:root {
    --primary-color: #0000d1;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --error-color: #ef4444;
}

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

body {
    font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
    text-align: center;
}

header {
    margin-bottom: 30px;
}

header h1 {
    color: var(--text-color);
    font-size: 24px;
    font-weight: bold;
}

.subtitle {
    color: var(--text-muted);
    font-size: 14px;
}

.card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.card h2 {
    font-size: 20px;
    margin-bottom: 15px;
}

.card p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 25px;
}

.hidden {
    display: none;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-primary:hover {
    background-color: #0000a0;
}

.key-display {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

#license-key {
    background: #f9fafb;
    border: 1px dashed #d1d5db;
    padding: 15px;
    font-family: monospace;
    font-size: 18px;
    border-radius: 8px;
    color: var(--primary-color);
    word-break: break-all;
}

.btn-secondary {
    background-color: #e5e7eb;
    color: var(--text-color);
    border: none;
    padding: 8px 15px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
}

.btn-secondary:hover {
    background-color: #d1d5db;
}

.status-info {
    font-size: 13px;
    margin-bottom: 15px;
}

#auth-status {
    color: #059669;
    font-weight: bold;
}

.notice {
    font-size: 12px !important;
    margin-top: 10px;
}

.error-text {
    color: var(--error-color);
}

footer {
    margin-top: 30px;
    font-size: 12px;
    color: var(--text-muted);
}