/* ═══════════════════════════════════════════════════════════════════
   B.1ONIC Design System — tokens + components
   Single source of truth. Pages must NOT define :root color tokens.
   Spec: docs/UI_POLISH_DESIGN_SPEC.md   Brand: CMBG3 (docs/branding/)
   Dark (default) = brand-navy family. Light = brand ivory + navy ink.
   ═══════════════════════════════════════════════════════════════════ */

:root {
    /* Typography */
    --font-ui: "Segoe UI Variable Text", "Segoe UI", -apple-system, "Helvetica Neue", Arial, sans-serif;
    --font-display: "Segoe UI Variable Display", "Segoe UI", -apple-system, sans-serif;
    --font-numeric: var(--font-ui); /* pair with font-variant-numeric: tabular-nums */

    /* Brand constants (theme-invariant) */
    --brand-navy: #252D4F;
    --brand-gold: #CDB78E;
    --brand-gold-deep: #B99C66;
    --brand-slate: #677D85;
    --brand-ivory: #F9F9F7;
    --brand-facet: #536575;

    /* ── DARK THEME (default) ────────────────────────────────────── */
    /* Legacy aliases (JS-injected inline styles reference these) */
    --void: #0B0E1F;
    --abyss: #0E1226;
    --deep: #141830;
    --surface: #1D2340;
    --elevated: #252D4F;

    /* Semantic surfaces */
    --bg-app: #10142A;
    --bg-shell: #141830;
    --bg-workspace: #10142A;
    --bg-card: #1D2340;
    --bg-elevated: #252D4F;
    --bg-input: #141830;
    --bg-input-focus: #10142A;
    --bg-table-row-hover: rgba(205,183,142,0.06);
    --bg-table-row-alt: rgba(249,249,247,0.025);

    /* Borders */
    --border: rgba(146,163,214,0.20);
    --border-subtle: rgba(146,163,214,0.10);
    --border-strong: rgba(146,163,214,0.32);
    --border-active: rgba(205,183,142,0.55);

    /* Chrome (top nav) */
    --chrome-border: rgba(146,163,214,0.22);
    --chrome-text: rgba(249,249,247,0.55);
    --chrome-text-hover: rgba(249,249,247,0.9);
    --chrome-bg-hover: rgba(205,183,142,0.10);
    --header-bg: #1A2038;               /* flat — gradients retired */
    --header-border: rgba(146,163,214,0.18);
    --header-height: 52px;
    --tab-active-color: #E2D3B2;
    --tab-active-bg: rgba(205,183,142,0.16);
    --tab-inactive-color: #8C99B8;
    --tab-hover-color: #EDECE6;
    --nav-indicator: #CDB78E;

    /* Actions & accents — gold is the primary action color in dark */
    --primary: #CDB78E;
    --primary-contrast: #252D4F;        /* text color ON primary */
    --primary-dim: rgba(205,183,142,0.14);
    --primary-glow: rgba(205,183,142,0.30);
    --primary-muted: rgba(205,183,142,0.65);
    --accent: #E2D3B2;                  /* gold-tinted highlight text/numbers */
    --accent-dim: rgba(205,183,142,0.12);
    --secondary: #677D85;               /* slate — secondary badges, series 2 */
    --secondary-dim: rgba(103,125,133,0.22);

    /* Status (brand-warm, desaturated) */
    --danger: #C97B6E;
    --danger-dim: rgba(201,123,110,0.15);
    --success: #7FA98B;
    --success-dim: rgba(127,169,139,0.15);
    --success-mid: rgba(127,169,139,0.30);
    --warning: #D4A855;
    --warning-dim: rgba(212,168,85,0.15);

    /* Type ramp */
    --text-primary: #F9F9F7;
    --text-secondary: rgba(237,236,230,0.78);
    --text-muted: #8C99B8;
    --text-tertiary: #6B7799;
    --text-10: rgba(249,249,247,0.08);

    /* Depth & shape */
    --shadow-card: 0 2px 8px rgba(0,0,0,0.35);
    --shadow-elevated: 0 8px 30px rgba(0,0,0,0.5);
    --shadow-focus: 0 0 0 2px rgba(205,183,142,0.35);
    --radius: 8px;
    --radius-sm: 6px;
    --radius-lg: 12px;

    --scrollbar-thumb: rgba(146,163,214,0.25);
    --scrollbar-thumb-hover: rgba(146,163,214,0.40);

    /* Overlay scrim — intentionally NOT overridden in light theme (stays navy) */
    --scrim: rgba(11,14,31,0.55);

    /* Charts (read by JS: getComputedStyle) */
    --chart-1: #CDB78E;
    --chart-2: #677D85;
    --chart-3: #536575;
    --chart-4: #7FA98B;
    --chart-5: #C97B6E;
    --chart-grid: rgba(146,163,214,0.12);
}

/* ── LIGHT THEME — brand ivory + navy ink, chrome stays navy ────── */
[data-theme="light"] {
    --void: #F9F9F7;
    --abyss: #F3F2EE;
    --deep: #F0EFEA;
    --surface: #FFFFFF;
    --elevated: #FFFFFF;

    --bg-app: #F9F9F7;
    --bg-shell: #F0EFEA;
    --bg-workspace: #F3F2EE;
    --bg-card: #FFFFFF;
    --bg-elevated: #FFFFFF;
    --bg-input: #FFFFFF;
    --bg-input-focus: #FAF7F0;
    --bg-table-row-hover: rgba(185,156,102,0.08);
    --bg-table-row-alt: rgba(37,45,79,0.025);

    --border: #E8E7E2;
    --border-subtle: rgba(37,45,79,0.07);
    --border-strong: #E1E0DA;
    --border-active: rgba(37,45,79,0.45);

    --chrome-border: rgba(255,255,255,0.22);
    --chrome-text: #9AA5C4;
    --chrome-text-hover: rgba(249,249,247,0.95);
    --chrome-bg-hover: rgba(255,255,255,0.13);
    --header-bg: #252D4F;               /* navy chrome persists in light */
    --header-border: rgba(0,0,0,0.25);
    --tab-active-color: #F9F9F7;
    --tab-active-bg: rgba(255,255,255,0.13);
    --tab-inactive-color: #9AA5C4;
    --tab-hover-color: #E8EAF2;
    --nav-indicator: #CDB78E;

    --primary: #252D4F;                 /* navy buttons, ivory text */
    --primary-contrast: #F9F9F7;
    --primary-dim: rgba(37,45,79,0.08);
    --primary-glow: rgba(37,45,79,0.25);
    --primary-muted: rgba(37,45,79,0.6);
    --accent: #B99C66;                  /* gold deepened for white surfaces */
    --accent-dim: rgba(185,156,102,0.14);
    --secondary: #677D85;
    --secondary-dim: rgba(103,125,133,0.14);

    --danger: #A8544A;
    --danger-dim: rgba(168,84,74,0.10);
    --success: #4E7A5C;
    --success-dim: rgba(78,122,92,0.10);
    --success-mid: rgba(78,122,92,0.22);
    --warning: #8A7346;
    --warning-dim: rgba(138,115,70,0.10);

    --text-primary: #252D4F;
    --text-secondary: #33383F;
    --text-muted: #696E78;
    --text-tertiary: #A6A49D;
    --text-10: rgba(37,45,79,0.08);

    --shadow-card: 0 1px 3px rgba(37,45,79,0.06);
    --shadow-elevated: 0 8px 30px rgba(37,45,79,0.14);
    --shadow-focus: 0 0 0 3px rgba(185,156,102,0.30);

    --scrollbar-thumb: rgba(37,45,79,0.18);
    --scrollbar-thumb-hover: rgba(37,45,79,0.30);

    --chart-1: #B99C66;
    --chart-2: #677D85;
    --chart-3: #536575;
    --chart-4: #4E7A5C;
    --chart-5: #A8544A;
    --chart-grid: rgba(37,45,79,0.10);
}

/* ═══ Base ═══ */
.b1-tabular { font-variant-numeric: tabular-nums; letter-spacing: 0.01em; }

/* ═══ Buttons ═══ */
.b1-btn {
    display: inline-flex; align-items: center; gap: 6px;
    font-family: var(--font-ui); font-size: 13px; font-weight: 600;
    padding: 8px 16px; border-radius: var(--radius-sm);
    border: 1px solid transparent; cursor: pointer;
    transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease, transform 120ms ease;
}
.b1-btn:active { transform: translateY(1px); }
.b1-btn-primary { background: var(--primary); color: var(--primary-contrast); }
.b1-btn-primary:hover { filter: brightness(1.06); box-shadow: var(--shadow-card); }
.b1-btn-secondary { background: transparent; color: var(--text-secondary); border-color: var(--border-strong); }
.b1-btn-secondary:hover { background: var(--bg-table-row-hover); color: var(--text-primary); }
.b1-btn-ghost { background: transparent; color: var(--text-muted); }
.b1-btn-ghost:hover { color: var(--text-primary); background: var(--bg-table-row-hover); }
.b1-btn-danger { background: var(--danger-dim); color: var(--danger); border-color: transparent; }
.b1-btn:focus-visible { outline: none; box-shadow: var(--shadow-focus); }

/* ═══ Badges / status pills ═══ */
.b1-badge {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 11px; font-weight: 600; letter-spacing: 0.04em;
    padding: 2px 9px; border-radius: 999px; border: 1px solid transparent;
}
.b1-badge-gold { color: var(--accent); background: var(--accent-dim); border-color: var(--border-active); }
.b1-badge-slate { color: var(--secondary); background: var(--secondary-dim); }
.b1-badge-success { color: var(--success); background: var(--success-dim); }
.b1-badge-warning { color: var(--warning); background: var(--warning-dim); }
.b1-badge-danger { color: var(--danger); background: var(--danger-dim); }
[data-theme="light"] .b1-badge-gold { color: #8A7346; } /* 11px badge text needs AA on ivory; --accent gold is for large numerals */

/* ═══ Popover / dropdown ═══ */
.b1-popover {
    position: absolute; z-index: 900; min-width: 180px;
    background: var(--bg-elevated); border: 1px solid var(--border);
    border-radius: var(--radius-lg); box-shadow: var(--shadow-elevated);
    padding: 6px; opacity: 0; transform: translateY(-4px) scale(0.98);
    transition: opacity 140ms ease, transform 140ms ease; pointer-events: none;
}
.b1-popover.b1-open { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.b1-popover-item {
    display: flex; align-items: center; gap: 8px; width: 100%;
    font-family: var(--font-ui); font-size: 13px; color: var(--text-secondary);
    padding: 8px 10px; border-radius: var(--radius-sm);
    background: none; border: none; cursor: pointer; text-align: left;
}
.b1-popover-item:hover { background: var(--bg-table-row-hover); color: var(--text-primary); }
.b1-popover-item:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.b1-palette-item:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.b1-popover-sep { height: 1px; background: var(--border-subtle); margin: 5px 4px; }

/* ═══ Slide-over panel ═══ */
.b1-slideover-backdrop {
    position: fixed; inset: 0; z-index: 950; background: var(--scrim);
    opacity: 0; transition: opacity 200ms ease; pointer-events: none;
}
.b1-slideover-backdrop.b1-open { opacity: 1; pointer-events: auto; }
.b1-slideover {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 951;
    width: min(440px, 92vw); background: var(--bg-card);
    border-left: 1px solid var(--border); box-shadow: var(--shadow-elevated);
    transform: translateX(102%); transition: transform 240ms cubic-bezier(.32,.72,.33,1);
    display: flex; flex-direction: column;
}
.b1-slideover.b1-open { transform: translateX(0); }
.b1-slideover-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 20px; border-bottom: 1px solid var(--border-subtle);
    font-family: var(--font-display); font-weight: 600; font-size: 16px; color: var(--text-primary);
}
.b1-slideover-body { padding: 20px; overflow-y: auto; flex: 1; }

/* ═══ Command palette ═══ */
.b1-palette-backdrop {
    position: fixed; inset: 0; z-index: 980; background: var(--scrim);
    display: none; align-items: flex-start; justify-content: center; padding-top: 14vh;
}
.b1-palette-backdrop.b1-open { display: flex; }
.b1-palette {
    width: min(560px, 92vw); background: var(--bg-elevated);
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    box-shadow: var(--shadow-elevated); overflow: hidden;
}
.b1-palette-input {
    width: 100%; font-family: var(--font-ui); font-size: 15px;
    background: transparent; color: var(--text-primary);
    border: none; outline: none; padding: 16px 18px;
    border-bottom: 1px solid var(--border-subtle);
}
.b1-palette-list { max-height: 320px; overflow-y: auto; padding: 6px; }
.b1-palette-item {
    display: flex; align-items: center; gap: 10px; justify-content: space-between;
    font-size: 13px; color: var(--text-secondary);
    padding: 10px 12px; border-radius: var(--radius-sm); cursor: pointer;
}
.b1-palette-item.b1-active { background: var(--primary-dim); color: var(--text-primary); }
.b1-palette-hint { font-size: 11px; color: var(--text-tertiary); }

/* ═══ Toasts ═══ */
.b1-toast-stack { position: fixed; bottom: 20px; right: 20px; z-index: 990; display: flex; flex-direction: column; gap: 8px; max-width: calc(100vw - 40px); }
.b1-toast {
    display: flex; align-items: center; gap: 10px;
    background: var(--bg-elevated); border: 1px solid var(--border);
    border-left: 3px solid var(--primary); border-radius: var(--radius);
    box-shadow: var(--shadow-elevated); color: var(--text-primary);
    font-family: var(--font-ui); font-size: 13px; padding: 12px 16px;
    animation: b1-toast-in 220ms cubic-bezier(.32,.72,.33,1);
}
.b1-toast-success { border-left-color: var(--success); }
.b1-toast-error { border-left-color: var(--danger); }
@keyframes b1-toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ═══ Skeletons & empty states ═══ */
.b1-skeleton {
    background: linear-gradient(90deg, var(--bg-input) 25%, var(--bg-elevated) 50%, var(--bg-input) 75%);
    background-size: 200% 100%; animation: b1-shimmer 1.4s infinite; border-radius: var(--radius-sm);
}
@keyframes b1-shimmer { to { background-position: -200% 0; } }
.b1-empty { text-align: center; padding: 40px 20px; color: var(--text-muted); font-size: 13px; }
.b1-empty::before { content: "◆"; display: block; font-size: 22px; color: var(--brand-gold); opacity: 0.5; margin-bottom: 10px; }

/* ═══ Motion safety ═══ */
@media (prefers-reduced-motion: reduce) {
    .b1-popover, .b1-slideover, .b1-slideover-backdrop, .b1-toast, .b1-skeleton { transition: none !important; animation: none !important; }
}