:root {
    --bg-color: #1a1a1a;
    --card-bg: #2d2d2d;
    --text-color: #e0e0e0;
    --accent-color: #00ff9d;
    /* Laser Green */
    --input-bg: #404040;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}

.container {
    max-width: 800px;
    width: 100%;
}

h1 {
    color: var(--accent-color);
    text-align: center;
    margin-bottom: 30px;
}

.card {
    background-color: var(--card-bg);
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    margin-bottom: 24px;
}

h2 {
    margin-top: 0;
    font-size: 1.25rem;
    border-bottom: 1px solid #444;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

label {
    font-size: 0.9rem;
    color: #aaa;
}

input {
    background-color: var(--input-bg);
    border: 1px solid #555;
    color: white;
    padding: 10px;
    border-radius: 6px;
    font-size: 1rem;
}

input:focus {
    outline: none;
    border-color: var(--accent-color);
}

button {
    background-color: var(--accent-color);
    color: #000;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 20px;
    width: 100%;
    transition: opacity 0.2s;
}

button:hover {
    opacity: 0.9;
}

#status-log {
    font-family: monospace;
    padding: 10px;
    background: #000;
    border-radius: 4px;
}

/* Tabs */
.tab-nav {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.tab-btn {
    flex: 1;
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid #444;
    padding: 10px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    margin-top: 0;
    width: auto;
}

.tab-btn.active {
    background-color: var(--accent-color);
    color: #000;
    border-color: var(--accent-color);
}

.hidden {
    display: none !important;
}

/* Visualization */
.viz-container {
    background-color: #000;
    border-radius: 8px;
    width: 100%;
    aspect-ratio: 1 / 1;
    position: relative;
    overflow: hidden;
    border: 1px solid #333;
}

#climb-viz {
    width: 100%;
    height: 100%;
}

.viz-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #666;
    text-align: center;
}