/*  Theme tokens  — dark is default, `data-theme="light"` on <html> swaps.    */
:root,
:root[data-theme="dark"] {
    --bg-0: #05060d;
    --bg-1: #0b0f1e;
    --bg-2: #121833;
    --panel: rgba(20, 28, 55, 0.55);
    --panel-solid: rgba(14, 20, 43, 0.9);
    --panel-border: rgba(120, 180, 255, 0.12);
    --panel-border-strong: rgba(120, 180, 255, 0.28);
    --text: #e6ecff;
    --text-dim: #8b98c4;
    --text-muted: rgba(139, 152, 196, 0.55);
    --accent: #4cdcff;
    --accent-2: #8a7bff;
    --accent-3: #ff7bd3;
    --accent-rgb: 76, 220, 255;
    --accent-2-rgb: 138, 123, 255;
    --ok: #5dfca9;
    --err: #ff6b8a;
    --input-bg: rgba(10, 15, 35, 0.6);
    --input-bg-strong: rgba(10, 15, 35, 0.9);
    --edge: rgba(140, 195, 255, 0.55);
    --edge-soft: rgba(140, 195, 255, 0.18);
    --node-fill: rgba(30, 44, 85, 0.9);
    --node-stroke: rgba(120, 190, 255, 0.6);
    --row-hover: rgba(76, 220, 255, 0.1);
    --row-highlight: rgba(76, 220, 255, 0.13);
    --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.55);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);
    --font-ar: "Almarai", "Noto Naskh Arabic", "Segoe UI", sans-serif;
    --font-sans: "Inter", "Segoe UI", system-ui, sans-serif;
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    color-scheme: dark;
}

:root[data-theme="light"] {
    --bg-0: #eef1f7;
    --bg-1: #f5f7fc;
    --bg-2: #ffffff;
    --panel: rgba(255, 255, 255, 0.75);
    --panel-solid: rgba(255, 255, 255, 0.95);
    --panel-border: rgba(54, 87, 168, 0.14);
    --panel-border-strong: rgba(54, 87, 168, 0.28);
    --text: #101937;
    --text-dim: #5a6b95;
    --text-muted: rgba(90, 107, 149, 0.5);
    --accent: #1b7dd8;
    --accent-2: #7556e6;
    --accent-3: #d8478f;
    --accent-rgb: 27, 125, 216;
    --accent-2-rgb: 117, 86, 230;
    --ok: #1ba16b;
    --err: #cf1d4b;
    --input-bg: rgba(255, 255, 255, 0.9);
    --input-bg-strong: rgba(255, 255, 255, 0.98);
    --edge: rgba(54, 87, 168, 0.55);
    --edge-soft: rgba(54, 87, 168, 0.22);
    --node-fill: #ffffff;
    --node-stroke: rgba(54, 87, 168, 0.4);
    --row-hover: rgba(27, 125, 216, 0.09);
    --row-highlight: rgba(27, 125, 216, 0.14);
    --shadow-lg: 0 22px 55px rgba(28, 48, 90, 0.14);
    --shadow-md: 0 8px 24px rgba(28, 48, 90, 0.1);
    color-scheme: light;
}

/* Global smooth theme transition */
html, body, .panel, .topbar, .input-panel textarea,
.field input, .field select, .btn, .icon-btn,
.metric-card, .metric-hero, .col-filter-row,
.tree-node rect, .tree-edge, .user-chip,
.column-filter, .table-scroll, table.tokens thead th {
    transition:
        background-color 0.35s var(--ease),
        border-color 0.35s var(--ease),
        color 0.35s var(--ease),
        fill 0.35s var(--ease),
        stroke 0.35s var(--ease),
        box-shadow 0.35s var(--ease);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: var(--bg-0);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 14px;
    overflow-x: hidden;
}

body.page-login {
    min-height: 100vh;
    display: grid;
    place-items: center;
    overflow: hidden;
    position: relative;
}

body.page-analyze {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ───────── Animated background ───────── */
.bg-stars {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(1200px 700px at 15% 10%, rgba(var(--accent-rgb), 0.16), transparent 60%),
        radial-gradient(1000px 700px at 85% 90%, rgba(var(--accent-2-rgb), 0.18), transparent 60%),
        radial-gradient(900px 600px at 60% 40%, rgba(255, 123, 211, 0.08), transparent 55%),
        linear-gradient(180deg, var(--bg-1), var(--bg-0));
}

.bg-stars::before {
    content: "";
    position: absolute; inset: 0;
    background-image:
        radial-gradient(1px 1px at 12% 33%, rgba(var(--accent-rgb), 0.55), transparent 60%),
        radial-gradient(1px 1px at 40% 67%, rgba(var(--accent-2-rgb), 0.55), transparent 60%),
        radial-gradient(1px 1px at 70% 15%, rgba(var(--accent-rgb), 0.45), transparent 60%),
        radial-gradient(1.2px 1.2px at 85% 50%, rgba(var(--accent-2-rgb), 0.5), transparent 60%),
        radial-gradient(1px 1px at 22% 85%, rgba(var(--accent-rgb), 0.45), transparent 60%),
        radial-gradient(1.3px 1.3px at 55% 90%, rgba(var(--accent-2-rgb), 0.55), transparent 60%),
        radial-gradient(1.2px 1.2px at 90% 80%, rgba(var(--accent-rgb), 0.45), transparent 60%);
    animation: drift 48s linear infinite;
    opacity: 0.75;
}

:root[data-theme="light"] .bg-stars::before { opacity: 0.35; }

@keyframes drift {
    0%   { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(-30px, -20px, 0); }
}

/* ───────── Login card ───────── */
.login-card {
    position: relative;
    z-index: 2;
    width: min(420px, 90vw);
    padding: 38px 34px 30px;
    background: var(--panel);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(22px) saturate(150%);
    -webkit-backdrop-filter: blur(22px) saturate(150%);
    border-radius: var(--radius-lg);
    box-shadow:
        var(--shadow-lg),
        0 0 0 1px rgba(var(--accent-rgb), 0.05) inset,
        0 0 60px rgba(var(--accent-rgb), 0.08);
    animation: cardIn 0.8s var(--ease);
    overflow: hidden;
}
.login-card::before {
    /* Subtle rotating conic halo around the card edges */
    content: "";
    position: absolute;
    inset: -1px;
    z-index: -1;
    background: conic-gradient(
        from 0deg,
        rgba(var(--accent-rgb), 0) 0deg,
        rgba(var(--accent-rgb), 0.45) 90deg,
        rgba(var(--accent-2-rgb), 0.45) 180deg,
        rgba(var(--accent-rgb), 0) 360deg
    );
    border-radius: var(--radius-lg);
    opacity: 0.35;
    animation: halo 18s linear infinite;
    pointer-events: none;
}
@keyframes halo { to { transform: rotate(360deg); } }

@keyframes cardIn {
    from { opacity: 0; transform: translateY(14px) scale(0.98); }
    to   { opacity: 1; transform: none; }
}

.logo {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 26px;
}
.logo-glyph {
    width: 36px; height: 36px;
    border-radius: 10px;
    background: conic-gradient(from 140deg, var(--accent), var(--accent-2), var(--accent-3), var(--accent));
    box-shadow: 0 0 30px rgba(76, 220, 255, 0.6);
    position: relative;
}
.logo-glyph::after {
    content: "";
    position: absolute; inset: 3px;
    border-radius: 8px;
    background: var(--bg-0);
}
:root[data-theme="light"] .logo-glyph::after { background: #1a2440; }
.logo-glyph::before {
    content: "ل";
    position: absolute; inset: 0;
    display: grid; place-items: center;
    font-family: var(--font-ar);
    font-size: 22px; font-weight: bold;
    color: var(--accent);
    z-index: 1;
}
.logo-title {
    font-size: 20px; font-weight: 600;
    letter-spacing: 0.3px;
    background: linear-gradient(90deg, var(--accent), var(--text));
    -webkit-background-clip: text; background-clip: text;
    color: transparent;
}
.logo-sub {
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 2px;
}

.field {
    margin: 14px 0;
    position: relative;
}
.field label {
    display: block;
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1.4px;
    margin-bottom: 6px;
}
.field input, .field select {
    width: 100%;
    padding: 12px 14px;
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
    color: var(--text);
    border-radius: 10px;
    font-size: 14px;
    font-family: var(--font-sans);
    outline: none;
    transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), transform 0.2s var(--ease);
}
.field input:hover, .field select:hover {
    border-color: var(--panel-border-strong);
}
.field input:focus, .field select:focus {
    border-color: rgba(var(--accent-rgb), 0.7);
    box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.14);
}

.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 18px;
    background: linear-gradient(120deg, var(--accent), var(--accent-2));
    color: #06121f;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-family: var(--font-sans);
    font-size: 14px;
    cursor: pointer;
    overflow: hidden;
    box-shadow: 0 10px 28px rgba(var(--accent-rgb), 0.28);
    transition: transform 0.2s var(--ease), box-shadow 0.25s var(--ease), filter 0.2s var(--ease);
}
:root[data-theme="light"] .btn { color: #ffffff; }
.btn::before {
    /* Light sweep on hover */
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.25) 50%, transparent 70%);
    transform: translateX(-120%);
    transition: transform 0.55s var(--ease);
    pointer-events: none;
}
.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    filter: brightness(1.06);
    box-shadow: 0 14px 34px rgba(var(--accent-rgb), 0.36);
}
.btn:hover:not(:disabled)::before { transform: translateX(120%); }
.btn:active:not(:disabled) { transform: translateY(0); transition-duration: 0.08s; }
.btn:focus-visible { outline: 2px solid rgba(var(--accent-rgb), 0.6); outline-offset: 3px; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn.wide { width: 100%; margin-top: 14px; }
.btn.ghost {
    background: transparent;
    color: var(--text-dim);
    border: 1px solid var(--panel-border);
    box-shadow: none;
}
.btn.ghost::before { display: none; }
.btn.ghost:hover:not(:disabled) {
    color: var(--text);
    border-color: rgba(var(--accent-rgb), 0.5);
    background: rgba(var(--accent-rgb), 0.06);
    transform: translateY(-1px);
    box-shadow: none;
}

.error-box {
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: color-mix(in srgb, var(--err) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--err) 45%, transparent);
    color: var(--err);
    font-size: 13px;
    display: none;
}
.error-box.visible { display: block; animation: shake 0.35s var(--ease); }
@keyframes shake {
    0%,100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

/* ───────── Analyze page ───────── */
.topbar {
    position: sticky; top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: color-mix(in srgb, var(--bg-0) 78%, transparent);
    backdrop-filter: blur(14px) saturate(130%);
    -webkit-backdrop-filter: blur(14px) saturate(130%);
    border-bottom: 1px solid var(--panel-border);
}
.topbar .logo { margin-bottom: 0; }
.topbar .spacer { flex: 1; }
.topbar .user-chip {
    padding: 6px 12px;
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
    border-radius: 100px;
    font-size: 12px;
    color: var(--text-dim);
}

.analyze-layout {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 16px 18px 22px;
    min-width: 0;
}
.analyze-layout > * { min-width: 0; }

.input-panel {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    padding: 14px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    align-items: start;
    backdrop-filter: blur(14px) saturate(130%);
    -webkit-backdrop-filter: blur(14px) saturate(130%);
    box-shadow: var(--shadow-md);
}
.input-panel textarea {
    width: 100%;
    min-height: 72px;
    max-height: 200px;
    padding: 12px 14px;
    background: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    font-family: var(--font-ar);
    font-size: 18px;
    line-height: 1.8;
    direction: rtl;
    resize: vertical;
    outline: none;
    transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.input-panel textarea::placeholder { color: var(--text-muted); }
.input-panel textarea:hover { border-color: var(--panel-border-strong); }
.input-panel textarea:focus {
    border-color: rgba(var(--accent-rgb), 0.7);
    box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.14);
}
.input-panel .actions { display: flex; flex-direction: column; gap: 8px; }

.output-grid {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    gap: 14px;
    min-height: 0;
    height: 600px;
}
.panel {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(14px) saturate(130%);
    -webkit-backdrop-filter: blur(14px) saturate(130%);
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    box-shadow: var(--shadow-md);
    opacity: 0;
    transform: translateY(8px);
    animation: panelIn 0.55s var(--ease) forwards;
}
.panel:nth-of-type(2) { animation-delay: 0.08s; }
.panel:nth-of-type(3) { animation-delay: 0.14s; }
@keyframes panelIn {
    to { opacity: 1; transform: none; }
}
.panel h3 {
    margin: 0;
    padding: 12px 16px;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-dim);
    border-bottom: 1px solid var(--panel-border);
    display: flex;
    align-items: center;
    gap: 10px;
}
.panel h3 .dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent);
    position: relative;
}
.panel h3 .dot::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: inherit;
    animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
    0%   { opacity: 0.6; transform: scale(1); }
    70%  { opacity: 0; transform: scale(2.4); }
    100% { opacity: 0; transform: scale(2.4); }
}
.panel h3 .panel-toolbar {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 6px;
}
.panel-body { flex: 1; overflow: hidden; min-height: 0; position: relative; }

.icon-btn {
    padding: 4px 10px;
    min-width: 28px;
    height: 28px;
    background: var(--input-bg);
    color: var(--text-dim);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: color 0.2s var(--ease), border-color 0.2s var(--ease),
                background-color 0.2s var(--ease), transform 0.15s var(--ease);
}
.icon-btn:hover {
    color: var(--text);
    border-color: rgba(var(--accent-rgb), 0.5);
    background: rgba(var(--accent-rgb), 0.08);
    transform: translateY(-1px);
}
.icon-btn:active { transform: translateY(0); transition-duration: 0.06s; }
.icon-btn:focus-visible {
    outline: 2px solid rgba(var(--accent-rgb), 0.55);
    outline-offset: 2px;
}
.icon-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.panel-toolbar .divider {
    width: 1px; height: 18px;
    background: var(--panel-border-strong);
    margin: 0 4px;
}

.btn.small { padding: 6px 10px; font-size: 11px; }

/* ───── Column filter dropdown ───── */
.column-filter {
    position: absolute;
    top: 0; right: 10px;
    z-index: 5;
    min-width: 230px;
    max-height: 60vh;
    overflow: auto;
    padding: 10px;
    background: var(--panel-solid);
    border: 1px solid var(--panel-border-strong);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    animation: dropIn 0.22s var(--ease);
}
@keyframes dropIn {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: none; }
}
.col-filter-actions {
    display: flex;
    gap: 6px;
    padding-bottom: 8px;
    margin-bottom: 6px;
    border-bottom: 1px solid var(--panel-border);
}
.col-filter-list {
    display: grid;
    gap: 4px;
}
.col-filter-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 6px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12.5px;
    color: var(--text);
    transition: background 0.1s;
}
.col-filter-row:hover { background: rgba(76, 220, 255, 0.07); }
.col-filter-row input[type="checkbox"] {
    accent-color: var(--accent);
    cursor: pointer;
}
.col-filter-row input[type="checkbox"]:disabled { opacity: 0.45; cursor: not-allowed; }
.col-filter-row input[type="checkbox"]:disabled + span { color: var(--text-dim); }

/* ───────── Tree ───────── */
#tree-container { height: 100%; overflow: hidden; }
#tree-svg {
    width: 100%;
    height: 100%;
    min-height: 400px;
    display: block;
    cursor: grab;
}
#tree-svg:active { cursor: grabbing; }

.tree-node rect {
    fill: var(--node-fill);
    stroke: var(--node-stroke);
    stroke-width: 1.2;
    transition: fill 0.25s var(--ease), stroke 0.25s var(--ease), filter 0.25s var(--ease);
    filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.4));
}
.tree-node.root rect {
    fill: color-mix(in srgb, var(--accent-2) 22%, transparent);
    stroke: var(--accent-2);
}
.tree-node.highlight rect {
    fill: color-mix(in srgb, var(--accent) 24%, transparent);
    stroke: var(--accent);
    filter: drop-shadow(0 0 14px color-mix(in srgb, var(--accent) 80%, transparent));
}
.tree-node:not(.root):hover rect {
    stroke: rgba(var(--accent-rgb), 0.9);
    filter: drop-shadow(0 8px 20px color-mix(in srgb, var(--accent) 35%, transparent));
}
.tree-node text {
    fill: var(--text);
    pointer-events: none;
    transition: fill 0.25s var(--ease);
}
.tree-node .word-ar {
    font-family: var(--font-ar);
    font-size: 20px;
    font-weight: 700;
}
.tree-node .sub {
    font-family: var(--font-ar);
    font-size: 12px;
    fill: var(--text-dim);
}
.tree-node .tag {
    font-family: var(--font-sans);
    font-size: 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
    fill: var(--accent);
}
.tree-node { cursor: pointer; }

.tree-edge {
    fill: none;
    stroke: var(--edge);
    stroke-width: 1.3;
    stroke-linecap: round;
    opacity: 0.8;
    transition: stroke 0.25s var(--ease), opacity 0.25s var(--ease), stroke-width 0.25s var(--ease);
}
.tree-edge.highlight {
    stroke: var(--accent);
    opacity: 1;
    stroke-width: 2.2;
    filter: drop-shadow(0 0 6px var(--accent));
}
.tree-edge.edge-outside {
    stroke-dasharray: 4 3;
    stroke: var(--accent-3);
}

/* ───────── Table ───────── */
.table-scroll {
    overflow: auto;
    height: 100%;
    max-height: 100%;
    scrollbar-width: thin;
    scrollbar-color: rgba(120, 180, 255, 0.25) transparent;
}
.table-scroll::-webkit-scrollbar { width: 8px; height: 8px; }
.table-scroll::-webkit-scrollbar-track { background: transparent; }
.table-scroll::-webkit-scrollbar-thumb {
    background: rgba(120, 180, 255, 0.2);
    border-radius: 100px;
    border: 2px solid transparent;
    background-clip: padding-box;
}
.table-scroll::-webkit-scrollbar-thumb:hover {
    background: rgba(76, 220, 255, 0.45);
    background-clip: padding-box;
}
table.tokens {
    width: 100%;
    border-collapse: collapse;
    font-size: 12.5px;
}
table.tokens thead th {
    position: sticky;
    top: 0;
    background: var(--panel-solid);
    color: var(--text-dim);
    font-weight: 500;
    font-size: 10.5px;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    padding: 11px 10px;
    border-bottom: 1px solid var(--panel-border);
    white-space: nowrap;
    text-align: start;
    z-index: 1;
    backdrop-filter: blur(10px);
}
table.tokens td {
    padding: 9px 10px;
    border-bottom: 1px solid var(--panel-border);
    white-space: nowrap;
    vertical-align: top;
}
table.tokens td.ar {
    font-family: var(--font-ar);
    font-size: 16px;
    direction: rtl;
}
table.tokens tbody tr {
    transition: background-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
    cursor: pointer;
}
table.tokens tbody tr:hover { background: var(--row-hover); }
table.tokens tbody tr.highlight {
    background: var(--row-highlight);
    box-shadow: inset 3px 0 0 var(--accent);
}
table.tokens td.empty { color: var(--text-muted); }

/* ───────── Empty / loading states ───────── */
.state {
    padding: 40px 20px;
    text-align: center;
    color: var(--text-dim);
    font-size: 13px;
}
.spinner {
    width: 16px; height: 16px;
    border: 2px solid color-mix(in srgb, var(--accent) 25%, transparent);
    border-top-color: var(--accent);
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
    vertical-align: -3px;
    animation: spin 0.75s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Subtle pulsing glow on the empty-state copy while work is in flight. */
.state.loading {
    background: linear-gradient(90deg,
        transparent,
        color-mix(in srgb, var(--accent) 8%, transparent),
        transparent);
    background-size: 200% 100%;
    animation: shimmer 2.2s linear infinite;
}
@keyframes shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ───────── Theme toggle button ───────── */
.theme-toggle-fixed {
    position: fixed;
    top: 18px; right: 18px;
    z-index: 20;
}
.theme-toggle {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--panel-border);
    background: var(--input-bg);
    color: var(--text-dim);
    cursor: pointer;
    display: inline-grid;
    place-items: center;
    overflow: hidden;
    transition: color 0.25s var(--ease), border-color 0.25s var(--ease),
                background-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.theme-toggle:hover {
    color: var(--text);
    border-color: rgba(var(--accent-rgb), 0.5);
    background: rgba(var(--accent-rgb), 0.08);
    transform: rotate(12deg);
}
.theme-toggle:focus-visible {
    outline: 2px solid rgba(var(--accent-rgb), 0.55);
    outline-offset: 2px;
}
.theme-toggle svg {
    width: 18px;
    height: 18px;
    transition: transform 0.45s var(--ease), opacity 0.3s var(--ease);
}
.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
}
:root[data-theme="dark"] .theme-toggle .icon-sun  { opacity: 1; transform: scale(1) rotate(0); }
:root[data-theme="dark"] .theme-toggle .icon-moon { opacity: 0; transform: scale(0.4) rotate(-80deg); }
:root[data-theme="light"] .theme-toggle .icon-sun  { opacity: 0; transform: scale(0.4) rotate(80deg); }
:root[data-theme="light"] .theme-toggle .icon-moon { opacity: 1; transform: scale(1) rotate(0); }

/* ───────── Metrics panel ───────── */
.metrics-panel { min-height: 0; }
.metrics-panel .panel-body {
    overflow: visible;
    padding: 16px;
    min-width: 0;
}
.metrics-body {
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-width: 0;
}
.metric-group { min-width: 0; }

.dot.dot-accent-2 { background: var(--accent-2); box-shadow: 0 0 10px var(--accent-2); }

/* Hero composite score */
.metric-hero {
    padding: 18px 22px 16px;
    background: linear-gradient(135deg, rgba(138, 123, 255, 0.18), rgba(76, 220, 255, 0.08));
    border: 1px solid rgba(138, 123, 255, 0.35);
    border-radius: 14px;
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: minmax(220px, 300px) 1fr;
    column-gap: 28px;
    row-gap: 4px;
    align-items: center;
}
.metric-hero-label, .metric-hero-value { grid-column: 1; }
.metric-hero-bar { grid-column: 1 / -1; }
.metric-hero-caption {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: center;
    margin-top: 0 !important;
}
.metric-hero::before {
    content: "";
    position: absolute;
    inset: -40% -40% auto auto;
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(138, 123, 255, 0.45), transparent 65%);
    pointer-events: none;
    filter: blur(6px);
}
.metric-hero-label {
    font-size: 10.5px;
    color: var(--text-dim);
    letter-spacing: 2px;
    text-transform: uppercase;
}
.metric-hero-value {
    margin-top: 4px;
    display: flex;
    align-items: baseline;
    gap: 8px;
}
.metric-hero-value .num {
    font-size: 52px;
    font-weight: 600;
    background: linear-gradient(90deg, var(--accent), #fff);
    -webkit-background-clip: text; background-clip: text;
    color: transparent;
    letter-spacing: -1px;
}
.metric-hero-value .slash {
    font-size: 13px;
    color: var(--text-dim);
}
.metric-hero-bar {
    margin-top: 10px;
    height: 6px;
    background: rgba(10, 15, 35, 0.6);
    border-radius: 100px;
    overflow: hidden;
}
.metric-hero-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    border-radius: 100px;
    box-shadow: 0 0 12px rgba(76, 220, 255, 0.5);
    transition: width 0.6s cubic-bezier(0.2, 0.9, 0.3, 1);
}
.metric-hero-caption {
    margin-top: 10px;
    font-size: 12px;
    color: var(--text-dim);
    line-height: 1.5;
}
.metric-hero.rating-low    { border-color: rgba(255, 123, 211, 0.45); }
.metric-hero.rating-low .metric-hero-fill   { background: linear-gradient(90deg, var(--accent-3), var(--accent-2)); }
.metric-hero.rating-high   { border-color: rgba(93, 252, 169, 0.45); }
.metric-hero.rating-high .metric-hero-fill  { background: linear-gradient(90deg, var(--ok), var(--accent)); }

/* Metric group / grid */
.metric-group + .metric-group { margin-top: 16px; }
.metric-group-title {
    font-size: 10.5px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 8px;
}
.metric-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.metric-card {
    flex: 1 1 140px;
    min-width: 140px;
    padding: 12px 14px;
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
    transition: transform 0.2s var(--ease), border-color 0.25s var(--ease),
                background-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.metric-card:hover {
    transform: translateY(-2px);
    border-color: rgba(var(--accent-rgb), 0.4);
    box-shadow: 0 8px 22px color-mix(in srgb, var(--accent) 14%, transparent);
}
.metric-card::after {
    content: "";
    position: absolute;
    top: 0; bottom: 0; left: 0;
    width: 3px;
    background: var(--rating-color, var(--accent));
    opacity: 0.75;
}
.metric-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}
.metric-label {
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 0.5px;
}
.metric-rating {
    font-size: 9.5px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: 100px;
    background: color-mix(in srgb, var(--rating-color, var(--accent)) 13%, transparent);
    color: var(--rating-color, var(--accent));
    border: 1px solid color-mix(in srgb, var(--rating-color, var(--accent)) 35%, transparent);
}
.metric-value {
    display: flex;
    align-items: baseline;
    gap: 5px;
    margin-top: 2px;
}
.metric-value .num {
    font-size: 22px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.3px;
}
.metric-value .unit {
    font-size: 11px;
    color: var(--text-dim);
}
.metric-hint {
    margin-top: 6px;
    font-size: 11px;
    line-height: 1.45;
    color: var(--text-dim);
    opacity: 0.9;
}

/* Rating colors — each card sets a CSS var its ::after + rating pill read */
.metric-card.rating-high,
.metric-card.rating-cohesive,
.metric-card.rating-simple,
.metric-card.rating-clean       { --rating-color: var(--ok); }
.metric-card.rating-balanced,
.metric-card.rating-moderate    { --rating-color: var(--accent); }
.metric-card.rating-low,
.metric-card.rating-fragmented,
.metric-card.rating-complex     { --rating-color: var(--accent-3); }
.metric-card.rating-short,
.metric-card.rating-long        { --rating-color: var(--accent-2); }

/* Rating-pill background/border are driven by --rating-color via color-mix,
   so no per-rating overrides are needed here. */

/* ───────── Responsive ───────── */
@media (max-width: 980px) {
    .output-grid { grid-template-columns: 1fr; }
    .panel { min-height: 320px; }
    .input-panel { grid-template-columns: 1fr; }
    .metrics-body { grid-template-columns: 1fr; }
}