/*
 * Unixpower Control Hub — Design System CSS
 * =============================================================================
 * DO NOT embed in base.html. Import in <head>:
 *   <link href="{{ url_for('static', filename='css/dashboard.css') }}" rel="stylesheet">
 * =============================================================================
 */

/* ── Font Loading ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;700&display=swap');

/* ═══════════════════════════════════════════════════════════════
   THEME ENGINE — CSS Custom Properties
   Set via `theme` variable: "power-grid" | "midnight-ops" | "coral-reef"
   ═══════════════════════════════════════════════════════════════ */
:root {
    /* ── Base palette (Power Grid — industrial orange on charcoal) ── */
    --bg-main: #0a0a0c;
    --bg-sidebar: #060608;
    --surface: #111114;
    --surface-hover: #1a1a1e;
    --surface-raised: #18181d;
    --border-subtle: rgba(255,255,255,0.06);
    --border-card: rgba(232,100,44,0.10);
    --border-input: rgba(255,255,255,0.10);

    --accent: #e8642c;
    --accent-hover: #f37d4b;
    --accent-glow: rgba(232,100,44,0.12);
    --accent-bg: rgba(232,100,44,0.06);
    --accent-text: #f5a47a;

    --text-primary: #f5f5f7;
    --text-secondary: #c5c5cb;
    --text-muted: #a1a1aa;

    --success: #10b981;
    --success-bg: rgba(16,185,129,0.08);
    --warning: #f59e0b;
    --warning-bg: rgba(245,158,11,0.08);
    --danger: #ef4444;
    --danger-bg: rgba(239,68,68,0.08);
    --info: #3b82f6;
    --info-bg: rgba(59,130,246,0.08);
    --info-glow: rgba(59,130,246,0.15);
    --paused: #8b5cf6;
    --paused-bg: rgba(139,92,246,0.12);

    /* DELIBERATE TYPEFACE — Inter + JetBrains Mono (not system default) */
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
    --fs-display: 2rem;
    --fs-heading: 1.25rem;
    --fs-card-title: 0.8125rem;
    --fs-body: 0.8125rem;
    --fs-body-sm: 0.75rem;
    --fs-label: 0.625rem;
    --fs-mono: 0.75rem;
    --fs-mono-sm: 0.625rem;
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 48px;
    --space-content: 32px; /* named exception — live main padding 2rem */

    --border-strong: #2d2d38;
    --surface-elevated: #16161b;
    --sidebar-width: 250px;
    --sidebar-collapsed: 60px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-card: 0 1px 3px rgba(0,0,0,0.4), 0 0 0 1px var(--border-subtle);
    --shadow-kpi: 0 2px 8px rgba(0,0,0,0.3), 0 0 1px var(--border-card);
    --transition: 0.2s ease;
}

.text-display { font-family: var(--font-mono); font-size: var(--fs-display); font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; }
.text-heading { font-size: var(--fs-heading); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
.text-card-title { font-size: var(--fs-card-title); font-weight: 700; line-height: 1.3; letter-spacing: 0.03em; text-transform: uppercase; }
.text-body { font-size: var(--fs-body); font-weight: 400; line-height: 1.5; }
.text-body-sm { font-size: var(--fs-body-sm); font-weight: 400; line-height: 1.5; }
.text-label { font-size: var(--fs-label); font-weight: 700; line-height: 1.4; letter-spacing: 0.05em; text-transform: uppercase; }
.text-mono { font-family: var(--font-mono); font-size: var(--fs-mono); font-weight: 500; line-height: 1.5; letter-spacing: -0.02em; }
.text-mono-sm { font-family: var(--font-mono); font-size: var(--fs-mono-sm); font-weight: 700; line-height: 1.4; letter-spacing: 0.03em; text-transform: uppercase; }

/* ── Midnight Ops Theme ── */
[data-theme="midnight-ops"] {
    --bg-main: #000000;
    --bg-sidebar: #000000;
    --surface: #0a0a0a;
    --surface-hover: #141414;
    --surface-raised: #111111;
    --border-subtle: #1a1a1a;
    --border-card: rgba(0,240,255,0.12);
    --border-input: rgba(0,240,255,0.10);

    --accent: #00f0ff;
    --accent-hover: #33f5ff;
    --accent-glow: rgba(0,240,255,0.15);
    --accent-bg: rgba(0,240,255,0.06);
    --accent-text: #66f8ff;

    --success: #00ff66;
    --warning: #ffaa00;
    --danger: #ff0055;
    --info: #00b4d8;
    --shadow-card: 0 1px 3px rgba(0,0,0,0.6), 0 0 0 1px var(--border-subtle);
    --shadow-kpi: 0 2px 8px rgba(0,0,0,0.5), 0 0 1px var(--border-card);
}

/* ── Coral Reef Theme ── */
[data-theme="coral-reef"] {
    --bg-main: #0a0f1d;
    --bg-sidebar: #060a14;
    --surface: #141e33;
    --surface-hover: #1c2a44;
    --surface-raised: #111a2e;
    --border-subtle: rgba(20,184,166,0.08);
    --border-card: rgba(244,63,94,0.10);
    --border-input: rgba(255,255,255,0.08);

    --accent: #f43f5e;
    --accent-hover: #fb7185;
    --accent-glow: rgba(244,63,94,0.15);
    --accent-bg: rgba(244,63,94,0.06);
    --accent-text: #fda4af;

    --success: #2dd4bf;
    --success-bg: rgba(45,212,191,0.08);
    --warning: #fbbf24;
    --warning-bg: rgba(251,191,36,0.08);
    --danger: #f87171;
    --danger-bg: rgba(248,113,113,0.08);
    --info: #38bdf8;
    --info-bg: rgba(56,189,248,0.08);
    --shadow-card: 0 1px 3px rgba(0,0,0,0.4), 0 0 0 1px var(--border-subtle);
    --shadow-kpi: 0 2px 8px rgba(0,0,0,0.4), 0 0 1px var(--border-card);
}

/* ── LIGHT MODE (default 2026-08-11) ──
   Dark palettes above are the base; light is an additive override applied
   when <html data-mode="light">. Set by the FOUC script in base.html —
   default light unless the user picked dark. */
:root[data-mode="light"] {
    --bg-main: #f4f4f5;
    --bg-sidebar: #ececef;
    --surface: #ffffff;
    --surface-hover: #f0f0f3;
    --surface-raised: #fafafa;
    --surface-elevated: #f7f7f9;
    --border-subtle: rgba(24,24,27,0.10);
    --border-card: rgba(232,100,44,0.18);
    --border-input: rgba(24,24,27,0.14);
    --border-strong: #d4d4d8;

    --accent: #e8642c;
    --accent-hover: #d4561f;
    --accent-glow: rgba(232,100,44,0.14);
    --accent-bg: rgba(232,100,44,0.08);
    --accent-text: #b3471f;

    --text-primary: #18181b;
    --text-secondary: #3f3f46;
    --text-muted: #64646b;

    --success: #059669;
    --success-bg: rgba(5,150,105,0.10);
    --warning: #d97706;
    --warning-bg: rgba(217,119,6,0.10);
    --danger: #dc2626;
    --danger-bg: rgba(220,38,38,0.10);
    --info: #2563eb;
    --info-bg: rgba(37,99,235,0.10);
    --info-glow: rgba(37,99,235,0.16);
    --paused: #7c3aed;
    --paused-bg: rgba(124,58,237,0.12);

    --shadow-card: 0 1px 3px rgba(0,0,0,0.12), 0 0 0 1px var(--border-subtle);
    --shadow-kpi: 0 2px 8px rgba(0,0,0,0.08), 0 0 1px var(--border-card);
}

/* ── Midnight Ops — light variant ── */
[data-theme="midnight-ops"][data-mode="light"] {
    --bg-main: #f2f6f9;
    --bg-sidebar: #e8eef3;
    --surface: #ffffff;
    --surface-hover: #e9eef3;
    --surface-raised: #f7fafc;
    --surface-elevated: #f4f8fa;
    --border-subtle: rgba(8,145,178,0.14);
    --border-card: rgba(8,145,178,0.20);
    --border-input: rgba(8,145,178,0.18);

    --accent: #0891b2;
    --accent-hover: #0e7490;
    --accent-glow: rgba(8,145,178,0.15);
    --accent-bg: rgba(8,145,178,0.08);
    --accent-text: #155e75;

    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;
    --info: #0284c7;
    --shadow-card: 0 1px 3px rgba(0,0,0,0.12), 0 0 0 1px var(--border-subtle);
    --shadow-kpi: 0 2px 8px rgba(0,0,0,0.08), 0 0 1px var(--border-card);
}

/* ── Coral Reef — light variant ── */
[data-theme="coral-reef"][data-mode="light"] {
    --bg-main: #fdf6f4;
    --bg-sidebar: #f9ecea;
    --surface: #ffffff;
    --surface-hover: #fbeceb;
    --surface-raised: #fffafa;
    --surface-elevated: #fdf7f6;
    --border-subtle: rgba(225,29,72,0.12);
    --border-card: rgba(225,29,72,0.16);
    --border-input: rgba(24,24,27,0.14);

    --accent: #e11d48;
    --accent-hover: #be123c;
    --accent-glow: rgba(225,29,72,0.14);
    --accent-bg: rgba(225,29,72,0.08);
    --accent-text: #9f1239;

    --success: #0d9488;
    --success-bg: rgba(13,148,136,0.10);
    --warning: #d97706;
    --warning-bg: rgba(217,119,6,0.10);
    --danger: #dc2626;
    --danger-bg: rgba(220,38,38,0.10);
    --info: #2563eb;
    --info-bg: rgba(37,99,235,0.10);
    --shadow-card: 0 1px 3px rgba(0,0,0,0.12), 0 0 0 1px var(--border-subtle);
    --shadow-kpi: 0 2px 8px rgba(0,0,0,0.08), 0 0 1px var(--border-card);
}

:root[data-mode="light"] ::-webkit-scrollbar-thumb:hover { background: rgba(24,24,27,0.18); }

/* ═══════════════════════════════════════════════════════════════
   RESET & BASE
   ═══════════════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font-sans);
    background: var(--bg-main);
    color: var(--text-secondary);
    min-height: 100vh;
    display: flex;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-image:
        radial-gradient(circle at 80% 20%, var(--accent-glow) 0%, transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(59,130,246,0.04) 0%, transparent 50%);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: var(--accent-bg); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.12); }

/* ═══════════════════════════════════════════════════════════════
   SIDEBAR
   ═══════════════════════════════════════════════════════════════ */
.sidebar {
    position: fixed; left: 0; top: 0; bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-subtle);
    display: flex; flex-direction: column;
    z-index: 100;
    transition: transform var(--transition), width var(--transition);
}

.sidebar-brand {
    padding: var(--space-lg) var(--space-md);
    border-bottom: 1px solid var(--border-subtle);
    display: flex; align-items: center; gap: var(--space-sm);
}
.sidebar-brand .brand-icon {
    width: 36px; height: 36px;
    background: var(--accent);
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    color: #000;
    box-shadow: 0 0 12px var(--accent-glow);
    flex-shrink: 0;
}
.sidebar-brand .brand-icon svg {
    width: 18px; height: 18px;
}
.sidebar-brand .brand-text { font-weight: 700; font-size: var(--fs-heading); color: var(--text-primary); }
.sidebar-brand .brand-sub { font-size: var(--fs-label); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

.sidebar-nav { flex: 1; padding: var(--space-sm); overflow-y: auto; }
.sidebar-nav-section { font-size: var(--fs-label); text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--text-muted); padding: var(--space-sm) var(--space-sm) var(--space-xs); }
.sidebar-nav a {
    display: flex; align-items: center; gap: var(--space-sm);
    padding: var(--space-sm) var(--space-sm); border-radius: var(--radius-sm);
    color: var(--text-secondary); text-decoration: none;
    font-size: var(--fs-body); font-weight: 450;
    transition: all var(--transition);
    margin-bottom: var(--space-xs);
}
.sidebar-nav a:hover { background: var(--surface-hover); color: var(--text-primary); }
.sidebar-nav a.active {
    background: var(--accent-bg);
    color: var(--accent-text);
    border-left: 2px solid var(--accent);
    padding-left: calc(0.75rem - 2px);
}
.sidebar-nav a .nav-icon { width: 18px; height: 18px; flex-shrink: 0; opacity: 0.7; display: flex; align-items: center; justify-content: center; }
.sidebar-nav a .nav-icon svg { width: 18px; height: 18px; }
.sidebar-nav a.active .nav-icon { opacity: 1; }

.sidebar-footer {
    padding: var(--space-sm); border-top: 1px solid var(--border-subtle);
}
.sidebar-footer a {
    display: flex; align-items: center; gap: var(--space-sm);
    padding: var(--space-sm); color: var(--text-muted); text-decoration: none;
    font-size: var(--fs-body); border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.sidebar-footer a:hover { color: var(--text-secondary); background: var(--surface-hover); }

/* ── Sidebar Mobile Toggle ── */
.sidebar-toggle {
    display: none;
    position: fixed; top: 12px; left: 12px; z-index: 110;
    background: var(--surface); border: 1px solid var(--border-input);
    border-radius: var(--radius-sm); padding: var(--space-xs) var(--space-sm);
    cursor: pointer; color: var(--text-secondary);
}
.sidebar-toggle svg { width: 20px; height: 20px; }
.sidebar-mask {
    display: none;
    position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 99;
}

/* ═══════════════════════════════════════════════════════════════
   MAIN CONTENT AREA
   ═══════════════════════════════════════════════════════════════ */
.main {
    margin-left: var(--sidebar-width);
    flex: 1; display: flex; flex-direction: column;
    min-height: 100vh;
}

.main-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: var(--space-md) var(--space-content);
    border-bottom: 1px solid var(--border-subtle);
    background: var(--bg-sidebar);
    position: sticky; top: 0; z-index: 50;
}
.main-header h1 { font-size: var(--fs-heading); font-weight: 700; color: var(--text-primary); }
.main-header .header-actions { display: flex; align-items: center; gap: var(--space-md); }
.main-header .header-actions .user-name { font-size: var(--fs-body); color: var(--text-secondary); }

.main-content { padding: var(--space-content); flex: 1; }

/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — KPI Cards
   ═══════════════════════════════════════════════════════════════ */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}
.kpi-card {
    background: var(--surface);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow-kpi);
    transition: all var(--transition);
    position: relative; overflow: hidden;
}
.kpi-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 2px; background: var(--accent);
    opacity: 0; transition: opacity var(--transition);
}
.kpi-card:hover::before { opacity: 1; }
.kpi-card .kpi-value {
    font-family: var(--font-mono);
    font-size: var(--fs-heading); font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}
.kpi-card .kpi-trend {
    font-size: var(--fs-mono-sm); font-weight: 600;
    margin-top: var(--space-xs);
    display: inline-flex; align-items: center; gap: var(--space-xs);
}
.kpi-card .kpi-trend.up { color: var(--success); }
.kpi-card .kpi-trend.down { color: var(--danger); }
.kpi-card .kpi-label {
    font-size: var(--fs-label); color: var(--text-muted);
    margin-top: var(--space-xs); font-weight: 500;
    text-transform: uppercase; letter-spacing: 0.04em;
}
.kpi-card.warning .kpi-value { color: var(--warning); }
.kpi-card.danger .kpi-value { color: var(--danger); }
.kpi-card.success .kpi-value { color: var(--success); }
.kpi-card .kpi-header {
    display: flex; align-items: baseline; gap: var(--space-sm);
}
.kpi-card .kpi-delta {
    font-size: var(--fs-mono-sm); font-weight: 600;
    padding: var(--space-xs) var(--space-sm); border-radius: 4px;
    white-space: nowrap;
}
.kpi-delta.delta-up   { color: var(--success); background: rgba(16,185,129,0.1); }
.kpi-delta.delta-down { color: var(--danger);  background: rgba(244,63,94,0.1); }
.kpi-delta.delta-neutral { color: var(--text-muted); }
.hub-dense-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}
.kpi-card .kpi-sparkline {
    width: 100%; height: 36px; margin-top: var(--space-sm);
    opacity: 0.7;
}

/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — Cards & Panels
   ═══════════════════════════════════════════════════════════════ */
.card {
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-lg);
}
.card.form-narrow { max-width: 36rem; padding: var(--space-md); }
.card-header {
    padding: var(--space-md) var(--space-md);
    border-bottom: 1px solid var(--border-subtle);
    font-weight: 600; font-size: var(--fs-card-title);
    color: var(--text-primary);
    display: flex; align-items: center; justify-content: space-between;
}
.card-body { padding: var(--space-md); }

/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — Tables
   ═══════════════════════════════════════════════════════════════ */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: var(--fs-body); }
th {
    text-align: left; padding: var(--space-sm) var(--space-sm);
    color: var(--text-muted); font-weight: 600;
    font-size: var(--fs-mono-sm); text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-subtle);
    white-space: nowrap;
}
td {
    padding: var(--space-sm) var(--space-sm);
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}
tr:hover td { background: var(--surface-hover); }
tr:last-child td { border-bottom: none; }
td a { color: var(--accent-text); text-decoration: none; font-weight: 500; }
td a:hover { text-decoration: underline; }

/* ── tabular-nums for aligned data columns ── */
.tabular-nums { font-variant-numeric: tabular-nums; }

/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — Badges
   ═══════════════════════════════════════════════════════════════ */
.badge {
    display: inline-flex; align-items: center; gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px; font-size: var(--fs-mono-sm); font-weight: 500;
    white-space: nowrap;
}
.badge svg { width: 12px; height: 12px; flex-shrink: 0; }
.badge-open { background: var(--info-glow); color: var(--info); }
.badge-invoice { background: var(--accent-glow); color: var(--accent); }
.badge-progress { background: var(--warning-bg); color: var(--warning); }
.badge-done { background: var(--success-bg); color: var(--success); }
.badge-closed { background: rgba(110,110,119,0.15); color: var(--text-secondary); }
.badge-incomplete { background: var(--danger-bg); color: var(--danger); }
.badge-paused { background: var(--paused-bg); color: var(--paused); }
.badge-critical { background: var(--danger-bg); color: var(--danger); }
.badge-high { background: var(--accent-glow); color: var(--accent); }
.badge-medium { background: var(--warning-bg); color: var(--warning); }
.badge-low { background: rgba(110,110,119,0.15); color: var(--text-muted); }

.login-card {
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
}

/* Shared admin table (audit M3 — replaces per-cell inline styles that drifted
   from .table-wrap; admin pages previously duplicated these rules inline). */
.table { width: 100%; border-collapse: collapse; }
.table th { text-align: left; padding: var(--space-sm) var(--space-sm); border-bottom: 1px solid var(--border-subtle); font-size: var(--fs-mono-sm); color: var(--text-muted); }
.table td { padding: var(--space-sm) var(--space-sm); border-bottom: 1px solid var(--border-subtle); }

/* List-page pagination footer (audit L2 — server-side pages, hx-get swap). */
.pagination { display: flex; justify-content: flex-end; align-items: center; gap: var(--space-sm); padding: var(--space-sm) var(--space-md); border-top: 1px solid var(--border-subtle); }

/* ── Case-insensitive status/priority fallbacks (data-* attributes) ── */
[data-status="open" i] { background: var(--info-glow); color: var(--info); }
[data-status="in progress" i] { background: var(--warning-bg); color: var(--warning); }
[data-status="resolved" i] { background: var(--success-bg); color: var(--success); }
[data-status="closed" i] { background: rgba(110,110,119,0.15); color: var(--text-secondary); }
[data-status="assigned" i] { background: var(--info-glow); color: var(--info); }
[data-status="travel" i] { background: var(--warning-bg); color: var(--warning); }
[data-status="on site" i] { background: var(--warning-bg); color: var(--warning); }
[data-status="completed" i] { background: var(--success-bg); color: var(--success); }
[data-priority="critical" i] { background: var(--danger-bg); color: var(--danger); }
[data-priority="high" i] { background: var(--accent-glow); color: var(--accent); }
[data-priority="medium" i] { background: var(--warning-bg); color: var(--warning); }
[data-priority="low" i] { background: rgba(110,110,119,0.15); color: var(--text-muted); }

/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — Buttons
   ═══════════════════════════════════════════════════════════════ */
.btn {
    display: inline-flex; align-items: center; gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md); border-radius: var(--radius-sm);
    font-size: var(--fs-body); font-weight: 500; cursor: pointer;
    border: none; text-decoration: none;
    transition: all var(--transition);
    font-family: var(--font-sans);
}
.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 0 12px var(--accent-glow); }
.btn-outline {
    background: transparent; color: var(--text-secondary);
    border: 1px solid var(--border-input);
}
.btn-outline:hover { border-color: var(--accent); color: var(--text-primary); background: var(--surface-hover); }
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { color: var(--text-primary); background: var(--surface-hover); }
.btn:active { transform: scale(0.97); transition: 100ms ease-out; }
.btn-sm { padding: var(--space-xs) var(--space-sm); font-size: var(--fs-mono-sm); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.9; }

/* ── Disabled state ── */
.btn:disabled, .btn[disabled], .btn.disabled {
    opacity: 0.4; cursor: not-allowed; pointer-events: none;
}
.btn-primary:disabled { box-shadow: none; }

/* Hide native file control; label.btn-primary is the Upload file control */
.file-input-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ── Focus-visible (accessible focus rings) ── */
.btn:focus-visible,
.sidebar-nav a:focus-visible,
a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — Forms
   ═══════════════════════════════════════════════════════════════ */
.form-group { margin-bottom: var(--space-md); }
.form-group label {
    display: block; font-size: var(--fs-body); font-weight: 500;
    color: var(--text-secondary); margin-bottom: var(--space-xs);
}
.form-group .required::after { content: " *"; color: var(--danger); }
.form-input, .form-select, .form-textarea {
    width: 100%; padding: var(--space-sm) var(--space-sm);
    background: var(--surface-hover);
    border: 1px solid var(--border-input);
    border-radius: var(--radius-sm);
    color: var(--text-primary); font-size: var(--fs-body);
    font-family: var(--font-sans);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none; border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-input:disabled, .form-select:disabled, .form-textarea:disabled {
    opacity: 0.4; cursor: not-allowed;
}
.form-textarea { min-height: 120px; resize: vertical; }

/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — Flash / Alerts
   ═══════════════════════════════════════════════════════════════ */
.alert {
    padding: var(--space-sm) var(--space-md); border-radius: var(--radius-sm);
    font-size: var(--fs-body); margin-bottom: var(--space-md);
    border: 1px solid transparent;
    display: flex; align-items: center; gap: var(--space-sm);
}
.alert svg { width: 16px; height: 16px; flex-shrink: 0; }
.alert-error { background: var(--danger-bg); color: var(--danger); border-color: rgba(239,68,68,0.2); }
.alert-success { background: var(--success-bg); color: var(--success); border-color: rgba(16,185,129,0.2); }
.alert-warning { background: var(--warning-bg); color: var(--warning); border-color: rgba(245,158,11,0.2); }
.alert-info { background: var(--info-bg); color: var(--info); border-color: rgba(59,130,246,0.2); }

/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — Loading / Empty / Error States
   ═══════════════════════════════════════════════════════════════ */

/* ── HTMX Loading Indicator ── */
.htmx-indicator {
    display: none;
}
.htmx-request .htmx-indicator {
    display: inline-flex;
    align-items: center; gap: var(--space-xs);
}
.htmx-request.htmx-indicator {
    display: inline-flex;
    align-items: center; gap: var(--space-xs);
}

/* ── Inline Spinner ── */
.spinner {
    display: inline-block; width: 16px; height: 16px;
    border: 2px solid var(--border-input);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Skeleton Loading ── */
.skeleton {
    background: var(--surface-hover);
    border-radius: var(--radius-sm);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}
@keyframes skeleton-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}
.skeleton-text { height: 0.85rem; margin-bottom: var(--space-sm); }
.skeleton-heading { height: 1.2rem; width: 60%; margin-bottom: var(--space-sm); }
.skeleton-row { height: 0.75rem; margin-bottom: var(--space-xs); }

/* ── Empty State ── */
.empty-state {
    text-align: center; padding: var(--space-xl) var(--space-lg);
    color: var(--text-muted);
}
.empty-state svg {
    width: 48px; height: 48px; margin-bottom: var(--space-sm);
    opacity: 0.3;
}
.empty-state .empty-title {
    font-size: var(--fs-card-title); font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}
.empty-state .empty-subtitle {
    font-size: var(--fs-body);
}

/* ── HTMX Settling Transition ── */
.htmx-settling {
    opacity: 0;
    transition: opacity 0.15s ease;
}

/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — Modal
   ═══════════════════════════════════════════════════════════════ */
.modal-overlay {
    position: fixed; inset: 0; z-index: 100;
    background: rgba(0, 0, 0, 0.75);
    display: flex; align-items: center; justify-content: center;
    animation: modalFadeIn 0.2s ease;
}
@keyframes modalFadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
.modal-box {
    background: var(--surface);
    border: 1px solid var(--border-strong, #2d2d38);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    max-width: 540px;
    width: 90%;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    animation: modalSlideIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex; flex-direction: column; gap: var(--space-md);
}
@keyframes modalSlideIn {
    from { transform: translateY(-20px); opacity: 0; }
    to   { transform: translateY(0); opacity: 1; }
}
.modal-box .modal-header {
    display: flex; align-items: center; justify-content: space-between;
}
.modal-box .modal-header h3 {
    font-size: var(--fs-card-title); font-weight: 600; color: var(--text-primary); margin: 0;
}
.modal-box .modal-close {
    background: none; border: none; cursor: pointer;
    color: var(--text-muted); font-size: var(--fs-heading); padding: var(--space-xs);
    line-height: 1;
}
.modal-box .modal-close:hover { color: var(--text-primary); }

/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — Toast
   ═══════════════════════════════════════════════════════════════ */
.toast-container {
    position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 200;
    display: flex; flex-direction: column; gap: var(--space-sm);
    pointer-events: none;
}
.toast {
    background: var(--surface-elevated, #16161b);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius-sm);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--fs-body); color: var(--text-secondary);
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    pointer-events: auto;
    animation: toastSlideIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    max-width: 360px;
}
@keyframes toastSlideIn {
    from { transform: translateX(100%); opacity: 0; }
    to   { transform: translateX(0); opacity: 1; }
}
.toast.toast-success { border-left-color: var(--success); }
.toast.toast-error   { border-left-color: var(--danger); }
.toast.toast-warning { border-left-color: var(--warning); }
.toast-fade-out {
    animation: toastFadeOut 0.3s ease forwards;
}
@keyframes toastFadeOut {
    to { opacity: 0; transform: translateX(50px); }
}

/* ═══════════════════════════════════════════════════════════════
   UTILITY
   ═══════════════════════════════════════════════════════════════ */
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-2 { gap: var(--space-sm); }
.mt-4 { margin-top: var(--space-md); }
.mb-4 { margin-bottom: var(--space-md); }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: var(--fs-body); }
.hub-version { font-size: var(--fs-mono-sm); } /* base.html + login.html 10px */
.mono { font-family: var(--font-mono); }

/* ── Theme Switcher (dev only) ── */
.theme-switcher {
    position: fixed; bottom: 1rem; right: 1rem; z-index: 999;
    display: flex; gap: var(--space-sm);
}
.theme-dot {
    width: 20px; height: 20px; border-radius: 50%;
    cursor: pointer; border: 2px solid var(--border-input);
    transition: all var(--transition);
}
.theme-mode {
    width: 26px; height: 22px; border-radius: 6px;
    cursor: pointer; border: 2px solid var(--border-input);
    background: var(--surface); font-size: var(--fs-body); line-height: 1;
    display: inline-flex; align-items: center; justify-content: center;
    transition: all var(--transition);
}
.theme-mode:hover { border-color: var(--accent); }
.theme-mode.active { border-color: var(--accent); box-shadow: 0 0 8px var(--accent-glow); }
.theme-dot:hover { border-color: var(--accent); }
.theme-dot.active { border-color: var(--accent); box-shadow: 0 0 8px var(--accent-glow); }
.theme-dot.power-grid { background: #e8642c; }
.theme-dot.midnight-ops { background: #00f0ff; }
.theme-dot.coral-reef { background: #f43f5e; }

/* Utilisation split-inspect (Hub only, mockup B) */
.util-split {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
    gap: var(--space-md);
    align-items: start;
}
.util-kpis { margin-bottom: var(--space-sm); }
.week-bar {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin: 0 0 var(--space-md);
}
.week-label {
    font-family: var(--font-mono);
    font-size: var(--fs-body);
}
.util-insight {
    margin: 0 0 var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--surface-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    font-size: var(--fs-body);
    color: var(--text-secondary);
}
.util-insight strong { color: var(--text-primary); }
.util-tabs {
    display: flex;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-sm) 0;
    flex-wrap: wrap;
}
.util-tabs button {
    border: 1px solid transparent;
    background: none;
    padding: var(--space-sm) var(--space-sm);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--fs-body);
    font-family: var(--font-sans);
    color: var(--text-muted);
    cursor: pointer;
}
.util-tabs button[aria-selected="true"] {
    background: var(--accent-bg);
    color: var(--accent-text);
}
.util-band {
    display: inline-block;
    font-size: var(--fs-body-sm);
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px;
    background: var(--surface-elevated);
    color: var(--text-muted);
}
.util-band-lt60 { background: var(--surface-elevated); color: var(--text-muted); }
.util-band-60-85 { background: var(--success-bg); color: var(--success); }
.util-band-gt85 { background: var(--warning-bg); color: var(--warning); }
.util-band-gt100 { background: var(--danger-bg); color: var(--danger); }
.util-drill {
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    position: sticky;
    top: 1rem;
}
.util-drill-kicker {
    font-size: var(--fs-label);
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
}
.util-drill-sub {
    font-size: var(--fs-body);
    color: var(--text-muted);
    margin: var(--space-xs) 0 var(--space-sm);
}
[x-cloak] { display: none !important; }
@media (max-width: 900px) {
    .util-split { display: block; }
    .util-drill { position: static; margin-top: var(--space-md); }
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
   ═══════════════════════════════════════════════════════════════ */

/* md — collapse sidebar to icon-only rail */
@media (max-width: 768px) {
    :root { --sidebar-width: 60px; }

    .sidebar {
        width: 60px;
        transform: none;
        overflow: hidden;
    }
    .sidebar-brand { padding: var(--space-md) var(--space-sm); justify-content: center; }
    .sidebar-brand .brand-text,
    .sidebar-brand .brand-sub { display: none; }
    .sidebar-nav { padding: var(--space-sm) var(--space-xs); }
    .sidebar-nav-section { display: none; }
    .sidebar-nav a {
        justify-content: center;
        padding: var(--space-sm) 0;
        font-size: 0;
        gap: 0;
    }
    .sidebar-nav a .nav-icon { margin: 0; }
    .sidebar-nav a.active {
        border-left: none;
        border-right: 2px solid var(--accent);
    }
    .sidebar-footer a { justify-content: center; font-size: 0; padding: var(--space-sm) 0; }
    .sidebar-footer a svg { margin: 0; }

    .main { margin-left: 60px; }
    .main-header { padding: var(--space-md) var(--space-md); }
    .main-content { padding: var(--space-md); }
}

.sig-paper {
    display: inline-block;
    background: #ffffff;
    padding: var(--space-xs);
    line-height: 0;
}
.sig-paper img {
    max-height: 96px;
    background: #ffffff;
}

/* sm — fully stacked */
@media (max-width: 640px) {
    .kpi-grid { grid-template-columns: 1fr; }
    .main-header { flex-wrap: wrap; gap: var(--space-sm); }
    .main-header .header-actions { font-size: var(--fs-body); }
}

.roster-selects {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: end;
}
.roster-selects > div { flex: 0 1 auto; }
.roster-selects .roster-select {
    width: auto;
    min-width: 10rem;
    max-width: 16rem;
}
.roster-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-xs);
}
.roster-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    background: var(--surface-elevated);
    border: 1px solid var(--border-card);
    font-size: var(--fs-body-sm);
}
.roster-suggest {
    list-style: none;
    margin: var(--space-xs) 0 0;
    padding: 0;
    border: 1px solid var(--border-card);
    background: var(--surface);
    max-height: 12rem;
    overflow: auto;
}
.roster-suggest button {
    display: block;
    width: 100%;
    text-align: left;
    padding: var(--space-xs) var(--space-sm);
    background: none;
    border: 0;
    cursor: pointer;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}
