/* CSS Variables */
:root {
    /* Light Theme Colors */
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --secondary-color: #059669;
    --secondary-hover: #047857;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --error-color: #ef4444;

    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-overlay: rgba(0, 0, 0, 0.5);

    /* Text Colors */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --text-inverse: #ffffff;

    /* Border Colors */
    --border-primary: #e5e7eb;
    --border-secondary: #d1d5db;
    --border-focus: var(--primary-color);

    /* Shadow Colors */
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;

    /* Animation */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #1f2937;
    --bg-secondary: #111827;
    --bg-tertiary: #374151;
    --bg-overlay: rgba(0, 0, 0, 0.7);

    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    --text-inverse: #111827;

    --border-primary: #374151;
    --border-secondary: #4b5563;

    --primary-light: #312e81;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header */
.app-header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-primary);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-section i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
}

.logo-section h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.version {
    background-color: var(--primary-light);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-primary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-secondary);
}

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

/* Main Navigation */
.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-xs);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xs);
    box-shadow: var(--shadow-sm);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.nav-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.nav-link:hover::before {
    opacity: 0.1;
}

.nav-link.active {
    color: var(--text-inverse);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    box-shadow: var(--shadow-md);
}

.nav-link.active:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.nav-link i {
    font-size: var(--font-size-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-link span {
    font-weight: 500;
    white-space: nowrap;
}

/* Navigation Badge for Active State */
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background-color: var(--success-color);
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--bg-tertiary);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: nowrap;
    min-width: 0;
}

.language-selector {
    margin-right: var(--spacing-sm);
}

.language-select {
    background: none;
    border: 1px solid var(--border-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.language-select:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-secondary);
}

.language-select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Main Layout */
.app-main {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: var(--spacing-xl);
    width: 100%;
}

/* Input Panel */
.input-panel {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    height: fit-content;
    position: sticky;
    top: 100px;
}

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

.panel-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.panel-header i {
    color: var(--primary-color);
}

.keyword-count {
    background-color: var(--primary-light);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

/* Form Styles */
.input-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-group label i {
    color: var(--primary-color);
    font-size: var(--font-size-sm);
}

.form-group small {
    font-weight: 400;
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    margin-left: auto;
}

.keyword-textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-lg);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    resize: vertical;
    min-height: 160px;
    line-height: 1.5;
    transition: all var(--transition-base);
}

.keyword-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.keyword-textarea::placeholder {
    color: var(--text-tertiary);
}

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

.char-count {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.clear-btn {
    background: none;
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.clear-btn:hover {
    background-color: var(--bg-tertiary);
    color: var(--danger-color);
    border-color: var(--danger-color);
}

.country-select {
    padding: var(--spacing-md);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.country-select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.start-query-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--text-inverse);
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.start-query-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.start-query-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.start-query-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.start-query-btn:hover::before {
    left: 100%;
}

/* Quick Actions */
.quick-actions {
    border-top: 1px solid var(--border-primary);
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.action-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.action-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.action-btn {
    background: none;
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

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

/* Results Panel */
.results-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Progress Section */
.progress-section {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--primary-color);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.progress-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.cancel-btn {
    background: none;
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.cancel-btn:hover {
    background-color: var(--danger-color);
    color: var(--text-inverse);
}

.progress-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.progress-bar-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.progress-bar {
    flex: 1;
    height: 8px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    transition: width var(--transition-base);
    border-radius: var(--radius-lg);
}

.progress-text {
    font-weight: 600;
    color: var(--primary-color);
    min-width: 40px;
    text-align: right;
}

.progress-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
}

.stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.stat-value.success {
    color: var(--success-color);
}

.stat-value.error {
    color: var(--danger-color);
}

.current-keyword {
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
    font-size: var(--font-size-sm);
}

.current-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.current-value {
    color: var(--primary-color);
    font-weight: 600;
    margin-left: var(--spacing-sm);
}

/* Summary Section */
.summary-section {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
}

.summary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.summary-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.summary-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.export-btn {
    background: none;
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.summary-card {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border: 1px solid var(--border-primary);
    background-color: var(--bg-secondary);
}

.summary-card.total {
    border-left: 4px solid var(--primary-color);
}

.summary-card.success {
    border-left: 4px solid var(--success-color);
}

.summary-card.failed {
    border-left: 4px solid var(--danger-color);
}

.summary-card.excellent {
    border-left: 4px solid var(--secondary-color);
}

.card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
}

.summary-card.total .card-icon {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.summary-card.success .card-icon {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

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

.summary-card.excellent .card-icon {
    background-color: rgba(5, 150, 105, 0.1);
    color: var(--secondary-color);
}

.card-content {
    flex: 1;
}

.card-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.card-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Table Section */
.table-section {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.table-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.table-controls {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.search-input,
.filter-select,
.sort-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.search-input {
    width: 200px;
}

.search-input:focus,
.filter-select:focus,
.sort-select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

.table-container {
    overflow-x: auto;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-primary);
}

.results-table th {
    background-color: var(--bg-secondary);
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-primary);
    white-space: nowrap;
}

.results-table th.sortable {
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-base);
}

.results-table th.sortable:hover {
    background-color: var(--bg-tertiary);
}

.results-table th.sortable::after {
    content: '⇅';
    margin-left: var(--spacing-xs);
    opacity: 0.3;
}

.results-table th.sort-asc::after {
    content: '↑';
    opacity: 1;
    color: var(--primary-color);
}

.results-table th.sort-desc::after {
    content: '↓';
    opacity: 1;
    color: var(--primary-color);
}

.results-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-primary);
    font-size: var(--font-size-sm);
    white-space: nowrap;
}

.results-table tbody tr {
    transition: all var(--transition-fast);
}

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

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

/* Status Indicators */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

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

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

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

/* KGR Value Styling */
.kgr-value {
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

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

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

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

/* Competition Level */
.competition-low {
    color: var(--success-color);
    font-weight: 600;
}

.competition-medium {
    color: var(--warning-color);
    font-weight: 600;
}

.competition-high {
    color: var(--danger-color);
    font-weight: 600;
}

/* Action Buttons */
.action-buttons-cell {
    display: flex;
    gap: var(--spacing-xs);
}

.btn-action {
    background: none;
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

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

/* Table Footer */
.table-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

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

.page-btn {
    background: none;
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
}

.page-btn:hover:not(:disabled) {
    background-color: var(--bg-tertiary);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-info {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.table-info {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* Empty State */
.empty-state {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-2xl);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.empty-icon {
    font-size: 4rem;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-state p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 400px;
}

.empty-tips {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 300px;
}

.tip {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: left;
}

.tip i {
    color: var(--primary-color);
    width: 16px;
}

/* Hero Banner */
.hero-banner {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--text-inverse);
    padding: var(--spacing-2xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(90deg, #fff, rgba(255,255,255,0.8));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
    opacity: 0.9;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
}

.hero-stats .stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.kgr-formula {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 400px;
}

.formula-item {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-sm);
}

.formula-label {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: #ffd700;
}

.formula-value {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    white-space: nowrap;
}

.formula-operator {
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.formula-target {
    background: rgba(0, 255, 0, 0.2);
    border: 1px solid rgba(0, 255, 0, 0.4);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    margin-top: var(--spacing-lg);
}

.target-label {
    display: block;
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: #00ff00;
    margin-bottom: var(--spacing-xs);
}

.target-desc {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* KGR Info Section */
.kgr-info-section {
    background-color: var(--bg-secondary);
    padding: var(--spacing-2xl) 0;
}

.info-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.info-card {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-primary);
    transition: all var(--transition-base);
}

.info-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

.info-card.featured {
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
    border-left: 4px solid var(--primary-color);
}

.info-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-primary);
}

.info-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.info-header i {
    color: var(--primary-color);
}

.info-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: 500;
}

.info-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.info-text p {
    font-size: var(--font-size-base);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.formula-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.formula-box h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.formula-display {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
}

.formula-part {
    background: var(--bg-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
    font-weight: 500;
}

.formula-operator {
    font-weight: 700;
    color: var(--primary-color);
}

.kgr-scale h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.scale-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.scale-item {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border-left: 4px solid;
    background: var(--bg-secondary);
}

.scale-item.excellent {
    border-left-color: var(--success-color);
    background: rgba(16, 185, 129, 0.05);
}

.scale-item.good {
    border-left-color: var(--warning-color);
    background: rgba(245, 158, 11, 0.05);
}

.scale-item.poor {
    border-left-color: var(--danger-color);
    background: rgba(239, 68, 68, 0.05);
}

.scale-value {
    display: block;
    font-weight: 700;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
}

.scale-desc {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.scale-detail {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.benefits-list h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.benefits-list ul {
    list-style: none;
}

.benefits-list li {
    display: flex;
    align-items: start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.benefits-list i {
    margin-top: 2px;
    flex-shrink: 0;
}

/* Steps Container */
.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-inverse);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin: 0 auto var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.step::after {
    content: '';
    position: absolute;
    top: 30px;
    left: 50%;
    width: 100%;
    height: 2px;
    background: var(--border-primary);
    z-index: 0;
}

.step:last-child::after {
    display: none;
}

.step-content h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.step-tip {
    background: var(--primary-light);
    border: 1px solid var(--primary-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: left;
}

/* Practice Grid */
.practice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.practice-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-primary);
    transition: all var(--transition-base);
}

.practice-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.practice-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.practice-icon i {
    font-size: var(--font-size-xl);
    color: var(--text-inverse);
}

.practice-content h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.practice-content ul {
    list-style: none;
}

.practice-content li {
    display: flex;
    align-items: start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
    font-size: var(--font-size-sm);
}

.practice-content i {
    margin-top: 2px;
    flex-shrink: 0;
}

/* FAQ Container */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-base);
}

.faq-question:hover {
    background: var(--bg-tertiary);
}

.faq-question h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
}

.faq-question i {
    color: var(--primary-color);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg);
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item.active .faq-answer {
    padding: var(--spacing-lg);
    max-height: 500px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Comparison Table */
.comparison-table {
    overflow-x: auto;
    margin: 0 calc(-1 * var(--spacing-xl));
    padding: 0 var(--spacing-xl);
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.comparison-table th {
    background: var(--primary-color);
    color: var(--text-inverse);
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.comparison-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-primary);
    font-size: var(--font-size-sm);
}

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

.comparison-table tr:nth-child(even) {
    background: var(--bg-secondary);
}

.badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

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

/* Footer */
.app-footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-primary);
    margin-top: auto;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.footer-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.separator {
    opacity: 0.5;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

.api-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.status-online {
    color: var(--success-color);
    font-size: 8px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-overlay);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

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

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

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

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

.font-weight-bold {
    font-weight: 700;
}

.font-weight-semibold {
    font-weight: 600;
}

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

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

.text-success {
    color: var(--success-color);
}

.text-warning {
    color: var(--warning-color);
}

.text-danger {
    color: var(--danger-color);
}

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

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

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

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

.border-warning {
    border-color: var(--warning-color);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .app-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .input-panel {
        position: static;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .app-main {
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }

    .panel-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .summary-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .table-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .table-controls {
        width: 100%;
        flex-direction: column;
    }

    .search-input {
        width: 100%;
    }

    .table-footer {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: center;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .summary-cards {
        grid-template-columns: 1fr;
    }

    .progress-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .action-buttons {
        grid-template-columns: 1fr;
    }

    .results-table {
        font-size: var(--font-size-xs);
    }

    .results-table th,
    .results-table td {
        padding: var(--spacing-sm);
    }
}

/* Animation Keyframes */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn var(--transition-base) ease-out;
}

.slide-in {
    animation: slideIn var(--transition-base) ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

.spin {
    animation: spin 1s linear infinite;
}

/* Focus and Accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .app-header,
    .input-panel,
    .table-controls,
    .table-footer,
    .app-footer,
    .modal {
        display: none !important;
    }

    .app-main {
        max-width: none;
        padding: 0;
    }

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

    .results-table th,
    .results-table td {
        border: 1px solid #000;
        padding: 8px;
    }
}

/* Cache Date Info Styles */
.cache-date-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    min-width: 80px;
}

.cache-date {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.cache-source {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    text-align: center;
}

.cache-source.cache-hit {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.cache-source.api-fresh {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.cache-source.cache-expired {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.cache-source.unknown-source {
    background: rgba(107, 114, 128, 0.1);
    color: var(--text-secondary);
    border: 1px solid rgba(107, 114, 128, 0.2);
}

/* Responsive adjustments for cache date column */
@media (max-width: 1200px) {
    .cache-date-info {
        min-width: 70px;
    }

    .cache-date {
        font-size: 10px;
    }
}

@media (max-width: 768px) {
    .cache-date-info {
        min-width: 60px;
        gap: 1px;
    }

    .cache-date {
        font-size: 9px;
    }

    .cache-source {
        font-size: 8px;
        padding: 1px 4px;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --border-primary: #000000;
        --text-primary: #000000;
        --text-secondary: #333333;
        --bg-primary: #ffffff;
        --bg-secondary: #f0f0f0;
    }

    .cache-source {
        border-width: 2px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* =============================================
   KEYWORD GENERATOR COMPONENTS
   ============================================= */


/* Keyword Generation Section */
.keyword-generation-section {
    display: none;
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.keyword-generation-section.active {
    display: block;
    animation: fadeIn var(--transition-base) ease-out;
}

.kw-results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-primary);
}

.kw-results-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.kw-results-title i {
    color: var(--secondary-color);
}

.kw-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.kw-btn {
    background: none;
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

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

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

/* Keyword Generator Modal */
.kw-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-overlay);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.kw-modal.active {
    display: flex;
}

.kw-modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modalSlideIn var(--transition-base) ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

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

.kw-modal-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.kw-modal-title i {
    color: var(--secondary-color);
}

.kw-modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.kw-modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.kw-modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.kw-modal-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Form Styles */
.kw-form-group {
    margin-bottom: var(--spacing-lg);
}

.kw-form-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.kw-form-label .required {
    color: var(--danger-color);
    margin-left: var(--spacing-xs);
}

.kw-form-help {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.kw-form-textarea {
    width: 100%;
    min-height: 100px;
    padding: var(--spacing-md);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    resize: vertical;
    transition: all var(--transition-fast);
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.kw-form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.kw-form-select,
.kw-form-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.kw-form-select:focus,
.kw-form-input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

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

/* Checkbox Group */
.kw-checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.kw-checkbox-item {
    display: flex;
    align-items: flex-start;
    padding: var(--spacing-md);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    background-color: var(--bg-secondary);
}

.kw-checkbox-item:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--border-secondary);
}

.kw-checkbox-item input[type="checkbox"] {
    display: none;
}

.kw-checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-secondary);
    border-radius: var(--radius-sm);
    margin-right: var(--spacing-sm);
    flex-shrink: 0;
    position: relative;
    transition: all var(--transition-fast);
}

.kw-checkbox-item input[type="checkbox"]:checked + .kw-checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.kw-checkbox-item input[type="checkbox"]:checked + .kw-checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: bold;
    font-size: 10px;
}

.kw-checkbox-content {
    flex: 1;
}

.kw-checkbox-title {
    font-weight: 600;
    color: var(--text-primary);
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.kw-checkbox-description {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    line-height: 1.4;
}

/* Slider */
.kw-slider-container {
    margin-top: var(--spacing-md);
}

.kw-form-slider {
    width: 100%;
    height: 6px;
    border-radius: var(--radius-sm);
    background: var(--border-primary);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.kw-form-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 2px solid white;
    box-shadow: var(--shadow-sm);
}

.kw-form-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 2px solid white;
    box-shadow: var(--shadow-sm);
}

.kw-slider-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
}

.kw-quality-value {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.kw-slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-xs);
    color: var(--text-tertiary);
    font-size: var(--font-size-xs);
}

/* Progress Section */
.kw-progress-section {
    display: none;
    padding: var(--spacing-xl);
    text-align: center;
}

.kw-progress-section.active {
    display: block;
}

.kw-progress-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.kw-progress-container {
    margin-bottom: var(--spacing-lg);
}

.kw-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-primary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.kw-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-sm);
    transition: width var(--transition-base);
    width: 0%;
}

.kw-progress-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.kw-progress-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.kw-stat-item {
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
}

.kw-stat-icon {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.kw-stat-label {
    display: block;
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    margin-bottom: var(--spacing-xs);
}

.kw-stat-value {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

/* Keywords List */
.kw-keywords-list {
    display: grid;
    gap: var(--spacing-sm);
    max-height: 400px;
    overflow-y: auto;
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
}

.kw-keyword-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
    transition: all var(--transition-fast);
}

.kw-keyword-item:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-secondary);
}

.kw-keyword-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.kw-keyword-checkbox {
    margin-right: var(--spacing-sm);
}

.kw-keyword-text {
    font-weight: 500;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.kw-keyword-meta {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* Quality Score Badge */
.kw-quality-score {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-align: center;
    min-width: 32px;
}

.kw-quality-score[data-score^="0"],
.kw-quality-score[data-score^="1"],
.kw-quality-score[data-score^="2"],
.kw-quality-score[data-score^="3"],
.kw-quality-score[data-score^="4"] {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

.kw-quality-score[data-score^="5"],
.kw-quality-score[data-score^="6"] {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.kw-quality-score[data-score^="7"],
.kw-quality-score[data-score^="8"] {
    background: rgba(59, 130, 246, 0.1);
    color: #2563eb;
}

.kw-quality-score[data-score^="9"],
.kw-quality-score[data-score="100"] {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

/* Intent Badge */
.kw-intent-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-align: center;
}

.kw-intent-informational {
    background: rgba(59, 130, 246, 0.1);
    color: #2563eb;
}

.kw-intent-commercial {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.kw-intent-transactional {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

.kw-intent-navigational {
    background: rgba(168, 85, 247, 0.1);
    color: #9333ea;
}

/* Source Badge */
.kw-source-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    background: rgba(107, 114, 128, 0.1);
    color: var(--text-secondary);
}

/* Button Styles for Modal */
.kw-btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.kw-btn-secondary {
    background: none;
    color: var(--text-secondary);
    border: 1px solid var(--border-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .kw-modal-content {
        width: 95%;
        max-height: 95vh;
    }

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

    .kw-progress-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .kw-modal-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .kw-modal-actions {
        justify-content: center;
    }

    .kw-results-header {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }

    .kw-actions {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .kw-progress-stats {
        grid-template-columns: 1fr;
    }

    .kw-keyword-item {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }

    .kw-keyword-info {
        justify-content: space-between;
    }
}

/* Dark Theme Adjustments */
[data-theme="dark"] .kw-checkbox-item {
    background-color: var(--bg-tertiary);
}

[data-theme="dark"] .kw-checkbox-item:hover {
    background-color: rgba(55, 65, 81, 0.5);
}

[data-theme="dark"] .kw-keywords-list {
    background-color: var(--bg-tertiary);
}

[data-theme="dark"] .kw-stat-item {
    background-color: var(--bg-tertiary);
}

/* =============================================
   HERO SECTION OPTIMIZATIONS
   ============================================= */

/* Hero Content Height Adjustment */
.hero-content {
    padding: var(--spacing-xl) 0;
    min-height: 250px;
}

/* Horizontal KGR Formula Layout */
.kgr-formula-horizontal {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    max-width: 600px;
    margin: 0 auto;
}

.kgr-formula-horizontal .formula-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: var(--font-size-base);
}

.kgr-formula-horizontal .formula-label {
    color: var(--primary-color);
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.kgr-formula-horizontal .formula-value {
    color: var(--text-primary);
    background: rgba(79, 70, 229, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    border: 1px solid rgba(79, 70, 229, 0.2);
    white-space: nowrap;
}

.kgr-formula-horizontal .formula-target {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-md);
}

.kgr-formula-horizontal .target-label {
    background: var(--success-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    white-space: nowrap;
}

.kgr-formula-horizontal .target-desc {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    text-align: center;
}

/* Mobile Responsive for Horizontal Formula */
@media (max-width: 768px) {
    .hero-content {
        padding: var(--spacing-lg) 0;
        min-height: 200px;
    }

    .kgr-formula-horizontal {
        gap: var(--spacing-sm);
        max-width: 100%;
    }

    .kgr-formula-horizontal .formula-item {
        font-size: var(--font-size-sm);
    }

    .kgr-formula-horizontal .formula-label {
        font-size: var(--font-size-base);
    }

    .kgr-formula-horizontal .formula-value {
        font-size: var(--font-size-xs);
        padding: 2px var(--spacing-xs);
    }

    .kgr-formula-horizontal .formula-target {
        margin-left: var(--spacing-sm);
    }

    .kgr-formula-horizontal .target-label {
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 480px) {
    .kgr-formula-horizontal {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .kgr-formula-horizontal .formula-target {
        margin-left: 0;
        margin-top: var(--spacing-sm);
    }
}

/* Mobile Responsive Updates for Header */
@media (max-width: 768px) {
    .header-actions .keyword-generator-btn span {
        display: none;
    }

    .header-actions .keyword-generator-btn {
        padding: var(--spacing-sm);
        min-width: auto;
    }

    .header-actions {
        gap: var(--spacing-sm);
    }

    /* Navigation Mobile Styles */
    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .main-nav {
        order: 3;
        width: 100%;
        margin-top: var(--spacing-sm);
    }

    .nav-list {
        justify-content: center;
        padding: var(--spacing-sm);
        background-color: var(--bg-secondary);
        border: 1px solid var(--border-primary);
    }

    .nav-link {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-xs);
    }

    .nav-link span {
        display: none;
    }

    .nav-link i {
        font-size: var(--font-size-base);
    }

    .nav-link.active::after {
        display: none;
    }
}

@media (max-width: 480px) {
    .header-actions {
        gap: var(--spacing-xs);
    }

    /* Extra Small Screen Navigation */
    .nav-list {
        gap: 0;
        border-radius: var(--radius-md);
    }

    .nav-link {
        padding: var(--spacing-sm);
        border-radius: 0;
    }

    .nav-link:first-child {
        border-radius: var(--radius-md) 0 0 var(--radius-md);
    }

    .nav-link:last-child {
        border-radius: 0 var(--radius-md) var(--radius-md) 0;
    }
}