/* ============================================
   zzpoint Payment - Stylesheet
   Clean, modern, mobile-friendly
   ============================================ */

:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --success: #22c55e;
    --success-bg: #dcfce7;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 12px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    text-align: center;
    padding: 30px 0;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.logo-icon {
    font-size: 36px;
}

.logo h1 {
    font-size: 28px;
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    margin-top: 8px;
}

/* Main */
.main {
    flex: 1;
}

/* Payment Form */
.payment-form {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.payment-form h2 {
    font-size: 20px;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 6px;
    font-size: 14px;
}

.required {
    color: var(--danger);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.hint {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* Packages */
.packages {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.package {
    position: relative;
    cursor: pointer;
}

.package input {
    position: absolute;
    opacity: 0;
}

.package-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 12px;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 10px;
    transition: all 0.2s;
}

.package:hover .package-content {
    border-color: var(--primary);
}

.package input:checked+.package-content {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.08);
}

.package .badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--success);
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 20px;
}

.package.popular .package-content {
    border-color: var(--primary);
}

.package.best-value .badge {
    background: var(--primary);
}

.price {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

.points {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.hidden {
    display: none !important;
}

/* Error message */
.error-message {
    margin-top: 16px;
    padding: 12px;
    background: var(--danger-bg);
    border: 1px solid var(--danger);
    border-radius: 8px;
    color: var(--danger);
    font-size: 14px;
    text-align: center;
}

/* Payment Info */
.payment-info {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.payment-info h3 {
    font-size: 16px;
    margin-bottom: 12px;
}

.payment-info ul {
    list-style: none;
    margin-bottom: 16px;
}

.payment-info li {
    padding: 6px 0;
    padding-left: 24px;
    position: relative;
    font-size: 14px;
    color: var(--text-secondary);
}

.payment-info li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.vnpay-logo {
    text-align: center;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

/* Result Page */
.result-page {
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 32px 24px;
    box-shadow: var(--shadow);
    text-align: center;
    width: 100%;
}

.result-card.success {
    border-top: 4px solid var(--success);
}

.result-card.failed {
    border-top: 4px solid var(--danger);
}

.result-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.result-card h2 {
    font-size: 22px;
    margin-bottom: 8px;
}

.result-card p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.result-details {
    background: var(--bg);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 24px;
    text-align: left;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-row .label {
    color: var(--text-secondary);
    font-size: 14px;
}

.detail-row .value {
    font-weight: 600;
    font-size: 14px;
}

/* Footer */
.footer {
    text-align: center;
    padding: 20px 0;
    color: var(--text-secondary);
    font-size: 13px;
}

/* Responsive */
@media (max-width: 480px) {
    .packages {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 16px;
    }

    .payment-form {
        padding: 20px;
    }
}