:root {
    --bg-dark: #0f1115;
    --panel-bg: rgba(25, 28, 36, 0.6);
    --panel-border: rgba(255, 255, 255, 0.08);
    --primary: #4f46e5;
    --primary-hover: #6366f1;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --danger: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
    --glass-blur: blur(16px);
    --sidebar-width: 260px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background: transparent !important;
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Cosmic Background */
#cosmicCanvas {
    position: fixed !important;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -99 !important;
    background: #000 !important;
}

/* Glassmorphism utility */
.glass-panel {
    background: rgba(10, 12, 18, 0.6); /* Darker and clearer */
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 24px;
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.6);
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}
.btn-primary {
    background: var(--primary);
    color: white;
}
.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}
.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}
.btn-logout {
    background: transparent;
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
    width: 100%;
    justify-content: center;
}
.btn-logout:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Logo */
.logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 2px;
}
.logo span {
    color: var(--primary);
}
.badge {
    font-size: 10px;
    background: rgba(255,255,255,0.1);
    padding: 2px 6px;
    border-radius: 4px;
    vertical-align: super;
    letter-spacing: 1px;
}

/* --- Login Screen --- */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
.login-card {
    padding: 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    animation: slideUp 0.6s ease-out;
}
.login-card h2 {
    margin: 20px 0 10px;
    font-weight: 600;
}
.login-card p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 30px;
}
.input-group {
    position: relative;
    margin-bottom: 20px;
}
.input-group i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}
.input-group input {
    width: 100%;
    padding: 14px 14px 14px 45px;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    color: white;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s;
}
.input-group input:focus {
    border-color: var(--primary);
}
.login-card .btn {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: 16px;
}
.error-msg {
    color: var(--danger) !important;
    margin-top: 15px;
    margin-bottom: 0 !important;
    animation: shake 0.4s ease;
}

/* --- Dashboard Layout --- */
.dashboard-container {
    display: flex;
    height: 100vh;
    padding: 20px;
    gap: 20px;
    animation: fadeIn 0.6s ease;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 260px;
    display: flex;
    flex-direction: column;
    padding: 24px;
}
.sidebar-header {
    margin-bottom: 40px;
}
.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.nav-item {
    padding: 12px 16px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 12px;
}
.nav-item:hover, .nav-item.active {
    background: rgba(79, 70, 229, 0.1);
    color: var(--text-main);
}
.nav-item.active {
    border-left: 3px solid var(--primary);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow: hidden;
}

/* Topbar */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    gap: 15px;
}

.menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 20px;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    background: rgba(255,255,255,0.05);
}
.search-bar {
    position: relative;
    width: 300px;
}
.search-bar i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}
.search-bar input {
    width: 100%;
    padding: 10px 10px 10px 40px;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    color: white;
    outline: none;
    transition: border-color 0.3s;
}
.search-bar input:focus {
    border-color: var(--primary);
}
.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}
.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 15px rgba(79, 70, 229, 0.4);
}

.btn-icon-logout {
    background: rgba(239, 68, 68, 0.2);
    color: #ff5f5f;
    border: 1px solid rgba(239, 68, 68, 0.3);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-left: 10px;
    z-index: 1001;
}

.btn-icon-logout:hover {
    background: var(--danger);
    color: white;
    transform: scale(1.1);
}

/* Content Area */
.content-area {
    flex: 1;
    overflow-y: auto;
    padding-right: 10px;
}
.content-area::-webkit-scrollbar {
    width: 6px;
}
.content-area::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
}
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}
.stat-card {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: transform 0.3s;
}
.stat-card:hover {
    transform: translateY(-5px);
}
.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: rgba(79, 70, 229, 0.2);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}
.stat-icon.active-icon {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}
.stat-info h3 {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}
.stat-info p {
    font-size: 24px;
    font-weight: 700;
    margin-top: 4px;
}

/* Table */
.table-container {
    overflow-x: auto;
}
.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
.data-table th {
    padding: 16px;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 14px;
    border-bottom: 1px solid var(--panel-border);
}
.data-table td {
    padding: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 14px;
}
.data-table tbody tr {
    transition: background 0.3s;
}
.data-table tbody tr:hover {
    background: rgba(255,255,255,0.03);
}

/* Badges */
.status-badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}
.status-active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}
.status-pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.action-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    transition: color 0.3s;
}
.action-btn:hover {
    color: var(--primary);
}
.action-btn.delete:hover {
    color: var(--danger);
}

.loading-text {
    color: var(--text-muted);
    padding: 40px !important;
}

/* Animations */
@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Tariff Form Styling */
.tariff-form {
    padding: 30px;
    max-width: 800px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 30px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
}

.form-group label {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

.form-group label i {
    margin-right: 8px;
    color: var(--primary);
}

.form-group input {
    padding: 12px 16px;
    padding-right: 60px !important;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.form-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
    outline: none;
}

.input-suffix {
    position: absolute;
    right: 16px;
    bottom: 14px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 800;
}

.form-hint {
    font-size: 13px;
    color: #ffcc00;
    font-style: italic;
    opacity: 0.8;
}

/* --- Responsive Queries --- */
@media (max-width: 1024px) {
    .sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        bottom: 0;
        z-index: 1000;
        transition: var(--transition);
        width: 280px;
        background: #15171e; /* Solid background on mobile */
    }
    
    .sidebar.open {
        left: 0;
        box-shadow: 20px 0 50px rgba(0,0,0,0.5);
    }
    
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.7);
        backdrop-filter: blur(4px);
        z-index: 999;
    }
    
    .sidebar-overlay.active {
        display: block;
    }
    
    .menu-btn {
        display: block;
    }
    
    .dashboard-container {
        padding: 10px;
        gap: 10px;
    }
}

@media (max-width: 768px) {
    .topbar {
        padding: 12px 16px;
    }
    
    .search-bar {
        display: none; /* Hide search on small mobile to save space */
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .section-header .btn {
        width: 100%;
        justify-content: center;
    }
    
    .login-card {
        padding: 30px 20px;
        max-width: 90%;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .staff-form-grid {
        grid-template-columns: 1fr !important;
    }
    
    .data-table thead {
        display: none; /* Mobile table strategy: card-like rows */
    }
    
    .data-table, .data-table tbody, .data-table tr, .data-table td {
        display: block;
        width: 100%;
    }
    
    .data-table tr {
        margin-bottom: 15px;
        background: rgba(255,255,255,0.02);
        border-radius: 12px;
        padding: 10px;
        border: 1px solid var(--panel-border);
    }
    
    .data-table td {
        text-align: right;
        padding: 8px 10px;
        border-bottom: 1px solid rgba(255,255,255,0.05);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .data-table td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-muted);
        font-size: 12px;
    }
    
    .data-table td:last-child {
        border-bottom: none;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 20px;
    }
    
    .user-profile span {
        display: none; /* Hide username but keep logout button */
    }

    .btn-icon-logout {
        display: flex !important;
        width: 34px;
        height: 34px;
    }
}