/* =========================================
   全域設定與色彩系統 (Color System)
   ========================================= */
:root {
    /* 主色系：#5B40E2 (使用者指定的紫色) */
    --primary: #5B40E2;
    --primary-light: #7963ED; /* 延伸淺色版：用於 hover 或背景 */
    --primary-dark: #4229B0;  /* 延伸深色版：用於 active 或強調文字 */
    
    /* 語意色彩 (Semantic Colors) */
    --success: #10B981; /* 成功（綠） */
    --error: #EF4444;   /* 錯誤（紅） */
    --warning: #F59E0B; /* 警告（黃） */
    
    /* 中性色 (Neutral Colors) */
    --bg-main: #f8f9fa;
    --bg-card: #ffffff;
    --text-dark: #1f2937; /* 符合 WCAG AA 對比度標準的深灰文字 */
    --text-muted: #6b7280;
    --border-color: #e5e7eb;

    /* 全局變數：維持視覺一致性 */
    --radius: 12px;
    --transition: 0.2s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    /* 字體設定：使用者指定的 Noto Sans TC */
    font-family: 'Noto Sans TC', sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-main);
    line-height: 1.7; /* 內文行高優化 1.6~1.8 */
    letter-spacing: 0.02em; /* 適度調整字距 */
}

/* =========================================
   排版層級 (Typography)
   ========================================= */
h1, h2, h3, h4 {
    font-weight: 700;
    color: var(--text-dark);
}

h1 { font-size: 2.5rem; line-height: 1.2; }
h2 { font-size: 2rem; margin-bottom: 2rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }

/* =========================================
   導覽列樣式 (Navbar)
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    flex-wrap: wrap; /* 手機版導覽列容錯 */
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary); /* 使用主色 */
}

.navbar nav {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.navbar a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color var(--transition); /* 微動畫：平滑過渡 */
}

.navbar a:hover {
    color: var(--primary);
}

/* =========================================
   歡迎區塊樣式 (Hero Section)
   ========================================= */
.hero-section {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(135deg, #f3f0ff 0%, #ffffff 100%);
    padding: 6rem 1.5rem 2rem;
}

.hero-content h1 {
    margin-bottom: 1rem;
    color: var(--primary-dark);
}

.hero-content p {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 按鈕樣式：主色按鈕 */
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 2rem;
    background-color: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: 500;
    transition: all var(--transition); /* 微動畫 */
}

.cta-button:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
}

/* =========================================
   精選場地區塊樣式 (Venues Section)
   ========================================= */
.venues-section {
    padding: 5rem 1.5rem;
    text-align: center;
}

.venue-container {
    display: grid;
    /* 手機優先佈局 (Mobile First)：單欄顯示 */
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.venue-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition), box-shadow var(--transition);
    text-align: left;
}

.venue-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(91, 64, 226, 0.1);
}

.venue-image {
    height: 200px;
    width: 100%;
}

.forest-bg { background-image: url('蘇卡利.jpg'); background-size: cover; background-position: center; }
.light-bg { background-image: url('芳庭路.jpg'); background-size: cover; background-position: center; }
.private-bg { background-image: url('豪邸嘉廬.jpg'); background-size: cover; background-position: center; }
.european-bg { background-image: url('維多麗亞酒店.jpg'); background-size: cover; background-position: center; }
.luxury-bg { background-image: url('芃卓.jpg'); background-size: cover; background-position: center; }

.venue-card h3 {
    margin: 1.5rem 1.5rem 0.5rem;
    color: var(--primary);
}

.venue-card p {
    padding: 0 1.5rem 1.5rem;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.venue-list {
    padding: 0 1.5rem 1.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.venue-details summary {
    font-size: 1rem;
    color: var(--primary);
    font-weight: 700;
    cursor: pointer;
    outline: none;
    transition: color var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.venue-details summary:hover {
    color: var(--primary-light);
}

.venue-list ul {
    list-style-type: none;
    margin-top: 1rem;
}

.venue-list li {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.venue-list li::before {
    content: "\f111"; /* Font Awesome circle 裝飾 */
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 0.4rem;
    color: var(--primary);
    position: absolute;
    left: 0.2rem;
    top: 0.4rem;
}

.location-badge {
    background-color: #f3f0ff; /* 淡色背景 */
    color: var(--primary-dark);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    margin-right: 0.5rem;
}

/* =========================================
   票選活動區塊樣式 (Voting Section)
   ========================================= */
.voting-section {
    padding: 5rem 1.5rem;
    background-color: #fbfaff;
    text-align: center;
}

.voting-description {
    max-width: 800px;
    margin: 0 auto 3rem auto;
    background-color: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
    text-align: left;
    border-left: 5px solid var(--primary);
}

.voting-description h3 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.voting-description p {
    color: var(--text-muted);
}

.voting-container {
    display: grid;
    /* 手機優先佈局 */
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.vote-card {
    background: var(--bg-card);
    padding: 2rem 1.5rem;
    border-radius: var(--radius);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    border-top: 5px solid var(--primary);
    transition: transform var(--transition);
}

.vote-card:hover {
    transform: translateY(-4px);
}

.vote-button {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    margin-bottom: 1rem;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.vote-button:hover {
    background-color: var(--primary);
    color: white;
}

.vote-count-display {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.vote-count-display span {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

/* =========================================
   聯絡表單區塊樣式 (Contact Section)
   ========================================= */
.contact-section {
    padding: 5rem 1.5rem;
    background-color: var(--bg-card);
    text-align: center;
}

.booking-form {
    max-width: 500px;
    margin: 0 auto;
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary); /* 焦點狀態邊框改為語意主色 */
}

.submit-button {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color var(--transition);
    font-family: inherit;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.submit-button:hover {
    background-color: var(--primary-light);
}

/* =========================================
   頁尾樣式 (Footer)
   ========================================= */
footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--text-dark);
    color: #9ca3af;
    font-size: 0.9rem;
}

/* =========================================
   響應式設計斷點 (Responsive Breakpoints)
   ========================================= */

/* 平板斷點 (Tablet: 768px 以上) */
@media (min-width: 768px) {
    .navbar {
        padding: 1rem 3rem;
    }
    .navbar nav {
        margin-top: 0;
        gap: 2rem;
    }
    .navbar a {
        font-size: 1rem;
    }
    
    h1 { font-size: 3rem; }
    .hero-content p { font-size: 1.2rem; }
    
    .venue-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .voting-container {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 桌機斷點 (Desktop: 1200px 以上) */
@media (min-width: 1200px) {
    h1 { font-size: 3.5rem; }
    
    .venue-container {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .voting-container {
        grid-template-columns: repeat(5, 1fr);
    }
}