/* ═══════════════════════════════════════════════════════════════════
   controls.css  —  Site-wide interactive controls
   Loaded globally via header_js_css.php (after fa.css).

   ┌─ CANONICAL NAMING CONVENTION ────────────────────────────────────
   │  Prefix: fa-  (FattyAcids UI — not FontAwesome; FA icons always
   │  use fa-solid/fa-regular as companion class on <i> elements)
   │
   │  BUTTONS          fa-btn  fa-btn--primary  --danger  --sm
   │                   fa-btn--outline  --ghost  --icon  --add  --remove
   │
   │  SEGMENTED        fa-seg  (container)
   │                   fa-seg__opt  (option/button)
   │                   fa-seg--border  (outer-border variant)
   │
   │  TABS             fa-tabs  fa-tab  fa-tab-panel
   │                   fa-tabs--pills  (pill/rounded variant)
   │
   │  CHIPS            fa-chip  fa-chip-group
   │                   fa-chip--dark  (inverted variant)
   │
   │  FORM             fa-input  fa-input--search  fa-input--narrow
   │                   fa-check-row  fa-radio-row
   │
   │  ACCORDION        accordion-item  accordion-header  accordion-body
   │                   (no prefix — generic, widely understood)
   │
   │  TOGGLE SWITCH    fa-switch  (wraps <input> + .slider)
   │
   │  All legacy class names remain as multi-selector aliases so
   │  existing HTML/PHP does not need to change. New code should use
   │  the canonical fa- names. Per-component CSS may extend or override.
   │  FattyModel2D is self-contained and excluded from this system.
   └──────────────────────────────────────────────────────────────────*/


/* ═══════════════════════════════════════════════════════════════════
   1. BUTTONS
   ═══════════════════════════════════════════════════════════════════ */

/* ── 1a. Base button ───────────────────────────────────────────────
   fa-btn  (canonical)
   Legacy: p2-btn · c2-btn-secondary · c2-btn-ghost · cpt-tool-btn
           pf-reset · rt-action · fa-pp-options-btn
   ──────────────────────────────────────────────────────────────────*/
.fa-btn,
.p2-btn,
.c2-btn-secondary,
.c2-btn-ghost,
.cpt-tool-btn,
.pf-reset,
.rt-action {
    appearance: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border: 1px solid var(--border-color, #d1d5db);
    background: var(--bg-card, #fff);
    color: var(--text-main, #1a1a1a);
    border-radius: 6px;
    padding: 0.45rem 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 120ms, border-color 120ms, color 120ms;
    font-family: inherit;
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.2;
    box-sizing: border-box;
}
.fa-btn:hover,
.p2-btn:hover,
.c2-btn-secondary:hover,
.c2-btn-ghost:hover,
.cpt-tool-btn:hover,
.pf-reset:hover,
.rt-action:hover {
    background: var(--bg-body, #f3f4f6);
    border-color: #9ca3af;
}

/* disabled state */
.fa-btn:disabled, .fa-btn--disabled,
.p2-btn:disabled, .p2-btn--disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

/* profile-page options button — same base, slightly different padding */
.fa-pp-options-btn {
    appearance: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border: 1px solid #cbd5e1;
    background: var(--bg-card, #fff);
    color: #475569;
    border-radius: 6px;
    padding: 5px 12px;
    font-weight: 500;
    cursor: pointer;
    transition: background 120ms, color 120ms;
    font-family: inherit;
}
.fa-pp-options-btn:hover { background: #f1f5f9; color: var(--text-main, #0f172a); }


/* ── 1b. Primary button ────────────────────────────────────────────
   fa-btn--primary  (canonical)
   Legacy: p2-btn--primary · c2-btn-primary · cpt-tool-btn-primary
           rt-action-compare · fa-pp-btn
   ──────────────────────────────────────────────────────────────────*/
.fa-btn--primary,
.p2-btn--primary,
.c2-btn-primary,
.cpt-tool-btn-primary,
.rt-action-compare {
    background: var(--primary-color, #2563eb);
    border-color: var(--primary-color, #2563eb);
    color: #fff;
}
.fa-btn--primary:hover,
.p2-btn--primary:hover,
.c2-btn-primary:hover,
.cpt-tool-btn-primary:hover,
.rt-action-compare:hover {
    background: var(--primary-hover, #1d4ed8);
    border-color: var(--primary-hover, #1d4ed8);
}

/* Profile-page primary CTA (link styled as button) */
.fa-pp-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--primary-color, #2563eb);
    border: 1px solid var(--primary-color, #2563eb);
    color: #fff;
    text-decoration: none;
    padding: 7px 14px;
    border-radius: 6px;
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    font-family: inherit;
    transition: background 120ms, border-color 120ms;
}
.fa-pp-btn:hover { background: var(--primary-hover, #1d4ed8); }
.fa-pp-btn-ext { background: var(--bg-card, #fff); color: var(--primary-color, #2563eb); }
.fa-pp-btn-ext:hover { background: #eff6ff; }


/* ── 1c. Danger button ─────────────────────────────────────────────
   fa-btn--danger  (canonical)
   Legacy: p2-btn--danger · c2-btn-danger
   ──────────────────────────────────────────────────────────────────*/
.fa-btn--danger,
.p2-btn--danger,
.c2-btn-danger {
    background: var(--bg-card, #fff);
    border-color: #fca5a5;
    color: #b91c1c;
}
.fa-btn--danger:hover,
.p2-btn--danger:hover,
.c2-btn-danger:hover {
    background: #fee2e2;
    border-color: #ef4444;
    color: #991b1b;
}


/* ── 1d. Size modifiers ────────────────────────────────────────────*/
.fa-btn--sm,
.p2-btn--sm {
    padding: 0.3rem 0.6rem;
}


/* ── 1e. Outline / subtle button ───────────────────────────────────
   fa-btn--outline  (canonical)
   Legacy: btn-outline · c2-btn-outline · c2-flip-btn · p2-header-back
   ──────────────────────────────────────────────────────────────────*/
.fa-btn--outline,
.btn-outline,
.c2-btn-outline,
.c2-flip-btn,
.p2-header-back {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.32rem 0.7rem;
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 6px;
    background: var(--bg-card, #fff);
    color: var(--text-main, #1a1a1a);
    font-weight: 500;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
    font-family: inherit;
    white-space: nowrap;
    text-decoration: none;
}
.fa-btn--outline:hover,
.btn-outline:hover,
.c2-btn-outline:hover,
.c2-flip-btn:hover,
.p2-header-back:hover {
    border-color: var(--primary-color, #3b82f6);
    color: var(--primary-color, #3b82f6);
    background: var(--bg-body, #f3f4f6);
}
.c2-flip-btn.active {
    background: var(--primary-color, #3b82f6);
    color: #fff;
    border-color: var(--primary-color, #3b82f6);
}


/* ── 1f. Ghost / text button ───────────────────────────────────────
   fa-btn--ghost  (canonical)
   Legacy: reset-btn
   ──────────────────────────────────────────────────────────────────*/
.fa-btn--ghost,
.reset-btn {
    appearance: none;
    background: none;
    border: none;
    color: var(--primary-color, #3b82f6);
    cursor: pointer;
    font-family: inherit;
    padding: 0;
}
.fa-btn--ghost:hover { text-decoration: underline; }


/* ── 1g. Icon / close button ───────────────────────────────────────
   fa-btn--icon  (canonical) — frameless, square icon button
   Legacy: p2-close · c2-popup-close · close-col-btn · cpt-icon-btn
           c2-col-menu-btn
   ──────────────────────────────────────────────────────────────────*/
.fa-btn--icon,
.p2-close,
.c2-popup-close,
.close-col-btn {
    appearance: none;
    background: none;
    border: 0;
    line-height: 1;
    cursor: pointer;
    color: var(--text-muted, #6b7280);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.9rem;
    min-height: 1.9rem;
    font-size: 1.5rem;
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
    transition: background 120ms, color 120ms;
    font-family: inherit;
}
.fa-btn--icon:hover,
.p2-close:hover,
.c2-popup-close:hover,
.close-col-btn:hover {
    background: var(--border-color, #e5e7eb);
    color: var(--text-main, #111);
}

/* Small framed icon button (header actions) */
.cpt-icon-btn,
.c2-col-menu-btn {
    appearance: none;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted, #64748b);
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    line-height: 1;
    transition: background 120ms, color 120ms, border-color 120ms;
    font-family: inherit;
}
.cpt-icon-btn:hover,
.c2-col-menu-btn:hover {
    background: var(--bg-body, #f1f5f9);
    color: var(--text-main, #0f172a);
    border-color: var(--border-color, #e2e8f0);
}


/* ── 1h. Add / dashed affordance buttons ──────────────────────────
   fa-btn--add  (canonical — circular)
   Legacy: c2-btn-add
   ──────────────────────────────────────────────────────────────────*/
.fa-btn--add,
.c2-btn-add {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px dashed var(--border-color, #e2e8f0);
    background: var(--bg-card, #fff);
    color: var(--text-muted, #94a3b8);
    cursor: pointer;
    transition: all 0.15s;
    line-height: 1;
    font-family: inherit;
}
.fa-btn--add:hover,
.c2-btn-add:hover {
    border-color: var(--primary-color, #3b82f6);
    color: var(--primary-color, #3b82f6);
    background: #eff6ff;
}

/* Wide dashed add / action bar buttons */
.c2-btn-add-wide,
.c2-action-btn,
.c2-corner-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: 1.5px dashed var(--border-color, #e2e8f0);
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted, #94a3b8);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    font-family: inherit;
    appearance: none;
}
.c2-btn-add-wide { padding: 0.4rem 1rem; }
.c2-action-btn   { padding: 0.35rem 0.85rem; font-weight: 500; border-radius: 7px; }
.c2-corner-btn   { padding: 0.3rem 0.65rem; font-weight: 500; border-radius: 6px; text-align: left; display: block; width: 100%; }

.c2-btn-add-wide:hover,
.c2-action-btn:hover,
.c2-corner-btn:hover {
    border-color: var(--primary-color, #3b82f6);
    color: var(--primary-color, #3b82f6);
    background: rgba(59, 130, 246, 0.05);
}

/* Add-chart sidebar tile */
.c2-chart-col-add-btn {
    width: 82px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    padding: 0.6rem 0;
    border: 2px dashed var(--border-color, #e2e8f0);
    border-radius: 8px;
    background: none;
    color: var(--text-muted, #94a3b8);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s, background 0.15s;
    margin-top: 0.1rem;
    font-family: inherit;
    appearance: none;
}
.c2-chart-col-add-btn:hover {
    color: var(--primary-color, #3b82f6);
    border-color: var(--primary-color, #3b82f6);
    background: rgba(59, 130, 246, 0.05);
}


/* ── 1i. Remove / delete buttons ──────────────────────────────────
   fa-btn--remove  (canonical — inline row remove)
   Legacy: c2-remove-profile-btn · c2-si-remove-btn · c2-chart-col-delete
   ──────────────────────────────────────────────────────────────────*/
.fa-btn--remove,
.c2-remove-profile-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: none;
    border: 1px solid var(--border-color, #e2e8f0);
    color: var(--text-muted, #94a3b8);
    border-radius: 4px;
    padding: 0.15rem 0.45rem;
    cursor: pointer;
    transition: all 0.15s;
    margin-top: 0.25rem;
    font-family: inherit;
    appearance: none;
}
.fa-btn--remove:hover,
.c2-remove-profile-btn:hover { border-color: #ef4444; color: #ef4444; background: #fef2f2; }

.c2-si-remove-btn {
    flex-shrink: 0;
    margin-left: auto;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted, #94a3b8);
    line-height: 1;
    padding: 0.1rem 0.3rem;
    border-radius: 4px;
    opacity: 0;
    transition: all 0.15s;
    appearance: none;
    font-family: inherit;
}
.c2-selected-item:hover .c2-si-remove-btn { opacity: 1; }
.c2-si-remove-btn:hover { color: #ef4444; background: rgba(239, 68, 68, 0.1); }

.c2-chart-col-delete {
    position: absolute;
    top: -7px; right: -7px;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: #ef4444;
    color: #fff;
    border: 1.5px solid var(--bg-body, #f4f6f8);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s;
    z-index: 3;
    appearance: none;
    font-family: inherit;
}
.c2-chart-col-item:hover .c2-chart-col-delete { opacity: 1; pointer-events: auto; }


/* ── 1j. Preset / card buttons ─────────────────────────────────────*/
.c2-preset-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    padding: 1.25rem 1.5rem;
    width: 170px;
    border: 1.5px solid var(--border-color, #e2e8f0);
    border-radius: 12px;
    background: var(--bg-card, #fff);
    cursor: pointer;
    text-align: center;
    transition: all 0.18s;
    color: var(--text-main, #1a1a1a);
    font-family: inherit;
    appearance: none;
}
.c2-preset-btn:hover {
    border-color: var(--primary-color, #3b82f6);
    background: rgba(59, 130, 246, 0.04);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
.c2-preset-icon  { line-height: 1; }
.c2-preset-label { font-weight: 700; color: var(--text-main); }
.c2-preset-desc  { color: var(--text-muted); line-height: 1.4; }


/* ── 1k. Toolbar / extras layout ──────────────────────────────────*/
.cpt-toolbar-extras {
    display: inline-flex;
    gap: 6px;
    margin-left: 12px;
}
.rt-actions { margin-left: auto; display: flex; gap: 6px; }


/* ── 1l. Inline "Switch FA" trigger button (fa_page heading) ───────*/
.pqfa-trigger {
    appearance: none;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    margin-left: 0.6rem;
    padding: 0.2rem 0.6rem;
    border: 1px solid var(--border-color, #d1d5db);
    border-radius: 999px;
    background: var(--bg-card, #fff);
    color: var(--text-muted, #6b7280);
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
    font-family: inherit;
    white-space: nowrap;
    vertical-align: middle;
    line-height: 1.4;
}
.pqfa-trigger:hover {
    border-color: var(--primary-color, #3b82f6);
    color: var(--primary-color, #3b82f6);
    background: var(--bg-body, #f3f4f6);
}


/* ═══════════════════════════════════════════════════════════════════
   2. SEGMENTED CONTROLS (toggle groups)
   ═══════════════════════════════════════════════════════════════════ */

/* ── 2a. Pill-background segmented control ─────────────────────────
   fa-seg  (canonical container)
   fa-seg__opt  (canonical option/button)
   Legacy: c2-toggle-group / c2-toggle · ec-toggle-group / ec-toggle
   ──────────────────────────────────────────────────────────────────*/
.fa-seg,
.c2-toggle-group,
.ec-toggle-group {
    display: inline-flex;
    background: var(--bg-body, #f3f4f6);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 6px;
    padding: 0.2rem;
    gap: 0.15rem;
    flex-wrap: wrap;
}

.fa-seg__opt,
.c2-toggle,
.ec-toggle {
    padding: 0.35rem 0.75rem;
    border: none;
    background: transparent;
    color: var(--text-muted, #6b7280);
    font-weight: 500;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.15s;
    font-family: inherit;
    appearance: none;
}
.fa-seg__opt:hover,
.c2-toggle:hover,
.ec-toggle:hover { background: rgba(0, 0, 0, 0.05); color: var(--text-main, #111); }

.fa-seg__opt.active,
.c2-toggle.active,
.ec-toggle.active {
    background: var(--primary-color, #3b82f6);
    color: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}


/* ── 2b. Border-only segmented control ────────────────────────────
   fa-seg--border  (canonical container)
   fa-seg--border .fa-seg__opt  (canonical option)
   Legacy: pb-view-toggle / pb-view-btn · fa-pp-chart-toggle / fa-pp-toggle-btn
   ──────────────────────────────────────────────────────────────────*/
.fa-seg--border,
.pb-view-toggle,
.fa-pp-chart-toggle {
    display: inline-flex;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    overflow: hidden;
}

.fa-seg--border .fa-seg__opt,
.pb-view-btn,
.fa-pp-toggle-btn {
    background: var(--bg-card, #fff);
    border: 0;
    padding: 5px 12px;
    cursor: pointer;
    color: #475569;
    font-family: inherit;
    transition: background 120ms, color 120ms;
    appearance: none;
}
.fa-seg--border .fa-seg__opt + .fa-seg__opt,
.pb-view-btn + .pb-view-btn,
.fa-pp-toggle-btn + .fa-pp-toggle-btn { border-left: 1px solid #cbd5e1; }

.fa-seg--border .fa-seg__opt.active,
.pb-view-btn.active,
.fa-pp-toggle-btn.active { background: var(--primary-color, #2563eb); color: #fff; }


/* ── 2c. Source/filter segmented buttons ──────────────────────────
   Legacy: source-btn
   ──────────────────────────────────────────────────────────────────*/
.source-btn {
    background: var(--bg-body, #f3f4f6);
    border: 1px solid var(--border-color, #e2e8f0);
    padding: 0.4rem 0.8rem;
    cursor: pointer;
    color: var(--text-muted, #6b7280);
    font-family: inherit;
    transition: background 120ms, color 120ms;
    appearance: none;
}
.source-btn:first-child { border-radius: 6px 0 0 6px; }
.source-btn:last-child  { border-radius: 0 6px 6px 0; border-left: none; }
.source-btn.active { background: var(--primary-color, #3b82f6); color: #fff; border-color: var(--primary-color, #3b82f6); }


/* ── 2d. Page nav-mode toggle (fa_page) ────────────────────────────*/
.fap-nav-toggle {
    display: inline-flex;
    background: var(--bg-card, #fff);
    border: 1px solid var(--border-color, #e2e6f0);
    border-radius: 8px;
    padding: 3px;
    gap: 2px;
}
.fap-nav-toggle button {
    background: none;
    border: none;
    padding: 0.45rem 0.85rem;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-muted, #606770);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: background-color .12s, color .12s;
    font-family: inherit;
    appearance: none;
}
.fap-nav-toggle button:hover { color: var(--text-main, #1a1f2e); background: rgba(0, 123, 255, 0.08); }
.fap-nav-toggle button.active { background: #007bff; color: #fff; }
.fap-nav-toggle button i { }


/* ── 2e. Chart-type icon toggle ────────────────────────────────────*/
.ec-toggle-group--icons { gap: 0.4rem; }
.ec-toggle--icon {
    padding: 0.35rem;
    width: 46px; height: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.ec-toggle--icon img { width: 28px; height: 28px; object-fit: contain; display: block; opacity: 0.85; }
.ec-toggle--icon:hover img { opacity: 1; }
.ec-toggle--icon.active img { filter: brightness(0) invert(1); opacity: 1; }


/* ── 2f. Chart-type grid ───────────────────────────────────────────*/
.c2-chart-type-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.6rem;
}
.c2-chart-type-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    padding: 0.65rem 0.5rem;
    border: 2px solid var(--border-color, #e2e8f0);
    border-radius: 7px;
    cursor: pointer;
    background: var(--bg-body, #f3f4f6);
    transition: all 0.15s;
    color: var(--text-main, #1a1a1a);
    font-weight: 500;
    font-family: inherit;
    appearance: none;
}
.c2-chart-type-btn input { display: none; }
.c2-chart-type-btn svg { display: block; width: 40px; height: 30px; margin: 0 auto 0.2rem; }
.c2-chart-type-btn:hover { border-color: var(--primary-color, #3b82f6); }
.c2-chart-type-btn.active {
    border-color: var(--primary-color, #3b82f6);
    background: #eff6ff;
    color: var(--primary-color, #3b82f6);
}


/* ═══════════════════════════════════════════════════════════════════
   3. TABS
   ═══════════════════════════════════════════════════════════════════ */

/* ── 3a. Underline tab bar ─────────────────────────────────────────
   fa-tabs  (canonical bar)
   fa-tab   (canonical button)
   Legacy: c2-data-tabs / c2-data-tab · pfa-tabs / pfa-tab
   ──────────────────────────────────────────────────────────────────*/
.fa-tabs,
.c2-data-tabs,
.pfa-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color, #e5e7eb);
    flex-shrink: 0;
}
.pfa-tabs {
    align-items: stretch;
    padding: 0 1rem;
    background: var(--bg-card, #fff);
    gap: 0.25rem;
    margin-top: 0.5rem;
}

.fa-tab,
.c2-data-tab,
.pfa-tab {
    flex: 1;
    padding: 0.5rem 0.25rem;
    border: none;
    background: transparent;
    color: var(--text-muted, #6b7280);
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.15s, border-color 0.15s;
    white-space: nowrap;
    font-family: inherit;
    appearance: none;
}
/* pfa-tab overrides */
.pfa-tab { flex: none; padding: 0.7rem 1.1rem; margin-bottom: 0; }

.fa-tab:hover,
.c2-data-tab:hover,
.pfa-tab:hover { color: var(--text-main, #111); }

.fa-tab.active,
.c2-data-tab.active,
.pfa-tab.active,
.active-tab {
    color: var(--primary-color, #2563eb);
    border-bottom-color: var(--primary-color, #2563eb);
}
/* Tailwind-based active-tab (perox.css) needs !important to win specificity race */
.active-tab {
    color: #2563eb !important;
    border-bottom-color: #2563eb !important;
}


/* ── 3b. Tab panels ────────────────────────────────────────────────
   fa-tab-panel  (canonical)
   Legacy: c2-tab-panel · tab-content
   ──────────────────────────────────────────────────────────────────*/
.fa-tab-panel,
.c2-tab-panel {
    padding: 0.75rem 0 0.5rem;
    overflow-y: auto;
    flex: 1;
}
.fa-tab-panel[hidden],
.c2-tab-panel[hidden] { display: none; }

/* Bootstrap-style .tab-content hidden by class */
.tab-content.hidden { display: none; }


/* ── 3c. Pill-style section tabs ───────────────────────────────────
   fa-tabs--pills  (canonical)
   Legacy: c2-sfa-section-tabs / c2-sfa-section-tab
   ──────────────────────────────────────────────────────────────────*/
.fa-tabs--pills,
.c2-sfa-section-tabs {
    display: flex;
    gap: 0.4rem;
    padding: 0 0 0.65rem;
    flex-shrink: 0;
}
.fa-tabs--pills .fa-tab,
.c2-sfa-section-tab {
    flex: none;
    padding: 0.28rem 0.85rem;
    border: 1.5px solid var(--border-color, #e2e8f0);
    border-radius: 20px;
    background: transparent;
    color: var(--text-muted, #6b7280);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    font-family: inherit;
    border-bottom: 1.5px solid var(--border-color, #e2e8f0);
    margin-bottom: 0;
    appearance: none;
}
.fa-tabs--pills .fa-tab:hover,
.c2-sfa-section-tab:hover { color: var(--text-main, #111); border-color: var(--text-muted, #6b7280); }
.fa-tabs--pills .fa-tab.active,
.c2-sfa-section-tab.active {
    background: var(--primary-color, #3b82f6);
    color: #fff;
    border-color: var(--primary-color, #3b82f6);
}


/* ── 3d. Page top-tabs bar (fa_page) ──────────────────────────────*/
.fap-top-tabs {
    display: none;
    gap: 0;
    flex-wrap: wrap;
    border-bottom: 2px solid var(--border-color, #e2e6f0);
    margin: 0 0 1.25rem 0;
    position: sticky;
    top: 0;
    background: var(--bg-body, #f4f6f8);
    z-index: 30;
    padding-top: 0.25rem;
}
.fap-top-tabs button {
    background: none;
    border: none;
    padding: 0.7rem 1.1rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-muted, #606770);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    white-space: nowrap;
    font-family: inherit;
    appearance: none;
}
.fap-top-tabs button:hover { color: #007bff; }
.fap-top-tabs button.active { color: #007bff; border-bottom-color: #007bff; }


/* ── 3e. Side menu navigation (fa_page) ────────────────────────────*/
.fap-side-menu button {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 0.65rem 0.9rem;
    margin-bottom: 0.15rem;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-main, #1a1f2e);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: inherit;
    transition: background 0.12s, color 0.12s;
    appearance: none;
}
.fap-side-menu button:hover { background: rgba(0, 123, 255, 0.08); color: #007bff; }
.fap-side-menu button.active { background: #007bff; color: #fff; }
.fap-side-menu button i { width: 18px; text-align: center; }


/* ═══════════════════════════════════════════════════════════════════
   4. CHIPS / FILTER PILLS
   ═══════════════════════════════════════════════════════════════════ */

/* ── 4a. Chip container ────────────────────────────────────────────
   fa-chip-group  (canonical)
   Legacy: chip-grid · pf-chips · pfa-pill-group
   ──────────────────────────────────────────────────────────────────*/
.fa-chip-group,
.chip-grid,
.pf-chips,
.pfa-pill-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}


/* ── 4b. Filter chip / pill ────────────────────────────────────────
   fa-chip  (canonical)
   Legacy: filter-chip · pf-chip · pfa-pill
   ──────────────────────────────────────────────────────────────────*/
.fa-chip,
.filter-chip,
.pf-chip,
.pfa-pill {
    padding: 0.22rem 0.7rem;
    border: 1px solid var(--border-color, #d1d5db);
    border-radius: 999px;
    cursor: pointer;
    background: var(--bg-card, #fff);
    color: var(--text-main, #374151);
    user-select: none;
    transition: background 120ms, color 120ms, border-color 120ms;
    line-height: 1.1;
    font-family: inherit;
    appearance: none;
}
/* filter-chip is slightly larger */
.filter-chip { padding: 0.4rem 0.8rem; }

.fa-chip:hover,
.filter-chip:hover,
.pf-chip:hover,
.pfa-pill:hover { border-color: var(--text-muted, #6b7280); }

.fa-chip.active,
.pf-chip.active,
.pfa-pill.active {
    background: var(--primary-color, #2563eb);
    border-color: var(--primary-color, #2563eb);
    color: #fff;
    font-weight: 600;
}
/* fa.css filter-chip uses lighter active tint */
.filter-chip.active {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color, #3b82f6);
    border-color: var(--primary-color, #3b82f6);
}

.pf-chip-count { margin-left: 5px; opacity: 0.8; }


/* ── 4c. Dark / inverted chip ──────────────────────────────────────
   fa-chip--dark  (canonical)
   Legacy: filter-pill
   ──────────────────────────────────────────────────────────────────*/
.fa-chip--dark,
.filter-pill {
    background: var(--bg-body, #f3f4f6);
    border: 1px solid var(--border-color, #e2e8f0);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    cursor: pointer;
    color: var(--text-main, #1a1a1a);
    font-family: inherit;
    appearance: none;
    transition: background 120ms, color 120ms;
}
.fa-chip--dark.active,
.filter-pill.active {
    background: var(--text-main, #1a1a1a);
    color: var(--bg-card, #fff);
    border-color: var(--text-main, #1a1a1a);
}


/* ═══════════════════════════════════════════════════════════════════
   5. FORM ELEMENTS
   ═══════════════════════════════════════════════════════════════════ */

/* ── 5a. Base text / select input ──────────────────────────────────
   fa-input  (canonical)
   Legacy: ec-input · select-box · fa-pp-variants-select
   ──────────────────────────────────────────────────────────────────*/
.fa-input,
.ec-input,
.select-box,
.fa-pp-variants-select {
    width: 100%;
    border: 1px solid var(--border-color, #d1d5db);
    border-radius: 6px;
    padding: 0.4rem 0.6rem;
    font-family: inherit;
    background: var(--bg-card, #fff);
    color: var(--text-main, #1a1a1a);
    box-sizing: border-box;
    transition: border-color 120ms;
    appearance: none;
}
.fa-input:focus,
.ec-input:focus,
.fa-pp-variants-select:focus {
    border-color: var(--primary-color, #3b82f6);
    outline: 2px solid rgba(59, 130, 246, 0.25);
    outline-offset: 0;
}
.fa-input--narrow,
.ec-input--narrow { width: auto; min-width: 200px; }


/* ── 5b. Search inputs ─────────────────────────────────────────────
   fa-input--search  (canonical — no icon indentation)
   Legacy: search-box input · c2-search-input · pfa-search · pf-search
   ──────────────────────────────────────────────────────────────────*/
.search-box { position: relative; margin-bottom: 1.5rem; }

.fa-input--search,
.search-box input,
.c2-search-input,
.pfa-search,
.pf-search {
    width: 100%;
    padding: 0.6rem 0.6rem 0.6rem 2rem;
    border: 1px solid var(--border-color, #d1d5db);
    border-radius: 6px;
    background: var(--bg-body, #f3f4f6);
    color: var(--text-main, #1a1a1a);
    font-family: inherit;
    box-sizing: border-box;
    transition: border-color 120ms;
    appearance: none;
}
/* Per-component padding overrides */
.fa-input--search { padding: 0.5rem 0.75rem; }   /* no icon — use without .search-box wrapper */
.c2-search-input  { padding: 0.5rem 0.75rem; margin-bottom: 0.4rem; }
.pf-search        { padding: 8px 12px; }
.pfa-search       { width: 260px; padding: 0.4rem 0.7rem; outline: none; }

.fa-input--search:focus,
.search-box input:focus,
.c2-search-input:focus,
.pfa-search:focus,
.pf-search:focus {
    border-color: var(--primary-color, #3b82f6);
    outline: none;
}
.pf-search:focus { outline: 2px solid rgba(147, 197, 253, 0.6); }

.search-box i {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted, #6b7280);
}

.c2-search-hint {
    color: var(--text-muted, #6b7280);
    margin-bottom: 0.5rem;
    font-style: italic;
}


/* ── 5c. Range inputs ──────────────────────────────────────────────*/
.range-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
}
.range-inputs input {
    width: 60px;
    padding: 0.4rem;
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 4px;
    text-align: center;
    background: var(--bg-body, #f3f4f6);
    color: var(--text-main, #1a1a1a);
    font-family: inherit;
}
.range-inputs span { color: var(--text-muted, #6b7280); }


/* ── 5d. Form layout helpers ────────────────────────────────────────
   ec-form-row / ec-label (edit chart — canonical layout for labeled rows)
   ──────────────────────────────────────────────────────────────────*/
.ec-form-row {
    display: grid;
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 0.8rem;
    align-items: start;
    margin-bottom: 0.85rem;
}
.ec-label {
    font-weight: 600;
    color: var(--text-main, #374151);
    padding-top: 0.45rem;
}
.ec-mini-label  { color: #4b5563; margin-right: 0.3rem; }
.ec-options-row { display: flex; gap: 1.2rem; flex-wrap: wrap; }


/* ── 5e. Checkboxes ────────────────────────────────────────────────
   fa-check-row  (canonical)
   Legacy: checkbox-row · c2-check-row · checkbox-label · ec-checkbox
   ──────────────────────────────────────────────────────────────────*/
.fa-check-row,
.checkbox-row,
.c2-check-row,
.checkbox-label,
.ec-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-main, #374151);
    cursor: pointer;
    font-weight: 500;
    user-select: none;
}
.checkbox-row   { margin-bottom: 0.5rem; }
.checkbox-label { gap: 5px; }

.fa-check-row input,
.checkbox-row input,
.c2-check-row input[type="checkbox"] {
    accent-color: var(--primary-color, #3b82f6);
    flex-shrink: 0;
}
.checkbox-row input { margin-right: 0.25rem; transform: scale(1.1); }
.c2-check-row input[type="checkbox"] { width: 15px; height: 15px; cursor: pointer; }

.checkbox-row:hover { color: var(--primary-color, #3b82f6); }

.c2-check-hint {
    width: 100%;
    margin-top: 0.3rem;
    color: var(--text-muted, #6b7280);
    font-style: italic;
    line-height: 1.4;
}


/* ── 5f. Radio rows ────────────────────────────────────────────────
   fa-radio-row  (canonical)
   Legacy: c2-radio-label
   ──────────────────────────────────────────────────────────────────*/
.fa-radio-row,
.c2-radio-label {
    display: flex;
    align-items: baseline;
    gap: 0.45rem;
    padding: 0.35rem 0.6rem;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-main, #1a1a1a);
    transition: background 0.12s;
}
.fa-radio-row:hover,
.c2-radio-label:hover { background: var(--bg-body, #f3f4f6); }
.fa-radio-row input[type="radio"],
.c2-radio-label input[type="radio"] {
    accent-color: var(--primary-color, #3b82f6);
    flex-shrink: 0;
    margin-top: 1px;
}
.c2-radio-sub {
    color: var(--text-muted, #6b7280);
    font-weight: 400;
}


/* ── 5g. Scrollable checkbox list ──────────────────────────────────*/
.c2-key-picker {
    margin-top: 0.5rem;
    max-height: 160px;
    overflow-y: auto;
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 6px;
    background: var(--bg-body, #f3f4f6);
}
.c2-key-picker label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.7rem;
    color: var(--text-main, #1a1a1a);
    cursor: pointer;
    border-bottom: 1px solid var(--border-color, #e2e8f0);
    transition: background 0.1s;
}
.c2-key-picker label:last-child { border-bottom: none; }
/* [repair 20260715-repair] File was hard-truncated mid-declaration here. The rule above is reconstructed from context (base '.c2-key-picker label' sets border-bottom, so :last-child removes it). Any further rules after this point are lost. */