/**
 * Joyn Collector - Frontend CSS
 * 
 * @package Joyn_Collector
 * @version 1.0.0
 */

/* === 변수 === */
:root {
    --jc-primary: #6366f1;
    --jc-primary-dark: #4f46e5;
    --jc-primary-light: #818cf8;
    --jc-secondary: #64748b;
    --jc-success: #22c55e;
    --jc-warning: #f59e0b;
    --jc-danger: #ef4444;
    --jc-info: #0ea5e9;
    
    --jc-bg: #ffffff;
    --jc-bg-secondary: #f8fafc;
    --jc-bg-tertiary: #f1f5f9;
    --jc-text: #1e293b;
    --jc-text-secondary: #64748b;
    --jc-text-muted: #94a3b8;
    --jc-border: #e2e8f0;
    --jc-border-focus: #6366f1;
    
    --jc-radius: 12px;
    --jc-radius-sm: 8px;
    --jc-radius-lg: 16px;
    --jc-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --jc-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --jc-transition: all 0.2s ease;
}

/* === 기본 레이아웃 === */
.jc-collector {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--jc-text);
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
}

.jc-collector * {
    box-sizing: border-box;
}

/* === 로그인 필요 === */
.jc-login-required {
    text-align: center;
    padding: 60px 20px;
    background: var(--jc-bg-secondary);
    border-radius: var(--jc-radius-lg);
}

.jc-login-required i {
    font-size: 48px;
    color: var(--jc-text-muted);
    margin-bottom: 16px;
}

.jc-login-required p {
    color: var(--jc-text-secondary);
    margin-bottom: 20px;
}

/* === 헤더 === */
.jc-header {
    text-align: center;
    margin-bottom: 32px;
}

.jc-header h2 {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.jc-header h2 i {
    color: var(--jc-primary);
}

.jc-description {
    color: var(--jc-text-secondary);
    margin: 0;
    font-size: 15px;
}

/* === 단계 표시 === */
.jc-steps {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.jc-step {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--jc-bg-secondary);
    border-radius: 50px;
    font-size: 14px;
    color: var(--jc-text-secondary);
    transition: var(--jc-transition);
}

.jc-step.active {
    background: var(--jc-primary);
    color: white;
}

.jc-step.completed {
    background: var(--jc-success);
    color: white;
}

.jc-step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    font-weight: 600;
    font-size: 12px;
}

.jc-step-label {
    font-weight: 500;
}

/* === 패널 === */
.jc-panel {
    background: var(--jc-bg);
    border: 1px solid var(--jc-border);
    border-radius: var(--jc-radius-lg);
    box-shadow: var(--jc-shadow);
    display: none;
}

.jc-panel.active {
    display: block;
}

.jc-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--jc-border);
}

.jc-panel-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.jc-panel-header h3 i {
    color: var(--jc-primary);
}

.jc-panel-body {
    padding: 24px;
}

.jc-panel-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--jc-border);
    background: var(--jc-bg-secondary);
    border-radius: 0 0 var(--jc-radius-lg) var(--jc-radius-lg);
}

.jc-footer-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* === 폼 요소 === */
.jc-form-group {
    margin-bottom: 20px;
}

.jc-form-group:last-child {
    margin-bottom: 0;
}

.jc-form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--jc-text);
    font-size: 14px;
}

.jc-form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.jc-select,
.jc-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--jc-border);
    border-radius: var(--jc-radius-sm);
    font-size: 15px;
    color: var(--jc-text);
    background: var(--jc-bg);
    transition: var(--jc-transition);
}

.jc-select:focus,
.jc-input:focus {
    outline: none;
    border-color: var(--jc-border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.jc-select:disabled,
.jc-input:disabled {
    background: var(--jc-bg-tertiary);
    cursor: not-allowed;
    opacity: 0.7;
}

.jc-input-group {
    display: flex;
    gap: 8px;
}

.jc-input-group .jc-input {
    flex: 1;
}

/* === 버튼 === */
.jc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--jc-radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--jc-transition);
    text-decoration: none;
}

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

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

.jc-btn-primary:hover:not(:disabled) {
    background: var(--jc-primary-dark);
}

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

.jc-btn-secondary:hover:not(:disabled) {
    background: var(--jc-border);
}

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

.jc-btn-outline:hover:not(:disabled) {
    background: var(--jc-bg-secondary);
    border-color: var(--jc-primary);
    color: var(--jc-primary);
}

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

.jc-btn-ghost:hover {
    color: var(--jc-text);
    background: var(--jc-bg-secondary);
}

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

/* === 라디오 그룹 === */
.jc-radio-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.jc-radio {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.jc-radio input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--jc-primary);
}

/* === 체크박스 === */
.jc-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
}

.jc-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--jc-primary);
}

/* === 선택된 카테고리 === */
.jc-selected-category {
    margin-top: 20px;
    padding: 16px;
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f4ff 100%);
    border-radius: var(--jc-radius-sm);
    border: 1px solid #c7deff;
}

.jc-category-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: var(--jc-primary-dark);
}

.jc-category-badge i {
    color: var(--jc-text-muted);
}

/* === AI 생성 === */
.jc-ai-generate {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, #f0f7ff 0%, #fef7ff 100%);
    border-radius: var(--jc-radius);
    margin-bottom: 24px;
}

.jc-ai-generate .jc-btn {
    background: linear-gradient(135deg, var(--jc-primary) 0%, #8b5cf6 100%);
}

.jc-ai-generate .jc-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--jc-shadow-lg);
}

.jc-hint {
    font-size: 13px;
    color: var(--jc-text-muted);
    margin: 8px 0 0;
}

/* === 구분선 === */
.jc-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 24px 0;
    color: var(--jc-text-muted);
    font-size: 13px;
}

.jc-divider::before,
.jc-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--jc-border);
}

.jc-divider span {
    padding: 0 16px;
}

/* === 키워드 목록 === */
.jc-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
    min-height: 40px;
}

.jc-keyword-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--jc-bg-secondary);
    border: 1px solid var(--jc-border);
    border-radius: 50px;
    font-size: 14px;
    transition: var(--jc-transition);
    cursor: pointer;
}

.jc-keyword-tag:hover {
    border-color: var(--jc-primary);
    background: var(--jc-bg);
}

.jc-keyword-tag.selected {
    background: var(--jc-primary);
    border-color: var(--jc-primary);
    color: white;
}

.jc-keyword-tag .jc-remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--jc-transition);
}

.jc-keyword-tag .jc-remove:hover {
    background: rgba(239, 68, 68, 0.8);
    color: white;
}

.jc-keyword-tag.selected .jc-remove:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* === 검색 옵션 === */
.jc-search-options {
    background: var(--jc-bg-secondary);
    padding: 20px;
    border-radius: var(--jc-radius);
    margin-bottom: 24px;
}

/* === 검색 결과 === */
.jc-search-results {
    border-top: 1px solid var(--jc-border);
    padding-top: 24px;
}

.jc-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--jc-border);
}

.jc-results-info {
    font-size: 14px;
    color: var(--jc-text-secondary);
}

.jc-results-info span {
    font-weight: 600;
    color: var(--jc-primary);
}

/* === 비디오 그리드 === */
.jc-video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.jc-video-card {
    background: var(--jc-bg);
    border: 2px solid var(--jc-border);
    border-radius: var(--jc-radius);
    overflow: hidden;
    cursor: pointer;
    transition: var(--jc-transition);
}

.jc-video-card:hover {
    border-color: var(--jc-primary-light);
    box-shadow: var(--jc-shadow);
}

.jc-video-card.selected {
    border-color: var(--jc-primary);
    background: linear-gradient(135deg, #f0f7ff 0%, #fef7ff 100%);
}

.jc-video-thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--jc-bg-tertiary);
}

.jc-video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.jc-video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.jc-video-check {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    background: white;
    border: 2px solid var(--jc-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--jc-transition);
}

.jc-video-card.selected .jc-video-check {
    background: var(--jc-primary);
    border-color: var(--jc-primary);
    color: white;
}

.jc-video-info {
    padding: 12px;
}

.jc-video-title {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    margin: 0 0 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.jc-video-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 12px;
    color: var(--jc-text-muted);
}

.jc-video-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* === 페이지네이션 === */
.jc-pagination {
    display: flex;
    justify-content: center;
    margin-top: 24px;
}

/* === 등록 요약 === */
.jc-register-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.jc-summary-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--jc-bg-secondary);
    border-radius: var(--jc-radius);
}

.jc-summary-item i {
    font-size: 32px;
    color: var(--jc-primary);
}

.jc-summary-item label {
    display: block;
    font-size: 13px;
    color: var(--jc-text-muted);
    margin-bottom: 4px;
}

.jc-summary-item strong {
    font-size: 16px;
    color: var(--jc-text);
}

/* === 미리보기 목록 === */
.jc-preview-list {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--jc-border);
    border-radius: var(--jc-radius);
    margin-bottom: 20px;
}

.jc-preview-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-bottom: 1px solid var(--jc-border);
}

.jc-preview-item:last-child {
    border-bottom: none;
}

.jc-preview-thumb {
    width: 80px;
    height: 45px;
    border-radius: 4px;
    overflow: hidden;
    flex-shrink: 0;
}

.jc-preview-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.jc-preview-info {
    flex: 1;
    min-width: 0;
}

.jc-preview-title {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.jc-preview-channel {
    font-size: 12px;
    color: var(--jc-text-muted);
}

/* === 등록 옵션 === */
.jc-register-options {
    padding: 16px;
    background: var(--jc-bg-secondary);
    border-radius: var(--jc-radius);
}

/* === 결과 패널 === */
.jc-result-panel {
    text-align: center;
    padding: 60px 24px;
}

.jc-result-content {
    max-width: 400px;
    margin: 0 auto;
}

.jc-result-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}

.jc-result-icon.success {
    background: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%);
    color: var(--jc-success);
}

.jc-result-icon.error {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: var(--jc-danger);
}

.jc-result-panel h3 {
    font-size: 24px;
    margin: 0 0 12px;
}

.jc-result-panel p {
    color: var(--jc-text-secondary);
    margin: 0 0 20px;
}

.jc-result-details {
    background: var(--jc-bg-secondary);
    padding: 16px;
    border-radius: var(--jc-radius);
    margin-bottom: 24px;
    text-align: left;
}

.jc-result-details p {
    margin: 4px 0;
    font-size: 14px;
}

.jc-result-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* === 로딩 오버레이 === */
.jc-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
    border-radius: var(--jc-radius-lg);
}

.jc-loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--jc-border);
    border-top-color: var(--jc-primary);
    border-radius: 50%;
    animation: jc-spin 1s linear infinite;
}

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

.jc-loading-overlay p {
    margin-top: 16px;
    color: var(--jc-text-secondary);
    font-size: 14px;
}

/* === 반응형 === */
@media (max-width: 768px) {
    .jc-collector {
        padding: 16px;
    }
    
    .jc-header h2 {
        font-size: 22px;
    }
    
    .jc-steps {
        gap: 4px;
    }
    
    .jc-step {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .jc-step-label {
        display: none;
    }
    
    .jc-panel-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    
    .jc-footer-actions {
        flex-direction: column;
    }
    
    .jc-footer-actions .jc-btn {
        width: 100%;
    }
    
    .jc-video-grid {
        grid-template-columns: 1fr;
    }
    
    .jc-result-actions {
        flex-direction: column;
    }
}

/* === 다크 모드 === */
@media (prefers-color-scheme: dark) {
    :root {
        --jc-bg: #1e293b;
        --jc-bg-secondary: #0f172a;
        --jc-bg-tertiary: #334155;
        --jc-text: #f1f5f9;
        --jc-text-secondary: #94a3b8;
        --jc-text-muted: #64748b;
        --jc-border: #334155;
    }
    
    .jc-loading-overlay {
        background: rgba(15, 23, 42, 0.9);
    }
    
    .jc-selected-category,
    .jc-ai-generate,
    .jc-video-card.selected {
        background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    }
    
    .jc-select,
    .jc-input {
        background: var(--jc-bg-tertiary);
        color: var(--jc-text);
    }
}