:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --danger: #ef4444;
    --danger-dark: #dc2626;
    --bg: #0f172a;
    --card-bg: #1e293b;
    --card-border: #334155;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --success: #10b981;
    --radius: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
}

.container { width: 100%; max-width: 480px; padding: 1rem; }

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.header { text-align: center; margin-bottom: 2rem; }
.header h1 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.subtitle { color: var(--text-muted); font-size: 0.875rem; }

.hidden { display: none !important; }

.loading { text-align: center; padding: 2rem; }
.spinner {
    width: 32px; height: 32px; margin: 0 auto 1rem;
    border: 3px solid var(--card-border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.user-info {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.75rem 1rem; background: rgba(99, 102, 241, 0.1);
    border-radius: 8px; margin-bottom: 1.5rem;
}

.label { color: var(--text-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; }
.value { font-weight: 600; }

.key-section { margin-bottom: 1.5rem; }
.key-section .label { display: block; margin-bottom: 0.5rem; }

.key-display {
    display: flex; align-items: center; gap: 0.5rem;
    background: #0f172a; border: 1px solid var(--card-border);
    border-radius: 8px; padding: 0.75rem 1rem;
}
.key-display code {
    flex: 1; font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.9rem; word-break: break-all;
}
.key-actions { display: flex; gap: 0.25rem; }

.btn {
    border: none; border-radius: 8px; padding: 0.6rem 1rem;
    font-size: 0.875rem; cursor: pointer; transition: all 0.2s;
    font-weight: 500;
}
.btn-secondary { background: var(--card-border); color: var(--text); padding: 0.5rem 0.7rem; }
.btn-secondary:hover { background: #475569; }
.btn-danger { background: var(--danger); color: white; width: 100%; margin-bottom: 0.75rem; }
.btn-danger:hover { background: var(--danger-dark); }
.btn-outline {
    background: transparent; color: var(--text-muted); width: 100%;
    border: 1px solid var(--card-border);
}
.btn-outline:hover { border-color: var(--text-muted); color: var(--text); }

.actions { margin-top: 1.5rem; }

.message {
    margin-top: 1rem; padding: 0.75rem 1rem; border-radius: 8px;
    font-size: 0.85rem; text-align: center; animation: fadeIn 0.2s ease;
}
.message.success { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.message.error { background: rgba(239, 68, 68, 0.15); color: var(--danger); }