:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --text: #1f2937;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --bg: #f8fafc;
    --card: #ffffff;
    --shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }

body.store-page {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text);
    margin: 0;
}

.store-wrapper {
    max-width: 960px;
    margin: 0 auto;
    padding: 32px 20px 48px;
}

.store-card {
    background: var(--card);
    border-radius: 20px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.store-header {
    padding: 28px 32px;
    color: #fff;
    text-align: center;
}

.store-header.purchase { background: linear-gradient(135deg, var(--primary), var(--secondary)); }
.store-header.renewal { background: linear-gradient(135deg, #f59e0b, #ef4444); }

.store-header h1 {
    margin: 0 0 8px;
    font-size: 1.75rem;
    font-weight: 700;
}

.store-header p {
    margin: 0;
    opacity: 0.9;
    font-size: 0.95rem;
}

.store-body { padding: 32px; }

.store-steps {
    display: flex;
    gap: 12px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.store-step {
    flex: 1;
    min-width: 120px;
    text-align: center;
    padding: 12px;
    border-radius: 12px;
    background: var(--bg);
    border: 2px solid var(--border);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}

.store-step.active {
    border-color: var(--primary);
    background: #eef2ff;
    color: var(--primary);
}

.store-step.done {
    border-color: var(--success);
    background: #ecfdf5;
    color: var(--success);
}

.form-section-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-section-title i { color: var(--primary); }

.store-label {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 6px;
    color: var(--text);
}

.store-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 12px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: #fafafa;
}

.store-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.12);
    background: #fff;
}

.store-input:read-only {
    background: #f3f4f6;
    cursor: not-allowed;
}

.package-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.package-card {
    border: 2px solid var(--border);
    border-radius: 16px;
    padding: 24px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s ease;
    background: #fff;
    position: relative;
}

.package-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.08);
}

.package-card.selected {
    border-color: var(--primary);
    background: linear-gradient(180deg, #f0f4ff 0%, #fff 100%);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

.package-badge {
    position: absolute;
    top: -10px;
    right: 12px;
    background: var(--accent);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
}

.package-name { font-weight: 700; font-size: 1rem; margin-bottom: 4px; }
.package-desc { color: var(--text-muted); font-size: 0.875rem; margin-bottom: 12px; }
.package-price { font-size: 1.5rem; font-weight: 800; color: var(--primary); }
.package-price-old {
    text-decoration: line-through;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}
.package-duration { color: var(--text-muted); font-size: 0.8rem; margin-top: 8px; }

.btn-store {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-store-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
}

.btn-store-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
    color: #fff;
}

.btn-store-success { background: var(--success); color: #fff; }
.btn-store-warning { background: var(--warning); color: #fff; }

.btn-store:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.alert-store {
    padding: 14px 18px;
    border-radius: 12px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border-left: 4px solid;
}

.alert-store.danger { background: #fef2f2; color: #dc2626; border-color: #dc2626; }
.alert-store.success { background: #f0fdf4; color: #16a34a; border-color: #16a34a; }
.alert-store.info { background: #eff6ff; color: #2563eb; border-color: #2563eb; }
.alert-store.warning { background: #fffbeb; color: #d97706; border-color: #d97706; }

.user-info-box {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px 20px;
    margin-bottom: 24px;
}

.user-info-box p { margin: 0 0 6px; font-size: 0.9rem; }
.user-info-box p:last-child { margin-bottom: 0; }

.referral-group {
    display: flex;
    gap: 8px;
}

.referral-group .store-input { flex: 1; }

.payment-panel {
    background: var(--bg);
    border-radius: 16px;
    padding: 24px;
    margin-top: 24px;
    border: 1px solid var(--border);
}

.payment-panel h5 {
    font-weight: 700;
    margin-bottom: 12px;
}

.bank-info {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
}

.bank-info li {
    padding: 8px 0;
    border-bottom: 1px dashed var(--border);
    font-size: 0.9rem;
}

.bank-info li:last-child { border-bottom: none; }

.qr-container {
    text-align: center;
    padding: 20px;
    background: #fff;
    border-radius: 16px;
    border: 2px dashed var(--border);
}

.qr-container img {
    max-width: 280px;
    border-radius: 12px;
}

.payment-status {
    text-align: center;
    padding: 20px;
    margin-top: 16px;
}

.loading-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 12px;
}

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

.store-footer {
    text-align: center;
    margin-top: 20px;
}

.store-footer a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    font-weight: 500;
    margin: 0 12px;
}

.store-footer a:hover { color: #fff; text-decoration: underline; }

.discount-tag {
    display: inline-block;
    background: #ecfdf5;
    color: var(--success);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
    margin-top: 8px;
}

@media (max-width: 640px) {
    .store-body { padding: 20px; }
    .store-header { padding: 20px; }
    .package-grid { grid-template-columns: 1fr; }
}