:root {
    --bg-base: #0a0a0a;
    --bg-surface: #141414;
    --border-color: #2a2a2a;
    --color-text: #e0e0e0;
    --color-text-dim: #666666;
    --color-accent: #00e5ff; /* Cyan */
    --color-danger: #ff3366;
    --font-ui: "Inter", sans-serif;
    --font-mono: "JetBrains Mono", monospace;
}

body {
    background-color: var(--bg-base);
    color: var(--color-text);
    font-family: var(--font-ui);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}

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

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 30px;
}

h1 {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin: 0;
}

h1 span {
    color: var(--color-text-dim);
    font-weight: 400;
}

.status {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 4px 10px;
    border-radius: 4px;
    border: 1px solid;
}

.status.online {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: rgba(0, 229, 255, 0.1);
}

.status.offline {
    color: var(--color-danger);
    border-color: var(--color-danger);
    background: rgba(255, 51, 102, 0.1);
}

/* Typography for Sections */
h3 {
    font-size: 0.85rem;
    color: var(--color-text-dim);
    letter-spacing: 1.5px;
    margin: 0 0 15px 0;
}

/* Telemetry Grid */
.telemetry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 4px;
}

.value {
    font-family: var(--font-mono);
    font-size: 2rem;
    color: var(--color-text);
}

.unit {
    font-size: 1rem;
    color: var(--color-text-dim);
}

/* Command Panel */
.command-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 4px;
    margin-bottom: 30px;
}

.btn-group {
    display: flex;
    gap: 10px;
}

button {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--border-color);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    padding: 12px 24px;
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: 2px;
}

button:hover {
    background: var(--border-color);
}

#btn-on:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* History Panel */
.history-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 4px;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.75rem;
}

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
    margin-top: 20px;
}