/* ==========================================================================
   CORREX Office — Institutional Design System
   Clean, restrained, WCAG AA contrast, responsive layout
   ========================================================================== */

:root {
    --cx-navy: #1b365d;
    --cx-navy-hover: #132744;
    --cx-accent: #2b547e;
    --cx-bg: #f6f7f9;
    --cx-surface: #ffffff;
    --cx-sidebar-bg: #f2f0ea;
    --cx-border: #dfe3e8;
    --cx-text: #16191d;
    --cx-text-muted: #525866;
    --cx-radius: 0.375rem;
    --cx-sidebar-width: 256px;
    --cx-topbar-height: 60px;

    --bs-primary: #1b365d;
    --bs-primary-rgb: 27, 54, 93;
    --bs-link-color: #1b365d;
    --bs-link-hover-color: #132744;
}

body.bg-dark,
[data-bs-theme="dark"] {
    --cx-bg: #111315;
    --cx-surface: #1a1d21;
    --cx-sidebar-bg: #16191d;
    --cx-border: #2c313a;
    --cx-text: #e6e8ec;
    --cx-text-muted: #9aa1ac;
}

/* Base typography & surfaces */
body {
    background-color: var(--cx-bg);
    color: var(--cx-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 0.9375rem;
    line-height: 1.5;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

code, pre, .font-monospace, .tabular-nums {
    font-variant-numeric: tabular-nums;
}

/* Primary & outline buttons — WCAG AA contrast */
.btn-primary {
    background-color: var(--cx-navy);
    border-color: var(--cx-navy);
    color: #ffffff;
}
.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
    background-color: var(--cx-navy-hover) !important;
    border-color: var(--cx-navy-hover) !important;
    color: #ffffff !important;
}

.btn-outline-primary {
    color: var(--cx-navy);
    border-color: var(--cx-navy);
}
.btn-outline-primary:hover,
.btn-outline-primary:focus {
    background-color: var(--cx-navy);
    border-color: var(--cx-navy);
    color: #ffffff;
}

.text-primary {
    color: var(--cx-navy) !important;
}
body.bg-dark .text-primary {
    color: #7da6d8 !important;
}

/* Cards & tables */
.card {
    background-color: var(--cx-surface);
    border: 1px solid var(--cx-border);
    border-radius: var(--cx-radius);
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}
.card-header,
.card-footer {
    background-color: transparent;
    border-color: var(--cx-border);
}

.table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--cx-text);
    --bs-table-border-color: var(--cx-border);
}
.table thead th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--cx-text-muted);
    border-bottom-width: 1px;
}

/* App Shell Layout (Responsive) */
#layout {
    display: flex;
    min-height: 100vh;
    padding-left: var(--cx-sidebar-width);
    transition: padding-left 0.2s ease;
}

#layout.sidebar-collapsed {
    padding-left: 0;
}

.sidebar {
    width: var(--cx-sidebar-width);
    background-color: var(--cx-sidebar-bg);
    border-right: 1px solid var(--cx-border);
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 1035;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease;
}

#layout.sidebar-collapsed .sidebar {
    transform: translateX(-100%);
}

.topbar-section {
    height: var(--cx-topbar-height);
    min-height: var(--cx-topbar-height);
    background-color: var(--cx-surface);
    border-bottom: 1px solid var(--cx-border);
}

.sidebar .topbar-section {
    background-color: var(--cx-sidebar-bg);
    padding: 0 1.25rem;
}

.nav-section-title {
    font-size: 0.6875rem;
    letter-spacing: 0.07em;
    font-weight: 600;
    color: var(--cx-text-muted);
    text-transform: uppercase;
    padding: 0.875rem 0.875rem 0.25rem;
}

.sidebar .nav-link {
    color: var(--cx-text);
    border-radius: var(--cx-radius);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 2px;
    transition: background-color 0.12s ease, color 0.12s ease;
}

.sidebar .nav-link:hover {
    background-color: rgba(27, 54, 93, 0.08);
    color: var(--cx-navy);
}

.sidebar .nav-link.active {
    background-color: var(--cx-navy);
    color: #ffffff;
}

body.bg-dark .sidebar .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: #ffffff;
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    z-index: 1030;
}

/* Mobile & Tablet (< 992px) */
@media (max-width: 991.98px) {
    #layout,
    #layout.sidebar-collapsed {
        padding-left: 0;
    }

    .sidebar {
        transform: translateX(-100%);
    }

    #layout.sidebar-mobile-open .sidebar {
        transform: translateX(0);
    }

    #layout.sidebar-mobile-open .sidebar-backdrop {
        display: block;
    }
}

/* Dark mode refinements (preserving status badge colors!) */
body.bg-dark .bg-white,
body.bg-dark .bg-light {
    background-color: var(--cx-surface) !important;
    color: var(--cx-text) !important;
}
body.bg-dark .text-dark {
    color: var(--cx-text) !important;
}
body.bg-dark .text-muted {
    color: var(--cx-text-muted) !important;
}
body.bg-dark .border,
body.bg-dark .border-top,
body.bg-dark .border-bottom,
body.bg-dark .border-start,
body.bg-dark .border-end {
    border-color: var(--cx-border) !important;
}
body.bg-dark .form-control,
body.bg-dark .form-select,
body.bg-dark .dropdown-menu,
body.bg-dark .modal-content {
    background-color: #16191d;
    color: var(--cx-text);
    border-color: var(--cx-border);
}
body.bg-dark .dropdown-item {
    color: var(--cx-text);
}
body.bg-dark .dropdown-item:hover {
    background-color: #252a32;
}

/* ==========================================================================
   Top-Middle Notification Alert System
   ========================================================================== */
.app-notification-stack {
    position: fixed;
    top: 1.25rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1095;
    width: 100%;
    max-width: 580px;
    padding: 0 1rem;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.app-notification-alert {
    pointer-events: auto;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.18), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    border-radius: 0.5rem;
    border-width: 1px;
    border-style: solid;
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 0.9rem 1.15rem;
    animation: appAlertSlideDown 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes appAlertSlideDown {
    from {
        opacity: 0;
        transform: translateY(-16px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Green-like Success */
.app-alert-success {
    background-color: #ecfdf5 !important;
    border-color: #a7f3d0 !important;
    color: #065f46 !important;
}

/* Red-like Danger / Error */
.app-alert-danger {
    background-color: #fef2f2 !important;
    border-color: #fecaca !important;
    color: #991b1b !important;
}

/* Yellow-like Warning */
.app-alert-warning {
    background-color: #fffbeb !important;
    border-color: #fde68a !important;
    color: #92400e !important;
}

/* Blue-like Info */
.app-alert-info {
    background-color: #f0f9ff !important;
    border-color: #bae6fd !important;
    color: #075985 !important;
}

/* Dark mode adjustments */
body.bg-dark .app-alert-success {
    background-color: #064e3b !important;
    border-color: #047857 !important;
    color: #ecfdf5 !important;
}
body.bg-dark .app-alert-danger {
    background-color: #7f1d1d !important;
    border-color: #991b1b !important;
    color: #fef2f2 !important;
}
body.bg-dark .app-alert-warning {
    background-color: #78350f !important;
    border-color: #92400e !important;
    color: #fffbeb !important;
}
body.bg-dark .app-alert-info {
    background-color: #0c4a6e !important;
    border-color: #0369a1 !important;
    color: #f0f9ff !important;
}