// ── Vertical sub-tab layout ───────────────────────────────────────────────────
// Reusable panel: left nav rail + right content area.
// HTML structure:
//   <div class="stab-shell" id="some-id">
//     <nav class="stab-nav">
//       <button class="stab-btn" data-stab="foo"><span class="stab-icon">⊞</span> Foo</button>
//     </nav>
//     <div class="stab-body">
//       <div class="stab-pane" data-stab="foo">…content…</div>
//     </div>
//   </div>
// JS: sub-tabs.js initialises all .stab-shell elements, toggles .active.
// Form fields in hidden panes still submit (visibility:hidden, not display:none).

.stab-shell {
  display: flex;
  align-items: stretch;
  background: var(--color-background);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  margin-bottom: 1.5rem;
}

// ── Left nav rail ─────────────────────────────────────────────────────────────
.stab-nav {
  display: flex;
  flex-direction: column;
  width: 11rem;
  flex-shrink: 0;
  padding: 0.75rem 0;
  gap: 1px;
  background: linear-gradient(180deg,
    rgba(0, 0, 0, 0.03) 0%,
    rgba(0, 0, 0, 0.05) 100%
  );
  border-right: 1px solid rgba(0, 0, 0, 0.07);
}

.stab-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.9rem 0.65rem 1rem;
  width: 100%;
  background: none;
  border: none;
  border-left: 3px solid transparent;
  border-radius: 0;
  cursor: pointer;
  font: inherit;
  color: var(--color-text);
  text-align: left;
  opacity: 0.65;
  transition: background 0.12s ease, opacity 0.12s ease, border-color 0.12s ease, color 0.12s ease;

  &:hover {
    background: rgba(0, 0, 0, 0.04);
    opacity: 0.85;
  }

  &.active {
    border-left-color: var(--color-menu-accent);
    background: rgba(237, 89, 0, 0.07);
    color: var(--color-menu-accent);
    font-weight: 700;
    opacity: 1;
  }

  .stab-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.1rem;
    flex-shrink: 0;
    opacity: 0.8;

    svg {
      width: 0.95rem;
      height: 0.95rem;
      stroke: currentColor;
      fill: none;
    }
  }
}

// ── Right content area ────────────────────────────────────────────────────────
.stab-body {
  flex: 1;
  min-width: 0;
  padding: 1.4rem 1.6rem;
  overflow-x: hidden;
}

// ── Individual pane — hidden but field values still submitted ─────────────────
.stab-pane {
  visibility: hidden;
  height: 0;
  overflow: hidden;

  &.active {
    visibility: visible;
    height: auto;
    overflow: visible;
    animation: stab-enter 0.16s ease both;
  }
}

@keyframes stab-enter {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

// ── Generic overview pane layout (hero + feature cards + CTA) ─────────────────
.stab-overview-hero {
  margin-bottom: 1.5rem;

  h3 {
    margin: 0 0 0.3rem;
    font-size: 1.05rem;
  }

  .stab-overview-glyph {
    color: var(--color-menu-accent);
    margin-right: 0.2rem;

    svg {
      width: 1.1rem;
      height: 1.1rem;
      stroke: currentColor;
      fill: none;
      vertical-align: -0.15em;
    }
  }

  p {
    margin: 0;
    font-size: 0.88rem;
    color: var(--color-text-input-description);
    max-width: 44rem;
    line-height: 1.55;
  }
}

.stab-overview-features {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin-bottom: 1.6rem;
}

.stab-overview-feature {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.022);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: background 0.12s ease;

  &:hover {
    background: rgba(0, 0, 0, 0.035);
  }

  .stab-overview-icon {
    width: 1.6rem;
    flex-shrink: 0;
    padding-top: 0.05rem;
    opacity: 0.7;
    display: flex;
    justify-content: center;

    svg {
      width: 1.3rem;
      height: 1.3rem;
      stroke: currentColor;
      fill: none;
    }
  }

  .stab-overview-text {
    > strong {
      display: block;
      margin-bottom: 0.2rem;
    }

    p {
      color: var(--color-text-input-description);
    }
  }
}

.stab-overview-disclaimer {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin: 0 0 1.1rem;
  padding: 0.85rem 1rem;
  border-radius: 6px;
  border: 1px solid rgba(211, 136, 0, 0.35);
  background: rgba(255, 180, 0, 0.07);

  .stab-disclaimer-icon {
    flex-shrink: 0;
    padding-top: 0.05rem;
    color: #c07800;

    svg {
      width: 1.2rem;
      height: 1.2rem;
      stroke: currentColor;
      fill: none;
    }
  }

  .stab-disclaimer-body {
    font-size: 0.85rem;
    line-height: 1.55;

    > strong {
      display: block;
      margin-bottom: 0.35rem;
      color: #8a5500;
      font-size: 0.87rem;
    }

    p {
      margin: 0 0 0.45rem;
      color: var(--color-text-input-description);
    }

    ul {
      margin: 0 0 0.6rem;
      padding-left: 1.25rem;
      color: var(--color-text-input-description);

      li {
        margin-bottom: 0.2rem;
      }
    }
  }

  .stab-disclaimer-check {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
    cursor: pointer;
    font-size: 0.82rem;
    color: var(--color-text-input-description);
    font-weight: 600;

    input[type="checkbox"] {
      flex-shrink: 0;
      margin-top: 0.18rem;
      cursor: pointer;
    }
  }
}

.stab-overview-cta {
  margin-top: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.stab-configured-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background: rgba(39, 174, 96, 0.09);
  border: 1px solid rgba(39, 174, 96, 0.28);
  border-radius: 4px;
  color: #2a7a4e;
  font-size: 0.82rem;
  font-weight: 600;
}

// ── Section header inside a pane ──────────────────────────────────────────────
.stab-section-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  opacity: 0.45;
  margin: 1.4rem 0 0.6rem;

  &:first-child {
    margin-top: 0;
  }
}

// ── Mobile: stack nav above content, buttons stay vertical ───────────────────
@media (max-width: 600px) {
  .stab-shell {
    flex-direction: column;
    min-height: unset;
  }

  .stab-nav {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
    padding: 0.4rem 0;
  }

  .stab-body {
    padding-left: 1rem;
  }
}

// ── LLM Usage pane — stat cards ───────────────────────────────────────────────
.llm-usage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 0.9rem;
  margin-bottom: 1.4rem;
}

.llm-stat-card {
  padding: 1rem 1.1rem 0.85rem;
  border-radius: 7px;
  background: rgba(0, 0, 0, 0.025);
  border: 1px solid rgba(0, 0, 0, 0.07);

  .llm-stat-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    opacity: 0.4;
    margin-bottom: 0.4rem;
  }

  .llm-stat-value {
    font-size: 1.65rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 0.25rem;
  }

  .llm-stat-sub {
    font-size: 0.79rem;
    opacity: 0.5;
  }

  .llm-stat-budget-text {
    font-size: 0.77rem;
    opacity: 0.55;
    margin-top: 0.3rem;
  }
}

.llm-stat-bar-wrap {
  height: 4px;
  border-radius: 2px;
  background: rgba(0, 0, 0, 0.1);
  overflow: hidden;
  margin-top: 0.65rem;
}

.llm-stat-bar-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 0.5s ease;

  &.bar-ok   { background: #27ae60; }
  &.bar-warn { background: #e67e22; }
  &.bar-over { background: #c0392b; }
}

// ── Usage settings rows ────────────────────────────────────────────────────────
.llm-usage-settings {
  border-top: 1px solid rgba(0, 0, 0, 0.07);
  padding-top: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.llm-usage-row {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  flex-wrap: wrap;

  .llm-usage-row-label {
    font-size: 0.82rem;
    font-weight: 600;
    opacity: 0.6;
    min-width: 12rem;
    flex-shrink: 0;
  }

  .llm-usage-row-value {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-size: 0.88rem;
  }
}

.llm-field-hint {
  font-size: 0.8rem;
  opacity: 0.55;
}

.llm-env-badge {
  font-size: 0.79rem;
  opacity: 0.6;
}

.llm-budget-alert {
  color: #c0392b;
  font-weight: 600;
  font-size: 0.88rem;
  margin: 0 0 1rem;
}

.llm-no-usage {
  opacity: 0.5;
  font-style: italic;
  font-size: 0.88rem;
  margin-bottom: 1rem;
}

// ── Dark mode ─────────────────────────────────────────────────────────────────
html[data-darkmode="true"] {
  .stab-shell {
    border-color: rgba(255, 255, 255, 0.07);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  }

  .stab-nav {
    background: linear-gradient(180deg,
      rgba(255, 255, 255, 0.025) 0%,
      rgba(255, 255, 255, 0.04) 100%
    );
    border-right-color: rgba(255, 255, 255, 0.07);
  }

  .stab-btn {
    &:hover {
      background: rgba(255, 255, 255, 0.05);
    }

    &.active {
      background: rgba(237, 89, 0, 0.12);
    }
  }

  .stab-overview-feature {
    background: rgba(255, 255, 255, 0.025);
    border-color: rgba(255, 255, 255, 0.05);

    &:hover {
      background: rgba(255, 255, 255, 0.04);
    }
  }

  .stab-configured-badge {
    background: rgba(39, 174, 96, 0.1);
    border-color: rgba(39, 174, 96, 0.22);
    color: #5db880;
  }

  .stab-overview-disclaimer {
    border-color: rgba(255, 190, 50, 0.22);
    background: rgba(255, 180, 0, 0.05);

    .stab-disclaimer-icon {
      color: #c9963a;
    }

    .stab-disclaimer-body > strong {
      color: #c9a050;
    }
  }

  .llm-stat-card {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.07);
  }

  .llm-stat-bar-wrap {
    background: rgba(255, 255, 255, 0.1);
  }

  .llm-usage-settings {
    border-top-color: rgba(255, 255, 255, 0.07);
  }
}
