/* ============================================
   雲隱・私邸 Cloud Haven Retreat
   設計語彙: 極致隱逸 × 親生物設計
   ============================================ */

/* 色彩系統 */
:root {
    --color-dark-slate: #1A1C1E;      /* 煙岩深黛 */
    --color-light-gray: #F5F5F7;      /* 雲霧淺灰 */
    --color-wood-brown: #967E5B;      /* 沈香木褐 */
    --color-stone-white: #FEFDFB;     /* 石灰白 */
    --color-mist-gray: #D4D4D8;       /* 霧灰 */
    --color-accent-light: #E8DCC8;    /* 淡褐色 */
    
    /* 字體 */
    --font-serif-display: 'Playfair Display', serif;
    --font-serif-body: 'Lora', serif;
    --font-sans: 'Poppins', sans-serif;
    --font-mono: 'Courier Prime', monospace;
    
    /* 間距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 5rem;
}

/* 全局樣式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-dark-slate);
    background-color: var(--color-light-gray);
    line-height: 1.8;
    letter-spacing: 0.3px;
}

/* 排版 */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif-display);
    font-weight: 600;
    letter-spacing: 0.5px;
}

h1 { font-size: 3.5rem; line-height: 1.2; }
h2 { font-size: 2.5rem; line-height: 1.3; }
h3 { font-size: 1.75rem; line-height: 1.4; }
h4 { font-size: 1.5rem; line-height: 1.4; }
h5 { font-size: 1.25rem; line-height: 1.5; }
h6 { font-size: 1rem; line-height: 1.5; }

p {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--color-wood-brown);
    text-decoration: none;
    transition: all 0.4s ease;
}

a:hover {
    color: var(--color-dark-slate);
    text-decoration: underline;
}

/* 按鈕樣式 */
.btn {
    font-family: var(--font-sans);
    font-weight: 600;
    border-radius: 4px;
    padding: 0.75rem 1.75rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--color-wood-brown);
    color: var(--color-stone-white);
}

.btn-primary:hover {
    background-color: #7d6a4a;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.btn-accent {
    background-color: var(--color-wood-brown);
    color: var(--color-stone-white);
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}

.btn-accent:hover {
    background-color: #7d6a4a;
}

.btn-link {
    color: var(--color-wood-brown);
    text-decoration: none;
    font-weight: 600;
}

.btn-link:hover {
    color: var(--color-dark-slate);
}

/* 導覽列 */
.navbar {
    background-color: var(--color-light-gray);
    border-bottom: 1px solid var(--color-mist-gray);
    transition: all 0.4s ease;
}

.navbar.scrolled {
    background-color: rgba(245, 245, 247, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.navbar-brand {
    font-family: var(--font-serif-display);
    font-size: 1.25rem;
    color: var(--color-dark-slate) !important;
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.brand-name {
    font-size: 1.1rem;
    font-weight: 700;
}

.brand-en {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-wood-brown);
    letter-spacing: 1px;
}

.navbar-nav .nav-link {
    color: var(--color-dark-slate) !important;
    font-weight: 500;
    margin-left: var(--spacing-lg);
    position: relative;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-wood-brown);
    transition: width 0.3s ease;
}

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

.btn-booking {
    background-color: var(--color-wood-brown) !important;
    color: var(--color-stone-white) !important;
    padding: 0.5rem 1.25rem !important;
    border-radius: 4px;
    margin-left: var(--spacing-md) !important;
}

/* 英雄區 */
.hero-section {
    height: 100vh;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 28, 30, 0.5) 0%, rgba(26, 28, 30, 0.3) 50%, rgba(26, 28, 30, 0.1) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: var(--spacing-3xl);
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: 4rem;
    color: var(--color-stone-white);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    letter-spacing: 2px;
}

.hero-subtitle {
    font-size: 1.75rem;
    color: var(--color-accent-light);
    margin-bottom: var(--spacing-lg);
    font-weight: 400;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-stone-white);
    max-width: 500px;
    line-height: 1.9;
    margin-bottom: var(--spacing-xl);
}

/* 浮動預約條 */
.floating-booking-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, var(--color-dark-slate), rgba(26, 28, 30, 0.95));
    padding: var(--spacing-md) 0;
    z-index: 999;
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.floating-booking-bar.show {
    transform: translateY(0);
}

.booking-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.booking-label {
    color: var(--color-stone-white);
    font-weight: 500;
}

/* 區塊標題 */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: 2.5rem;
    color: var(--color-dark-slate);
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-wood-brown), transparent);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-mist-gray);
    margin-top: var(--spacing-lg);
}

/* 精選邸館區塊 */
.estates-section {
    background-color: var(--color-light-gray);
    padding: var(--spacing-3xl) 0;
}

.estates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
    perspective: 1000px;
}

.estate-card {
    background-color: var(--color-stone-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    transform-style: preserve-3d;
}

.estate-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.estate-image {
    width: 100%;
    height: 250px;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}

.estate-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 28, 30, 0.2);
    transition: background 0.4s ease;
}

.estate-card:hover .estate-image::after {
    background: rgba(26, 28, 30, 0.4);
}

.estate-info {
    padding: var(--spacing-lg);
}

.estate-name {
    font-size: 1.5rem;
    color: var(--color-dark-slate);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-serif-display);
}

.estate-desc {
    font-size: 0.95rem;
    color: var(--color-mist-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.estate-price {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    color: var(--color-wood-brown);
    font-weight: 600;
}

/* 體驗敘事區塊 */
.experiences-section {
    background: linear-gradient(135deg, var(--color-light-gray) 0%, var(--color-stone-white) 100%);
    padding: var(--spacing-3xl) 0;
}

.experience-card {
    background-color: var(--color-stone-white);
    padding: var(--spacing-2xl);
    border-radius: 8px;
    border-left: 4px solid var(--color-wood-brown);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    transition: all 0.4s ease;
    text-align: center;
}

.experience-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.experience-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.experience-title {
    font-size: 1.25rem;
    color: var(--color-dark-slate);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-serif-display);
}

.experience-desc {
    font-size: 0.95rem;
    color: var(--color-mist-gray);
    line-height: 1.7;
}

/* 品牌主張區塊 */
.brand-statement {
    background-color: var(--color-dark-slate);
    color: var(--color-stone-white);
    padding: var(--spacing-3xl) 0;
}

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

.statement-text {
    font-size: 1.5rem;
    line-height: 2;
    margin-bottom: var(--spacing-lg);
    font-weight: 300;
    color: var(--color-accent-light);
}

/* 頁腳 */
.footer {
    background-color: var(--color-dark-slate);
    color: var(--color-stone-white);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-title {
    font-family: var(--font-serif-display);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.footer-text {
    color: var(--color-accent-light);
    font-size: 0.95rem;
}

.footer-subtitle {
    font-family: var(--font-serif-display);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-stone-white);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-accent-light);
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--color-wood-brown);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    color: var(--color-accent-light);
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: var(--color-wood-brown);
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.1);
    margin: var(--spacing-2xl) 0;
}

.footer-bottom {
    text-align: center;
    color: var(--color-mist-gray);
    font-size: 0.9rem;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero-content {
        padding: var(--spacing-xl);
    }
    
    .estates-grid {
        grid-template-columns: 1fr;
    }
    
    .navbar-nav .nav-link {
        margin-left: 0;
        padding: var(--spacing-sm) 0;
    }
    
    .booking-bar-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .booking-label {
        text-align: center;
    }
}

/* 過渡與動畫 */
.fade-in {
    animation: fadeIn 0.6s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-in-left {
    animation: slideInLeft 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}