:root {
    --postal-green: #1B5E20;
    --treasury-yellow: #FFD600;
    --tech-white: #F5F5F5;
    --upu-blue: #0288D1;
    --dark-bg: #121212;
    --card-bg: #1E1E1E;
    --text-muted: #B0B0B0;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: 1px;
}

.navbar {
    background-color: rgba(27, 94, 32, 0.95) !important;
    border-bottom: 2px solid var(--treasury-yellow);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 900;
    color: var(--treasury-yellow) !important;
    text-transform: uppercase;
}

.nav-link {
    color: var(--tech-white) !important;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover, .nav-link.active {
    color: var(--treasury-yellow) !important;
}

.btn-postal {
    background-color: var(--postal-green);
    color: var(--tech-white);
    border: 1px solid var(--treasury-yellow);
    border-radius: 0;
    padding: 10px 25px;
    font-weight: bold;
    transition: all 0.3s;
}

.btn-postal:hover {
    background-color: var(--treasury-yellow);
    color: var(--postal-green);
}

.card-sovereign {
    background-color: var(--card-bg);
    border: 1px solid rgba(255, 214, 0, 0.1);
    border-radius: 0;
    transition: transform 0.3s, border-color 0.3s;
}

.card-sovereign:hover {
    transform: translateY(-5px);
    border-color: var(--treasury-yellow);
}

.footer {
    background-color: #0a0a0a;
    border-top: 4px solid var(--postal-green);
    padding: 50px 0;
    margin-top: 100px;
}

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

.text-yellow {
    color: var(--treasury-yellow);
}

.text-green {
    color: var(--postal-green);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--dark-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--postal-green);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--treasury-yellow);
}