* {
    font-family: 'Vazirmatn', system-ui, -apple-system, sans-serif;
}

body {
    direction: rtl;
}

.spinner {
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top: 3px solid white;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.tab-active {
    border-bottom: 2px solid #4f46e5;
    color: #4f46e5;
    font-weight: 600;
}

.tab-inactive {
    border-bottom: 2px solid transparent;
    color: #6b7280;
}

.tab-inactive:hover {
    color: #374151;
}

.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    padding: 1.5rem;
}

.stat-value {
    font-size: 1.875rem;
    font-weight: 700;
    color: #111827;
}

.stat-label {
    font-size: 0.875rem;
    color: #6b7280;
}

.btn-primary {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary:hover:not(:disabled) {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-secondary {
    background: white;
    color: #374151;
    border: 1px solid #d1d5db;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: #f9fafb;
}

.input-field {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.input-field:focus {
    outline: none;
    border-color: #4f46e5;
    ring: 2px;
    ring-color: #e0e7ff;
}

.error-message {
    background: #fef2f2;
    color: #991b1b;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.success-message {
    background: #f0fdf4;
    color: #166534;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.referral-link {
    background: #f3f4f6;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-family: monospace;
    font-size: 0.875rem;
    word-break: break-all;
    direction: ltr;
    text-align: left;
}

@media (max-width: 640px) {
    .card {
        padding: 1rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
}