/* 
   Abyss Core Marine Technology - Core Styles
   Theme: Deep-Sea Tech (W95 Professional)
*/

:root {
    --midnight-blue: #001219;
    --probe-cyan: #00E0FF;
    --titanium-gray: #4A4E69;
    --nav-green: #0A9396;
    --abyss-black: #000814;
    --data-white: #E9ECEF;
}

body {
    background-color: var(--midnight-blue);
    color: var(--data-white);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

.mono-font {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

/* 深海網格背景 */
.bg-grid {
    background-image: 
        linear-gradient(to right, rgba(0, 224, 255, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 224, 255, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* 螢光邊框效果 */
.border-cyan {
    border: 1px solid var(--probe-cyan);
    box-shadow: 0 0 15px rgba(0, 224, 255, 0.2);
}

.glow-text {
    text-shadow: 0 0 10px var(--probe-cyan);
}

/* 導航欄樣式 */
.navbar-abyss {
    background-color: rgba(0, 18, 25, 0.95);
    border-bottom: 1px solid var(--probe-cyan);
    backdrop-filter: blur(10px);
}

.navbar-abyss .nav-link {
    color: var(--data-white) !important;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.navbar-abyss .nav-link:hover {
    color: var(--probe-cyan) !important;
    text-shadow: 0 0 8px var(--probe-cyan);
}

.navbar-brand {
    font-weight: 800;
    color: var(--probe-cyan) !important;
}

/* 按鈕樣式 */
.btn-abyss {
    background: transparent;
    border: 1px solid var(--probe-cyan);
    color: var(--probe-cyan);
    border-radius: 0;
    padding: 10px 25px;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.btn-abyss:hover {
    background: var(--probe-cyan);
    color: var(--midnight-blue);
    box-shadow: 0 0 20px var(--probe-cyan);
}

/* 頁尾 */
footer {
    border-top: 1px solid var(--titanium-gray);
    padding: 50px 0;
    background-color: var(--abyss-black);
}

/* 動畫效果 */
@keyframes pulse-sonar {
    0% { transform: scale(0.5); opacity: 0; }
    50% { opacity: 0.5; }
    100% { transform: scale(2); opacity: 0; }
}

.sonar-wave {
    position: absolute;
    border: 1px solid var(--probe-cyan);
    border-radius: 50%;
    animation: pulse-sonar 3s infinite linear;
}