/**
 * Settings Panel — Refined, Premium, Intentional
 *
 * "The details are not the details. They make the design." — Eames
 *
 * A settings panel that feels like opening a fine watch's mechanism:
 * everything in its place, precision evident, no wasted space.
 */

/* ========== Settings Panel Foundation ========== */

.settings-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  max-width: 640px;
}

/* ========== Section — A Distinct Chapter ========== */

.settings-section {
  position: relative;
}

.settings-section__title {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin: 0 0 var(--space-4) 0;
  padding-bottom: var(--space-3);
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Elegant line extending from title */
.settings-section__title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(
    90deg,
    var(--border-dim),
    transparent 80%
  );
}

.settings-section__content {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--duration-normal) var(--ease-out);
}

.settings-section__content:hover {
  border-color: var(--border);
}

/* Top edge light reflection */
.settings-section__content::before {
  content: '';
  position: absolute;
  top: 0;
  left: var(--space-4);
  right: var(--space-4);
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.06),
    transparent
  );
  pointer-events: none;
}

/* ========== Setting Row — The Individual Control ========== */

.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-dim);
  transition: background var(--duration-fast) var(--ease-out);
}

.setting-row:last-child {
  border-bottom: none;
}

.setting-row:hover {
  background: rgba(255, 255, 255, 0.02);
}

.setting-row__info {
  flex: 1;
  min-width: 0;
  padding-right: var(--space-4);
}

.setting-row__label {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.setting-row__desc {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  line-height: var(--line-height-relaxed);
}

.setting-row__control {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* ========== Toggle Switch — Refined Mechanism ========== */

.toggle-switch {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.toggle-switch__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-switch__label {
  position: relative;
  display: block;
  cursor: pointer;
}

.toggle-switch__track {
  display: block;
  width: 48px;
  height: 26px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  position: relative;
  transition:
    background-color var(--duration-normal) var(--ease-spring),
    border-color var(--duration-normal) var(--ease-spring),
    box-shadow var(--duration-normal) var(--ease-spring);
}

/* The thumb/knob */
.toggle-switch__track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.9) 0%,
    rgba(200, 200, 200, 0.9) 100%
  );
  border-radius: var(--radius-full);
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  transition:
    left var(--duration-normal) var(--ease-spring),
    width var(--duration-normal) var(--ease-spring),
    background var(--duration-normal) var(--ease-spring);
}

/* Active state */
.toggle-switch__input:checked + .toggle-switch__label .toggle-switch__track {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.toggle-switch__input:checked + .toggle-switch__label .toggle-switch__track::after {
  left: 24px;
  background: linear-gradient(
    145deg,
    #ffffff 0%,
    #f0f0f0 100%
  );
}

/* Hover glow */
.toggle-switch__label:hover .toggle-switch__track {
  border-color: var(--border-bright);
}

.toggle-switch__input:checked + .toggle-switch__label:hover .toggle-switch__track {
  box-shadow: 0 0 12px var(--accent-dim);
}

/* Focus state */
.toggle-switch__input:focus-visible + .toggle-switch__label .toggle-switch__track {
  box-shadow: 0 0 0 3px var(--accent-dim);
}

/* Stretch on press */
.toggle-switch__label:active .toggle-switch__track::after {
  width: 24px;
}

.toggle-switch__input:checked + .toggle-switch__label:active .toggle-switch__track::after {
  left: 20px;
}

.toggle-switch__text {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  min-width: 72px;
  text-align: left;
  letter-spacing: 0.02em;
}

/* ========== Theme Selector — Triple Choice ========== */

.theme-selector {
  display: flex;
  gap: var(--space-1);
  background: var(--bg-primary);
  padding: 3px;
  border-radius: var(--radius);
  border: 1px solid var(--border-dim);
}

.theme-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: 1px solid transparent;
  border-radius: calc(var(--radius) - 2px);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--text-tertiary);
  cursor: pointer;
  transition:
    color var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

.theme-btn:hover {
  color: var(--text-secondary);
  background: var(--bg-hover);
}

.theme-btn--active {
  background: var(--bg-surface);
  border-color: var(--border);
  color: var(--text-primary);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.theme-btn__icon {
  font-size: var(--text-base);
  line-height: 1;
}

/* ========== Emergency Button — Gravity Without Alarm ========== */

.emergency-btn {
  position: relative;
  padding: var(--space-2) var(--space-4);
  background: transparent;
  border: 1px solid var(--color-danger);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.05em;
  color: var(--color-danger);
  cursor: pointer;
  overflow: hidden;
  transition:
    color var(--duration-normal) var(--ease-out),
    border-color var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out);
}

.emergency-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-danger);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.emergency-btn:hover {
  color: white;
  border-color: var(--color-danger);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

.emergency-btn:hover::before {
  opacity: 1;
}

.emergency-btn span {
  position: relative;
  z-index: 1;
}

.emergency-btn:active {
  transform: scale(0.97);
  transition-duration: var(--duration-faster);
}

.emergency-btn:focus-visible {
  outline: 2px solid var(--color-danger);
  outline-offset: 2px;
}

/* ========== Value Pills — Read-Only Settings ========== */

.setting-value {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1\.5) var(--space-3);
  background: var(--bg-primary);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition:
    color var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

.setting-value:hover {
  border-color: var(--border-bright);
  color: var(--text-primary);
}

.setting-value--highlight {
  background: var(--accent-dim);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* ========== Section Icons ========== */

.settings-section__icon {
  opacity: 0.4;
  font-size: var(--text-sm);
}

/* ========== Responsive ========== */

@media (max-width: 480px) {
  .setting-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .setting-row__info {
    padding-right: 0;
  }

  .setting-row__control {
    width: 100%;
  }

  .theme-selector {
    width: 100%;
    justify-content: space-between;
  }

  .theme-btn {
    flex: 1;
    justify-content: center;
  }

  .toggle-switch {
    width: 100%;
    justify-content: space-between;
  }
}

/* ========== Light Mode Adjustments ========== */

[data-theme="light"] .toggle-switch__track::after {
  background: linear-gradient(
    145deg,
    #ffffff 0%,
    #e0e0e0 100%
  );
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 1);
}

[data-theme="light"] .setting-row:hover {
  background: rgba(0, 0, 0, 0.02);
}

[data-theme="light"] .settings-section__content::before {
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0, 0, 0, 0.04),
    transparent
  );
}

/* ========== Reduced Motion ========== */

@media (prefers-reduced-motion: reduce) {
  .toggle-switch__track,
  .toggle-switch__track::after,
  .emergency-btn,
  .emergency-btn::before {
    transition: none;
  }
}