/* ===== CSS 변수 - 밝은 베이지/종이색 테마 ===== */
:root {
    --primary-color: #8b6f47;
    --primary-hover: #6d5436;
    --background: #faf8f3;
    --surface: #ffffff;
    --surface-hover: #f5f1e8;
    --text-primary: #3d3026;
    --text-secondary: #6b5d4f;
    --text-muted: #9c8b7a;
    --border: #e8e3d8;
    --danger: #c85a54;
    --success: #6b9b6e;
    --warning: #d9a84e;

    --radius: 12px;
    --shadow: 0 2px 8px rgba(61, 48, 38, 0.08);
    --shadow-lg: 0 4px 20px rgba(61, 48, 38, 0.12);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 헤더 ===== */
.header {
    background: var(--surface);
    padding: 16px 0;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

/* ===== 주제 탭 네비게이션 ===== */
.topic-tabs-container {
    margin-bottom: 16px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.topic-tabs-container::-webkit-scrollbar {
    display: none;
}

.topic-tabs {
    display: flex;
    gap: 10px;
    padding: 4px 0;
    min-width: max-content;
}

.topic-tab {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 12px 20px;
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}

.topic-tab:hover {
    border-color: var(--primary-color);
    background: var(--surface-hover);
}

.topic-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* ===== 게시글 작성 폼 ===== */
.post-form-section {
    background: var(--surface);
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.post-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-row {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.form-select {
    background: var(--background);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 10px;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
    box-sizing: border-box;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--surface);
}

.form-textarea {
    background: var(--background);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 12px;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    min-height: 100px;
    transition: all 0.2s;
    width: 100%;
    box-sizing: border-box;
}

.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--surface);
}

.btn-submit {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    align-self: flex-end;
}

.btn-submit:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.write-toggle-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 14px 20px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.write-toggle-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn-cancel {
    background: var(--surface-hover);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-cancel:hover {
    background: var(--border);
}

/* ===== 컨트롤 바 (필터 & 정렬) ===== */
.controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
    padding: 0 4px;
}

.filters {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-select {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-select:hover,
.filter-select:focus {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--surface);
}

.sort {
    display: flex;
    gap: 4px;
    background: var(--border);
    padding: 2px;
    border-radius: 8px;
    margin-left: auto;
}

.sort-btn {
    background: transparent;
    color: var(--text-muted);
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.85rem;
    font-weight: 500;
}

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

.sort-btn.active {
    background: var(--surface);
    color: var(--primary-color);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* ===== 게시글 목록 섹션 (흰색 플레이트) ===== */
.posts-section {
    background: var(--surface);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    margin-bottom: 40px;
}

.posts-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.loading {
    text-align: center;
    padding: 60px 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ===== 게시글 카드 ===== */
.post-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all 0.2s;
    cursor: pointer;
}

.post-card:hover {
    border-color: var(--primary-color);
    background: var(--surface-hover);
    transform: translateY(-2px);
}

.post-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.post-meta-top {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    align-items: center;
}

.tag {
    background: var(--surface-hover);
    color: var(--text-secondary);
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border);
}

.post-author-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.nickname {
    color: var(--primary-color);
    font-weight: 600;
}

.post-time {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.post-content {
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: 1.7;
    font-size: 1.05rem;
}

.post-content.preview {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-clamp: 3;
}

.post-actions {
    display: flex;
    gap: 16px;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.action-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.2s;
    font-size: 0.9rem;
}

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

.action-btn.liked {
    color: var(--danger);
}

.action-btn.liked:hover {
    background: rgba(200, 90, 84, 0.1);
}

/* ===== 댓글 섹션 ===== */
.comments-section {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    background: var(--background);
    margin: 24px -24px -24px -24px;
    padding: 24px;
    border-bottom-left-radius: var(--radius);
    border-bottom-right-radius: var(--radius);
}

.comments-section h4 {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.comment-form {
    margin-bottom: 24px;
}

.comment-input {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 12px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    width: 100%;
    resize: vertical;
    min-height: 80px;
}

.comment-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.comment-item {
    background: var(--surface);
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 12px;
    border: 1px solid var(--border);
}

.comment-item.reply {
    margin-left: 24px;
    border-left: 3px solid var(--border);
    background: var(--surface);
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.comment-author {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
}

.comment-content {
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 8px;
    line-height: 1.6;
}

/* ===== 페이지네이션 ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.btn-page {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: var(--shadow);
    font-size: 0.9rem;
}

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

.btn-page:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

.page-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ===== 모달 ===== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(61, 48, 38, 0.4);
    backdrop-filter: blur(2px);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--surface);
    padding: 32px;
    border-radius: var(--radius);
    max-width: 360px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    position: relative;
    border: 1px solid var(--border);
}

.modal-close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.2s;
}

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

.modal-content h3 {
    margin-bottom: 20px;
    color: var(--text-primary);
    font-size: 1.2rem;
    text-align: center;
}

.modal-content form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.modal-content label {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.modal-content label:hover {
    background: var(--surface-hover);
    border-color: var(--primary-color);
}

.modal-content input[type="radio"] {
    accent-color: var(--primary-color);
}

/* ===== 반응형 ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .form-row {
        flex-wrap: wrap;
    }

    .controls-bar {
        flex-direction: row;
        flex-wrap: nowrap;
        gap: 8px;
    }

    .filters {
        flex: 1;
        gap: 6px;
    }

    .filter-select {
        flex: 1;
        min-width: 0;
        padding: 6px 8px;
        font-size: 0.8rem;
    }

    .sort {
        flex-shrink: 0;
    }

    .sort-btn {
        padding: 6px 10px;
        font-size: 0.75rem;
    }
}

/* ===== 삭제된 게시물 placeholder ===== */
.deleted-post {
    color: var(--text-muted);
    font-style: italic;
    padding: 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
}

/* ===== 무한스크롤 로딩 ===== */
.loading-more {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== Footer (AdSense용 미니멀 디자인) ===== */
.site-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 20px 0;
    margin-top: 60px;
    font-size: 0.85rem;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.footer-separator {
    color: var(--border);
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin: 0;
}

@media (max-width: 480px) {
    .footer-links {
        flex-direction: column;
        gap: 8px;
    }

    .footer-separator {
        display: none;
    }
}

/* ===== Site Intro Section (SEO/AdSense) ===== */
.site-intro {
    background: linear-gradient(135deg, rgba(139, 111, 71, 0.08) 0%, rgba(139, 111, 71, 0.04) 100%);
    border: 1px solid rgba(139, 111, 71, 0.2);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
    position: relative;
    transition: all 0.3s ease;
}

.site-intro.hidden {
    display: none;
}

.intro-close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: transparent;
    border: none;
    font-size: 24px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    line-height: 1;
    border-radius: 4px;
    transition: all 0.2s;
}

.intro-close:hover {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.05);
}

.site-intro h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 12px 0;
}

.site-intro>p {
    color: var(--text-secondary);
    margin: 0 0 16px 0;
    line-height: 1.6;
}

.intro-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
    list-style: none;
    padding: 0;
    margin: 0 0 16px 0;
}

.intro-features li {
    font-size: 0.9rem;
    color: var(--text-primary);
    background: var(--surface);
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
}

.intro-cta {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

.intro-cta a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.intro-cta a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .site-intro {
        padding: 20px;
    }

    .intro-features {
        gap: 6px 8px;
    }

    .intro-features li {
        font-size: 0.85rem;
        padding: 5px 10px;
    }
}