:root {
    --primary-bg: #263238; /* 鋼鐵意志灰 */
    --accent-blue: #00E5FF; /* 電脈衝螢光藍 */
    --accent-red: #FF1744; /* 肌纖維活紅 */
    --neutral-white: #ECEFF1; /* 生理平衡白 */
    --dark-overlay: rgba(38, 50, 56, 0.85);
}

body {
    background-color: var(--primary-bg);
    color: var(--neutral-white);
    font-family: 'Inter', 'Noto Sans TC', sans-serif;
    overflow-x: hidden;
}

.mono-font {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
}

/* 導覽列樣式 */
.navbar {
    background-color: rgba(38, 50, 56, 0.95);
    border-bottom: 1px solid var(--accent-blue);
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.navbar-brand {
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--accent-blue) !important;
}

.nav-link {
    color: var(--neutral-white) !important;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent-blue) !important;
    text-shadow: 0 0 10px var(--accent-blue);
}

/* 按鈕樣式 */
.btn-kinetic {
    background: transparent;
    border: 1px solid var(--accent-blue);
    color: var(--accent-blue);
    border-radius: 0;
    padding: 10px 25px;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: inline-block;
}

.btn-kinetic:hover {
    background: var(--accent-blue);
    color: var(--primary-bg);
    box-shadow: 0 0 20px var(--accent-blue);
}

/* 卡片樣式 */
.kinetic-card {
    background: rgba(255, 255, 255, 0.05);
    border-left: 4px solid var(--accent-blue);
    padding: 20px;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.kinetic-card:hover {
    transform: translateX(10px);
    background: rgba(255, 255, 255, 0.08);
}

/* 科技感裝飾 */
.tech-border {
    position: relative;
    border: 1px solid rgba(0, 229, 255, 0.3);
    padding: 20px;
}

.tech-border::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--accent-blue);
    border-left: 2px solid var(--accent-blue);
}

.tech-border::after {
    content: '';
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 10px;
    height: 10px;
    border-bottom: 2px solid var(--accent-blue);
    border-right: 2px solid var(--accent-blue);
}

/* 頁尾 */
footer {
    background: #1a2327;
    padding: 50px 0;
    border-top: 1px solid rgba(0, 229, 255, 0.2);
}

.section-title {
    font-weight: 900;
    text-transform: uppercase;
    margin-bottom: 40px;
    border-bottom: 2px solid var(--accent-blue);
    display: inline-block;
    padding-bottom: 10px;
}

/* 動畫 */
@keyframes pulse-blue {
    0% { box-shadow: 0 0 0 0 rgba(0, 225, 255, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(0, 225, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 225, 255, 0); }
}

.pulse {
    animation: pulse-blue 2s infinite;
}

.data-value {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-blue);
    font-weight: bold;
}

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at center, #2c3e50 0%, #263238 100%);
    position: relative;
}

.canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.4;
}