:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
}

.container {
    max-width: 1000px;
    width: 100%;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* 套餐网格 */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.pricing-card {
    background-color: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.pricing-card.selected {
    border-color: var(--primary-color);
    background-color: #1e1b4b;
}

.pricing-card h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.pricing-card .tokens {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.pricing-card .price {
    font-size: 1.75rem;
    font-weight: bold;
    color: #38bdf8;
}

/* 支付方式区域 */
.payment-section {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    display: none;
}

.payment-section.active {
    display: block;
}

.payment-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

/* 改为 3 列平分按钮 */
.payment-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.pay-btn {
    background-color: #334155;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 20px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.pay-btn:hover {
    background-color: var(--primary-color);
}

.pay-btn span {
    font-size: 0.85rem;
    font-weight: normal;
    color: var(--text-secondary);
}

/* 模态框通用样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    position: relative;
    border: 1px solid var(--border-color);
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* QR 弹窗样式 */
.qr-image-placeholder {
    width: 200px;
    height: 200px;
    background-color: #ffffff;
    margin: 20px auto;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    border-radius: 8px;
    font-weight: bold;
}

/* 绑卡表单样式 (功能3) */
.card-form {
    text-align: left;
    margin-top: 15px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 5px;
    color: var(--text-secondary);
}

.form-group input {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: #0f172a;
    color: white;
}

.submit-card-btn {
    width: 100%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 10px;
}

.submit-card-btn:hover {
    background-color: var(--primary-hover);
}

.saved-payment-panel {
    margin-top: 28px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.saved-payment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    color: var(--text-color);
    padding: 8px 14px;
    cursor: pointer;
}

.saved-payment-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.saved-payment-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 16px 18px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.6);
}

.saved-payment-label {
    font-weight: 700;
}

.saved-payment-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.saved-payment-empty {
    color: var(--text-secondary);
    padding: 16px 0;
}

.saved-payment-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.saved-pay-btn {
    background-color: var(--primary-color);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 700;
    padding: 10px 14px;
    cursor: pointer;
}

.modal-note {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.55;
    margin-top: 12px;
}

/* Compact, deliberately neutral payment confirmation window. */
.payment-status-modal {
    background-color: rgba(15, 23, 42, 0.5);
}

.payment-status-window {
    position: relative;
    width: min(360px, calc(100% - 32px));
    padding: 32px 28px 28px;
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 22px 60px rgba(0, 0, 0, 0.24);
    color: #0f172a;
    text-align: center;
}

.payment-status-window h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.payment-status-window > p {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.55;
    white-space: pre-line;
}

.payment-status-close {
    color: #64748b;
    top: 10px;
    right: 12px;
}

.payment-status-icon {
    display: grid;
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    border-radius: 50%;
    place-items: center;
    font-size: 1.8rem;
    font-weight: 700;
}

.payment-status-icon.is-success {
    background: #dcfce7;
    color: #15803d;
}

.payment-status-icon.is-failure {
    background: #fee2e2;
    color: #dc2626;
}

.spinner {
    width: 22px;
    height: 22px;
    border: 3px solid #dbeafe;
    border-top-color: #2563eb;
    border-radius: 50%;
    animation: payment-spin 0.8s linear infinite;
}

.payment-status-amount {
    margin-top: 18px;
    color: #0f172a !important;
    font-size: 1.2rem !important;
    font-weight: 700;
}

.payment-status-plan {
    margin-top: 4px;
}

.payment-fallback-link {
    display: inline-block;
    margin-top: 18px;
    color: #2563eb;
    font-size: 0.9rem;
    text-decoration: none;
}

.payment-fallback-link:hover {
    text-decoration: underline;
}

@keyframes payment-spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 480px) {
    body { padding: 24px 14px; }
    .payment-status-window { padding: 30px 22px 24px; }
}

/* --- Auth (email + password login), independent of ABA PayWay ---------- */

.auth-nav {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    min-height: 20px;
}

.auth-nav-status {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.auth-nav-link,
.auth-nav-btn {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 6px 14px;
    cursor: pointer;
}

.auth-nav-link:hover,
.auth-nav-btn:hover {
    border-color: var(--primary-color);
}

.auth-page {
    max-width: 420px;
    display: flex;
    flex-direction: column;
}

.auth-form-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
}

.auth-form-card h2 {
    margin-bottom: 20px;
    text-align: center;
}

.auth-form-error {
    color: #f87171;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.auth-form-switch {
    margin-top: 16px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.auth-form-switch a {
    color: #38bdf8;
}

.form-hint {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 4px;
}

/* --- Popup 4: ABA Link Account (绑定账号), independent of Popup 1-3 ------ */

.link-account-modal-content {
    max-width: 380px;
}

.link-account-state {
    margin-top: 10px;
}

.link-account-qr-image {
    width: 220px;
    height: 220px;
    margin: 16px auto;
    display: block;
    border-radius: 8px;
    background: #ffffff;
    padding: 10px;
}

.link-account-deeplink-btn {
    display: inline-block;
    text-decoration: none;
    text-align: center;
    margin-top: 6px;
}

.link-account-timer {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 10px;
}

.link-account-cancel-btn {
    width: 100%;
    margin-top: 20px;
}