:root {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --border-color: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-muted: #6c757d;
    --accent-primary: #0d6efd;
    --accent-secondary: #0b5ed7;
    --sidebar-width: 280px;
    --sidebar-width-collapsed: 88px;
    --bottom-nav-height: 65px;
}

body {
    background-color: var(--bg-primary);
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
}

.app-layout {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    min-height: 100vh;
    transition: grid-template-columns 0.3s ease;
}

#sidebar {
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    transition: width 0.3s ease;
}

.sidebar-header {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
}
.sidebar-header i {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-right: 1rem;
}
.sidebar-header .title {
    font-weight: 700;
    font-size: 1.5rem;
    line-height: 1.2;
}
.sidebar-header .subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
}

#page-navigation .nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    white-space: nowrap;
}
#page-navigation .nav-link i {
    margin-right: 0.75rem;
    font-size: 1.2rem;
}
#page-navigation .nav-link.active,
#page-navigation .nav-link:hover {
    background-color: var(--accent-primary);
    color: #fff;
}

.sidebar-footer {
    margin-top: auto;
}

#main-content {
    padding: 2rem;
    overflow-y: auto;
}

.content-page {
    display: none;
}
.content-page.active {
    display: block;
}

.card {
    border: none;
    border-radius: 0.75rem;
    background-color: var(--bg-secondary);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.card-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 1.1rem;
}

.stat-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.25rem;
    display: flex;
    align-items: center;
}
.stat-card .icon {
    font-size: 1.75rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 1rem;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.stat-card .details .title {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}
.stat-card .details .number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.usulan-card {
    padding: 1rem;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    height: 100%;
}
.usulan-card.clickable-card:hover {
    cursor: pointer;
    background-color: #e9ecef;
    border-color: var(--accent-primary);
}
.usulan-title {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    min-height: 2.5em;
}
.usulan-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.table-responsive {
    max-height: 70vh;
}

.table th {
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.8rem;
    background-color: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 2;
}

.table td {
    vertical-align: middle;
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-primary);
}
.login-card {
    background-color: var(--bg-secondary);
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 450px;
    text-align: center;
}

.chart-container {
    height: 350px;
}
.chart-container .card-body {
    display: flex;
    flex-direction: column;
    height: 100%;
}
 .chart-container .card-body h5 {
    flex-shrink: 0;
 }
.chart-container .card-body div[id$="Chart"] {
    flex-grow: 1;
}

/* Sidebar Collapsed State */
.app-layout.sidebar-collapsed {
    grid-template-columns: var(--sidebar-width-collapsed) 1fr;
}
.app-layout.sidebar-collapsed #sidebar {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}
.app-layout.sidebar-collapsed .sidebar-header .title,
.app-layout.sidebar-collapsed .sidebar-header .subtitle,
.app-layout.sidebar-collapsed .nav-link span,
.app-layout.sidebar-collapsed .sidebar-footer #logout-button span {
    display: none;
}
.app-layout.sidebar-collapsed .sidebar-header,
.app-layout.sidebar-collapsed .nav-link,
.app-layout.sidebar-collapsed .sidebar-footer .btn {
    justify-content: center;
}
.app-layout.sidebar-collapsed .sidebar-header i {
    margin-right: 0;
}
.app-layout.sidebar-collapsed .nav-link i {
    margin-right: 0;
}

.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1020;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.08);
}
.mobile-bottom-nav .nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.7rem;
    padding: 0.5rem 0;
    flex-grow: 1;
    border-radius: 0;
}
.mobile-bottom-nav .nav-link i {
    font-size: 1.5rem;
    margin-right: 0;
    margin-bottom: 0.25rem;
}
.mobile-bottom-nav .nav-link.active {
    color: var(--accent-primary);
    background-color: transparent;
}
.mobile-bottom-nav .nav-link:hover {
     color: var(--accent-primary);
     background-color: var(--bg-primary);
}

#listModal, #detailModal, #galeriDetailModal {
    z-index: 1070;
}

#filePreviewModal {
    z-index: 1075;
}
.modal-backdrop {
    z-index: 1060;
}

#galeriDetailModalBody .list-group-item {
    cursor: pointer;
}
#galeriDetailModalBody .list-group-item:hover {
    background-color: #f1f1f1;
}

@media (max-width: 991.98px) {
    .app-layout, .app-layout.sidebar-collapsed {
        grid-template-columns: 1fr;
    }
    #sidebar {
        display: none;
    }
    #main-content {
        padding: 1rem;
        padding-bottom: calc(var(--bottom-nav-height) + 1rem);
    }
    .mobile-header {
        display: none !important;
    }
}

@media (min-width: 992px) {
    .mobile-bottom-nav {
        display: none;
    }
}