/* =========================================================================
   FSIT Systems Management Console — design tokens & component classes
   Semantic CSS variables drive both themes. Flipping `html.dark` re-colors
   the entire UI; component classes below reference only var(--…) tokens.
   ========================================================================= */

:root {
    /* LIGHT theme */
    --color-bg: #f5f6f8; /* app background (soft gray, not pure white) */
    --color-surface: #ffffff; /* cards, sidebar, header */
    --color-surface-alt: #f9fafb; /* card headers, table header, hover rows */
    --color-border: #e5e7eb;
    --color-input-border: #cbd5e1; /* stronger than card border so fields read clearly */
    --color-text: #111827; /* primary text */
    --color-text-muted: #6b7280; /* secondary text / labels */
    --color-primary: #2563eb; /* accent */
    --color-primary-hover: #1d4ed8;
    --color-primary-soft: #eff6ff; /* active-nav tint, focus ring bg */
    --color-primary-contrast: #ffffff;
    --color-success: #059669;
    --color-success-soft: #ecfdf5;
    --color-danger: #dc2626;
    --color-danger-soft: #fef2f2;
    --color-warning: #d97706;
    --color-warning-soft: #fffbeb;
    --color-info: #2563eb;
    --color-info-soft: #eff6ff;
    --shadow-card: 0 1px 3px rgb(0 0 0 / .08), 0 1px 2px -1px rgb(0 0 0 / .06);
    --shadow-pop: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);
    color-scheme: light;
}

html.dark {
    /* DARK theme */
    --color-bg: #0f172a; /* slate-900, soft not black */
    --color-surface: #1e293b; /* slate-800 */
    --color-surface-alt: #273449;
    --color-border: #334155; /* slate-700 */
    --color-input-border: #475569; /* slate-600 — visible field edge in dark mode */
    --color-text: #e5e7eb; /* off-white, not pure #fff */
    --color-text-muted: #94a3b8;
    --color-primary: #3b82f6;
    --color-primary-hover: #60a5fa;
    --color-primary-soft: #1e3a5f;
    --color-primary-contrast: #ffffff;
    --color-success: #10b981;
    --color-success-soft: #12291f;
    --color-danger: #f87171;
    --color-danger-soft: #2a1416;
    --color-warning: #fbbf24;
    --color-warning-soft: #2a2210;
    --color-info: #60a5fa;
    --color-info-soft: #17263b;
    --shadow-card: 0 1px 3px rgb(0 0 0 / .4), 0 1px 2px -1px rgb(0 0 0 / .3);
    --shadow-pop: 0 10px 15px -3px rgb(0 0 0 / .5), 0 4px 6px -4px rgb(0 0 0 / .4);
    color-scheme: dark;
}

html, body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
}

/* Smooth theme transition for large surfaces only (avoids janky text flashes) */
body, .card, .app-sidebar, .app-header, .form-field, .btn {
    transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation-duration: .001ms !important;
    }
}

/* ---------- Validation ---------- */
.valid.modified:not([type="checkbox"]) {
    border-color: var(--color-success) !important;
    box-shadow: 0 0 0 1px var(--color-success);
}

.invalid {
    border-color: var(--color-danger) !important;
    box-shadow: 0 0 0 1px var(--color-danger);
}

.validation-message {
    color: var(--color-danger);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* ---------- Loading skeleton ---------- */
@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.skeleton {
    animation: shimmer 2s infinite linear;
    background: linear-gradient(to right, var(--color-surface-alt) 4%, var(--color-border) 25%, var(--color-surface-alt) 36%);
    background-size: 1000px 100%;
    border-radius: 0.375rem;
}

/* ---------- Toast animation ---------- */
@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutRight {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

.toast-enter { animation: slideInRight 0.3s ease-out; }
.toast-exit { animation: slideOutRight 0.3s ease-in; }

/* ---------- Custom scrollbar ---------- */
.custom-scrollbar::-webkit-scrollbar { width: 8px; height: 8px; }
.custom-scrollbar::-webkit-scrollbar-track { background: transparent; }

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

/* ---------- Form fields ---------- */
.form-field {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-input-border);
    border-radius: 0.5rem;
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    color: var(--color-text);
    background-color: var(--color-surface);
    cursor: auto;
}

.form-field::placeholder { color: var(--color-text-muted); }
.form-field select { cursor: pointer; }

.form-field:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 20%, transparent);
}

.form-field:disabled {
    background-color: var(--color-surface-alt);
    color: var(--color-text-muted);
    cursor: not-allowed;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.375rem;
}

.form-hint {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

/* ---------- Cards ---------- */
.card {
    background-color: var(--color-surface);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-surface-alt);
    border-top-left-radius: 0.75rem;
    border-top-right-radius: 0.75rem;
}

.card-body { padding: 1.5rem; }

/* ---------- Buttons ---------- */
.btn {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    white-space: nowrap;
}

.btn-sm { padding: 0.375rem 0.75rem; font-size: 0.875rem; border-radius: 0.375rem; }
.btn-xs { padding: 0.25rem 0.5rem; font-size: 0.75rem; border-radius: 0.375rem; }

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 25%, transparent);
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background-color: var(--color-primary); color: var(--color-primary-contrast); }
.btn-primary:hover:not(:disabled) { background-color: var(--color-primary-hover); box-shadow: var(--shadow-card); }

.btn-secondary {
    background-color: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}
.btn-secondary:hover:not(:disabled) { background-color: var(--color-surface-alt); }

.btn-success { background-color: var(--color-success); color: #fff; }
.btn-success:hover:not(:disabled) { filter: brightness(0.94); }

.btn-danger { background-color: var(--color-danger); color: #fff; }
.btn-danger:hover:not(:disabled) { filter: brightness(0.94); }

.btn-ghost { background-color: transparent; color: var(--color-text-muted); }
.btn-ghost:hover:not(:disabled) { background-color: var(--color-surface-alt); color: var(--color-text); }

/* ---------- Status badge ---------- */
.badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.125rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1.25rem;
}

.badge-success { background-color: var(--color-success-soft); color: var(--color-success); }
.badge-danger { background-color: var(--color-danger-soft); color: var(--color-danger); }
.badge-warning { background-color: var(--color-warning-soft); color: var(--color-warning); }
.badge-info { background-color: var(--color-info-soft); color: var(--color-info); }
.badge-muted { background-color: var(--color-surface-alt); color: var(--color-text-muted); }

/* ---------- Filter chip (clickable badge-style toggle button) ---------- */
.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1.25rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: filter 0.1s ease, transform 0.05s ease, box-shadow 0.1s ease;
}
.filter-chip:hover { filter: brightness(0.96); }
.filter-chip:active { transform: scale(0.97); }

.filter-chip-success { background-color: var(--color-success); color: #fff; }
.filter-chip-success:hover { box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-success) 30%, transparent); }
.filter-chip-success.active { box-shadow: 0 0 0 2px var(--color-surface), 0 0 0 4px var(--color-success); }

.filter-chip-danger { background-color: var(--color-danger); color: #fff; }
.filter-chip-danger:hover { box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-danger) 30%, transparent); }
.filter-chip-danger.active { box-shadow: 0 0 0 2px var(--color-surface), 0 0 0 4px var(--color-danger); }

.filter-chip-clear { background-color: var(--color-surface-alt); color: var(--color-text-muted); border-color: var(--color-border); }
.filter-chip-clear:hover { background-color: var(--color-border); color: var(--color-text); }

/* ---------- Data table ---------- */
.admin-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }

.admin-table thead th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    background-color: var(--color-surface-alt);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
}

.admin-table tbody td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}

.admin-table tbody tr:last-child td { border-bottom: none; }
.admin-table tbody tr:hover { background-color: var(--color-surface-alt); }

/* ---------- Toggle switch ---------- */
.switch { position: relative; display: inline-block; width: 40px; height: 22px; }
.switch input { opacity: 0; width: 0; height: 0; }

.switch .slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background-color: var(--color-border);
    border-radius: 9999px;
    transition: background-color .2s;
}

.switch .slider::before {
    content: "";
    position: absolute;
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: #fff;
    border-radius: 50%;
    transition: transform .2s;
    box-shadow: 0 1px 2px rgb(0 0 0 / .3);
}

.switch input:checked + .slider { background-color: var(--color-primary); }
.switch input:checked + .slider::before { transform: translateX(18px); }
.switch input:focus-visible + .slider { box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 25%, transparent); }

/* ---------- Sidebar nav links ---------- */
.admin-nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    margin: 0.125rem 0.5rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    border-left: 3px solid transparent;
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
}

.admin-nav-link:hover {
    background-color: var(--color-surface-alt);
    color: var(--color-text);
}

.admin-nav-link.active {
    background-color: var(--color-primary-soft);
    color: var(--color-primary);
    border-left-color: var(--color-primary);
}

.admin-nav-link svg { flex-shrink: 0; }

/* ---------- Code chip ---------- */
.code-chip {
    font-family: ui-monospace, 'Cascadia Code', Consolas, monospace;
    font-size: 0.8125rem;
    padding: 0.0625rem 0.375rem;
    border-radius: 0.375rem;
    background-color: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

/* ---------- Blazor error UI ---------- */
#blazor-error-ui {
    background: var(--color-danger);
    color: #fff;
    bottom: 0;
    display: none;
    left: 0;
    padding: 0.75rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 -1px 2px rgb(0 0 0 / .2);
}

#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 1.25rem; top: 0.75rem; }