/* ══════════════════════════════════════════════════════
   CSS - Customer Support System
   Mobile-first responsive stylesheet
   System theme (light/dark) via prefers-color-scheme
   ══════════════════════════════════════════════════════ */

/* ── Theme Variables ── */
:root,
[data-bs-theme="light"] {
    --css-body-bg: #f5f7fa;
    --css-surface-bg: #fff;
    --css-surface-secondary-bg: #fafbfc;
    --css-text-primary: #1a1f36;
    --css-text-muted: #6b7280;
    --css-border-color: #e5e7eb;
    --css-hover-bg: #f9fafb;
    --css-hover-subtle: #f3f4f6;
    --css-shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --css-shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --css-shadow-dropdown: 0 4px 12px rgba(0,0,0,0.1);
    --css-primary: #4f46e5;
    --css-primary-hover: #4338ca;
    --css-focus-ring: rgba(79, 70, 229, 0.25);
    --css-cursor-hover: rgba(79, 70, 229, 0.03);
    --css-code-color: #c02d76;
}

[data-bs-theme="dark"] {
    --css-body-bg: #1a1d21;
    --css-surface-bg: #212529;
    --css-surface-secondary-bg: #2b3035;
    --css-text-primary: #dee2e6;
    --css-text-muted: #9ca3af;
    --css-border-color: #373b3e;
    --css-hover-bg: #2b3035;
    --css-hover-subtle: #2b3035;
    --css-shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
    --css-shadow-md: 0 4px 12px rgba(0,0,0,0.3);
    --css-shadow-dropdown: 0 4px 12px rgba(0,0,0,0.4);
    --css-primary: #6366f1;
    --css-primary-hover: #818cf8;
    --css-focus-ring: rgba(99, 102, 241, 0.35);
    --css-cursor-hover: rgba(99, 102, 241, 0.06);
    --css-code-color: #f472b6;
}

/* ── Base ── */
html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--css-body-bg);
    color: var(--css-text-primary);
    -webkit-font-smoothing: antialiased;
}

h1:focus { outline: none; }

/* ── Links & Buttons ── */
a { color: var(--css-primary); }
a:hover { color: var(--css-primary-hover); }

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

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus,
.form-control:focus, .form-check-input:focus, .form-select:focus {
    box-shadow: 0 0 0 0.2rem var(--css-focus-ring);
    border-color: var(--css-primary);
}

/* ── Loading Screen ── */
.app-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

/* ── Cards ── */
.card {
    border: 1px solid var(--css-border-color);
    border-radius: 0.5rem;
    box-shadow: var(--css-shadow-sm);
    background: var(--css-surface-bg);
}

.card-header {
    background: var(--css-surface-secondary-bg);
    border-bottom: 1px solid var(--css-border-color);
    font-weight: 600;
    font-size: 0.875rem;
}

/* ── Stat Cards ── */
.stat-card {
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.stat-card-clickable {
    cursor: pointer;
}

.stat-card-clickable:hover {
    transform: translateY(-2px);
    box-shadow: var(--css-shadow-md);
}

.stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.5rem;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ── Ticket Mobile Cards ── */
.ticket-card-mobile {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--css-border-color);
    background: var(--css-surface-bg);
    transition: background 0.1s ease;
}

.ticket-card-mobile:first-child {
    border-radius: 0.5rem 0.5rem 0 0;
}

.ticket-card-mobile:last-child {
    border-bottom: none;
    border-radius: 0 0 0.5rem 0.5rem;
}

.ticket-card-mobile:hover {
    background: var(--css-hover-bg);
}

/* ── Tables ── */
.table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--css-text-muted);
    white-space: nowrap;
}

.table td {
    vertical-align: middle;
    font-size: 0.875rem;
}

.sortable {
    cursor: pointer;
    user-select: none;
}

.sortable:hover {
    color: var(--css-primary);
}

.cursor-pointer {
    cursor: pointer;
}

.cursor-pointer:hover td {
    background-color: var(--css-cursor-hover);
}

/* ── User Avatars ── */
.user-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--css-primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

.user-avatar-sm {
    width: 1.75rem;
    height: 1.75rem;
    font-size: 0.65rem;
}

/* ── Badges ── */
.badge {
    font-weight: 500;
    font-size: 0.7rem;
    padding: 0.3em 0.6em;
}

/* ── Forms ── */
.form-label {
    font-weight: 500;
}

.form-control-sm, .form-select-sm {
    font-size: 0.8125rem;
}

/* ── Thread ── */
.thread-body {
    font-size: 0.875rem;
    line-height: 1.6;
    word-break: break-word;
}

/* ── Validation ── */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid #22c55e;
}

.invalid {
    outline: 1px solid #ef4444;
}

.validation-message {
    color: #ef4444;
    font-size: 0.8rem;
}

/* ── Error UI ── */
#blazor-error-ui {
    color-scheme: light only;
    background: #fef3c7;
    bottom: 0;
    box-shadow: 0 -1px 4px rgba(0,0,0,0.1);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem;
    position: fixed;
    width: 100%;
    z-index: 1050;
    font-size: 0.875rem;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

.blazor-error-boundary {
    background: #ef4444;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
    border-radius: 0.375rem;
}

.blazor-error-boundary::after {
    content: "An error has occurred.";
}

/* ── Page Header ── */
.page-header {
    border-bottom: 1px solid var(--css-border-color);
    padding-bottom: 1rem;
}

/* ── Utilities ── */
code {
    color: var(--css-code-color);
}

details > summary {
    cursor: pointer;
}

/* ── Responsive adjustments ── */
@media (max-width: 575.98px) {
    .stat-value {
        font-size: 1.25rem;
    }

    .stat-icon {
        width: 2.25rem;
        height: 2.25rem;
        font-size: 1rem;
    }

    h1, .h1, h2, .h2, h3, .h3 {
        font-size: 1.25rem;
    }
}

/* ── Dropdown animations ── */
.dropdown-menu {
    border: 1px solid var(--css-border-color);
    box-shadow: var(--css-shadow-dropdown);
    border-radius: 0.5rem;
    font-size: 0.875rem;
}

.dropdown-item:hover {
    background: var(--css-hover-subtle);
}

/* ── Dark Mode Table & Form overrides ── */
[data-bs-theme="dark"] .table {
    --bs-table-bg: var(--css-surface-bg);
    --bs-table-striped-bg: var(--css-surface-secondary-bg);
    --bs-table-hover-bg: var(--css-hover-bg);
    --bs-table-border-color: var(--css-border-color);
}

[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
    background-color: var(--css-surface-secondary-bg);
    border-color: var(--css-border-color);
    color: var(--css-text-primary);
}

[data-bs-theme="dark"] .form-control::placeholder {
    color: var(--css-text-muted);
}

[data-bs-theme="dark"] .bg-light {
    background-color: var(--css-surface-secondary-bg) !important;
    color: var(--css-text-primary) !important;
}

[data-bs-theme="dark"] .table-light,
[data-bs-theme="dark"] .table-light > th,
[data-bs-theme="dark"] .table-light > td,
[data-bs-theme="dark"] .table > :not(caption) > * > .table-light {
    --bs-table-bg: var(--css-surface-secondary-bg);
    --bs-table-color: var(--css-text-primary);
    color: var(--css-text-primary) !important;
    border-color: var(--css-border-color);
}