:root {
    --bg-color: #0a0a0f;
    --panel-bg: #12121a;
    --neon-cyan: #00f3ff;
    --neon-green: #39ff14;
    --neon-amber: #ffb703;
    --text-color: #e2e2ec;
    --border-glow: 0 0 8px rgba(0, 243, 255, 0.3);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Courier New', Courier, monospace;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* CRT Scanline effect */
.crt-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
    background-size: 100% 4px, 6px 100%;
    z-index: 999;
    pointer-events: none;
}

.system-hud {
    background-color: var(--panel-bg);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    border-bottom: 2px solid var(--neon-cyan);
    box-shadow: var(--border-glow);
}

.logo {
    color: var(--neon-cyan);
    font-weight: bold;
    text-shadow: 0 0 5px var(--neon-cyan);
}

.bank {
    color: var(--neon-green);
    text-shadow: 0 0 5px var(--neon-green);
}

.grid-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1fr;
    gap: 20px;
    padding: 20px;
    flex-grow: 1;
    height: calc(100vh - 60px);
}

.panel-box {
    background-color: var(--panel-bg);
    border: 1px solid #222233;
    padding: 20px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.panel-box h2 {
    font-size: 1.1rem;
    color: var(--neon-cyan);
    margin-bottom: 15px;
    border-bottom: 1px solid #222233;
    padding-bottom: 5px;
}

/* Buttons */
.btn-mine, .btn-buy {
    background: transparent;
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    padding: 12px;
    margin-bottom: 10px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.2s ease;
}

.btn-mine:hover, .btn-buy:hover {
    background-color: var(--neon-cyan);
    color: var(--bg-color);
    box-shadow: 0 0 10px var(--neon-cyan);
}

.upgrade-card {
    border: 1px solid #222233;
    padding: 15px;
    margin-bottom: 15px;
    background: rgba(255,255,255,0.02);
}

.upgrade-card h3 {
    color: var(--neon-amber);
    margin-bottom: 5px;
}

.upgrade-card p {
    font-size: 0.85rem;
    margin-bottom: 8px;
    color: #8a8a9a;
}

.terminal-log {
    flex-grow: 1;
    background: #050508;
    border: 1px solid #1a1a26;
    padding: 10px;
    font-size: 0.85rem;
    color: #7a7a8a;
    overflow-y: auto;
}

hr {
    border: 0;
    border-top: 1px solid #222233;
    margin: 15px 0;
}