:root {
    --bg-primary: #111111;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #242424;

    --neon-green: #39ff14;
    --neon-green-dim: rgba(57, 255, 20, 0.3);
    --neon-green-glow: rgba(57, 255, 20, 0.15);

    --text-primary: #d8d8d8;
    --text-secondary: #888888;

    --error: #ff4444;

    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'JetBrains Mono', monospace;

    --radius-sm: 4px;
    --radius-md: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.borg-cube-watermark {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    opacity: 0.06;
    pointer-events: none;
    z-index: 0;
}

.logo {
    position: fixed;
    top: 24px;
    left: 24px;
    width: 48px;
    height: 48px;
    z-index: 10;
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 400px;
    padding: 0 24px;
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 32px;
}

.login-card h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--neon-green);
    margin-bottom: 8px;
}

.tagline {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font-sans);
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus {
    border-color: var(--neon-green);
}

.form-group input::placeholder {
    color: var(--text-secondary);
    opacity: 0.5;
}

.submit-btn {
    width: 100%;
    padding: 10px;
    background: var(--neon-green);
    color: var(--bg-primary);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: opacity 0.2s;
}

.submit-btn:hover {
    opacity: 0.9;
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.success-message {
    display: none;
    text-align: center;
    padding: 16px 0;
}

.success-message .icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.success-message h2 {
    font-size: 16px;
    color: var(--neon-green);
    margin-bottom: 8px;
}

.success-message p {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.5;
}

.error-message {
    display: none;
    color: var(--error);
    font-size: 12px;
    margin-top: 8px;
}

.show {
    display: block;
}

.hide {
    display: none;
}