:root {
    --primary-color: #0f172a;
    --secondary-color: #1e3a8a;
    --accent-color: #2563eb;
    --bg-color: #f1f5f9;
    --card-bg: #ffffff;
    --text-color: #334155;
    --border-color: #cbd5e1;
    --success-color: #16a34a;
    --warning-color: #ca8a04;
    --danger-color: #dc2626;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { background-color: var(--bg-color); color: var(--text-color); min-height: 100vh; display: flex; flex-direction: column; }

#authContainer { display: flex; justify-content: center; align-items: center; flex-grow: 1; padding: 2rem; background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%); }
.auth-card { background: white; padding: 2.5rem; border-radius: 12px; width: 100%; max-width: 440px; box-shadow: 0 20px 25px -5px rgba(0,0,0,0.3); }
.auth-title { text-align: center; margin-bottom: 1.5rem; color: var(--primary-color); font-weight: 700; }
.auth-links { display: flex; justify-content: space-between; margin-top: 1rem; font-size: 0.8rem; }
.auth-links a { color: var(--accent-color); text-decoration: none; cursor: pointer; font-weight: 600; }

header { background-color: var(--primary-color); color: white; padding: 1rem 0; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
.header-inner { max-width: 1700px; width: 100%; margin: 0 auto; padding: 0 1rem; display: flex; justify-content: space-between; align-items: center; }
.logo-area h1 { font-size: 1.3rem; font-weight: 600; letter-spacing: 0.5px; }
.logo-area span { font-size: 0.8rem; color: #94a3b8; display: block; }
.nav-controls { display: flex; align-items: center; gap: 1rem; }

.user-info { font-size: 0.9rem; font-weight: 500; background: rgba(255,255,255,0.1); padding: 0.4rem 0.8rem; border-radius: 6px; }
.btn-logout { background-color: var(--danger-color); color: white; padding: 0.4rem 0.8rem; border-radius: 6px; border: none; cursor: pointer; font-size: 0.85rem; font-weight: 600; }
.btn-change-pass { background-color: var(--accent-color); color: white; padding: 0.4rem 0.8rem; border-radius: 6px; border: none; cursor: pointer; font-size: 0.85rem; font-weight: 600; transition: background-color 0.2s; }
.btn-change-pass:hover { background-color: #1d4ed8; }

.container { max-width: 1700px; width: 100%; margin: 1.5rem auto; padding: 0 1rem; flex-grow: 1; }
.tabs-container { display: flex; margin-bottom: 1.5rem; border-bottom: 2px solid #cbd5e1; overflow-x: auto; width: 100%; }
.tab-btn { flex: 1; text-align: center; padding: 0.75rem 1.25rem; border: 1px solid transparent; background: none; font-weight: 600; font-size: 0.9rem; color: #64748b; border-radius: 6px 6px 0 0; cursor: pointer; white-space: nowrap; transition: color 0.2s, background-color 0.2s; }
.tab-btn.active { color: var(--accent-color); background-color: white; border: 1px solid #cbd5e1; border-bottom: 2px solid white; }

.dashboard-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; min-width: 0; }
.admin-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; min-width: 0; }
.dashboard-grid > * { min-width: 0; }
.admin-grid > * { min-width: 0; }
@media (min-width: 768px) { .admin-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1200px) { .dashboard-grid.split { grid-template-columns: 360px 1fr; } }
.card { background: var(--card-bg); border-radius: 8px; border: 1px solid var(--border-color); padding: 1.5rem; box-shadow: 0 1px 3px rgba(0,0,0,0.05); margin-bottom: 1.5rem; }
.card-title { font-size: 1.1rem; color: var(--primary-color); margin-bottom: 1.25rem; font-weight: 600; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #e2e8f0; padding-bottom: 0.5rem; }

.filter-wrapper { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; font-weight: normal; color: var(--text-color); }
.filter-select { padding: 0.35rem 0.75rem; font-size: 0.85rem; border: 1px solid var(--border-color); border-radius: 4px; background: white; cursor: pointer; font-weight: 600; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 0.8rem; font-weight: 600; margin-bottom: 0.3rem; color: #475569; }
.form-control { width: 100%; padding: 0.6rem; border: 1px solid var(--border-color); border-radius: 6px; font-size: 0.9rem; color: var(--text-color); }
.btn-primary { background-color: var(--accent-color); color: white; width: 100%; padding: 0.65rem; font-weight: 600; border-radius: 6px; border: none; cursor: pointer; font-size: 0.9rem; }
.btn-primary:hover { background-color: #1d4ed8; }
.btn-secondary { background-color: #64748b; color: white; width: 100%; padding: 0.65rem; font-weight: 600; border-radius: 6px; border: none; cursor: pointer; font-size: 0.9rem; margin-top: 0.5rem; }
.btn-danger { background-color: var(--danger-color); color: white; padding: 0.35rem 0.7rem; font-size: 0.8rem; border-radius: 4px; border: none; font-weight: 600; cursor: pointer; }

.table-responsive { overflow-x: auto; background: white; border-radius: 6px; }
table { width: 100%; border-collapse: collapse; text-align: left; font-size: 0.85rem; }
th { background-color: #f8fafc; color: var(--primary-color); padding: 0.85rem; font-weight: 600; border-bottom: 2px solid var(--border-color); border-top: 1px solid var(--border-color); }
td { padding: 0.85rem; border-bottom: 1px solid #e2e8f0; vertical-align: middle; }
tr:hover { background-color: #f8fafc; }

.action-group { display: flex; gap: 0.35rem; align-items: center; flex-wrap: nowrap; white-space: nowrap; }
.action-btn { padding: 0.35rem 0.75rem; font-size: 0.8rem; border-radius: 4px; border: none; font-weight: 600; cursor: pointer; transition: background-color 0.2s, opacity 0.2s; display: inline-flex; align-items: center; justify-content: center; }
.action-btn:hover { opacity: 0.9; }
.action-btn.btn-primary,
.action-btn.btn-secondary,
.action-btn.btn-danger,
.action-btn.btn-success,
.action-btn.btn-warning,
.action-btn.btn-assign,
.action-btn.btn-approve,
.action-btn.btn-reject {
    width: auto;
    margin: 0;
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    border-radius: 4px;
}
.action-btn.btn-assign, .action-btn.btn-primary { background-color: var(--accent-color); color: white; }
.action-btn.btn-approve, .action-btn.btn-success { background-color: var(--success-color); color: white; }
.action-btn.btn-reject, .action-btn.btn-warning { background-color: #ea580c; color: white; }
.action-btn.btn-secondary { background-color: #64748b; color: white; }
.action-btn.btn-danger { background-color: var(--danger-color); color: white; }

.status { padding: 0.25rem 0.6rem; border-radius: 4px; font-size: 0.75rem; font-weight: 600; display: inline-block; text-transform: uppercase; letter-spacing: 0.3px; }
.status-unassigned { background-color: #cbd5e1; color: #334155; }
.status-assigned { background-color: #dbeafe; color: #1e40af; }
.status-review { background-color: #fef9c3; color: #854d0e; }
.status-filed { background-color: #dcfce7; color: #166534; }

.critical-delay { background-color: #fee2e2 !important; color: #991b1b !important; font-weight: 700; border-left: 4px solid var(--danger-color); }
.lock-badge { color: var(--danger-color); font-size: 0.75rem; font-weight: bold; background: #ffebe8; padding: 4px 8px; border-radius: 4px; border: 1px solid #fecaca; }
.date-editor { font-size: 0.85rem; padding: 0.25rem; border: 1px solid var(--border-color); border-radius: 4px; width: 130px; max-width: 100%; }

.analytics-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 1024px) { .analytics-grid { grid-template-columns: 450px 1fr; } }
.chart-container { display: flex; justify-content: center; align-items: center; min-height: 340px; padding: 1rem; }

.leaderboard-row { display: flex; align-items: center; justify-content: space-between; padding: 0.85rem 1rem; border-bottom: 1px solid #e2e8f0; }
.leaderboard-row:last-child { border-bottom: none; }
.rank-badge { width: 28px; height: 28px; border-radius: 50%; background: #e2e8f0; display: flex; justify-content: center; align-items: center; font-weight: 700; font-size: 0.85rem; }
.rank-1 { background: #fef08a; color: #854d0e; border: 1px solid #fde047; }
.rank-2 { background: #e2e8f0; color: #475569; }
.rank-3 { background: #ffedd5; color: #c2410c; }

.export-btn { background-color: #16a34a; color: white; font-weight: 600; padding: 0.5rem 1rem; font-size: 0.85rem; border: none; border-radius: 4px; cursor: pointer; }
.export-group { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem; }

.modal-backdrop { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(15, 23, 42, 0.6); display: flex; justify-content: center; align-items: center; z-index: 1000; padding: 1rem; }
.modal-surface { background: white; border-radius: 8px; width: 100%; max-width: 500px; max-height: 90vh; display: flex; flex-direction: column; box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1); border: 1px solid var(--border-color); overflow: hidden; }
.modal-header { background: var(--primary-color); color: white; padding: 1rem 1.5rem; display: flex; justify-content: space-between; align-items: center; }
.modal-header h3 { font-size: 1.1rem; font-weight: 600; }
.modal-close-trigger { background: transparent; border: none; color: #94a3b8; font-size: 1.4rem; cursor: pointer; font-weight: bold; }
.modal-close-trigger:hover { color: white; }
.modal-body { padding: 1.5rem; overflow-y: auto; flex-grow: 1; }

.hidden { display: none !important; }

/* Premium Glassmorphic Loading backdrops */
.spinner-backdrop {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.7);
    display: flex; flex-direction: column;
    justify-content: center; align-items: center;
    z-index: 9999;
    backdrop-filter: blur(4px);
    transition: all 0.3s ease;
}
.spinner {
    width: 50px; height: 50px;
    border: 5px solid #cbd5e1;
    border-top: 5px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.spinner-text {
    color: white; margin-top: 1rem; font-weight: 600; font-size: 1rem; font-family: 'Segoe UI', sans-serif;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* Modern toggle switch styling */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
}
.switch input { 
    opacity: 0;
    width: 0;
    height: 0;
}
.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #cbd5e1;
    transition: .3s;
    border-radius: 22px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}
input:checked + .slider {
    background-color: var(--accent-color);
}
input:checked + .slider:before {
    transform: translateX(22px);
}

/* Keyframe animations for biometric scanner circle & scanline */
@keyframes pulseScanner {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.03); opacity: 1; }
}
@keyframes moveScanner {
    0% { top: 0; }
    50% { top: 100%; }
    100% { top: 0; }
}

/* Double-column grid for engagements */
.engagement-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin-top: 1rem;
}
@media (min-width: 640px) {
    .engagement-grid {
        grid-template-columns: 1fr 1fr;
    }
}
.engagement-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}
.engagement-item:hover {
    background-color: #f1f5f9;
    border-color: #94a3b8;
}
.engagement-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.engagement-index {
    font-weight: 700;
    color: var(--secondary-color);
}
.engagement-title {
    font-weight: 600;
    color: var(--primary-color);
}
.engagement-actions {
    display: flex;
    gap: 0.25rem;
}

/* Responsive Grid span styling */
.admin-full-width {
    grid-column: 1;
}
@media (min-width: 768px) {
    .admin-full-width {
        grid-column: span 2;
    }
}

/* Global scroll prevention and layout overrides */
html, body {
    overflow-x: hidden;
    width: 100%;
}
.container {
    overflow-x: hidden;
}

/* Header Hamburger toggle button style */
.btn-menu-toggle {
    display: none;
}

/* Menu Backdrop styling */
.menu-backdrop {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.4);
    z-index: 1050;
    backdrop-filter: blur(2px);
    transition: opacity 0.2s ease;
}

/* Menu header inside dynamic vertical drawer */
.menu-header {
    display: none;
}

/* Kiosk layout styling */
.kiosk-card {
    max-width: 600px;
    margin: 0 auto 2rem auto;
    border-left: 5px solid var(--accent-color);
}

/* Order control for dashboard view & sidebar */
#leftFormsContainer {
    order: 2;
}
#viewPanel {
    order: 1;
}

@media (min-width: 1200px) {
    #leftFormsContainer {
        order: 1;
    }
    #viewPanel {
        order: 2;
    }
}

/* Media Query: Tablet & Mobile Navigation Menu Drawer */
@media (max-width: 1023px) {
    .btn-menu-toggle {
        display: inline-flex;
        align-items: center;
        background-color: var(--accent-color);
        color: white;
        padding: 0.4rem 0.8rem;
        border-radius: 6px;
        border: none;
        cursor: pointer;
        font-size: 0.85rem;
        font-weight: 600;
        transition: background-color 0.2s;
    }
    .btn-menu-toggle:hover {
        background-color: #1d4ed8;
    }
    .tabs-container {
        position: fixed;
        top: 0;
        right: -300px; /* Hidden offscreen by default */
        width: 280px;
        height: 100%;
        background-color: var(--card-bg);
        box-shadow: -5px 0 25px rgba(0,0,0,0.15);
        z-index: 1100;
        display: flex;
        flex-direction: column;
        padding: 1.5rem;
        margin-bottom: 0;
        border-bottom: none;
        overflow-y: auto;
        overflow-x: hidden;
        transition: right 0.3s ease;
    }
    .tabs-container.open {
        right: 0; /* Slide in */
    }
    .tab-btn {
        flex: none !important;
        text-align: left !important;
        padding: 0.75rem 1rem !important;
        border: 1px solid transparent !important;
        border-radius: 6px !important;
        margin-bottom: 0.5rem;
        width: 100% !important;
    }
    .tab-btn.active {
        color: var(--accent-color) !important;
        background-color: var(--bg-color) !important;
        border: 1px solid var(--border-color) !important;
    }
    .menu-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 1.5rem;
        padding-bottom: 0.75rem;
        border-bottom: 1px solid var(--border-color);
    }
    .menu-header span {
        font-weight: 700;
        font-size: 1.1rem;
        color: var(--primary-color);
    }
    .menu-close-btn {
        background: none;
        border: none;
        font-size: 1.5rem;
        font-weight: bold;
        color: #64748b;
        cursor: pointer;
    }
}

/* Media Query: Header responsiveness */
@media (max-width: 640px) {
    .header-inner {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
        text-align: center;
    }
    .nav-controls {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
        gap: 0.5rem;
    }
}

/* Media Query: Mobile Card size overrides & Stacking Tables */
@media (max-width: 768px) {
    .card {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    /* Responsive Stacked Tables (Zero Horizontal Scroll) */
    .table-responsive {
        background: transparent;
        border: none;
        overflow-x: hidden !important;
        width: 100% !important;
        max-width: 100% !important;
    }
    table, thead, tbody, th, td, tr {
        display: block;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    thead tr {
        position: absolute;
        top: -9999px;
        left: -9999px;
    }
    tr {
        background: white;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        margin-bottom: 1rem;
        padding: 0.5rem;
        box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    }
    td {
        border: none;
        border-bottom: 1px solid #f1f5f9;
        position: relative;
        padding: 0.65rem 0.75rem !important;
        display: flex;
        justify-content: space-between;
        align-items: center;
        text-align: right;
        min-width: 0 !important;
        word-break: break-word !important;
        overflow-wrap: break-word !important;
    }
    td > * {
        min-width: 0 !important;
    }
    td:last-child {
        border-bottom: none;
    }
    td::before {
        content: attr(data-label);
        font-weight: 600;
        color: #64748b;
        text-align: left;
        margin-right: 1rem;
    }
    .action-group {
        justify-content: flex-end;
        width: auto;
    }
    td[data-label="Actions"] {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 0.5rem;
    }
    td[data-label="Actions"]::before {
        margin-bottom: 0.25rem;
        align-self: flex-start;
    }
    td[data-label="Actions"] .action-group {
        justify-content: center !important;
        flex-wrap: wrap !important;
        white-space: normal !important;
        width: 100%;
        gap: 0.35rem;
    }
}
@media (max-width: 576px) {
    .card {
        padding: 0.75rem;
    }
    td {
        padding: 0.5rem 0.5rem !important;
        font-size: 0.8rem;
    }
}

.search-wrapper {
    margin-bottom: 1.25rem;
    position: relative;
    width: 100%;
    max-width: 350px;
}
.search-wrapper input {
    padding-left: 2.25rem !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: 0.75rem center;
    background-size: 1rem 1rem;
}

.status-cell-wrapper {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
@media (max-width: 768px) {
    .status-cell-wrapper {
        align-items: flex-end;
    }
}

#clientPaginationContainer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 0.75rem;
}

@media (max-width: 768px) {
    #clientPaginationContainer {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
        gap: 0.5rem;
    }
}

.header-actions-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .header-actions-group {
        width: 100%;
        justify-content: flex-start;
    }
    #operatorFilterWidget {
        width: 100% !important;
        margin-top: 0.5rem;
        justify-content: flex-start;
    }
}

/* Two-column layout for expanded Client modal details */
.client-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

@media (max-width: 600px) {
    .client-form-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
}

/* Width modifier for corporate client details view */
.modal-surface-wide {
    max-width: 800px !important;
}

/* Two-column layout for read-only Client Details */
.client-details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem 1.5rem;
}

@media (max-width: 600px) {
    .client-details-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
}

.details-group {
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 0.5rem;
}

.details-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.details-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-color);
    word-break: break-word;
}