value {
    color: #ccc;
  }
}

/* Messages */
#messages {
  max-width: 800px;
  margin: 1rem auto;
  min-height: 1.2rem;
  font-weight: 500;
  text-align: center;
}

#messages.success {
  color: #1a7f37;
}

#messages.error {
  color: #d93025;
}

@media (prefers-color-scheme: dark) {
  #messages.success {
    color: #62ff8e;
  }

  #messages.error {
    color: #ff6b6b;
  }
}

/* Mobile responsive */
@media (max-width: 768px) {
  body {
    padding: 1rem;
  }

  .form-controls {
    flex-direction: column;
    gap: 1rem;
  }

  .button-row {
    flex-direction: column;
  }

  .button-row button {
    width: 100%;
  }
}

/* Breadcrumb navigation */
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto 1rem auto;
  padding: 0.75rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.breadcrumb-link {
  color: #0891b2;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.breadcrumb-link:hover {
  color: #0e7490;
  text-decoration: underline;
}

@media (prefers-color-scheme: dark) {
  .breadcrumb-link {
    color: #22d3ee;
  }

  .breadcrumb-link:hover {
    color: #0891b2;
  }
}

.breadcrumb-separator {
  color: #666;
  user-select: none;
}

@media (prefers-color-scheme: dark) {
  .breadcrumb-separator {
    color: #aaa;
  }
}

.breadcrumb-current {
  color: #666;
  font-weight: 500;
}

@media (prefers-color-scheme: dark) {
  .breadcrumb-current {
    color: #aaa;
  }
}