:root {
    --dx-sidebar-bg: #0b1b3b;
    --dx-sidebar-hover: rgba(255, 255, 255, 0.06);
    --dx-sidebar-active: rgba(59, 130, 246, 0.18);
    --dx-sidebar-active-border: #3b82f6;
    --dx-sidebar-text: #cbd5e1;
    --dx-sidebar-muted: #64748b;
    --dx-primary: #2563eb;
    --dx-primary-light: #3b82f6;
    --dx-bg: #f1f5f9;
    --dx-surface: #ffffff;
    --dx-text: #0f172a;
    --dx-text-muted: #64748b;
    --dx-border: #e2e8f0;
    --dx-radius: 16px;
    --dx-radius-sm: 12px;
    --dx-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
    --dx-shadow-lg: 0 10px 40px rgba(15, 23, 42, 0.1);
    --dx-sidebar-width: 260px;
}

body.dark-theme {
    --dx-sidebar-bg: #0b1221;
    --dx-bg: #0f172a;
    --dx-surface: #1e293b;
    --dx-text: #f1f5f9;
    --dx-text-muted: #94a3b8;
    --dx-border: #334155;
    --dx-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    --dx-shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.35);
}

/* Base app background - keep AdminLTE grid layout intact */
.app-main {
    background-color: var(--dx-bg, #f1f5f9);
}

.app-content {
    padding: 1.5rem;
}

/* Header redesign */
.app-header {
    background-color: var(--dx-surface, #ffffff) !important;
    border-bottom: 1px solid var(--dx-border, #e2e8f0);
    box-shadow: var(--dx-shadow, 0 4px 20px rgba(15, 23, 42, 0.06));
    min-height: calc(3.5rem + 1px);
    padding: 0.5rem 1rem;
    z-index: 1040;
}

.app-header .navbar-nav {
    gap: 0.5rem;
}

.app-header .nav-link {
    color: var(--dx-text-muted);
    border-radius: 50%;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: all 0.2s ease;
}

.app-header .nav-link:hover {
    background-color: var(--dx-bg);
    color: var(--dx-text);
}

.app-header .nav-link .bi {
    font-size: 1.25rem;
}

.dx-header-brand {
    font-weight: 600;
    color: var(--dx-text);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.dx-header-brand small {
    color: var(--dx-text-muted);
    font-weight: 500;
}

.dx-header-search {
    position: relative;
    min-width: 320px;
    max-width: 480px;
    width: 100%;
}

.dx-header-search .form-control {
    background-color: var(--dx-bg);
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.65rem 1rem 0.65rem 2.75rem;
    font-size: 0.95rem;
    color: var(--dx-text);
    transition: all 0.2s ease;
}

.dx-header-search .form-control:focus {
    background-color: var(--dx-surface);
    border-color: var(--dx-primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.dx-header-search .search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--dx-text-muted);
    pointer-events: none;
}

.dx-user-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    padding: 0.35rem 0.75rem 0.35rem 0.35rem;
    border-radius: 999px;
    transition: background-color 0.2s ease;
}

.dx-user-menu:hover {
    background-color: var(--dx-bg);
}

.dx-user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
}

.dx-user-info {
    line-height: 1.2;
}

.dx-user-name {
    font-weight: 600;
    color: var(--dx-text);
    font-size: 0.9rem;
}

.dx-user-role {
    color: var(--dx-text-muted);
    font-size: 0.75rem;
}

/* Notifications badge */
.dx-notify-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 999px;
    background: #ef4444;
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--dx-surface);
}

/* Sidebar redesign */
.app-sidebar {
    background-color: var(--dx-sidebar-bg) !important;
    width: var(--dx-sidebar-width);
    box-shadow: var(--dx-shadow-lg);
    border-right: none;
}

.app-sidebar .sidebar-brand {
    border-bottom: none;
    padding: 1.25rem 1.25rem 0.75rem;
}

.app-sidebar .brand-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.35rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
}

.dx-brand-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.25rem;
}

.dx-sidebar-search {
    padding: 0.75rem 1.25rem;
}

.dx-sidebar-search .input-group {
    background: rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    overflow: hidden;
}

.dx-sidebar-search .input-group-text {
    background: transparent;
    border: none;
    color: var(--dx-sidebar-muted);
    padding-left: 1rem;
}

.dx-sidebar-search .form-control {
    background: transparent;
    border: none;
    color: #fff;
    padding-left: 0.25rem;
}

.dx-sidebar-search .form-control::placeholder {
    color: var(--dx-sidebar-muted);
}

.dx-sidebar-search .kbd-shortcut {
    font-size: 0.65rem;
    padding: 0.15rem 0.4rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    color: var(--dx-sidebar-muted);
    margin-right: 0.5rem;
}

.dx-create-btn {
    margin: 0 1.25rem 0.75rem;
    padding: 0.65rem 1rem;
    border-radius: 10px;
    font-weight: 600;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border: none;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    transition: all 0.2s ease;
}

.dx-create-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4);
}

.app-sidebar .sidebar-wrapper {
    overflow-x: hidden;
}

/* Sidebar menu */
.app-sidebar .sidebar-menu {
    padding: 0.5rem 0.75rem;
}

.app-sidebar .sidebar-menu > .nav-item {
    margin-bottom: 0.25rem;
}

.app-sidebar .sidebar-menu .nav-link {
    color: var(--dx-sidebar-text);
    border-radius: 10px;
    padding: 0.7rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

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

.app-sidebar .sidebar-menu .nav-link.active {
    background-color: var(--dx-sidebar-active);
    color: #fff;
    box-shadow: inset 3px 0 0 var(--dx-sidebar-active-border);
}

.app-sidebar .sidebar-menu .nav-icon {
    font-size: 1.15rem;
    width: 24px;
    text-align: center;
    opacity: 0.9;
}

.app-sidebar .nav-arrow {
    margin-left: auto;
    font-size: 0.8rem;
    transition: transform 0.2s ease;
}

.app-sidebar .menu-open > .nav-link .nav-arrow {
    transform: rotate(90deg);
}

.app-sidebar .nav-treeview {
    border-left: none;
    margin-left: 0;
    padding-left: 0.5rem;
    padding-top: 0.25rem;
}

.app-sidebar .nav-treeview .nav-link {
    padding: 0.55rem 0.75rem 0.55rem 1rem;
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--dx-sidebar-muted);
}

.app-sidebar .nav-treeview .nav-link:hover,
.app-sidebar .nav-treeview .nav-link.active {
    color: #fff;
    background-color: transparent;
    box-shadow: none;
}

/* Upgrade card */
.dx-upgrade-card {
    margin: auto 1.25rem 1.25rem;
    padding: 1rem;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(37, 99, 235, 0.12));
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.dx-upgrade-card:hover {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.3), rgba(37, 99, 235, 0.2));
}

.dx-upgrade-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.dx-upgrade-text {
    flex: 1;
}

.dx-upgrade-title {
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
}

.dx-upgrade-subtitle {
    color: var(--dx-sidebar-muted);
    font-size: 0.75rem;
}

.dx-upgrade-arrow {
    color: var(--dx-sidebar-muted);
    font-size: 0.9rem;
}

/* Dashboard content */
.dx-welcome-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.dx-welcome-title {
    font-size: clamp(1.35rem, 2.2vw, 1.75rem);
    font-weight: 700;
    color: var(--dx-text);
    margin-bottom: 0.25rem;
}

.dx-welcome-subtitle {
    color: var(--dx-text-muted);
    font-size: 0.95rem;
}

.dx-period-select {
    background-color: var(--dx-surface);
    border: 1px solid var(--dx-border);
    border-radius: 10px;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    color: var(--dx-text);
    font-weight: 500;
}

/* Stat cards */
.dx-stat-card {
    background-color: var(--dx-surface);
    border-radius: var(--dx-radius);
    padding: 1.25rem;
    box-shadow: var(--dx-shadow);
    border: 1px solid var(--dx-border);
    display: flex;
    align-items: center;
    gap: 1rem;
    height: 100%;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    text-decoration: none;
    color: inherit;
}

.dx-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--dx-shadow-lg);
    color: inherit;
}

.dx-stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.dx-stat-icon.blue { background: #eff6ff; color: #2563eb; }
.dx-stat-icon.green { background: #f0fdf4; color: #16a34a; }
.dx-stat-icon.purple { background: #faf5ff; color: #9333ea; }
.dx-stat-icon.orange { background: #fff7ed; color: #ea580c; }

body.dark-theme .dx-stat-icon.blue { background: rgba(37, 99, 235, 0.15); }
body.dark-theme .dx-stat-icon.green { background: rgba(22, 163, 74, 0.15); }
body.dark-theme .dx-stat-icon.purple { background: rgba(147, 51, 234, 0.15); }
body.dark-theme .dx-stat-icon.orange { background: rgba(234, 88, 12, 0.15); }

.dx-stat-info {
    flex: 1;
    min-width: 0;
}

.dx-stat-label {
    color: var(--dx-text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.15rem;
}

.dx-stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dx-text);
    line-height: 1.2;
}

.dx-stat-meta {
    color: var(--dx-text-muted);
    font-size: 0.75rem;
}

.dx-stat-chart {
    width: 70px;
    height: 40px;
    flex-shrink: 0;
}

.dx-stat-chart svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

/* Cards */
.dx-card {
    background-color: var(--dx-surface);
    border-radius: var(--dx-radius);
    box-shadow: var(--dx-shadow);
    border: 1px solid var(--dx-border);
    overflow: hidden;
    height: 100%;
}

.dx-card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--dx-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.dx-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dx-text);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin: 0;
}

.dx-card-title .bi {
    color: var(--dx-text-muted);
    font-size: 1.1rem;
}

.dx-card-body {
    padding: 1.5rem;
}

/* Chart legend */
.dx-chart-legend {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.dx-legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 0.35rem;
}

/* Empty state */
.dx-empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--dx-text-muted);
}

.dx-empty-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--dx-bg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #16a34a;
    margin-bottom: 1rem;
}

.dx-empty-title {
    font-weight: 600;
    color: var(--dx-text);
    margin-bottom: 0.25rem;
}

.dx-empty-subtitle {
    font-size: 0.9rem;
}

/* Filter dropdown inside card header */
.dx-filter-select {
    background-color: var(--dx-bg);
    border: 1px solid var(--dx-border);
    border-radius: 10px;
    padding: 0.45rem 2rem 0.45rem 0.75rem;
    font-size: 0.85rem;
    color: var(--dx-text);
    font-weight: 500;
}

/* Responsive */
@media (max-width: 991.98px) {
    .app-sidebar {
        margin-left: calc(-1 * var(--dx-sidebar-width));
    }

    .app-sidebar-open .app-sidebar {
        margin-left: 0;
    }

    .dx-header-search {
        display: none !important;
    }

    .app-header {
        padding: 0.75rem 1rem;
    }

    .dx-user-info {
        display: none;
    }
}

@media (max-width: 767.98px) {
    .app-content {
        padding: 1rem;
    }

    .dx-stat-card {
        padding: 1rem;
    }

    .dx-stat-icon {
        width: 44px;
        height: 44px;
        font-size: 1.25rem;
    }

    .dx-stat-value {
        font-size: 1.4rem;
    }

    .dx-stat-chart {
        display: none;
    }

    .dx-card-header,
    .dx-card-body {
        padding: 1rem;
    }
}