:root {
    --iron-black: #1A1A1B;
    --authority-gold: #C5A023;
    --alert-red: #FF1744;
    --crypto-blue: #2979FF;
    --armor-gray: #2D2D2E;
    --text-light: #E0E0E0;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

body {
    background-color: var(--iron-black);
    color: var(--text-light);
    font-family: var(--font-main);
    overflow-x: hidden;
}

/* 重型裝甲質感 */
.armor-panel {
    background: linear-gradient(145deg, #232324, #151516);
    border: 1px solid #333;
    box-shadow: inset 0 0 15px rgba(0,0,0,0.5), 5px 5px 15px rgba(0,0,0,0.3);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.armor-panel::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--authority-gold), transparent);
    opacity: 0.5;
}

/* 導覽列樣式 */
.navbar {
    background-color: rgba(26, 26, 27, 0.95) !important;
    border-bottom: 2px solid var(--authority-gold);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--authority-gold) !important;
    text-transform: uppercase;
}

.nav-link {
    color: var(--text-light) !important;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    margin: 0 10px;
    transition: all 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--authority-gold) !important;
    text-shadow: 0 0 10px rgba(197, 160, 35, 0.5);
}

/* 按鈕樣式 */
.btn-vault {
    background-color: transparent;
    border: 1px solid var(--authority-gold);
    color: var(--authority-gold);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 10px 25px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-vault:hover {
    background-color: var(--authority-gold);
    color: var(--iron-black);
    box-shadow: 0 0 20px rgba(197, 160, 35, 0.4);
}

/* 標題樣式 */
h1, h2, h3, h4, h5 {
    color: var(--authority-gold);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-title {
    border-left: 4px solid var(--authority-gold);
    padding-left: 15px;
    margin-bottom: 30px;
}

/* 數據展示 */
.stat-value {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--authority-gold);
}

.stat-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: #888;
}

/* 頁腳 */
footer {
    background-color: #0D0D0E;
    border-top: 1px solid #333;
    padding: 50px 0;
    margin-top: 100px;
}

/* 機械紋理背景 */
.mech-bg {
    background-image: radial-gradient(circle at 2px 2px, rgba(197, 160, 35, 0.05) 1px, transparent 0);
    background-size: 40px 40px;
}

/* 響應式調整 */
@media (max-width: 768px) {
    .stat-value {
        font-size: 1.8rem;
    }
}