/* ========================================
   Common CSS - Shared Styles Across All Pages
   ======================================== */

/* CSS Variables / Root */
:root {
    --primary-color: #007171;
    --primary-light: #a7d5c2;
    --primary-lighter: #dcede1;
    --primary-dark: #005555;
    --secondary-color: #3aa7ea;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    --dark-bg: #1f2937;
    --light-bg: #f9fafb;
    --card-bg: #ffffff;
    --text-primary: #242424;
    --text-secondary: #8b8b8b;
    --text-disabled: #a6a6a6;
    --border-color: #e8e8e8;
    --border-dark: #a6a6a6;
    --focus-color: #3aa7ea;
    --link-hover-bg: #f8f8f8;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --font-size-base: 16px;
    --font-size-header: 18px;
    --border-radius-sm: 4px;
    --border-radius-md: 10px;
    --border-radius-lg: 12px;
}

/* Dark Mode Variables */
body.dark-mode {
    --primary-color: #00a3a3;
    --primary-light: #5dbdbd;
    --primary-lighter: #1f3a3a;
    --primary-dark: #008080;
    --secondary-color: #5cc3f5;
    --success-color: #34d399;
    --warning-color: #fbbf24;
    --danger-color: #f87171;
    --info-color: #60a5fa;
    --dark-bg: #111827;
    --light-bg: #1f2937;
    --card-bg: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-disabled: #9ca3af;
    --border-color: #374151;
    --border-dark: #4b5563;
    --focus-color: #5cc3f5;
    --link-hover-bg: #374151;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
}

/* Theme Toggle Button Styles */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0;
}

.theme-toggle:hover {
    background: var(--link-hover-bg);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

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

/* Prevent horizontal overflow */
html,
body {
    overflow-x: hidden;
    width: 100%;
}

/* Body */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--light-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Typography */
h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
}

h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.875rem;
}

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

.breadcrumb a:hover {
    text-decoration: underline;
}

/* Form Styles */
.form-input {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    transition: all 0.2s ease;
    background-color: var(--card-bg);
}

.form-input:focus {
    outline: none;
    border-color: var(--focus-color);
    box-shadow: 0 0 0 1px var(--focus-color);
}

textarea.form-input {
    resize: vertical;
    min-height: 120px;
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s;
    background: var(--card-bg);
    color: var(--text-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--focus-color);
    box-shadow: 0 0 0 1px var(--focus-color);
}

.form-row {
    display: flex;
    flex-direction: column;
}

.form-row.full-width {
    grid-column: 1 / -1;
}

.form-row label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-section {
    background: var(--card-bg);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.form-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    font-size: 1rem;
    transition: all 0.2s ease;
    background-color: var(--card-bg);
}

input:focus {
    outline: none;
    border-color: var(--focus-color);
    box-shadow: 0 0 0 1px var(--focus-color);
}

input[type="text"],
select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s;
    background: var(--card-bg);
    color: var(--text-primary);
}

input[type="text"]:focus,
select:focus {
    outline: none;
    border-color: var(--focus-color);
    box-shadow: 0 0 0 1px var(--focus-color);
}

select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 0.875rem;
    min-width: 120px;
    cursor: pointer;
    transition: all 0.2s ease;
}

select:focus {
    outline: none;
    border-color: var(--focus-color);
    box-shadow: 0 0 0 1px var(--focus-color);
}

select:hover {
    border-color: var(--text-secondary);
}

select.form-control {
    appearance: none;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="8" viewBox="0 0 12 8"><path fill="%236b7280" d="M6 8L0 0h12z"/></svg>');
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

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

.input-group .form-control {
    flex: 1;
}

.input-suffix {
    font-weight: 500;
    color: var(--text-secondary);
}

/* Button Styles */
button {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

button:active {
    transform: translateY(0);
}

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    border: 1px solid transparent;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
    line-height: 1.5;
    outline: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: white;
    text-decoration: none;
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--light-bg);
    color: var(--text-primary);
    border-color: var(--border-dark);
    text-decoration: none;
}

.btn-danger {
    background: var(--card-bg);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.btn-danger:hover {
    background: var(--danger-color);
    color: white;
    border-color: var(--danger-color);
    text-decoration: none;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

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

.btn-edit {
    background: var(--warning-color);
    color: white;
}

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

/* Alert Styles */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
    border-color: rgba(59, 130, 246, 0.2);
}

.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    padding: 1rem;
    border-radius: 0.75rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(239, 68, 68, 0.2);
    font-size: 0.875rem;
    display: none;
}

/* Card Styles */
.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    max-width: 100%;
    box-sizing: border-box;
}

.card-header {
    background: linear-gradient(135deg, var(--light-bg) 0%, white 100%);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.card-content {
    padding: 1.5rem;
}

.form-card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.form-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--light-bg);
}

.form-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-content {
    padding: 2rem;
}

.database-card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    margin-bottom: 2rem;
}

.dkim-card {
    background: var(--card-bg);
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 2rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
}

th {
    background-color: var(--light-bg);
    padding: 1rem 1.5rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

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

tr:hover {
    background-color: var(--light-bg);
}

tbody tr {
    transition: all 0.2s ease;
}

tbody tr:hover {
    background: var(--light-bg);
}

tbody tr:nth-child(even) {
    background: rgba(248, 250, 252, 0.5);
}

tbody tr:nth-child(even):hover {
    background: var(--light-bg);
}

.table-container {
    background: var(--card-bg);
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 3rem;
    border: 1px solid var(--border-color);
}

.table-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--light-bg);
}

.table-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.table-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.table-responsive {
    overflow-x: auto;
    border-radius: 8px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin: 0;
}

.table th {
    background: var(--light-bg);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    font-size: 0.875rem;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: top;
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    text-align: left;
    padding: 0.75rem 1rem;
    background: var(--light-bg);
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table tr:hover {
    background: var(--light-bg);
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.status-pending {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

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

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

.status-sending {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
}

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

.status-unverified {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

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

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

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

.status-unsubscribed {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

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

.status-complained {
    background-color: rgba(168, 85, 247, 0.1);
    color: #7c3aed;
}

.domain-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: 0.5rem;
}

/* Action Buttons & Bars */
.action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.action-btn {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
}

.action-btn:hover {
    transform: translateY(-1px);
}

.action-btns {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

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

.btn-edit:hover {
    background: #2563eb;
}

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

.btn-users:hover {
    background: #7c3aed;
}

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

.btn-view:hover {
    background: #4b5563;
}

.edit-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.edit-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--primary-dark), #3730a3);
}

.edit-btn:active {
    transform: translateY(0);
}

/* Section Headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.section {
    background: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 2rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.section-content {
    padding: 1.5rem;
}

/* Modal Components */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal[style*="display: flex"],
.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow: auto;
    box-shadow: var(--shadow-lg);
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.modal[style*="display: flex"] .modal-content,
.modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--light-bg);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-body p {
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: 1.6;
}

.modal-body p:last-child {
    margin-bottom: 0;
}

.modal-body strong {
    color: var(--primary-color);
    font-weight: 600;
}

.modal-body .warning-text {
    color: var(--danger-color);
    font-weight: 500;
    font-size: 0.875rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--light-bg);
}

/* Modal Responsive Design */
@media (max-width: 640px) {
    .modal-content {
        width: 95%;
        max-width: none;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1rem;
    }

    .modal-footer {
        flex-direction: column-reverse;
    }

    .modal-footer .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .modal-header h3 {
        font-size: 1.125rem;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 0.875rem;
    }
}

/* Pagination */
.pagination-container {
    padding: 1.5rem;
    background: var(--light-bg);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.pagination-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 70px;
}

.pagination-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--light-bg);
}

.page-info {
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* Loading & Empty States */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 4rem;
    color: var(--text-secondary);
}

.loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
    margin-left: 0.5rem;
}

.loading-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
    margin-right: 0.5rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ========================================
   Empty State Components (Pattern 4)
   MANDATORY for ALL tables/lists with no data
   ======================================== */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.empty-state-icon {
    font-size: 3rem;
    line-height: 1;
    opacity: 0.6;
}

.empty-state .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-message h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.empty-message p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
    max-width: 400px;
    line-height: 1.5;
}

.empty-state-text {
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

/* Animations */
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Utility Classes */
.conditional-field {
    display: none;
    margin-top: 1rem;
}

.conditional-field.show {
    display: block;
}

.actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

/* Code Display */
.code-display {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .action-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    th, td {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .form-section {
        padding: 1.5rem;
    }
    
    .card-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .table-controls {
        justify-content: space-between;
    }
    
    .pagination-container {
        flex-direction: column;
        text-align: center;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .verify-content {
        grid-template-columns: 1fr;
    }
    
    .action-btns {
        flex-direction: column;
    }
    
    .form-card {
        padding: 1.5rem;
    }
    
    .form-actions {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn {
        justify-content: center;
    }
    
    .form-content {
        padding: 1.5rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .card-content {
        padding: 1rem;
    }
    
    .section-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .table th,
    .table td {
        padding: 0.75rem 0.5rem;
        font-size: 0.875rem;
    }
    
    table {
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 1.75rem;
    }
    
    .form-group {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
    
    select {
        min-width: auto;
    }
    
    .login-container {
        padding: 2rem;
        border-radius: 1.5rem;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    .brand-logo {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}

/* Form help text */
.form-help {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    line-height: 1.4;
}

/* ========================================
   Footer
   ======================================== */
.app-footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: auto;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-copyright {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-copyright p {
    margin: 0;
}

/* ========================================
   Toggle Switch Component
   ======================================== */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--border-color);
    border-radius: 24px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 2px;
    background: white;
    border-radius: 50%;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch input:checked + .toggle-slider {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-color: var(--primary-color);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(22px);
}

.toggle-switch input:focus + .toggle-slider {
    box-shadow: 0 0 0 3px rgba(0, 113, 113, 0.15);
}

.toggle-switch:hover .toggle-slider {
    box-shadow: 0 0 8px rgba(0, 113, 113, 0.25);
}

/* Dark mode adjustments */
body.dark-mode .toggle-slider:before {
    background: #f9fafb;
}

/* ========================================
   Feature Toggle Card Component
   ======================================== */
.feature-toggle-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all 0.2s ease;
    margin: 1rem 0;
}

.feature-toggle-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 113, 113, 0.1);
}

.feature-toggle-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem;
    background: var(--light-bg);
    border-bottom: 1px solid var(--border-color);
}

.feature-toggle-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.feature-toggle-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 113, 113, 0.25);
    flex-shrink: 0;
}

.feature-toggle-content h4 {
    margin: 0 0 0.25rem 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.feature-toggle-content p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.feature-toggle-control {
    flex-shrink: 0;
}

/* Responsive adjustments for feature toggle card */
@media (max-width: 640px) {
    .feature-toggle-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        padding: 1rem;
    }

    .feature-toggle-info {
        width: 100%;
    }

    .feature-toggle-control {
        width: 100%;
        display: flex;
        justify-content: flex-end;
    }
}

@media (max-width: 480px) {
    .feature-toggle-header {
        padding: 0.875rem;
    }

    .feature-toggle-icon {
        width: 36px;
        height: 36px;
    }

    .feature-toggle-content h4 {
        font-size: 0.9375rem;
    }

    .feature-toggle-content p {
        font-size: 0.8125rem;
    }
}

/* ========================================
   Notification Component
   ======================================== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    max-width: 400px;
    padding: 1rem 1.25rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: slideInRight 0.3s ease-out;
    transition: opacity 0.3s ease;
    font-size: 0.9375rem;
    font-weight: 500;
}

.notification-success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    border: 1px solid #10b981;
    color: #065f46;
}

.notification-error {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border: 1px solid #ef4444;
    color: #991b1b;
}

.notification-warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 1px solid #f59e0b;
    color: #92400e;
}

.notification-info {
    background: linear-gradient(135deg, #dbeafe 0%, #93c5fd 100%);
    border: 1px solid #3b82f6;
    color: #1e40af;
}

.notification-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.notification-message {
    flex: 1;
    line-height: 1.5;
}

.notification-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
    padding: 0;
    line-height: 1;
    flex-shrink: 0;
    transition: opacity 0.2s ease;
}

.notification-close:hover {
    opacity: 1;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Dark mode adjustments */
body.dark-mode .notification-success {
    background: linear-gradient(135deg, #064e3b 0%, #065f46 100%);
    border-color: #10b981;
    color: #d1fae5;
}

body.dark-mode .notification-error {
    background: linear-gradient(135deg, #7f1d1d 0%, #991b1b 100%);
    border-color: #ef4444;
    color: #fee2e2;
}

body.dark-mode .notification-warning {
    background: linear-gradient(135deg, #78350f 0%, #92400e 100%);
    border-color: #f59e0b;
    color: #fef3c7;
}

body.dark-mode .notification-info {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
    border-color: #3b82f6;
    color: #dbeafe;
}

/* Responsive adjustments for notifications */
@media (max-width: 640px) {
    .notification {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
}

/* ========================================
   Footer
   ======================================== */
.footer-nav {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Footer responsive */
@media (max-width: 768px) {
    .app-footer {
        padding: 1.5rem 0;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 0 1rem;
        gap: 1rem;
    }

    .footer-nav {
        gap: 1rem;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .app-footer {
        padding: 1rem 0;
    }

    .footer-content {
        padding: 0 0.75rem;
    }

    .footer-nav {
        flex-direction: column;
        gap: 0.5rem;
    }

    .footer-copyright,
    .footer-link {
        font-size: 0.8125rem;
    }
}