/* ==================== Preferences and Profile Settings ==================== */
.settings-page {
  position: fixed;
  inset: 0;
  z-index: 9999;
  width: 100%;
  height: 100%;
  overflow-y: auto;
  padding: 20px;
  color: var(--text);
  background: var(--bg-color);
  border-radius: 0;
  box-shadow: none;

  &:not([hidden]) {
    animation: page-surface-in 220ms ease-out;
  }
}

.info-page {
  position: fixed;
  inset: 0;
  z-index: 9999;
  width: 100%;
  height: 100%;
  overflow-y: auto;
  padding: 20px;
  color: var(--text);
  background: var(--bg-color);

  &:not([hidden]) {
    animation: page-surface-in 220ms ease-out;
  }

  & .full-page-header {
    margin-bottom: 2rem;
  }

  & .info-hero {
    max-width: 38rem;
    margin: 0 auto 1.5rem;
    padding: 1.25rem;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    background: var(--glass-bg);
  }

  & .info-hero h3 {
    margin-top: 0.35rem;
    font-size: clamp(1.35rem, 5vw, 1.8rem);
    line-height: 1.2;
  }

  & .info-hero p,
  & .info-note {
    margin-top: 0.65rem;
    color: var(--text-muted);
    font-size: 0.82rem;
    line-height: 1.6;
  }

  & .support-methods,
  & .about-points {
    display: grid;
    gap: 0.75rem;
    max-width: 38rem;
    margin: 0 auto;
  }

  & .support-method,
  & .about-points > div {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 1rem;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    background: var(--glass-bg);
  }

  & .support-method > i,
  & .about-points > div > i {
    display: grid;
    flex: 0 0 2.25rem;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.7rem;
    color: var(--accent-text);
    background: var(--accent-color);
    font-size: 1.1rem;
  }

  & .support-method h3,
  & .about-points strong {
    font-size: 0.9rem;
  }

  & .support-method p,
  & .about-points small {
    display: block;
    margin-top: 0.2rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    line-height: 1.45;
  }

  & .info-note {
    max-width: 38rem;
    margin-inline: auto;
  }
}

@keyframes page-surface-in {
  from {
    opacity: 0;
    transform: translateY(0.35rem);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar.open,
  .sidebar-backdrop,
  .settings-page:not([hidden]),
  .info-page:not([hidden]) {
    animation: none;
  }
}

.full-page-header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 2.75rem;
  margin-bottom: 24px;

  & h2 {
    position: absolute;
    left: 50%;
    margin: 0;
    font-size: 1.15rem;
    transform: translateX(-50%);
    text-align: center;
  }

  & .back-button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 0;
    border: none;
    outline: none;
    box-shadow: none;
    color: var(--accent-color);
    background: transparent;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 160ms ease, transform 160ms ease;

    &:hover,
    &:active {
      opacity: 0.8;
      transform: translateX(-2px);
    }
  }
}

.save-settings-btn {
  position: absolute;
  right: 0;
  top: 50%;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.45rem;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--accent-color);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transform: translateY(-50%);
  transition: opacity 160ms ease, transform 160ms ease, color 160ms ease;

  &:hover,
  &:active {
    opacity: 0.85;
    transform: translateY(-50%) scale(1.03);
    color: var(--accent-color);
  }

  & i {
    font-size: 0.9rem;
    color: inherit;
  }
}

.save-settings-btn[hidden] {
  display: none;
}

.settings-page {

  &>.settings-section,
  & .theme-page .theme-picker {
    width: 100%;
  }
}

.theme-page {
  & .theme-picker {
    width: min(100%, 34rem);
    margin: 0 auto;
  }
}

/* ==================== Settings Views ==================== */
.settings-section {
  display: grid;
  gap: 0.7rem;
  padding: 0.9rem;
  border: 1px solid color-mix(in srgb, var(--color-white) 7%, transparent);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--color-white) 2.5%, transparent);
}

.section-kicker {
  color: var(--text-color);
}

.settings-card {
  display: grid;
  gap: 0.65rem;
  padding: 0;
  border: 0;
  background: transparent;
}

.setting-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-size: 0.78rem;

  & small {
    grid-column: 1 / -1;
    margin-top: -0.4rem;
    color: var(--text);
    font-size: 0.7rem;
  }

  & select,
  & input[type="number"] {
    width: 7rem;
    padding: 0.5rem 0.65rem;
    border: 1px solid color-mix(in srgb, var(--color-white) 12%, transparent);
    border-radius: 8px;
    color: var(--text);
    background-color: var(--bg-color);
    outline: none;
  }

  & select {
    appearance: none;
    padding-right: 1.8rem;
    background-image: linear-gradient(45deg, transparent 50%, var(--color-slate-light) 50%), linear-gradient(135deg, var(--color-slate-light) 50%, transparent 50%);
    background-position: calc(100% - 12px) 52%, calc(100% - 8px) 52%;
    background-size: 4px 4px, 4px 4px;
    background-repeat: no-repeat;
  }
}

.toggle-row {
  position: relative;
  cursor: pointer;

  input {
    position: absolute;
    opacity: 0;
    pointer-events: none;

    &:checked+.setting-toggle {
      background: var(--accent-color);

      &::after {
        background: var(--accent-text);
        transform: translateX(1.2rem);
      }
    }
  }
}

.theme-picker {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
  padding: 1rem 0;
}

.theme-swatch {
  width: 50%;
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--color-white) 10%, transparent);
  border-radius: 75%;
  background: var(--swatch-color);
  box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--color-black) 12%, transparent);
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease;

  &:hover,
  &:focus-visible {
    border-color: var(--swatch-color);
    transform: scale(1.08);
    outline: none;
  }
}

.custom-theme {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 1rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid color-mix(in srgb, var(--color-white) 10%, transparent);
  border-radius: 999px;
  color: var(--text);
  background: color-mix(in srgb, var(--color-white) 5%, transparent);
  font-size: 0.78rem;
  cursor: pointer;

  & input {
    width: 1.65rem;
    height: 1.65rem;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: transparent;
    cursor: pointer;
  }
}

.export-button {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.35rem;
  padding: 0.75rem 0.85rem;
  border: 0;
  border-radius: 9px;
  color: var(--accent-text);
  background: var(--accent-color);
  font-weight: 700;
  cursor: pointer;

  & span {
    color: var(--accent-color);
    font-size: 1.1rem;
  }
}

/* ==================== Settings — Interactive Groups ==================== */
.settings-page {
  &>.settings-section+.settings-section {
    margin-top: 0.85rem;
  }
}

.settings-profile {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  align-items: center;
  gap: 0.85rem;

  .settings-profile-info {
    display: grid;
    gap: 0.15rem;

    strong {
      font-size: 0.98rem;
      font-weight: 700;
    }

    small {
      color: var(--text-muted);
      font-size: 0.72rem;
      line-height: 1.4;
    }
  }
}

.settings-group {
  padding: 0;

  &[open]>.settings-group-head .link-chevron {
    transform: rotate(180deg);
  }

  &>.settings-card {
    padding: 0.9rem;
    animation: settings-group-in 200ms ease-out;
  }

  .settings-group-head {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.9rem;
    list-style: none;
    border-radius: 12px;
    color: var(--text);
    font-size: 0.86rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 160ms ease;

    &::-webkit-details-marker {
      display: none;
    }

    &:hover {
      background: var(--glass-bg);
    }

    .settings-group-title {
      flex: 1 1 auto;
    }

    .link-chevron {
      display: grid;
      place-items: center;
      width: 1.4rem;
      height: 1.4rem;
      color: var(--accent-color);
      font-size: 0.95rem;
      transition: transform 220ms ease;
    }
  }
}

@keyframes settings-group-in {
  from {
    opacity: 0;
    transform: translateY(-0.3rem);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.setting-block {
  display: grid;
  gap: 0.5rem;
}

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

.theme-picker-inline {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.5rem;
  padding: 0.35rem 0 0.6rem;

  .theme-swatch {
    width: 100%;
  }
}

/* ==================== Appearance — Dark Mode Row ==================== */
.theme-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  margin: 0;
  padding: 0 0 0.85rem;
  border: 0;
  border-bottom: 1px solid var(--border-color);
  border-radius: 0;
  background: transparent;

  .settings-label {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 700;

    i {
      display: grid;
      place-items: center;
      width: 2rem;
      height: 2rem;
      border-radius: 9px;
      color: var(--accent-color);
      background: color-mix(in srgb, var(--accent-color) 14%, transparent);
      font-size: 1rem;
    }
  }

  .theme-switch {
    position: relative;
    display: inline-flex;
    flex: 0 0 auto;
    cursor: pointer;

    input {
      position: absolute;
      opacity: 0;
      pointer-events: none;

      &:focus-visible+.slider {
        outline: 2px solid var(--accent-color);
        outline-offset: 3px;
      }

      &:checked+.slider {
        background: color-mix(in srgb, var(--text) 22%, transparent);
        border-color: var(--border-color);

        .knob {
          background: var(--accent-color);
          border-color: var(--accent-color);
          color: var(--accent-text);
          box-shadow: 0 2px 8px color-mix(in srgb, var(--accent-color) 45%, transparent);
          transform: translateX(1.6rem);

          .icon-sun {
            opacity: 0;
            transform: rotate(90deg) scale(0.4);
          }

          .icon-moon {
            opacity: 1;
            transform: rotate(0deg) scale(1);
          }
        }
      }
    }

    .slider {
      position: relative;
      display: block;
      width: 3.4rem;
      height: 1.8rem;
      padding: 0.2rem;
      border: 1px solid var(--border-color);
      border-radius: 99px;
      background: color-mix(in srgb, var(--text) 12%, transparent);
      transition: background 320ms ease, border-color 320ms ease;
    }

    .knob {
      position: relative;
      display: grid;
      place-items: center;
      width: 1.4rem;
      height: 1.4rem;
      border: 1px solid var(--border-color);
      border-radius: 50%;
      color: var(--text);
      background: var(--card-bg);
      box-shadow: 0 2px 6px color-mix(in srgb, var(--color-black) 18%, transparent);
      transition: transform 320ms cubic-bezier(0.4, 0, 0.2, 1), background 320ms ease,
        border-color 320ms ease, color 320ms ease;

      i {
        position: absolute;
        font-size: 0.78rem;
        line-height: 1;
        transition: opacity 260ms ease, transform 320ms ease;
      }

      .icon-sun {
        opacity: 1;
        transform: rotate(0deg) scale(1);
      }

      .icon-moon {
        opacity: 0;
        transform: rotate(-90deg) scale(0.4);
      }
    }
  }
}

/* ==================== Appearance Border Radius Row ==================== */
.radius-row {
  border-top: 1px solid var(--border-color);
  padding-top: 0.85rem;

  summary {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    list-style: none;
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;

    &::-webkit-details-marker {
      display: none;
    }

    i {
      display: grid;
      place-items: center;
      width: 2rem;
      height: 2rem;
      border-radius: 9px;
      color: var(--accent-color);
      background: color-mix(in srgb, var(--accent-color) 14%, transparent);
      font-size: 1rem;
    }

    span:not(.radius-value):not(.radius-preview) {
      flex: 1 1 auto;
    }

    .radius-value {
      color: var(--accent-color);
      font-size: 0.78rem;
      font-weight: 800;
      font-variant-numeric: tabular-nums;
    }

    /* Live preview — a top-left corner arc that mirrors the current radius */
    .radius-preview {
      flex: 0 0 auto;
      width: 1.6rem;
      height: 1.6rem;
      margin-left: auto;
      border-top: 2px solid var(--accent-color);
      border-left: 2px solid var(--accent-color);
      border-top-left-radius: var(--radius);
      background: color-mix(in srgb, var(--accent-color) 14%, transparent);
      transition: border-top-left-radius 120ms ease;
    }
  }

  .radius-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 0.35rem;
    margin: 0.9rem 0 0.35rem;
    border-radius: 99px;
    background: color-mix(in srgb, var(--text) 14%, transparent);
    outline: none;
    cursor: pointer;
    transition: background 160ms ease;

    &::-webkit-slider-thumb {
      -webkit-appearance: none;
      appearance: none;
      width: 1.15rem;
      height: 1.15rem;
      border: 2px solid var(--accent-color);
      border-radius: 50%;
      background: var(--card-bg);
      box-shadow: 0 2px 6px color-mix(in srgb, var(--accent-color) 40%, transparent);
      cursor: pointer;
      transition: transform 160ms ease;
    }

    &::-moz-range-thumb {
      width: 1.15rem;
      height: 1.15rem;
      border: 2px solid var(--accent-color);
      border-radius: 50%;
      background: var(--card-bg);
      cursor: pointer;
    }

    &:active::-webkit-slider-thumb {
      transform: scale(1.15);
    }

    &:focus-visible::-webkit-slider-thumb {
      outline: 2px solid var(--accent-color);
      outline-offset: 2px;
    }
  }
}

/* Toggle track (base styles shared with checked state above) */
.setting-toggle {
  position: relative;
  width: 2.7rem;
  height: 1.5rem;
  flex: 0 0 auto;
  border-radius: 99px;
  background: var(--color-track);
  transition: background 160ms ease;

  &::after {
    display: block;
    width: 1.14rem;
    height: 1.14rem;
    margin: 0.18rem;
    border-radius: 50%;
    background: var(--color-white);
    content: "";
    transition: transform 160ms ease, background 160ms ease;
  }
}

.data-reset-row {
  display: grid;
  gap: 0.65rem;
  margin-top: 1rem;
}

.data-reset-row p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}