/* Aeon Vault - Global Styles */
:root {
    --primary-white: #FFFFFF;
    --accent-gold: #D4AF37;
    --deep-gray: #2C2C2C;
    --pulse-blue: #E0F7FA;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
}

body {
    background-color: var(--primary-white);
    color: var(--deep-gray);
    font-family: 'Montserrat', 'Noto Sans TC', sans-serif;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

h1, h2, h3, .serif-font {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
}

/* 導覽列樣式 */
.navbar {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-family: 'Playfair Display', serif;
    font-weight: bold;
    color: var(--accent-gold) !important;
    letter-spacing: 1px;
}

.nav-link {
    color: var(--deep-gray) !important;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
    margin: 0 10px;
}

.nav-link:hover {
    color: var(--accent-gold) !important;
}

/* 按鈕樣式 */
.btn-gold {
    background: var(--accent-gold);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 0;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-gold:hover {
    background: #b8860b;
    color: white;
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

.btn-outline-gold {
    border: 1px solid var(--accent-gold);
    color: var(--accent-gold);
    border-radius: 0;
    padding: 12px 30px;
    transition: all 0.3s ease;
}

.btn-outline-gold:hover {
    background: var(--accent-gold);
    color: white;
}

/* 指紋識別按鈕特效 */
.btn-biometric {
    position: relative;
}
.btn-biometric::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(224, 247, 250, 0.4);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}
.btn-biometric:active::after {
    width: 200px;
    height: 200px;
}

/* 光脈衝掃描 UI 交互 */
.asset-card {
    background: white;
    border: 1px solid rgba(0,0,0,0.05);
    transition: all 0.5s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.asset-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.asset-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border: 2px solid var(--pulse-blue);
    opacity: 0;
    transition: all 0.3s ease;
}

.asset-card:hover::before {
    animation: pulse-scan 1.5s infinite;
}

@keyframes pulse-scan {
    0% { transform: scale(0.95); opacity: 0; }
    50% { opacity: 0.5; }
    100% { transform: scale(1.05); opacity: 0; }
}

/* DNA 雙螺旋背景動畫 (Canvas) */
#dna-bg {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: -1;
    opacity: 0.05;
}

/* 通用區段間距 */
section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--deep-gray);
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    width: 50px; height: 2px;
    background: var(--accent-gold);
    transform: translateX(-50%);
}

/* 頁尾 */
footer {
    background: #f9f9f9;
    padding: 60px 0;
    border-top: 1px solid #eee;
}