:root {
    /* Light Mode (Cyan) */
    --bg-color: #f0fdfa;
    --card-bg: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --primary-color: #06b6d4; /* Cyan */
    --primary-hover: #0891b2;
    --secondary-color: #e2e8f0;
    --secondary-hover: #cbd5e1;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --success-color: #10b981;
    --border-color: #cbd5e1;
    --nav-bg: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] {
    /* Dark Mode (Dark Blue) */
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary-color: #3b82f6; /* Blue */
    --primary-hover: #2563eb;
    --secondary-color: #334155;
    --secondary-hover: #475569;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --success-color: #10b981;
    --border-color: #334155;
    --nav-bg: #1e293b;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.6;
}

a {
    color: var(--primary-color);
    text-decoration: none;
}

/* Navbar */
.navbar {
    background-color: var(--nav-bg);
    box-shadow: var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--primary-color);
}

.user-greeting {
    font-weight: 500;
    color: var(--text-secondary);
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.theme-toggle:hover {
    background-color: var(--secondary-color);
}

/* Containers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.main-content {
    padding: 2rem;
    margin-top: 2rem;
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.text-center {
    text-align: center;
}

.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.my-4 { margin-top: 1.5rem; margin-bottom: 1.5rem; }
.w-100 { width: 100%; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    text-align: center;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}
.btn-primary:hover { background-color: var(--primary-hover); color: white;}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--text-primary);
}
.btn-secondary:hover { background-color: var(--secondary-hover); }

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}
.btn-danger:hover { background-color: var(--danger-hover); }

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

/* Login Wrapper */
.login-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.login-card {
    width: 100%;
    max-width: 400px;
}

/* Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.ticket-table, .simple-table {
    width: 100%;
    border-collapse: collapse;
}

.ticket-table th, .ticket-table td,
.simple-table th, .simple-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.ticket-table th, .simple-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background-color: var(--bg-color);
}

.ticket-table tr:hover {
    background-color: var(--bg-color);
}

/* Status Badges */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    display: inline-block;
}

.status-open {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.status-in-progress {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
}

.status-closed {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

/* Badge for Roles */
.badge {
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: bold;
}
.badge-it { background: rgba(59, 130, 246, 0.2); color: var(--primary-color); }
.badge-staff { background: rgba(100, 116, 139, 0.2); color: var(--text-secondary); }

/* Ticket Details */
.ticket-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.ticket-title-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.ticket-title-section h2 { margin: 0; }

.ticket-meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.ticket-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .ticket-layout { grid-template-columns: 1fr; }
}

.reply-card {
    padding: 1.5rem;
    margin-bottom: 1rem;
    background-color: var(--bg-color);
}

.reply-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.text-muted { color: var(--text-secondary); }

/* Settings Grid */
.settings-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
}

@media (max-width: 900px) {
    .settings-grid { grid-template-columns: 1fr; }
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-weight: 500;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 1rem;
    border-bottom: 2px solid var(--border-color);
}
.tab-btn {
    background: none;
    border: none;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}
.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Notifications */
.notification-wrapper {
    position: relative;
    display: inline-block;
}
.icon-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background-color 0.2s;
    color: var(--text-primary);
}
.icon-btn:hover {
    background-color: var(--secondary-color);
}
.notif-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background-color: var(--danger-color);
    color: white;
    font-size: 0.7rem;
    font-weight: bold;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.notif-dropdown {
    position: absolute;
    top: 50px;
    right: 0;
    width: 300px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    z-index: 1000;
    max-height: 400px;
    overflow-y: auto;
}
.notif-header {
    padding: 1rem;
    font-weight: bold;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-color);
}
.notif-item {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: start;
    font-size: 0.9rem;
}
.notif-item a {
    color: var(--text-primary);
    text-decoration: none;
}
.notif-item a:hover {
    color: var(--primary-color);
}
.mark-read-btn {
    background: none;
    border: none;
    color: var(--success-color);
    cursor: pointer;
    font-weight: bold;
    padding: 0 0.5rem;
}
.mark-read-btn:hover {
    transform: scale(1.2);
}
.notif-empty {
    padding: 1rem;
    text-align: center;
    color: var(--text-secondary);
}
.hidden { display: none !important; }
.d-flex { display: flex; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.ml-2 { margin-left: 0.5rem; }

/* Attachments */
.attachment-list {
    list-style: none;
    padding-left: 0;
}
.attachment-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}
.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}
.text-danger { color: var(--danger-color); }
.text-secondary { color: var(--text-secondary); }

.settings-left {
    display: flex;
    flex-direction: column;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
}
.modal-content {
    background-color: var(--card-bg);
    margin: 10% auto;
    padding: 2rem;
    border: 1px solid var(--border-color);
    width: 90%;
    max-width: 500px;
    border-radius: 12px;
    position: relative;
    box-shadow: var(--shadow);
}
.close-btn {
    color: var(--text-secondary);
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}
.close-btn:hover {
    color: var(--text-primary);
}

/* RTL Support */
[dir="rtl"] {
    text-align: right;
}
[dir="rtl"] .nav-content, [dir="rtl"] .dashboard-header, [dir="rtl"] .ticket-title-section, [dir="rtl"] .reply-header {
    flex-direction: row-reverse;
}
[dir="rtl"] .nav-links {
    flex-direction: row-reverse;
}
[dir="rtl"] .ticket-layout, [dir="rtl"] .settings-grid {
    direction: rtl;
}
[dir="rtl"] .notif-dropdown {
    right: auto;
    left: 0;
    text-align: right;
}
[dir="rtl"] .close-btn {
    right: auto;
    left: 20px;
}
[dir="rtl"] .notif-badge {
    right: auto;
    left: 2px;
}
[dir="rtl"] .table-responsive {
    direction: rtl;
}
[dir="rtl"] .ticket-table th, [dir="rtl"] .ticket-table td,
[dir="rtl"] .simple-table th, [dir="rtl"] .simple-table td {
    text-align: right;
}
[dir="rtl"] .ml-2 { margin-left: 0; margin-right: 0.5rem; }