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

:root {
    --primary-color: #2563eb;
    --secondary-color: #3b82f6;
    --text-dark: #1f2937;
    --text-gray: #6b7280;
    --border-color: #e5e7eb;
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 헤더 ===== */
.header {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    color: white;
    padding: 60px 20px;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.header-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-slogan {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #fef3c7;
}

.header-subtitle {
    font-size: 1rem;
    opacity: 0.95;
    font-weight: 400;
}

/* ===== 검색 & 필터 섹션 ===== */
.search-section {
    background-color: var(--bg-white);
    padding: 30px 0;
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.search-box {
    max-width: 600px;
    margin: 0 auto 25px;
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i.fa-search {
    position: absolute;
    left: 20px;
    color: var(--text-gray);
    font-size: 1.1rem;
}

#searchInput {
    width: 100%;
    padding: 16px 50px 16px 50px;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    outline: none;
    transition: var(--transition);
    background-color: var(--bg-white);
}

#searchInput:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.clear-btn {
    position: absolute;
    right: 15px;
    background: none;
    border: none;
    color: var(--text-gray);
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

/* ===== 카테고리 필터 ===== */
.category-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
}

.category-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    font-size: 0.95rem;
    font-weight: 500;
    border: 2px solid var(--border-color);
    border-radius: 25px;
    background-color: var(--bg-white);
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.category-btn:hover {
    background-color: var(--bg-light);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.category-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.category-btn i {
    font-size: 1.1rem;
}

/* ===== 결과 카운터 ===== */
.results-info {
    text-align: center;
    font-size: 1rem;
    color: var(--text-gray);
    font-weight: 500;
}

/* ===== 메인 콘텐츠 ===== */
.main-content {
    padding: 40px 0 80px;
    background-color: var(--bg-white);
}

.promises-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* ===== 공약 아이템 (아코디언) ===== */
.promise-item {
    background-color: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.promise-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.promise-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 25px;
    cursor: pointer;
    background-color: var(--bg-white);
    transition: var(--transition);
}

.promise-header:hover {
    background-color: var(--bg-light);
}

.promise-item.active .promise-header {
    background-color: var(--bg-light);
    border-bottom: 2px solid var(--border-color);
}

.promise-header-left {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 15px;
}

.category-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 20px;
    color: white;
    white-space: nowrap;
}

.promise-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-dark);
}

.toggle-icon {
    font-size: 1.2rem;
    color: var(--text-gray);
    transition: transform 0.3s ease;
}

.promise-item.active .toggle-icon {
    transform: rotate(180deg);
}

/* ===== 공약 본문 ===== */
.promise-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.promise-item.active .promise-body {
    max-height: 1000px;
}

.promise-content {
    padding: 25px;
    background-color: var(--bg-white);
}

.promise-description {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.promise-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}

.meta-item i {
    color: var(--primary-color);
    font-size: 1rem;
}

.meta-label {
    font-weight: 600;
    color: var(--text-gray);
}

.meta-value {
    color: var(--text-dark);
    font-weight: 500;
}

/* ===== 로딩 & 메시지 ===== */
.loading,
.no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-gray);
}

.loading i,
.no-results i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

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

@keyframes spin {
    100% { transform: rotate(360deg); }
}

.no-results h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.no-results p {
    font-size: 1rem;
}

/* ===== 스크롤 투 탑 버튼 ===== */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-5px);
}

/* ===== 푸터 ===== */
.footer {
    background-color: var(--text-dark);
    color: white;
    text-align: center;
    padding: 30px 20px;
}

.footer p {
    margin: 5px 0;
}

.footer-note {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ===== 카테고리별 색상 ===== */
.category-badge.citizen { background-color: #3b82f6; }
.category-badge.education { background-color: #8b5cf6; }
.category-badge.environment { background-color: #10b981; }
.category-badge.economy { background-color: #f59e0b; }
.category-badge.garden { background-color: #14b8a6; }
.category-badge.welfare { background-color: #ec4899; }
.category-badge.administration { background-color: #6366f1; }
.category-badge.culture { background-color: #a855f7; }
.category-badge.road { background-color: #ef4444; }
.category-badge.job { background-color: #06b6d4; }
.category-badge.etc { background-color: #f97316; }
.category-badge.hot { background-color: #dc2626; }

/* ===== 반응형 디자인 ===== */
@media (max-width: 768px) {
    .header-title {
        font-size: 1.8rem;
    }

    .header-slogan {
        font-size: 1.3rem;
    }

    .header-subtitle {
        font-size: 0.9rem;
    }

    .category-filter {
        gap: 8px;
    }

    .category-btn {
        padding: 10px 15px;
        font-size: 0.85rem;
    }

    .category-btn span {
        display: none;
    }

    .category-btn i {
        font-size: 1.2rem;
    }

    .promise-header-left {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .promise-title {
        font-size: 1rem;
    }

    .promise-meta {
        flex-direction: column;
        gap: 10px;
    }

    .scroll-top-btn {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 40px 15px;
    }

    .header-title {
        font-size: 1.5rem;
    }

    .header-slogan {
        font-size: 1.1rem;
    }

    #searchInput {
        font-size: 0.9rem;
        padding: 14px 45px 14px 45px;
    }

    .promise-header {
        padding: 15px 20px;
    }

    .promise-content {
        padding: 20px;
    }

    .category-btn {
        padding: 8px 12px;
    }
}