/* ========================================
   醇金窖藏・橡木之魂 - 全站樣式系統
   設計語彙：莊園古典 (Manor Classic)
   品牌主張：投資土地的靈魂，收穫時間的香氣
   ======================================== */

:root {
    /* 核心色系 */
    --color-bordeaux-red: #4A0E0E;          /* 波爾多酒紅 */
    --color-cellar-bronze: #8E735B;         /* 窖藏古銅 */
    --color-parchment: #F5F5DC;             /* 熟成羊皮紙 */
    --color-deep-burgundy: #2D0A0A;         /* 深層勃艮第 */
    --color-oak-brown: #6B5344;             /* 橡木棕 */
    --color-cream-white: #FEFBF7;           /* 奶油白 */
    
    /* 文字色系 */
    --color-text-primary: #2D2D2D;
    --color-text-secondary: #666666;
    --color-text-light: #999999;
    
    /* 邊框與背景 */
    --color-border: #D4C5B9;
    --color-border-light: #E8DFD5;
    --color-background: #FEFBF7;
    
    /* 強調色 */
    --color-accent-gold: #C9A961;
    --color-accent-copper: #B8860B;
    
    /* 陰影 */
    --shadow-sm: 0 2px 8px rgba(74, 14, 14, 0.08);
    --shadow-md: 0 4px 16px rgba(74, 14, 14, 0.12);
    --shadow-lg: 0 8px 24px rgba(74, 14, 14, 0.15);
    --shadow-xl: 0 12px 32px rgba(74, 14, 14, 0.2);
    
    /* 間距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Georgia', 'Garamond', serif;
    background-color: var(--color-background);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ========================================
   排版系統
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: 'Georgia', 'Garamond', serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-bordeaux-red);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -1px;
}

h2 {
    font-size: 2.5rem;
    letter-spacing: -0.5px;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: 1rem;
}

a {
    color: var(--color-bordeaux-red);
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--color-accent-gold);
    text-decoration: underline;
}

/* ========================================
   導覽列
   ======================================== */

.navbar {
    background: linear-gradient(135deg, var(--color-parchment) 0%, var(--color-cream-white) 100%);
    border-bottom: 2px solid var(--color-border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-bordeaux-red);
    font-family: 'Georgia', serif;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.navbar-brand:hover {
    color: var(--color-accent-gold);
    text-decoration: none;
}

.navbar-brand i {
    margin-right: 0.5rem;
    color: var(--color-accent-gold);
}

.navbar-nav {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--color-text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: all 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent-gold);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--color-bordeaux-red);
}

/* ========================================
   Hero Section
   ======================================== */

.hero-section {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(74, 14, 14, 0.7), rgba(45, 10, 10, 0.8));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-parchment);
    max-width: 800px;
    padding: var(--spacing-xl);
}

.hero-content h1 {
    color: var(--color-parchment);
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
}

.hero-content p {
    color: var(--color-parchment);
    font-size: 1.25rem;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}

/* 動畫 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.8s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-slide-in-up {
    animation: slideInUp 0.8s ease-out;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-scale-in {
    animation: scaleIn 0.6s ease-out;
}

/* ========================================
   Section 樣式
   ======================================== */

.section {
    padding: var(--spacing-2xl) 0;
    position: relative;
}

.section-light {
    background-color: var(--color-parchment);
}

.section-dark {
    background: linear-gradient(135deg, var(--color-bordeaux-red), var(--color-deep-burgundy));
    color: var(--color-parchment);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
    color: var(--color-parchment);
}

.section-dark p {
    color: rgba(245, 245, 220, 0.9);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ========================================
   卡片樣式
   ======================================== */

.card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--color-accent-gold);
}

.card-body {
    padding: 0;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-bordeaux-red);
    margin-bottom: var(--spacing-sm);
}

.card-text {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* ========================================
   按鈕樣式
   ======================================== */

.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border: none;
    border-radius: 4px;
    font-family: 'Georgia', serif;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    text-align: center;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-bordeaux-red), var(--color-deep-burgundy));
    color: var(--color-parchment);
    border: 2px solid var(--color-bordeaux-red);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-deep-burgundy), var(--color-bordeaux-red));
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-bordeaux-red);
    border: 2px solid var(--color-bordeaux-red);
}

.btn-secondary:hover {
    background: var(--color-bordeaux-red);
    color: var(--color-parchment);
}

.btn-accent {
    background: var(--color-accent-gold);
    color: white;
    border: 2px solid var(--color-accent-gold);
}

.btn-accent:hover {
    background: var(--color-accent-copper);
    border-color: var(--color-accent-copper);
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.9rem;
}

/* 紅酒漬效果 */
.btn-wine-stain {
    position: relative;
    overflow: hidden;
}

.btn-wine-stain::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left 0.3s ease;
}

.btn-wine-stain:hover::before {
    left: 100%;
}

/* ========================================
   表單樣式
   ======================================== */

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-bordeaux-red);
    font-size: 0.95rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: 'Georgia', serif;
    font-size: 1rem;
    background: white;
    color: var(--color-text-primary);
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent-gold);
    box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.1);
}

.form-check {
    margin-bottom: var(--spacing-sm);
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    border: 1px solid var(--color-border);
    border-radius: 3px;
    cursor: pointer;
    accent-color: var(--color-bordeaux-red);
}

.form-check-label {
    margin-left: 0.5rem;
    cursor: pointer;
    color: var(--color-text-secondary);
}

/* ========================================
   頁尾
   ======================================== */

.footer {
    background: linear-gradient(135deg, var(--color-deep-burgundy), var(--color-bordeaux-red));
    color: var(--color-parchment);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    border-top: 2px solid var(--color-accent-gold);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    color: var(--color-accent-gold);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.footer-section p {
    color: rgba(245, 245, 220, 0.8);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.footer-section a {
    color: var(--color-parchment);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--color-accent-gold);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(245, 245, 220, 0.2);
    color: rgba(245, 245, 220, 0.7);
    font-size: 0.9rem;
}

/* ========================================
   Grid 系統
   ======================================== */

.row {
    display: grid;
    gap: var(--spacing-lg);
}

.row-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.row-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.row-4 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.col {
    display: flex;
    flex-direction: column;
}

/* ========================================
   紙張紋理效果
   ======================================== */

.paper-texture {
    position: relative;
    background-image: 
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.02) 2px,
            rgba(0, 0, 0, 0.02) 4px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.02) 2px,
            rgba(0, 0, 0, 0.02) 4px
        );
}

/* ========================================
   響應式設計
   ======================================== */

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .hero-section {
        min-height: 400px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .navbar-nav {
        gap: var(--spacing-md);
        font-size: 0.9rem;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

    .row-2,
    .row-3,
    .row-4 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .btn {
        padding: 0.6rem 1.25rem;
        font-size: 0.9rem;
    }

    .hero-content {
        padding: var(--spacing-lg);
    }
}