/* ==================== */
/* CSS Variables */
/* ==================== */
:root {
    --primary-color: #00D9A3;
    --primary-dark: #00B88A;
    --secondary-color: #7B68EE;
    --background: #f8f9ff;
    --card-bg: #ffffff;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --border-color: #e2e8f0;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --transition: all 0.3s ease;
}

/* ==================== */
/* 기본 스타일 */
/* ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== */
/* 헤더 */
/* ==================== */
.header {
    background: var(--card-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.logo i {
    color: var(--primary-color);
    font-size: 28px;
}

.logo strong {
    color: var(--primary-color);
}

.main-nav {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.nav-btn {
    padding: 10px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
    position: relative;
}

.nav-btn:hover {
    background: rgba(0, 217, 163, 0.1);
    color: var(--primary-color);
}

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

.nav-btn .badge {
    background: #ff4757;
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 600;
}

.nav-btn.active .badge {
    background: rgba(255, 255, 255, 0.3);
}

/* ==================== */
/* 메인 콘텐츠 */
/* ==================== */
.main-content {
    padding: 40px 0;
    min-height: calc(100vh - 80px);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

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

/* ==================== */
/* 검색 섹션 */
/* ==================== */
.search-section {
    text-align: center;
    padding: 60px 20px;
}

.search-section h1 {
    font-size: 42px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.search-box {
    display: flex;
    max-width: 700px;
    margin: 0 auto 20px;
    gap: 10px;
}

.search-box input {
    flex: 1;
    padding: 16px 24px;
    font-size: 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    transition: var(--transition);
    background: var(--card-bg);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 217, 163, 0.1);
}

.quick-examples {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.quick-examples span {
    color: var(--text-secondary);
    font-size: 14px;
}

.quick-examples button {
    padding: 8px 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-primary);
}

.quick-examples button:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(0, 217, 163, 0.05);
}

/* ==================== */
/* 버튼 */
/* ==================== */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: inherit;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 217, 163, 0.3);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

/* ==================== */
/* 통계 카드 */
/* ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.stat-card {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-info {
    flex: 1;
    position: relative;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.stat-value {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.tooltip-btn {
    position: absolute;
    top: 0;
    right: 0;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
}

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

/* ==================== */
/* 로딩 */
/* ==================== */
.loading {
    text-align: center;
    padding: 60px 20px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

/* ==================== */
/* 점수 섹션 */
/* ==================== */
.score-section {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin: 40px 0;
}

.score-section h3 {
    margin-bottom: 30px;
    font-size: 24px;
}

.score-display {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 40px;
    align-items: center;
}

.score-circle {
    position: relative;
    width: 150px;
    height: 150px;
}

.score-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.score-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
}

.score-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.score-details {
    flex: 1;
}

.score-item {
    display: grid;
    grid-template-columns: 80px 1fr 40px;
    gap: 12px;
    align-items: center;
    margin-bottom: 16px;
}

.score-bar {
    height: 10px;
    background: var(--border-color);
    border-radius: 5px;
    overflow: hidden;
}

.score-bar-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 5px;
    transition: width 1s ease;
}

.score-num {
    font-weight: 600;
    text-align: right;
}

.score-message {
    grid-column: 1 / -1;
    background: rgba(0, 217, 163, 0.1);
    padding: 20px;
    border-radius: var(--radius);
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.score-message i {
    color: var(--primary-color);
    font-size: 20px;
}

/* ==================== */
/* 의도 분석 */
/* ==================== */
.intent-section {
    margin: 40px 0;
}

.intent-section h3 {
    margin-bottom: 20px;
    font-size: 24px;
}

.intent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.intent-card {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
}

.intent-card h4 {
    margin-bottom: 8px;
    font-size: 18px;
}

.intent-percentage {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 12px 0;
}

.intent-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==================== */
/* 차트 */
/* ==================== */
.charts-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.chart-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.chart-card h3 {
    margin-bottom: 20px;
    font-size: 20px;
}

.chart-card canvas {
    max-height: 300px;
}

/* ==================== */
/* 추천 키워드 */
/* ==================== */
.recommendations-section {
    margin: 60px 0;
}

.recommendations-section > h3 {
    font-size: 28px;
    margin-bottom: 40px;
    text-align: center;
}

.recommendation-category {
    margin-bottom: 50px;
}

.recommendation-category h4 {
    font-size: 20px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.recommendation-category h4 i {
    color: var(--primary-color);
}

.category-desc {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.keyword-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

.keyword-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 2px solid transparent;
}

.keyword-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.keyword-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.keyword-stats {
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 13px;
}

.keyword-stat {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
}

.keyword-actions {
    display: flex;
    gap: 8px;
}

.keyword-actions button {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.keyword-actions button:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ==================== */
/* ROI 계산기 */
/* ==================== */
.roi-section {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin: 40px 0;
}

.roi-section h3 {
    margin-bottom: 30px;
    font-size: 24px;
}

.roi-calculator {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.roi-input-group {
    margin-bottom: 24px;
}

.roi-input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.roi-input-group input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
}

.roi-input-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
}

.roi-result {
    text-align: center;
    padding: 30px;
    background: rgba(0, 217, 163, 0.1);
    border-radius: var(--radius);
}

.roi-result h4 {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.roi-amount {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.roi-note {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ==================== */
/* 시뮬레이터 */
/* ==================== */
.simulator-section {
    margin: 40px 0;
}

.simulator-section h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

.section-subtitle {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

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

.simulator-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.rank-badge {
    font-size: 32px;
    margin-bottom: 20px;
}

.simulator-stat {
    margin-bottom: 16px;
    padding: 12px;
    background: var(--background);
    border-radius: 8px;
}

.simulator-stat .stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.simulator-stat .stat-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

/* ==================== */
/* 액션 버튼 */
/* ==================== */
.action-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin: 40px 0;
    flex-wrap: wrap;
}

/* ==================== */
/* 트렌딩 키워드 */
/* ==================== */
.trending-section {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin: 40px 0;
}

.trending-section h3 {
    margin-bottom: 10px;
    font-size: 24px;
}

.trending-list {
    display: grid;
    gap: 12px;
    margin-top: 20px;
}

.trending-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--background);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.trending-item:hover {
    background: rgba(0, 217, 163, 0.1);
}

.trending-rank {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-secondary);
    min-width: 30px;
}

.trending-keyword {
    flex: 1;
    font-weight: 600;
}

.trending-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.trending-badge.up {
    background: #e8f5e9;
    color: #4caf50;
}

.trending-badge.down {
    background: #ffebee;
    color: #f44336;
}

.trending-badge.new {
    background: #e3f2fd;
    color: #2196f3;
}

/* ==================== */
/* 일괄 분석 */
/* ==================== */
.bulk-input-section {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.input-method-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.method-tab {
    padding: 12px 20px;
    border: 2px solid var(--border-color);
    background: transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.method-tab.active {
    border-color: var(--primary-color);
    background: rgba(0, 217, 163, 0.1);
    color: var(--primary-color);
}

.input-method {
    display: none;
}

.input-method.active {
    display: block;
}

#bulkTextarea {
    width: 100%;
    min-height: 300px;
    padding: 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 14px;
    resize: vertical;
    margin-bottom: 16px;
}

#bulkTextarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.csv-upload {
    border: 3px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.csv-upload:hover {
    border-color: var(--primary-color);
    background: rgba(0, 217, 163, 0.05);
}

.csv-upload i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.bulk-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.bulk-stat-card {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.bulk-stat-card .label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.bulk-stat-card .value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
}

.table-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--background);
    font-weight: 600;
    color: var(--text-primary);
}

.data-table tr:hover {
    background: rgba(0, 217, 163, 0.05);
}

/* ==================== */
/* 고급 분석 레이아웃 */
/* ==================== */
.advanced-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 30px;
    min-height: 600px;
}

.advanced-sidebar {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.advanced-sidebar h3 {
    margin-bottom: 20px;
    font-size: 18px;
}

.advanced-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.advanced-nav-btn {
    padding: 12px 16px;
    border: none;
    background: transparent;
    text-align: left;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--text-primary);
}

.advanced-nav-btn:hover {
    background: rgba(0, 217, 163, 0.1);
    color: var(--primary-color);
}

.advanced-nav-btn.active {
    background: var(--primary-color);
    color: white;
}

.advanced-nav-btn i {
    width: 20px;
    text-align: center;
}

.advanced-content {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* ==================== */
/* 모달 */
/* ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.welcome-modal h2 {
    margin-bottom: 16px;
    font-size: 28px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.feature-item {
    text-align: center;
    padding: 20px;
    background: var(--background);
    border-radius: var(--radius);
}

.feature-item i {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.feature-item h4 {
    margin-bottom: 4px;
}

.feature-item p {
    font-size: 13px;
    color: var(--text-secondary);
}

.modal-buttons {
    display: flex;
    gap: 12px;
}

.modal-buttons .btn {
    flex: 1;
}

/* ==================== */
/* 빈 상태 */
/* ==================== */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 64px;
    color: var(--border-color);
    margin-bottom: 20px;
}

.empty-state h3 {
    margin-bottom: 12px;
    color: var(--text-primary);
}

/* ==================== */
/* 플로팅 도움말 */
/* ==================== */
.floating-help-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0, 217, 163, 0.3);
    transition: var(--transition);
    z-index: 999;
}

.floating-help-btn:hover {
    transform: scale(1.1);
}

.help-menu {
    position: fixed;
    bottom: 100px;
    right: 30px;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-hover);
    padding: 8px;
    display: none;
    flex-direction: column;
    gap: 4px;
    z-index: 998;
}

.help-menu.active {
    display: flex;
}

.help-item {
    padding: 12px 20px;
    border: none;
    background: transparent;
    text-align: left;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 12px;
    white-space: nowrap;
}

.help-item:hover {
    background: rgba(0, 217, 163, 0.1);
    color: var(--primary-color);
}

/* ==================== */
/* 토스트 */
/* ==================== */
.toast {
    position: fixed;
    top: 100px;
    right: 30px;
    background: var(--card-bg);
    padding: 16px 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-hover);
    display: none;
    align-items: center;
    gap: 12px;
    z-index: 9999;
    animation: slideIn 0.3s ease;
}

.toast.show {
    display: flex;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==================== */
/* 알림 */
/* ==================== */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius);
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.alert-info {
    background: #e3f2fd;
    color: #1976d2;
}

.alert i {
    font-size: 20px;
}

/* ==================== */
/* 배지 */
/* ==================== */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
}

.badge-gray {
    background: #e0e0e0;
    color: #616161;
}

/* ==================== */
/* 설정 페이지 */
/* ==================== */
.settings-section {
    margin-bottom: 50px;
}

.settings-section h3 {
    font-size: 22px;
    margin-bottom: 20px;
}

.data-mode-selector {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.radio-card {
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    cursor: pointer;
    transition: var(--transition);
}

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

.radio-card.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.radio-card input[type="radio"] {
    display: none;
}

.radio-card input[type="radio"]:checked + .radio-content {
    color: var(--primary-color);
}

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

.radio-content i {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.radio-content h4 {
    margin-bottom: 8px;
}

.radio-content p {
    font-size: 14px;
    color: var(--text-secondary);
}

.api-services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.api-service-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
}

.api-service-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.api-service-header i {
    font-size: 24px;
    color: var(--primary-color);
}

.api-service-header h4 {
    flex: 1;
    font-size: 16px;
}

.api-service-card p {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.api-service-card ul {
    list-style: none;
    margin: 16px 0;
}

.api-service-card li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.api-service-card li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.resource-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
}

.resource-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.resource-card i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.resource-card h4 {
    margin-bottom: 8px;
}

.resource-card p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ==================== */
/* 반응형 */
/* ==================== */
@media (max-width: 1024px) {
    .advanced-layout {
        grid-template-columns: 1fr;
    }
    
    .advanced-sidebar {
        position: static;
    }
    
    .advanced-nav {
        flex-direction: row;
        overflow-x: auto;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 16px;
    }
    
    .main-nav {
        width: 100%;
        justify-content: center;
    }
    
    .search-section h1 {
        font-size: 32px;
    }
    
    .search-box {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .score-display {
        grid-template-columns: 1fr;
    }
    
    .charts-section {
        grid-template-columns: 1fr;
    }
    
    .roi-calculator {
        grid-template-columns: 1fr;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .main-nav {
        gap: 4px;
    }
    
    .nav-btn {
        font-size: 12px;
        padding: 8px 12px;
    }
    
    .nav-btn i {
        display: none;
    }
}