:root {
    --bg-main: #070a13;
    --bg-card: rgba(19, 27, 46, 0.85);
    --bg-card-hover: rgba(27, 38, 66, 0.95);
    --border-color: rgba(99, 102, 241, 0.2);
    --accent-primary: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.4);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --sidebar-width: 250px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-main);
    background-image: 
        radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 60%),
        linear-gradient(rgba(7, 10, 19, 0.85), rgba(7, 10, 19, 0.92)),
        url('https://images.unsplash.com/photo-1592840496694-26d035b52b48?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--text-main);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Sidebar Desktop & Scrollable Compact */
.sidebar {
    width: var(--sidebar-width);
    background-color: rgba(19, 27, 46, 0.98);
    backdrop-filter: blur(12px);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(99, 102, 241, 0.3) transparent;
}

.sidebar::-webkit-scrollbar {
    width: 4px;
}
.sidebar::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.3);
    border-radius: 4px;
}

.sidebar-brand {
    padding: 18px 20px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border-color);
    text-shadow: 0 0 10px var(--accent-glow);
}

.sidebar-menu {
    list-style: none;
    padding: 12px 12px 30px 12px !important;
    flex-grow: 1;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 18px;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.88rem;
    border-radius: 8px;
    margin: 1px 0;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-menu li a:hover {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.12), transparent);
    color: var(--text-main);
    transform: translateX(4px);
}

.sidebar-menu li a.active {
    color: var(--text-main);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.25), rgba(99, 102, 241, 0.1));
    border-left: 3px solid var(--accent-primary);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.15);
}

/* Accordion / Collapse Menu Styling */
.menu-divider {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 12px 14px 6px 14px;
    letter-spacing: 1.2px;
    font-weight: 700;
    opacity: 0.7;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    margin-top: 8px;
    border-radius: 6px;
    transition: all 0.25s ease;
}

.menu-divider:hover {
    background-color: rgba(99, 102, 241, 0.08);
    color: var(--text-main);
    opacity: 1;
}

.menu-divider::after {
    content: '›';
    font-size: 1rem;
    font-weight: bold;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0.6;
}

.menu-divider.collapsed::after {
    transform: rotate(0deg);
}

.menu-divider:not(.collapsed)::after {
    transform: rotate(90deg);
    color: var(--accent-primary);
}

.submenu-group {
    display: grid;
    grid-template-rows: 1fr;
    opacity: 1;
    visibility: visible;
    transition: grid-template-rows 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.3s ease-in-out, 
                visibility 0.3s ease-in-out;
}

.submenu-group > ul {
    overflow: hidden;
    list-style: none;
    padding: 2px 0 6px 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.submenu-group.collapsed {
    grid-template-rows: 0fr;
    opacity: 0;
    visibility: hidden;
}

/* Overlay / Tirai latar belakang saat sidebar mobile terbuka */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(7, 10, 19, 0.75);
    backdrop-filter: blur(4px);
    z-index: 900;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* Main Wrapper */
.main-wrapper {
    flex-grow: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* Navbar Top */
.topbar {
    height: 65px;
    background-color: rgba(19, 27, 46, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 25px;
    position: sticky;
    top: 0;
    z-index: 800;
}

.hamburger-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px 8px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Content Area */
.content {
    padding: 25px;
    flex-grow: 1;
}

/* Cards & Grid */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background-color: var(--bg-card);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
    border-color: rgba(99, 102, 241, 0.5);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.card-title {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.card-value {
    font-size: 1.75rem;
    font-weight: 700;
    text-shadow: 0 0 12px rgba(255, 255, 255, 0.15);
}

/* PS Status Grid & Cards */
.ps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.ps-card {
    background-color: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.5);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.ps-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: 0 12px 35px var(--accent-glow);
}

.ps-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.badge-tersedia { background: rgba(16, 185, 129, 0.25); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.4); }
.badge-rental { background: rgba(239, 68, 68, 0.25); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.4); }
.badge-maintenance { background: rgba(245, 158, 11, 0.25); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.4); }
.badge-nonaktif { background: rgba(148, 163, 184, 0.25); color: var(--text-muted); border: 1px solid rgba(148, 163, 184, 0.4); }

.timer-display {
    font-size: 2.2rem;
    font-weight: 800;
    font-family: 'Courier New', Courier, monospace;
    color: #38bdf8;
    text-align: center;
    margin: 10px 0;
    text-shadow: 0 0 15px rgba(56, 189, 248, 0.6);
    letter-spacing: 2px;
}

/* Forms & Tables */
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-weight: 500;
}
.form-control {
    width: 100%;
    padding: 12px 16px;
    background-color: rgba(7, 10, 19, 0.7);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-main);
    font-size: 1rem;
    transition: all 0.2s;
}
.form-control:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn {
    padding: 10px 18px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.82rem;
}
.btn-primary { 
    background: linear-gradient(135deg, #4f46e5, var(--accent-primary)); 
    color: #fff; 
    box-shadow: 0 4px 15px var(--accent-glow);
}
.btn-primary:hover { 
    background: linear-gradient(135deg, #4338ca, #4f46e5); 
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
    transform: translateY(-2px);
}

.btn-danger { 
    background: linear-gradient(135deg, #dc2626, var(--danger)); 
    color: #fff; 
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}
.btn-danger:hover {
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.6);
    transform: translateY(-2px);
}

.btn-success { 
    background: linear-gradient(135deg, #059669, var(--success)); 
    color: #fff; 
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}
.btn-success:hover {
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.6);
    transform: translateY(-2px);
}

.btn-block { width: 100%; }

.table-responsive {
    width: 100%;
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    background-color: var(--bg-card);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}
th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}
th {
    background-color: rgba(255,255,255,0.03);
    font-weight: 600;
    color: var(--text-muted);
}

/* --- PERBAIKAN UTAMA RESPONSIVE MOBILE SIDEBAR --- */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%) !important;
        width: 260px !important;
        padding-bottom: 10px;
    }
    
    /* Memaksa sidebar bergeser masuk ke layar saat kelas .active ditambahkan */
    .sidebar.active {
        transform: translateX(0) !important;
    }

    .sidebar-brand {
        padding: 14px 16px !important;
        font-size: 1rem !important;
    }
    .sidebar-menu {
        padding: 4px 0 !important;
    }
    .sidebar-menu li a {
        padding: 8px 16px !important;
        font-size: 0.85rem !important;
        gap: 8px !important;
    }
    .menu-divider {
        font-size: 0.68rem !important;
        padding: 10px 16px 4px 16px !important;
        margin-top: 4px !important;
        letter-spacing: 0.5px;
    }

    .main-wrapper {
        margin-left: 0 !important;
    }
    .hamburger-btn {
        display: block !important;
    }
    .content {
        padding: 12px;
    }
    table, thead, tbody, th, td, tr {
        display: block;
    }
    thead tr {
        position: absolute;
        top: -9999px;
        left: -9999px;
    }
    tr {
        margin-bottom: 12px;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        padding: 8px;
    }
    td {
        border: none;
        position: relative;
        padding-left: 50%;
        text-align: right;
    }
    td:before {
        position: absolute;
        left: 12px;
        width: 45%;
        padding-right: 10px;
        white-space: nowrap;
        text-align: left;
        font-weight: 600;
        color: var(--text-muted);
        content: attr(data-label);
    }

    .grid-4 {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
        margin-bottom: 15px !important;
    }
    .card {
        padding: 10px 12px !important;
        border-radius: 8px !important;
    }
    .card .card-title {
        font-size: 0.7rem !important;
        margin-bottom: 4px !important;
        opacity: 0.85;
    }
    .card .card-value {
        font-size: 1.1rem !important;
        font-weight: 700;
    }
}