:root {
    --bg: #0f0f0f;
    --surface: #1a1a1a;
    --border: #2a2a2a;
    --text-primary: #f0f0f0;
    --text-muted: #888;
    --accent: #e8c547;
    --accent-hover: #f0d060;
    --danger: #e05555;
    --success: #4caf7d;
}

body {
    font-family: 'IBM Plex Sans', sans-serif;
    background-color: var(--bg);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
    text-align: center;
}

header h1 {
    color: var(--accent);
    margin-bottom: 10px;
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.features {
    display: flex;
    gap: 20px;
    margin-bottom: 50px;
    justify-content: center;
}

.feature-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    flex: 1;
}

.feature-card h3 {
    margin-top: 0;
}

.pricing {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 20px;
    align-items: stretch;
}

.pricing-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 30px 20px;
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card.best-value {
    border-color: var(--accent);
    transform: scale(1.05);
    z-index: 1;
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent);
    color: var(--bg);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: bold;
}

.price {
    font-size: 2rem;
    font-weight: bold;
    margin: 15px 0;
}

.price span {
    font-size: 1rem;
    color: var(--text-muted);
}

.device-note {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: auto;
    margin-bottom: 20px;
}

button {
    background-color: var(--accent);
    color: var(--bg);
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s;
    width: 100%;
}

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

.multiple-devices-note {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 10;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
}

.modal-content {
    background-color: var(--surface);
    margin: 10% auto;
    padding: 30px;
    border: 1px solid var(--border);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    text-align: left;
    position: relative;
}

.close-btn {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-muted);
}

.close-btn:hover {
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 10px;
    background-color: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 4px;
    box-sizing: border-box;
}

.error-msg {
    color: var(--danger);
    font-size: 0.9rem;
    margin-top: 10px;
}

.instructions-box {
    background-color: var(--bg);
    padding: 20px;
    border-radius: 4px;
    border: 1px solid var(--border);
    margin: 20px 0;
}

.ref-code {
    font-family: monospace;
    font-size: 1.2rem;
    color: var(--accent);
}