:root {
    --brand-navy: #00264d;
    --brand-navy-dark: #001a36;
    --brand-green: #9ddd00; /* Lime */
    --brand-green-dim: rgba(191, 255, 0, 0.2);

    --bg-body: #00264d;
    --bg-panel: rgba(255, 255, 255, 0.05);
    --bg-header: radial-gradient(circle at top right, rgba(191, 255, 0, 0.05), transparent 40%);

    --text-main: #c9d1d9;
    --text-header: #ffffff;
    --text-muted: #8b949e;

    --border-color: rgba(191, 255, 0, 0.3);
    --input-bg: #161b22;

    --state-success: #a0ee00;
    --state-danger: #ff4d4d;

    --font-stack: 'Inter', sans-serif;
    --font-mono: 'Consolas', 'Monaco', monospace;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--font-stack);
    background: linear-gradient(180deg, var(--brand-navy) 0%, var(--brand-navy-dark) 100%);
    color: var(--text-main);
    font-size: 14px;
    line-height: 1.6;
    min-height: 100vh;
}

/* Layout Utilities */
header {
    background: var(--bg-header);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 {
    font-size: 1.5rem;
    margin: 0;
    font-weight: 800;
    color: var(--text-header);
    letter-spacing: -0.5px;
}
h1 span { color: var(--brand-green); }

h2 {
    font-size: 1.25rem;
    margin: 0;
    font-weight: 600;
    color: var(--text-header);
    border-left: 3px solid var(--brand-green);
    padding-left: 10px;
}

h3 { font-size: 1rem; margin: 0; font-weight: 600; color: var(--brand-green); }

/* Buttons */
button {
    cursor: pointer;
    padding: 6px 16px;
    border: 1px solid var(--border-color);
    background-color: rgba(255,255,255,0.05);
    color: var(--brand-green);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.2s ease;
}

button:hover {
    background-color: var(--brand-green-dim);
    box-shadow: 0 0 10px var(--brand-green-dim);
}

button.primary {
    background-color: var(--brand-green);
    color: var(--brand-navy-dark);
    border-color: var(--brand-green);
}

button.primary:hover {
    background-color: #d4ff59;
    opacity: 1;
}

button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    box-shadow: none;
}

/* Inputs & Selects */
input[type="text"],
input[type="number"],
select {
    padding: 6px 12px;
    border: 1px solid rgba(255,255,255,0.2);
    background-color: var(--input-bg);
    color: var(--text-header);
    border-radius: 4px;
    font-family: var(--font-stack);
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
    outline: none;
    border-color: var(--brand-green);
}

/* Main Content & Panels */
main { padding: 2rem; max-width: 1400px; margin: 0 auto; }

.panel {
    border: 1px solid rgba(255,255,255,0.1);
    background-color: var(--bg-panel);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.controls { display: flex; gap: 10px; }

/* Status Indicators */
.status-dot {
    height: 8px; width: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
    box-shadow: 0 0 5px currentColor;
}
.status-green { background-color: var(--state-success); color: var(--state-success); }
.status-red { background-color: var(--state-danger); color: var(--state-danger); }