:root {
    /* Dark Theme (Default) */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --border-color: #334155;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Layout */
    --sidebar-width: 260px;
    --header-height: 64px;
    --border-radius: 12px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

[data-theme="light"] {
    --bg-primary: #f1f5f9;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.06);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Layout Container */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 10;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.logo {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.logo-icon {
    font-size: 1.5rem;
    margin-right: var(--spacing-sm);
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.nav-links {
    padding: var(--spacing-lg) var(--spacing-md);
    flex-grow: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-md);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    cursor: pointer;
    margin-bottom: var(--spacing-xs);
    transition: all 0.2s ease;
    font-weight: 500;
}

.nav-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-color);
}

.nav-item .icon {
    margin-right: var(--spacing-md);
    font-size: 1.1rem;
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.status-indicator {
    display: flex;
    align-items: center;
    font-size: 0.875rem;
    color: var(--success-color);
    font-weight: 500;
}

.dot {
    width: 8px;
    height: 8px;
    background-color: var(--success-color);
    border-radius: 50%;
    margin-right: var(--spacing-sm);
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.4);
}

/* Main Content */
.main-content {
    flex-grow: 1;
    margin-left: var(--sidebar-width);
    padding: 0;
    min-height: 100vh;
    transition: background-color 0.3s ease;
}

.top-bar {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    background-color: var(--bg-primary);
    /* Blend with body */
    position: sticky;
    top: 0;
    z-index: 5;
    border-bottom: 1px solid var(--border-color);
    /* Optional: distinct header */
    backdrop-filter: blur(8px);
    background: rgba(var(--bg-primary), 0.9);
    /* Dynamic bg */
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="light"] .top-bar {
    background: rgba(255, 255, 255, 0.9);
}

#page-title {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.2rem;
    /* Increased padding */
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    font-size: 0.875rem;
    gap: var(--spacing-sm);
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--border-color);
    /* Darker on hover */
}

.btn-icon {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.5rem;
}

.btn-icon:hover {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

.btn-text {
    background: transparent;
    color: var(--accent-color);
    padding: 0;
}

.btn-text:hover {
    text-decoration: underline;
}

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

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

.btn-danger-outline:hover {
    background: rgba(239, 68, 68, 0.1);
}

.btn-warning-outline {
    background: transparent;
    border: 1px solid var(--warning-color);
    color: var(--warning-color);
}

.btn-warning-outline:hover {
    background: rgba(245, 158, 11, 0.1);
}

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
}

/* Views & Sections */
.view {
    display: none;
    padding: var(--spacing-xl);
    max-width: 1200px;
    /* Constrain width for better readability */
    margin: 0 auto;
    animation: fadeIn 0.3s ease-out;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
}

.stat-card h3 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

.stat-card .value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-card .value-small {
    font-size: 1.25rem;
    font-weight: 600;
}

/* Cards */
.card {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
    transition: background-color 0.3s ease, border-color 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.card-header p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

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

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th,
td {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

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

tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

[data-theme="light"] tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.02);
}

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

.status-completed {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
}

.status-running {
    background: rgba(59, 130, 246, 0.2);
    color: #3b82f6;
}

.status-failed {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.status-pending {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
}

/* Forms */
.form-container {
    max-width: 900px;
    margin: 0 auto;
}

.crawl-form {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.form-section {
    padding: var(--spacing-lg) 0;
}

.form-section-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.form-section-label .section-icon {
    font-size: 1.4rem;
    line-height: 1;
    margin-top: 2px;
}

.form-section-label h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.form-section-label p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin: 0;
}

.form-divider {
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-color), transparent);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

input[type="text"],
input[type="url"],
input[type="number"],
select {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: border 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

/* Input with unit suffix (ms, USD) */
.input-with-unit {
    position: relative;
}

.input-with-unit input {
    padding-right: 3.5rem;
}

.input-unit {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    pointer-events: none;
}

small {
    display: block;
    margin-top: 0.4rem;
    color: var(--text-secondary);
    font-size: 0.78rem;
    opacity: 0.75;
}

.required {
    color: var(--danger-color);
    margin-left: 0.25rem;
}

/* Checkboxes */
.checkbox-group {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    background-color: transparent;
    padding: 0;
    border: none;
}

.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    position: relative;
    padding: 0.85rem 1rem 0.85rem 3.2rem;
    font-weight: 500;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.checkbox-container:hover {
    border-color: var(--accent-color);
    background-color: rgba(59, 130, 246, 0.03);
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkbox-label {
    display: flex;
    flex-direction: column;
}

.checkbox-label span {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: none;
    letter-spacing: 0;
}

.checkbox-label small {
    margin-top: 1px;
    font-size: 0.75rem;
}

.checkmark {
    position: absolute;
    top: 50%;
    left: 0.85rem;
    transform: translateY(-50%);
    height: 20px;
    width: 20px;
    background-color: var(--bg-secondary);
    border: 1.5px solid var(--border-color);
    border-radius: 5px;
    transition: all 0.2s;
}

.checkbox-container input:checked~.checkmark {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked~.checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 7px;
    top: 3px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

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

.btn-lg {
    padding: 0.75rem 1.8rem;
    font-size: 1rem;
    font-weight: 600;
}

/* Job Details */
.details-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.job-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.job-meta h2 {
    font-size: 1.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 500px;
}

.badge {
    background-color: var(--bg-tertiary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

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

.tab-btn.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s;
}

/* Progress Bar */
.progress-bar-container {
    height: 8px;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin: var(--spacing-sm) 0;
}

.progress-bar {
    height: 100%;
    background-color: var(--accent-color);
    transition: width 0.5s ease;
}

/* Config Grid */
.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

.config-item {
    display: flex;
    flex-direction: column;
}

.config-item .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.config-item .val {
    font-weight: 500;
}

/* Results Viewer */
.results-viewer {
    max-height: 500px;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.json-item {
    background-color: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    border-left: 3px solid var(--accent-color);
}

.json-item h4 {
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.json-item .url {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.log-viewer {
    display: block;
    background-color: #000;
    color: #0f0;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    max-height: 400px;
    overflow-y: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.875rem;
    white-space: pre-wrap;
}

/* Notification */
#notification-area {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--accent-color);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 4px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    min-width: 300px;
    animation: slideIn 0.3s ease-out;
}

.toast.success {
    border-color: var(--success-color);
}

.toast.error {
    border-color: var(--danger-color);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #475569;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: var(--bg-secondary);
    margin: 5% auto;
    padding: 20px;
    border: 1px solid var(--border-color);
    width: 90%;
    max-width: 1000px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: relative;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.close-modal {
    color: var(--text-secondary);
    float: right;
    font-size: 28px;
    font-weight: bold;
    position: absolute;
    top: 10px;
    right: 20px;
    cursor: pointer;
    z-index: 10;
}

.close-modal:hover,
.close-modal:focus {
    color: var(--text-primary);
    text-decoration: none;
    cursor: pointer;
}

#modal-body {
    flex-grow: 1;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    background: var(--bg-primary);
    border-radius: 8px;
    margin-top: 30px;
}

#modal-body img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
}

#modal-body iframe {
    width: 100%;
    height: 70vh;
    border: none;
}

.modal-footer {
    padding-top: var(--spacing-md);
    text-align: right;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-md);
}

/* Campaigns */
.campaigns-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: var(--spacing-lg);
}

.optional {
    font-weight: 400;
    font-size: 0.8em;
    color: var(--text-secondary);
}

textarea {
    width: 100%;
    padding: 0.65rem 1rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: 'Inter', monospace;
    resize: vertical;
    transition: border 0.2s ease, box-shadow 0.2s ease;
}

textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* Export buttons group */
.export-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.export-actions .btn {
    white-space: nowrap;
}

/* Schedule toggle switch */
.schedule-toggle-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: 500;
    user-select: none;
}

.schedule-toggle-input {
    display: none;
}

.schedule-toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    transition: background 0.25s ease;
    flex-shrink: 0;
}

.schedule-toggle-switch::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    background: var(--text-primary);
    border-radius: 50%;
    transition: transform 0.25s ease;
}

.schedule-toggle-input:checked+.schedule-toggle-switch {
    background: var(--accent-color);
}

.schedule-toggle-input:checked+.schedule-toggle-switch::after {
    transform: translateX(20px);
}

/* Schedule datetime picker */
.schedule-picker input[type="datetime-local"] {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: 'Inter', sans-serif;
    transition: border 0.2s ease, box-shadow 0.2s ease;
}

.schedule-picker input[type="datetime-local"]:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* Scheduled badge */
.status-scheduled {
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
}