:root {
    /* Light Theme Variables */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border-color: #dee2e6;
    --border-light: #f0f0f0;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    --input-bg: #ffffff;
    --input-border: #ced4da;
    --input-focus: #80bdff;
    --card-bg: #ffffff;
    --header-bg: #2c3e50;
    --header-text: #ffffff;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
    --primary: #007bff;
}

[data-theme="dark"] {
    /* Dark Theme Variables */
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --text-primary: #e0e0e0;
    --text-secondary: #888888;
    --text-muted: #666666;
    --border-color: #404040;
    --border-light: #333333;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.4);
    --input-bg: #2d2d2d;
    --input-border: #555555;
    --input-focus: #4dabf7;
    --card-bg: #2d2d2d;
    --header-bg: #1e2a3a;
    --header-text: #ffffff;
    --success: #51cf66;
    --danger: #ff6b6b;
    --warning: #ffd43b;
    --info: #74c0fc;
    --primary: #339af0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Link Styles */
a {
    color: var(--secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary);
    text-decoration: underline;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Dark Mode Toggle */
.dark-mode-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: transparent;
    border: none;
    border-radius: 30px;
    padding: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dark-mode-toggle:hover {
    box-shadow: 0 4px 20px var(--shadow-hover);
    transform: translateY(-2px);
}

.dark-mode-toggle .toggle-switch {
    width: 50px;
    height: 24px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    position: relative;
    transition: all 0.3s ease;
    overflow: hidden;
}

.dark-mode-toggle .toggle-slider {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--text-primary);
    position: absolute;
    top: 2px;
    left: 2px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
}

.dark-mode-toggle .toggle-icons {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    position: relative;
}

.dark-mode-toggle .sun-icon,
.dark-mode-toggle .moon-icon {
    position: absolute;
    transition: all 0.3s ease;
    color: var(--bg-primary);
}

.dark-mode-toggle .sun-icon {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.dark-mode-toggle .moon-icon {
    opacity: 0;
    transform: scale(0.8) rotate(180deg);
}

[data-theme="dark"] .dark-mode-toggle .toggle-switch {
    background: var(--primary);
}

[data-theme="dark"] .dark-mode-toggle .toggle-slider {
    transform: translateX(26px);
    background: var(--bg-primary);
}

[data-theme="dark"] .dark-mode-toggle .sun-icon {
    opacity: 0;
    transform: scale(0.8) rotate(180deg);
    color: var(--text-primary);
}

[data-theme="dark"] .dark-mode-toggle .moon-icon {
    opacity: 1;
    transform: scale(1) rotate(0deg);
    color: var(--text-primary);
}


header {
    background-color: var(--card-bg);
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow);
    transition: all 0.3s ease;
}

.header-content {
    margin-bottom: 15px;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-logo .logo {
    max-height: 50px;
    max-width: 200px;
    height: auto;
    width: auto;
    object-fit: contain;
}

.header-logo h1 {
    color: var(--text-primary);
    margin: 0;
    flex: 1;
}

header h1 {
    color: var(--text-primary);
    margin-bottom: 15px;
}

nav {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    align-items: center;
}

nav a {
    color: var(--primary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

nav a:hover,
nav a.active {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    text-decoration: none;
}

main {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow);
    transition: all 0.3s ease;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.card {
    background-color: var(--bg-secondary);
    padding: 25px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    min-height: 200px;
}

.card .btn {
    margin-top: auto;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-hover);
}

.card h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
}

.card p {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    font-weight: 500;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px var(--shadow-hover);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: #004085;
    color: white;
}

[data-theme="dark"] .btn-primary:hover {
    background-color: #74c0fc;
    color: white;
}

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

.btn-secondary:hover {
    background-color: #495057;
    color: white;
}

[data-theme="dark"] .btn-secondary:hover {
    background-color: #adb5bd;
    color: white;
}

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

.btn-danger:hover {
    background-color: #c82333;
    color: white;
}

[data-theme="dark"] .btn-danger:hover {
    background-color: #ff8787;
    color: white;
}

.btn-warning {
    background-color: var(--warning);
    color: #000;
}

.btn-warning:hover {
    background-color: #e0a800;
    color: #000;
}

[data-theme="dark"] .btn-warning:hover {
    background-color: #fff056;
    color: #000;
}

.btn-info {
    background-color: var(--info);
}

.btn-info:hover {
    background-color: #138496;
    color: white;
}

[data-theme="dark"] .btn-info:hover {
    background-color: #91d5ff;
    color: white;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 0.9em;
}

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

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-box {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 8px 32px var(--shadow);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.login-box h1 {
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 5px;
    font-size: 1.5em;
}

.login-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 5px;
}

.login-logo {
    max-height: 40px;
    max-width: 200px;
    height: auto;
    width: auto;
    object-fit: contain;
}

/* Show logo always, hide only if it's transparent fallback */
.login-logo {
    display: block;
}

/* Hide header logos if they are fallback images */
.header-logo .logo[src="logo.php"],
.header-logo .logo[src="../logo.php"] {
    display: none;
}

/* Show logo if it has content */
.login-logo:not([src=""]) {
    display: block;
}

.login-box h2 {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 20px;
    font-size: 1em;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    margin-bottom: 10px;
}

.checkbox-label input[type="checkbox"] {
    margin-right: 8px;
}

.checkbox-label span {
    font-size: 13px;
    color: var(--text-secondary);
}

.login-links {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-light);
}

.login-links p {
    margin: 8px 0;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 2px solid var(--input-border);
    border-radius: 6px;
    font-size: 15px;
    background-color: var(--input-bg);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--input-focus);
}

.alert {
    padding: 12px;
    margin-bottom: 15px;
    border-radius: 4px;
    font-size: 14px;
}

.alert-error {
    background-color: var(--danger);
    color: white;
    border: 1px solid var(--danger);
    opacity: 0.9;
}

.alert-success {
    background-color: var(--success);
    color: white;
    border: 1px solid var(--success);
    opacity: 0.9;
}

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

.form-section {
    margin-bottom: 30px;
    padding: 20px;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.form-section h3 {
    margin-bottom: 15px;
    color: var(--text-primary);
}

.specification-row,
.email-parameter-row,
.email-address-row,
.cms-access-row,
.feature-row {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    align-items: center;
}

.specification-row input,
.email-parameter-row input,
.email-address-row input,
.cms-access-row input,
.feature-row input {
    flex: 1;
    height: 42px;
    padding: 10px;
    border: 2px solid var(--input-border);
    border-radius: 6px;
    font-size: 16px;
    box-sizing: border-box;
    background-color: var(--input-bg);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.specification-row input:focus,
.email-parameter-row input:focus,
.email-address-row input:focus,
.cms-access-row input:focus,
.feature-row input:focus {
    outline: none;
    border-color: #3498db;
}

.remove-row {
    flex-shrink: 0;
}

#specifications-container,
#email-parameters-container,
#email-addresses-container,
#cms-access-container,
#features-container {
    margin-bottom: 15px;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 30px;
}

.form-text {
    color: #666;
    font-size: 0.9em;
    margin-top: 5px;
    display: block;
}

.select2-container .select2-selection--single {
    height: 40px !important;
    border: 1px solid var(--input-border) !important;
    border-radius: 4px !important;
    background-color: var(--input-bg) !important;
    transition: all 0.3s ease !important;
}

.select2-container .select2-selection--single .select2-selection__rendered {
    line-height: 38px !important;
    padding-left: 10px !important;
    color: var(--text-primary) !important;
}

.select2-container .select2-selection--single .select2-selection__arrow {
    height: 38px !important;
}

.select2-container .select2-selection--single .select2-selection__arrow b {
    border-color: var(--text-secondary) transparent transparent transparent !important;
}

.select2-dropdown {
    border-radius: 4px !important;
    border: 1px solid var(--input-border) !important;
    background-color: var(--card-bg) !important;
}

.select2-container--default .select2-selection--single:focus {
    border-color: var(--primary) !important;
}

.select2-container--default.select2-container--focus .select2-selection--single {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px var(--input-focus) !important;
}

/* Select2 Dropdown Options */
.select2-results {
    background-color: var(--card-bg) !important;
}

.select2-results__option {
    color: var(--text-primary) !important;
    background-color: var(--card-bg) !important;
    padding: 8px 12px !important;
    transition: all 0.2s ease !important;
}

.select2-results__option--highlighted[aria-selected] {
    background-color: var(--primary) !important;
    color: white !important;
}

.select2-results__option[aria-selected=true] {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

.select2-search--dropdown {
    background-color: var(--card-bg) !important;
    padding: 8px !important;
}

.select2-search--dropdown .select2-search__field {
    background-color: var(--input-bg) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--input-border) !important;
    border-radius: 4px !important;
    padding: 6px 10px !important;
}

.select2-container--default .select2-selection--single .select2-selection__placeholder {
    color: var(--text-muted) !important;
}

/* Dark Mode Specific Select2 */
[data-theme="dark"] .select2-container .select2-selection--single .select2-selection__arrow b {
    border-color: var(--text-secondary) transparent transparent transparent !important;
}

[data-theme="dark"] .select2-results__option:hover {
    background-color: var(--bg-tertiary) !important;
}

.drag-handle {
    cursor: grab;
    cursor: -webkit-grab;
    font-size: 18px;
    color: #999;
    padding: 0 8px;
    user-select: none;
    display: inline-flex;
    align-items: center;
    height: 40px;
    font-weight: bold;
    line-height: 1;
}

.drag-handle:active {
    cursor: grabbing;
    cursor: -webkit-grabbing;
}

.drag-handle:hover {
    color: #666;
}

.sortable-ghost {
    opacity: 0.4;
}

.sortable-chosen {
    background-color: #f8f9fa;
}

.sortable-drag {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.title-input {
    font-weight: bold !important;
    background-color: #f8f9fa !important;
    border-color: #6c757d !important;
}

.title-spacer {
    flex: 1;
    min-width: 0;
}

.title-row {
    background-color: #f8f9fa;
    border-radius: 4px;
    padding: 2px 0;
}

.btn-group {
    display: flex;
    gap: 5px;
    margin-top: 10px;
}

/* History Table Styles */
.history-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px var(--shadow);
    transition: all 0.3s ease;
}

.history-table th,
.history-table td {
    text-align: left;
    padding: 15px;
    border-bottom: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.history-table th {
    background-color: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.85em;
    letter-spacing: 0.5px;
}

.history-table td {
    color: var(--text-primary);
}

.history-table tbody tr:hover {
    background-color: var(--bg-secondary);
}

.history-table tr:last-child td {
    border-bottom: none;
}

/* Dark Mode Specific for History Table */
[data-theme="dark"] .history-table th {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] .history-table tbody tr:hover {
    background-color: var(--bg-tertiary);
}

.action-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.action-buttons .btn {
    padding: 6px 12px;
    font-size: 0.85em;
    white-space: nowrap;
}