:root {
    color-scheme: light;

    --color-bg: #ffffff;
    --color-bg-subtle: #fafafa;
    --color-bg-muted: #f4f4f5;

    --color-border: #e4e4e7;
    --color-border-strong: #d4d4d8;

    --color-text: #18181b;
    --color-text-muted: #71717a;
    --color-text-subtle: #a1a1aa;

    --color-primary: #18181b;
    --color-primary-hover: #27272a;
    --color-primary-fg: #ffffff;

    --color-accent: #4f46e5;
    --color-accent-soft: #eef2ff;

    --color-success: #047857;
    --color-success-soft: #ecfdf5;
    --color-warning: #b45309;
    --color-warning-soft: #fffbeb;
    --color-danger: #b91c1c;
    --color-danger-soft: #fef2f2;
    --color-info: #0369a1;
    --color-info-soft: #f0f9ff;

    --color-topbar-bg: rgba(255, 255, 255, 0.85);
    --color-ring: rgba(24, 24, 27, 0.08);
    --color-on-danger: #ffffff;

    --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg width='10' height='6' viewBox='0 0 10 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2371717a' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");

    --radius-sm: 4px;
    --radius: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    --shadow: 0 4px 12px -4px rgba(0, 0, 0, 0.08);

    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;

    --font-xs: 11px;
    --font-sm: 13px;
    --font-base: 14px;
    --font-lg: 16px;
    --font-xl: 18px;
    --font-2xl: 22px;
    --font-3xl: 28px;

    --sidebar-width: 240px;
    --topbar-height: 56px;
    --content-max-width: 1280px;
}

[data-theme="dark"] {
    color-scheme: dark;

    --color-bg: #1c1c21;
    --color-bg-subtle: #18181d;
    --color-bg-muted: #292930;

    --color-border: #2e2e36;
    --color-border-strong: #3d3d47;

    --color-text: #f4f4f5;
    --color-text-muted: #a1a1aa;
    --color-text-subtle: #71717a;

    --color-primary: #fafafa;
    --color-primary-hover: #e4e4e7;
    --color-primary-fg: #18181b;

    --color-accent: #818cf8;
    --color-accent-soft: rgba(99, 102, 241, 0.18);

    --color-success: #34d399;
    --color-success-soft: rgba(16, 185, 129, 0.16);
    --color-warning: #fbbf24;
    --color-warning-soft: rgba(245, 158, 11, 0.16);
    --color-danger: #f87171;
    --color-danger-soft: rgba(239, 68, 68, 0.16);
    --color-info: #60a5fa;
    --color-info-soft: rgba(59, 130, 246, 0.16);

    --color-topbar-bg: rgba(28, 28, 33, 0.85);
    --color-ring: rgba(244, 244, 245, 0.14);
    --color-on-danger: #18181b;

    --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg width='10' height='6' viewBox='0 0 10 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23a1a1aa' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --shadow: 0 4px 12px -4px rgba(0, 0, 0, 0.5);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
    font-size: var(--font-base);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "cv11", "ss01";
}
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 600; letter-spacing: -0.015em; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
table { border-collapse: collapse; width: 100%; }
::selection { background: var(--color-text); color: var(--color-primary-fg); }

/* ======== Layout shell ======== */
.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
}

.sidebar {
    border-right: 1px solid var(--color-border);
    background: var(--color-bg-subtle);
    padding: var(--space-4);
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    font-weight: 600;
    font-size: var(--font-base);
    color: var(--color-text);
}
.sidebar-brand .bi { font-size: 18px; }

.sidebar-section { display: flex; flex-direction: column; gap: var(--space-1); }
.sidebar-section-label {
    font-size: var(--font-xs);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-subtle);
    padding: 0 var(--space-2);
    margin-bottom: 2px;
    font-weight: 500;
}

.sidebar-nav { display: flex; flex-direction: column; gap: 1px; }
.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 6px var(--space-2);
    border-radius: var(--radius);
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: var(--font-sm);
    transition: background 0.1s, color 0.1s;
}
.sidebar-nav a:hover {
    background: var(--color-bg-muted);
    color: var(--color-text);
}
.sidebar-nav a.active {
    background: var(--color-bg-muted);
    color: var(--color-text);
}
.sidebar-nav a .bi { font-size: 15px; opacity: 0.7; }
.sidebar-nav a.active .bi { opacity: 1; }

.sidebar-footer {
    margin-top: auto;
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
    font-size: var(--font-xs);
    color: var(--color-text-subtle);
}

/* ======== Main column ======== */
.main { display: flex; flex-direction: column; min-width: 0; }

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    height: var(--topbar-height);
    padding: 0 var(--space-6);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-topbar-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.topbar-title {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--color-text);
}
.topbar-actions { display: flex; align-items: center; gap: var(--space-2); }

.bell {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    color: var(--color-text-muted);
    transition: background 0.1s, color 0.1s;
}
.bell:hover { background: var(--color-bg-muted); color: var(--color-text); }
.bell .bi { font-size: 16px; }
.bell-count {
    position: absolute;
    top: 4px;
    right: 4px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: 999px;
    background: var(--color-danger);
    color: var(--color-on-danger);
    font-size: 10px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.content {
    padding: var(--space-8) var(--space-6);
    max-width: var(--content-max-width);
    width: 100%;
}

/* ======== Page header ======== */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}
.page-title {
    font-size: var(--font-2xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text);
}
.page-description {
    color: var(--color-text-muted);
    font-size: var(--font-sm);
    margin-top: 4px;
}
.page-actions { display: flex; gap: var(--space-2); }

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-2);
}
.breadcrumb a:hover { color: var(--color-text); }
.breadcrumb-separator { color: var(--color-text-subtle); }

/* ======== Card ======== */
.card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    overflow: hidden;
}
.card-header {
    padding: var(--space-3) var(--space-5);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    background: var(--color-bg-subtle);
}
.card-header h2,
.card-header h3,
.card-title {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--color-text);
}
.card-body { padding: var(--space-5); }
.card-footer {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-subtle);
    font-size: var(--font-sm);
    color: var(--color-text-muted);
}
.card + .card { margin-top: var(--space-4); }

/* ======== Buttons ======== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 36px;
    padding: 0 var(--space-3);
    border-radius: var(--radius);
    border: 1px solid transparent;
    font-size: var(--font-sm);
    font-weight: 500;
    cursor: pointer;
    transition: background 0.1s, border-color 0.1s, color 0.1s;
    white-space: nowrap;
    text-decoration: none;
}
.btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn .bi { font-size: 14px; }

.btn-primary { background: var(--color-primary); color: var(--color-primary-fg); }
.btn-primary:hover { background: var(--color-primary-hover); }

.btn-secondary { background: var(--color-bg); color: var(--color-text); border-color: var(--color-border-strong); }
.btn-secondary:hover { background: var(--color-bg-muted); border-color: var(--color-border-strong); }

.btn-ghost { background: transparent; color: var(--color-text-muted); }
.btn-ghost:hover { background: var(--color-bg-muted); color: var(--color-text); }

.btn-danger { background: var(--color-bg); color: var(--color-danger); border-color: var(--color-border-strong); }
.btn-danger:hover { background: var(--color-danger-soft); border-color: var(--color-danger); }

.btn-success { background: var(--color-bg); color: var(--color-success); border-color: var(--color-border-strong); }
.btn-success:hover { background: var(--color-success-soft); border-color: var(--color-success); }

.btn-sm { height: 28px; padding: 0 10px; font-size: var(--font-xs); }
.btn-sm .bi { font-size: 12px; }

.btn-icon { padding: 0; width: 36px; }
.btn-icon.btn-sm { width: 28px; }

.btn-group { display: inline-flex; gap: var(--space-2); }

/* ======== Form ======== */
.input,
.select,
.textarea {
    width: 100%;
    height: 36px;
    padding: 0 var(--space-3);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius);
    background: var(--color-bg);
    font-size: var(--font-sm);
    color: var(--color-text);
    transition: border-color 0.1s, box-shadow 0.1s;
}
.input::placeholder { color: var(--color-text-subtle); }
.input:focus,
.select:focus,
.textarea:focus {
    outline: none;
    border-color: var(--color-text);
    box-shadow: 0 0 0 3px var(--color-ring);
}
.input:disabled,
.select:disabled,
.textarea:disabled {
    background: var(--color-bg-muted);
    color: var(--color-text-muted);
    cursor: not-allowed;
}
.textarea {
    height: auto;
    min-height: 80px;
    padding: var(--space-2) var(--space-3);
    resize: vertical;
    line-height: 1.5;
}
.select {
    appearance: none;
    background-image: var(--select-arrow);
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 30px;
}

.label {
    display: block;
    font-size: var(--font-xs);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 6px;
}
.helper {
    font-size: var(--font-xs);
    color: var(--color-text-muted);
    margin-top: 4px;
}
.field-error {
    font-size: var(--font-xs);
    color: var(--color-danger);
    margin-top: 4px;
    display: block;
    min-height: var(--font-xs);
}

.checkbox {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    user-select: none;
}
.checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
}
.checkbox-group { display: flex; flex-wrap: wrap; gap: var(--space-4); }

.form-grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-4);
}
.form-grid > .col-12 { grid-column: span 12; }
.form-grid > .col-8 { grid-column: span 8; }
.form-grid > .col-6 { grid-column: span 6; }
.form-grid > .col-4 { grid-column: span 4; }
.form-grid > .col-3 { grid-column: span 3; }
@media (max-width: 768px) {
    .form-grid > [class^="col-"] { grid-column: span 12; }
}

.form-actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-6);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.field-summary {
    background: var(--color-danger-soft);
    border: 1px solid rgba(185, 28, 28, 0.2);
    color: var(--color-danger);
    border-radius: var(--radius);
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-sm);
    margin-bottom: var(--space-4);
}
.field-summary ul { list-style: disc inside; }

/* ======== Filters bar ======== */
.filters {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-3);
    align-items: end;
    margin-bottom: var(--space-4);
}
.filters .col-12 { grid-column: span 12; }
.filters .col-4 { grid-column: span 4; }
.filters .col-3 { grid-column: span 3; }
.filters .col-2 { grid-column: span 2; }
.filters .filter-actions {
    grid-column: span 3;
    display: flex;
    gap: var(--space-2);
}
@media (max-width: 768px) {
    .filters > [class^="col-"],
    .filters .filter-actions { grid-column: span 12; }
}

/* ======== Table ======== */
.table-wrap {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    overflow: hidden;
}
.table { width: 100%; }
.table th,
.table td {
    padding: 10px var(--space-4);
    text-align: left;
    font-size: var(--font-sm);
    vertical-align: middle;
}
.table thead th {
    font-size: var(--font-xs);
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: var(--color-bg-subtle);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}
.table tbody tr { border-bottom: 1px solid var(--color-border); }
.table tbody tr:last-child { border-bottom: 0; }
.table tbody tr:hover { background: var(--color-bg-subtle); }
.table tbody td { color: var(--color-text); }
.table tbody td.muted { color: var(--color-text-muted); }

.table .actions { text-align: right; white-space: nowrap; }
.table .actions form { display: inline-block; }
.table .actions .btn { margin-left: 4px; }
.table .actions .btn:first-child { margin-left: 0; }

.empty {
    padding: var(--space-8);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-sm);
}
.empty .bi { font-size: 24px; display: block; margin-bottom: var(--space-2); color: var(--color-text-subtle); }

/* ======== Badges ======== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: var(--font-xs);
    font-weight: 500;
    line-height: 18px;
    white-space: nowrap;
}
.badge-neutral { background: var(--color-bg-muted); color: var(--color-text); }
.badge-muted { background: var(--color-bg-muted); color: var(--color-text-muted); }
.badge-success { background: var(--color-success-soft); color: var(--color-success); }
.badge-warning { background: var(--color-warning-soft); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-soft); color: var(--color-danger); }
.badge-info { background: var(--color-info-soft); color: var(--color-info); }
.badge-accent { background: var(--color-accent-soft); color: var(--color-accent); }
.badge-dot::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    display: inline-block;
}

/* ======== Stats ======== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}
@media (max-width: 1024px) {
    .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
}
.stat {
    padding: var(--space-5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
}
.stat-label {
    font-size: var(--font-xs);
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    display: flex;
    align-items: center;
    gap: 6px;
}
.stat-label .bi { font-size: 12px; }
.stat-value {
    font-size: var(--font-3xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
    margin-top: var(--space-3);
    line-height: 1.1;
}
.stat-trend {
    margin-top: var(--space-2);
    font-size: var(--font-xs);
    color: var(--color-text-muted);
}
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.text-info { color: var(--color-info); }

/* ======== Alerts (toasts inline) ======== */
.alert {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius);
    border: 1px solid;
    font-size: var(--font-sm);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
}
.alert .bi { font-size: 16px; flex-shrink: 0; margin-top: 1px; }
.alert-success { background: var(--color-success-soft); border-color: rgba(4, 120, 87, 0.2); color: var(--color-success); }
.alert-danger { background: var(--color-danger-soft); border-color: rgba(185, 28, 28, 0.2); color: var(--color-danger); }
.alert-info { background: var(--color-info-soft); border-color: rgba(3, 105, 161, 0.2); color: var(--color-info); }
.alert-close {
    margin-left: auto;
    cursor: pointer;
    background: none;
    border: 0;
    padding: 0;
    color: inherit;
    opacity: 0.5;
    font-size: 18px;
    line-height: 1;
}
.alert-close:hover { opacity: 1; }

/* ======== Pagination ======== */
.pagination {
    display: flex;
    gap: 4px;
    margin-top: var(--space-4);
    align-items: center;
    justify-content: flex-end;
}
.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--color-text);
    background: var(--color-bg);
}
.pagination a:hover { background: var(--color-bg-muted); }
.pagination .active {
    background: var(--color-primary);
    color: var(--color-primary-fg);
    border-color: var(--color-primary);
}

/* ======== Detail / definition list ======== */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3) var(--space-6);
}
.detail-item { display: flex; flex-direction: column; gap: 2px; }
.detail-label {
    font-size: var(--font-xs);
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.detail-value { font-size: var(--font-sm); color: var(--color-text); }

/* ======== Dropdown (custom, no Bootstrap) ======== */
.dropdown { position: relative; }
.dropdown-trigger {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    height: 36px;
    padding: 0 var(--space-3);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: var(--font-sm);
    font-weight: 500;
    cursor: pointer;
}
.dropdown-trigger:hover { background: var(--color-bg-muted); }
.dropdown-trigger .bi { font-size: 14px; color: var(--color-text-muted); }
.dropdown-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 4px);
    min-width: 180px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 4px;
    box-shadow: var(--shadow);
    display: none;
    z-index: 50;
}
.dropdown.open .dropdown-menu { display: block; }
.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-size: var(--font-sm);
    color: var(--color-text);
    width: 100%;
    text-align: left;
}
.dropdown-item:hover { background: var(--color-bg-muted); }
.dropdown-divider { height: 1px; background: var(--color-border); margin: 4px 0; }
.dropdown-user-info {
    padding: 6px 10px;
    font-size: var(--font-xs);
    color: var(--color-text-muted);
}
.dropdown-user-name {
    padding: 0 10px 6px;
    font-size: var(--font-sm);
    color: var(--color-text);
    font-weight: 500;
}

/* ======== Auth page ======== */
.auth-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-subtle);
    padding: var(--space-6);
}
.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
}
.auth-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    justify-content: center;
    margin-bottom: var(--space-6);
    font-weight: 600;
    font-size: var(--font-lg);
    color: var(--color-text);
}
.auth-title {
    text-align: center;
    margin-bottom: var(--space-6);
}
.auth-title h1 {
    font-size: var(--font-xl);
    font-weight: 600;
    color: var(--color-text);
}
.auth-title p {
    color: var(--color-text-muted);
    font-size: var(--font-sm);
    margin-top: 4px;
}

/* ======== Utilities ======== */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.text-muted { color: var(--color-text-muted); }
.text-xs { font-size: var(--font-xs); }
.text-sm { font-size: var(--font-sm); }
.font-mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.tabular { font-variant-numeric: tabular-nums; }
.hidden { display: none !important; }
.w-full { width: 100%; }
.text-right { text-align: right; }
.cursor-pointer { cursor: pointer; }

/* ======== Grid helpers ======== */
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); }
@media (max-width: 1024px) { .grid-2 { grid-template-columns: 1fr; } }

/* ======== Theme toggle ======== */
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: inline-block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: inline-block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }