/**
 * 자유게시판 전용 CSS (freeboard.css)
 * 기존 app.css와 board.css 활용하여 심플하고 세련된 화이트 모던 디자인
 * 반응형 지원
 */

/* =================================
   자유게시판 메인 컨테이너
   ================================= */

.freeboard-container {
    padding: var(--spacing-xl, 2rem) 0;
    min-height: 100vh;
    background: linear-gradient(135deg, #fafbfc 0%, #f7fafc 100%);
}

/* =================================
   게시판 헤더 (모던 화이트 디자인)
   ================================= */

.freeboard-header {
    background: var(--bg-white, #ffffff);
    border: 1px solid var(--border-light, #e2e8f0);
    border-radius: 20px;
    padding: var(--spacing-2xl, 3rem);
    margin-bottom: var(--spacing-xl, 2rem);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
}

.freeboard-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-green, #00c896) 0%, var(--secondary-blue, #0084f6) 100%);
}

.freeboard-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg, 1.5rem);
    margin-bottom: var(--spacing-xl, 2rem);
}

.freeboard-title .icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-green, #00c896) 0%, #1dd1a1 100%);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.75rem;
    box-shadow: 0 8px 32px rgba(0, 200, 150, 0.3);
    position: relative;
}

.freeboard-title .icon::after {
    content: '';
    position: absolute;
    inset: 3px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
    border-radius: 15px;
    pointer-events: none;
}

.title-content h1 {
    font-size: var(--font-size-3xl, 1.875rem);
    font-weight: 800;
    color: var(--text-primary, #1a1a1a);
    margin: 0 0 var(--spacing-xs, 0.25rem) 0;
    letter-spacing: -0.025em;
    background: linear-gradient(135deg, var(--text-primary, #1a1a1a) 0%, #4a5568 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.freeboard-description {
    color: var(--text-secondary, #6b7280);
    font-size: var(--font-size-base, 1rem);
    line-height: 1.6;
    margin: 0;
    font-weight: 500;
}

/* 게시판 통계 */
.freeboard-stats {
    display: flex;
    gap: var(--spacing-2xl, 3rem);
    justify-content: center;
    padding: var(--spacing-lg, 1.5rem) 0;
    border-top: 1px solid var(--border-light, #e2e8f0);
    background: linear-gradient(135deg, #fafbfc 0%, transparent 100%);
    margin-top: var(--spacing-lg, 1.5rem);
    border-radius: 12px;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-sm, 0.5rem);
}

.stat-number {
    display: block;
    font-size: var(--font-size-2xl, 1.5rem);
    font-weight: 700;
    color: var(--primary-green, #00c896);
    margin-bottom: var(--spacing-xs, 0.25rem);
}

.stat-label {
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--text-secondary, #6b7280);
    font-weight: 500;
}

/* =================================
   게시판 컨트롤
   ================================= */

.freeboard-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl, 2rem);
    gap: var(--spacing-lg, 1.5rem);
    flex-wrap: wrap;
}

.search-filters {
    display: flex;
    gap: var(--spacing-md, 1rem);
    flex: 1;
    min-width: 320px;
}

.search-group {
    display: flex;
    gap: var(--spacing-sm, 0.5rem);
    flex: 1;
    align-items: center;
}

.search-category {
    min-width: 120px;
    background: var(--bg-white, #ffffff);
    border: 2px solid var(--border-light, #e2e8f0);
    border-radius: 12px;
    padding: var(--spacing-sm, 0.5rem) var(--spacing-lg, 1.5rem) var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 500;
    transition: var(--transition-fast, all 0.15s ease);
}

.search-category:focus {
    outline: none;
    border-color: var(--primary-green, #00c896);
    box-shadow: 0 0 0 3px rgba(0, 200, 150, 0.1);
}

.search-input-wrapper {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-input {
    width: 100%;
    background: var(--bg-white, #ffffff);
    border: 2px solid var(--border-light, #e2e8f0);
    border-radius: 12px;
    padding: var(--spacing-sm, 0.5rem) 50px var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 500;
    transition: var(--transition-fast, all 0.15s ease);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-green, #00c896);
    box-shadow: 0 0 0 3px rgba(0, 200, 150, 0.1);
}

.search-input::placeholder {
    color: var(--text-muted, #9ca3af);
    font-weight: 400;
}

.search-btn {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-green, #00c896);
    color: white;
    border: none;
    border-radius: 8px;
    width: 40px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast, all 0.15s ease);
}

.search-btn:hover {
    background: var(--primary-green-dark, #00b085);
    transform: translateY(-50%) scale(1.05);
}

.freeboard-actions {
    display: flex;
    gap: var(--spacing-sm, 0.5rem);
    align-items: center;
}

.btn-outline-secondary {
    background: var(--bg-white, #ffffff);
    color: var(--text-secondary, #6b7280);
    border: 2px solid var(--border-light, #e2e8f0);
    border-radius: 12px;
    padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
    font-weight: 500;
    transition: var(--transition-fast, all 0.15s ease);
}

.btn-outline-secondary:hover {
    background: var(--bg-lighter, #f7fafc);
    border-color: var(--border-medium, #cbd5e0);
    color: var(--text-primary, #1a1a1a);
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-green, #00c896) 0%, #1dd1a1 100%);
    color: white;
    border: none;
    border-radius: 12px;
    padding: var(--spacing-sm, 0.5rem) var(--spacing-lg, 1.5rem);
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(0, 200, 150, 0.3);
    transition: var(--transition-fast, all 0.15s ease);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 200, 150, 0.4);
}

/* =================================
   게시글 목록
   ================================= */

.freeboard-list {
    background: var(--bg-white, #ffffff);
    border: 1px solid var(--border-light, #e2e8f0);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.list-header {
    background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
    padding: var(--spacing-lg, 1.5rem) var(--spacing-xl, 2rem);
    border-bottom: 1px solid var(--border-light, #e2e8f0);
    display: grid;
    grid-template-columns: 1fr auto auto auto auto;
    gap: var(--spacing-lg, 1.5rem);
    align-items: center;
}

.header-item {
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 600;
    color: var(--text-secondary, #6b7280);
    text-align: center;
}

.header-item:first-child {
    text-align: left;
}

.list-item {
    padding: var(--spacing-lg, 1.5rem) var(--spacing-xl, 2rem);
    border-bottom: 1px solid var(--border-light, #e2e8f0);
    display: grid;
    grid-template-columns: 1fr auto auto auto auto;
    gap: var(--spacing-lg, 1.5rem);
    align-items: center;
    transition: var(--transition-fast, all 0.15s ease);
    position: relative;
}

.list-item:last-child {
    border-bottom: none;
}

.list-item:hover {
    background: linear-gradient(135deg, #fafbfc 0%, transparent 100%);
    transform: translateX(4px);
}

.list-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0;
    background: var(--primary-green, #00c896);
    transition: var(--transition-fast, all 0.15s ease);
}

.list-item:hover::before {
    width: 4px;
}

/* 공지사항 특별 스타일 */
.notice-item {
    background: linear-gradient(135deg, #fffbeb 0%, var(--bg-white, #ffffff) 100%);
    border-bottom-color: #fde68a;
}

.notice-item::before {
    background: #f59e0b;
    width: 4px;
}

/* 게시글 메인 영역 */
.item-main {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs, 0.25rem);
    min-width: 0;
}

.item-badges {
    display: flex;
    gap: var(--spacing-xs, 0.25rem);
    margin-bottom: var(--spacing-xs, 0.25rem);
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge-notice {
    background: #f59e0b;
    color: white;
}

.badge-hot {
    background: #ef4444;
    color: white;
}

.item-title {
    color: var(--text-primary, #1a1a1a);
    text-decoration: none;
    font-size: var(--font-size-base, 1rem);
    font-weight: 600;
    line-height: 1.4;
    transition: var(--transition-fast, all 0.15s ease);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm, 0.5rem);
}

.item-title:hover {
    color: var(--primary-green, #00c896);
    text-decoration: none;
}

.new-indicator {
    background: #ef4444;
    color: white;
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 0.625rem;
    font-weight: 700;
}

.item-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md, 1rem);
    margin-top: var(--spacing-xs, 0.25rem);
}

.comment-count {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs, 0.25rem);
    color: var(--text-muted, #9ca3af);
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 500;
}

.comment-count i {
    color: var(--primary-green, #00c896);
}

.attachment-indicator {
    color: var(--text-muted, #9ca3af);
    font-size: var(--font-size-sm, 0.875rem);
}

/* 작성자 정보 */
.item-author {
    text-align: center;
    min-width: 80px;
}

.author-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs, 0.25rem);
}

.author-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--border-light, #e2e8f0);
    transition: var(--transition-fast, all 0.15s ease);
}

.author-info:hover .author-avatar {
    border-color: var(--primary-green, #00c896);
    transform: scale(1.1);
}

.author-info span {
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--text-secondary, #6b7280);
    font-weight: 500;
}

/* 날짜, 조회수, 추천수 */
.item-date,
.item-views,
.item-likes {
    text-align: center;
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--text-muted, #9ca3af);
    font-weight: 500;
    min-width: 60px;
}

.item-likes {
    cursor: pointer;
    transition: var(--transition-fast, all 0.15s ease);
    padding: var(--spacing-xs, 0.25rem);
    border-radius: 6px;
}

.item-likes:hover {
    background: rgba(0, 200, 150, 0.1);
    color: var(--primary-green, #00c896);
    transform: scale(1.05);
}

.item-likes i {
    margin-right: 2px;
}

/* =================================
   페이지네이션
   ================================= */

.pagination-container {
    margin-top: var(--spacing-xl, 2rem);
    display: flex;
    justify-content: center;
}

.pagination {
    display: flex;
    gap: var(--spacing-xs, 0.25rem);
    align-items: center;
    background: var(--bg-white, #ffffff);
    padding: var(--spacing-sm, 0.5rem);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--border-light, #e2e8f0);
}

.pagination-btn,
.pagination-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    color: var(--text-secondary, #6b7280);
    text-decoration: none;
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 600;
    transition: var(--transition-fast, all 0.15s ease);
    border: none;
    background: transparent;
}

.pagination-btn:hover,
.pagination-number:hover {
    background: var(--bg-lighter, #f7fafc);
    color: var(--text-primary, #1a1a1a);
    text-decoration: none;
    transform: translateY(-1px);
}

.pagination-number.current {
    background: var(--primary-green, #00c896);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 200, 150, 0.3);
}

.pagination-btn.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

.pagination-dots {
    padding: 0 var(--spacing-sm, 0.5rem);
    color: var(--text-muted, #9ca3af);
    font-weight: 600;
}

/* =================================
   빈 상태
   ================================= */

.empty-state {
    text-align: center;
    padding: var(--spacing-3xl, 4rem) var(--spacing-xl, 2rem);
    color: var(--text-muted, #9ca3af);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg, 1.5rem);
    color: var(--border-medium, #cbd5e0);
}

.empty-state h3 {
    font-size: var(--font-size-xl, 1.25rem);
    font-weight: 600;
    color: var(--text-secondary, #6b7280);
    margin-bottom: var(--spacing-sm, 0.5rem);
}

.empty-state p {
    margin-bottom: var(--spacing-lg, 1.5rem);
    color: var(--text-muted, #9ca3af);
}

/* =================================
   반응형 디자인
   ================================= */

@media (max-width: 1024px) {
    .freeboard-stats {
        gap: var(--spacing-lg, 1.5rem);
    }
    
    .stat-number {
        font-size: var(--font-size-xl, 1.25rem);
    }
    
    .list-header,
    .list-item {
        grid-template-columns: 1fr auto auto auto;
        gap: var(--spacing-md, 1rem);
    }
    
    .item-likes {
        display: none;
    }
    
    .header-item:last-child {
        display: none;
    }
}

@media (max-width: 768px) {
    .freeboard-container {
        padding: var(--spacing-lg, 1.5rem) 0;
    }
    
    .freeboard-header {
        padding: var(--spacing-xl, 2rem);
        margin-left: var(--spacing-sm, 0.5rem);
        margin-right: var(--spacing-sm, 0.5rem);
    }
    
    .freeboard-title {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: var(--spacing-md, 1rem);
    }
    
    .freeboard-title .icon {
        width: 56px;
        height: 56px;
        font-size: 1.5rem;
    }
    
    .title-content h1 {
        font-size: var(--font-size-2xl, 1.5rem);
    }
    
    .freeboard-stats {
        gap: var(--spacing-md, 1rem);
        flex-wrap: wrap;
    }
    
    .freeboard-controls {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md, 1rem);
        margin-left: var(--spacing-sm, 0.5rem);
        margin-right: var(--spacing-sm, 0.5rem);
    }
    
    .search-filters {
        min-width: auto;
    }
    
    .search-group {
        flex-direction: column;
        gap: var(--spacing-sm, 0.5rem);
    }
    
    .search-category {
        min-width: auto;
    }
    
    .search-input-wrapper {
        max-width: none;
    }
    
    .freeboard-actions {
        justify-content: center;
    }
    
    .freeboard-list {
        margin-left: var(--spacing-sm, 0.5rem);
        margin-right: var(--spacing-sm, 0.5rem);
    }
    
    .list-header,
    .list-item {
        grid-template-columns: 1fr auto auto;
        gap: var(--spacing-sm, 0.5rem);
        padding: var(--spacing-md, 1rem);
    }
    
    .item-views {
        display: none;
    }
    
    .header-item:nth-child(4) {
        display: none;
    }
    
    .author-info {
        flex-direction: row;
        justify-content: center;
    }
    
    .author-avatar {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 480px) {
    .freeboard-header {
        padding: var(--spacing-lg, 1.5rem);
    }
    
    .freeboard-title .icon {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
    
    .title-content h1 {
        font-size: var(--font-size-xl, 1.25rem);
    }
    
    .freeboard-stats {
        justify-content: space-around;
    }
    
    .stat-item {
        padding: var(--spacing-xs, 0.25rem);
    }
    
    .stat-number {
        font-size: var(--font-size-lg, 1.125rem);
    }
    
    .list-header,
    .list-item {
        grid-template-columns: 1fr auto;
        padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
    }
    
    .item-author {
        display: none;
    }
    
    .header-item:nth-child(2),
    .header-item:nth-child(3) {
        display: none;
    }
    
    .item-meta {
        margin-top: var(--spacing-sm, 0.5rem);
    }
    
    .pagination-btn,
    .pagination-number {
        width: 36px;
        height: 36px;
        font-size: 0.75rem;
    }
}

/* =================================
   접근성 및 사용성 개선
   ================================= */

/* 고대비 모드 지원 */
@media (prefers-contrast: high) {
    .freeboard-list,
    .freeboard-header {
        border-width: 2px;
    }
    
    .list-item:hover {
        border-left: 4px solid var(--primary-green, #00c896);
    }
}

/* 모션 감소 모드 */
@media (prefers-reduced-motion: reduce) {
    .list-item,
    .search-btn,
    .btn-primary,
    .btn-outline-secondary,
    .pagination-btn,
    .pagination-number,
    .item-likes,
    .author-avatar {
        transition: none !important;
        transform: none !important;
    }
    
    .freeboard-title .icon::after {
        display: none;
    }
}

/* 포커스 개선 */
.search-input:focus,
.search-category:focus,
.btn:focus,
.pagination-btn:focus,
.pagination-number:focus,
.item-title:focus {
    outline: 2px solid var(--primary-green, #00c896);
    outline-offset: 2px;
}

/* 로딩 상태 */
.loading-state {
    text-align: center;
    padding: var(--spacing-2xl, 2.5rem);
    color: var(--text-muted, #9ca3af);
}

.loading-spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-light, #e2e8f0);
    border-radius: 50%;
    border-top-color: var(--primary-green, #00c896);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}