/* ===== Color Scheme Variables ===== */
:root {
    --color-primary: #1a73e8;
    --color-primary-dark: #1557b0;
    --color-accent: #34a853;
    --color-danger: #ea4335;
    --color-warning: #fbbc04;
    --color-sidebar-bg: #1e293b;
    --color-sidebar-hover: #334155;
    --color-sidebar-active: #1a73e8;
    --color-content-bg: #f8f9fa;
    --color-text-light: #94a3b8;
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 0px;
    --navbar-height: 56px;
}

/* ===== Body ===== */
body {
    background-color: var(--color-content-bg);
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* ===== Navbar ===== */
.navbar-custom {
    background-color: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    height: var(--navbar-height);
    z-index: 1040;
}

.navbar-custom .navbar-brand {
    color: var(--color-primary);
    font-weight: 700;
    font-size: 1.2rem;
}

.navbar-custom .navbar-brand:hover {
    color: var(--color-primary-dark);
}

.navbar-custom .nav-link {
    color: #475569;
}

.navbar-custom .nav-link:hover {
    color: var(--color-primary);
}

.notification-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    font-size: 0.6rem;
    padding: 2px 5px;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.user-avatar-placeholder {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
}

/* ===== Sidebar ===== */
.sidebar {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--navbar-height));
    background-color: var(--color-sidebar-bg);
    overflow-y: auto;
    transition: transform 0.3s ease;
    z-index: 1030;
}

.sidebar .nav-link {
    color: var(--color-text-light);
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
}

.sidebar .nav-link:hover {
    color: #fff;
    background-color: var(--color-sidebar-hover);
}

.sidebar .nav-link.active {
    color: #fff;
    background-color: rgba(26, 115, 232, 0.15);
    border-left-color: var(--color-sidebar-active);
}

.sidebar .nav-link i {
    width: 20px;
    text-align: center;
}

.sidebar-header {
    padding: 1rem 1.25rem 0.5rem;
    color: var(--color-text-light);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

/* ===== Main Content ===== */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 1.5rem;
    min-height: calc(100vh - var(--navbar-height));
    margin-top: var(--navbar-height);
}

.main-content.no-sidebar {
    margin-left: 0;
}

/* ===== Footer ===== */
.footer {
    margin-left: var(--sidebar-width);
    padding: 1rem 1.5rem;
    background-color: #fff;
    border-top: 1px solid #e2e8f0;
    font-size: 0.85rem;
    color: #64748b;
}

.footer.no-sidebar {
    margin-left: 0;
}

/* ===== Breadcrumbs ===== */
.breadcrumb-item + .breadcrumb-item::before {
    content: ">";
}

/* ===== Status Badges ===== */
.badge-pulse {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.6; }
    100% { opacity: 1; }
}

/* ===== Buttons ===== */
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

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

.btn-success {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-danger {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
}

/* ===== Cards ===== */
.card {
    border: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    border-radius: 0.5rem;
}

/* ===== Tables ===== */
.table th {
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    color: #64748b;
    border-bottom-width: 1px;
}

/* ===== Alerts Auto-dismiss ===== */
.alert-dismissible {
    transition: opacity 0.5s ease;
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .footer {
        margin-left: 0;
    }
}

/* ===== Sidebar Overlay (mobile) ===== */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1025;
}

.sidebar-overlay.show {
    display: block;
}