/* 
   Terroir Elite & Rare Wine Cellar Authority 
   Brand Identity & Luxury Aesthetic 
*/

:root {
    --burgundy: #4D0F1D;
    --oak-brown: #3D2B1F;
    --champagne-gold: #C5B358;
    --slate-gray: #2F2F2F;
    --text-light: #F5F5F5;
    --text-muted: #BDBDBD;
}

body {
    background-color: var(--burgundy);
    color: var(--text-light);
    font-family: 'Playfair Display', serif; /* 襯線體 */
    overflow-x: hidden;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--champagne-gold);
    font-weight: 700;
    letter-spacing: 1px;
}

.signature-font {
    font-family: 'Dancing Script', cursive; /* 手寫體 */
}

/* 動態掛杯導航效果 Legs Interaction */
.navbar {
    background-color: rgba(61, 43, 31, 0.95);
    border-bottom: 1px solid var(--champagne-gold);
    transition: all 0.3s ease;
}

.nav-link {
    color: var(--text-light) !important;
    position: relative;
    padding: 10px 15px;
    margin: 0 5px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 2px;
    height: 0;
    background: linear-gradient(to bottom, var(--champagne-gold), transparent);
    transition: height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
    opacity: 0.6;
}

.nav-link:hover::after {
    height: 30px; /* 掛杯下滴效果 */
}

/* 通用卡片設計 */
.wine-card {
    background-color: var(--oak-brown);
    border: 1px solid var(--champagne-gold);
    border-radius: 0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

.wine-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

/* 橡木桶紋理背景 */
.oak-texture {
    background-image: url('https://www.transparenttextures.com/patterns/wood-pattern.png');
    background-blend-mode: overlay;
}

/* 沉澱物微粒動畫 */
@keyframes particles {
    0% { transform: translateY(0) rotate(0deg); opacity: 0; }
    50% { opacity: 0.5; }
    100% { transform: translateY(-100vh) rotate(360deg); opacity: 0; }
}

.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    background: var(--champagne-gold);
    border-radius: 50%;
    opacity: 0;
    animation: particles 15s linear infinite;
}

/* 按鈕振動效果 */
.btn-cork {
    background-color: var(--champagne-gold);
    color: var(--burgundy);
    border: none;
    border-radius: 0;
    font-weight: bold;
    text-transform: uppercase;
    padding: 12px 30px;
    transition: all 0.2s ease;
}

.btn-cork:hover {
    background-color: #d4c575;
    animation: cork-vibrate 0.1s linear infinite;
}

@keyframes cork-vibrate {
    0% { transform: translate(0, 0); }
    25% { transform: translate(1px, 1px); }
    50% { transform: translate(-1px, 0); }
    75% { transform: translate(0, -1px); }
    100% { transform: translate(0, 0); }
}

/* 頁面切換過渡 */
.page-fade {
    animation: fadeIn 1s ease-in;
}

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