/* ════════════════════════════════════════════════
   AnyAI Payment — style.css
   macOS Bright UI / RWD
   ════════════════════════════════════════════════ */

:root {
    --bg: #f5f5f7;
    --card: #ffffff;
    --card-hover: #fafafa;
    --border: rgba(0,0,0,.08);
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-muted: #aeaeb2;
    --accent: #6c5ce7;
    --accent-light: #a29bfe;
    --accent-bg: rgba(108,92,231,.07);
    --success: #00b894;
    --success-bg: rgba(0,184,148,.1);
    --warning: #fdcb6e;
    --danger: #e17055;
    --gold: #f9a825;
    --gold-bg: rgba(249,168,37,.1);
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
    --shadow: 0 4px 20px rgba(0,0,0,.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.1);
    --transition: all .25s cubic-bezier(.4,0,.2,1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ──────────── Header ──────────── */

.pay-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,.82);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
}
.pay-header__inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.pay-header__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}
.pay-header__brand h1 {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.2;
}
.pay-header__brand small {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
}
.pay-header__brand img {
    border-radius: 8px;
}
.pay-header__right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* AP Badge */
.ap-badge {
    display: flex;
    align-items: center;
    gap: 5px;
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
    color: #fff;
    padding: 6px 14px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 14px;
    box-shadow: 0 2px 10px rgba(108,92,231,.3);
}
.ap-badge__icon { font-size: 16px; }
.ap-badge__label { font-size: 11px; opacity: .8; }

/* ──────────── Main ──────────── */

.pay-main {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 24px 80px;
}

/* ──────────── Cards ──────────── */

.pay-card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 32px;
    margin-bottom: 24px;
}

/* ──────────── Auth Card ──────────── */

.pay-auth-card {
    text-align: center;
    max-width: 480px;
    margin: 80px auto;
}
.pay-auth-card .pay-card__icon {
    font-size: 48px;
    margin-bottom: 16px;
}
.pay-auth-card h2 {
    font-size: 22px;
    margin-bottom: 8px;
}
.pay-auth-card__desc {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 28px;
}
.auth-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.auth-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border);
}
.auth-btn--google {
    background: #fff;
    color: #333;
}
.auth-btn--google:hover {
    background: #f8f8f8;
    box-shadow: var(--shadow);
}
.auth-btn--wallet {
    background: linear-gradient(135deg, #f6851b, #e2761b);
    color: #fff;
    border: none;
}
.auth-btn--wallet:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(226,118,27,.35);
}
.auth-btn__emoji { font-size: 20px; }

/* ──────────── User Info Bar ──────────── */

.user-info-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding: 20px 28px;
}
.user-info-bar__left {
    display: flex;
    align-items: center;
    gap: 14px;
}
.user-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
}
.user-name {
    font-weight: 700;
    font-size: 15px;
}
.user-id {
    font-size: 12px;
    color: var(--text-muted);
    font-family: monospace;
}
.user-info-bar__right {
    display: flex;
    align-items: center;
    gap: 14px;
}
.balance-display {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}
.balance-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .5px;
}
.balance-value {
    font-size: 28px;
    font-weight: 800;
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.btn-link-wallet, .btn-logout {
    background: none;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 13px;
    transition: var(--transition);
}
.btn-link-wallet:hover, .btn-logout:hover {
    background: var(--card-hover);
    box-shadow: var(--shadow-sm);
}

/* ──────────── Section Blocks ──────────── */

.section-block {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 28px;
    margin-bottom: 24px;
}
.section-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
}
.section-desc {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 20px;
}
/* ──────────── Chain Selector ──────────── */

.chain-selector { position: relative; }
.chain-selector__btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition);
}
.chain-selector__btn:hover { background: #ececee; box-shadow: var(--shadow-sm); }
.chain-selector__dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 180px;
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 50;
    overflow: hidden;
}
.chain-selector__dropdown.show { display: block; }
.chain-option {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 12px 16px;
    border: none;
    background: transparent;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    color: var(--text-primary);
    transition: var(--transition);
}
.chain-option:hover { background: var(--accent-bg); }
.chain-option.active { background: var(--accent-bg); color: var(--accent); font-weight: 700; }
.chain-option small {
    margin-left: auto;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 600;
}

/* ──────────── Coin Banner ──────────── */

.chain-coins-banner {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.coin-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    border: 2px solid var(--border);
    cursor: pointer;
    transition: var(--transition);
    background: var(--card);
    color: var(--text-secondary);
}
.coin-tag:hover { border-color: var(--accent-light); transform: translateY(-1px); }
.coin-tag--active {
    border-color: var(--accent);
    background: var(--accent-bg);
    color: var(--accent);
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(108,92,231,.15);
}
.chain-price-tag {
    margin-left: auto;
    font-size: 13px;
    font-weight: 600;
    color: #e17055;
    background: var(--gold-bg);
    padding: 4px 12px;
    border-radius: 8px;
}

/* ──────────── Tier Grid ──────────── */

.tier-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.tier-card {
    position: relative;
    background: var(--card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
}
.tier-card:hover {
    border-color: var(--accent-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}
.tier-card--popular {
    border-color: var(--accent);
    background: var(--accent-bg);
}
.tier-card__badge {
    position: absolute;
    top: -1px;
    right: -1px;
    background: linear-gradient(135deg, var(--accent), #e17055);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 0 14px 0 10px;
    letter-spacing: .3px;
}
.tier-card__usd {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 2px;
}
.tier-card__usd small {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
}
.tier-card__ap {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
    margin: 8px 0;
}
.tier-card__bonus {
    font-size: 12px;
    color: var(--success);
    font-weight: 600;
    background: var(--success-bg);
    display: inline-block;
    padding: 2px 8px;
    border-radius: 6px;
    margin-bottom: 10px;
}
.tier-card__bnb {
    font-size: 13px;
    color: var(--text-muted);
    font-family: monospace;
}
.tier-card__btn {
    margin-top: 14px;
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: #fff;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}
.tier-card__btn:hover {
    box-shadow: 0 4px 15px rgba(108,92,231,.4);
    transform: scale(1.02);
}

/* ──────────── Conversion Blocks ──────────── */

.convert-block {
    background: var(--bg);
    border-radius: var(--radius-sm);
    padding: 18px;
    margin-bottom: 14px;
}
.convert-block__header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.convert-block__icon { font-size: 24px; }
.convert-block__header strong {
    display: block;
    font-size: 14px;
}
.convert-block__current {
    font-size: 12px;
    color: var(--text-secondary);
}
.convert-block__current b {
    color: var(--accent);
    font-size: 14px;
}
.convert-packs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.convert-pack {
    flex: 1;
    min-width: 120px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}
.convert-pack:hover {
    border-color: var(--accent-light);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}
.convert-pack__cost {
    font-size: 16px;
    font-weight: 700;
    color: var(--accent);
}
.convert-pack__arrow {
    color: var(--text-muted);
    font-size: 12px;
    margin: 4px 0;
}
.convert-pack__credits {
    font-size: 18px;
    font-weight: 800;
    color: var(--text-primary);
}
.convert-pack__credits small {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}
.convert-pack__bonus {
    font-size: 10px;
    color: var(--success);
    font-weight: 600;
    margin-top: 2px;
}

/* ──────────── Cost Table ──────────── */

.cost-table {
    display: grid;
    gap: 8px;
}
.cost-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.cost-row:hover { background: #ececee; }
.cost-icon { font-size: 20px; }
.cost-name {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
}
.cost-price {
    font-weight: 700;
    font-size: 14px;
    color: var(--accent);
    white-space: nowrap;
}
.cost-row--free .cost-price {
    color: var(--success);
}

/* ──────────── History ──────────── */

.history-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
}
.history-tab {
    padding: 6px 16px;
    border-radius: 8px;
    border: none;
    background: transparent;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}
.history-tab:hover { background: var(--bg); }
.history-tab.active {
    background: var(--accent);
    color: #fff;
}
.history-list {
    max-height: 400px;
    overflow-y: auto;
}
.history-empty {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
    font-size: 14px;
}
.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
.history-item:last-child { border-bottom: none; }
.history-item__left {
    display: flex;
    align-items: center;
    gap: 10px;
}
.history-item__icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}
.history-item__icon--purchase { background: var(--success-bg); }
.history-item__icon--consume { background: rgba(225,112,85,.1); }
.history-item__icon--convert { background: var(--accent-bg); }
.history-item__detail {
    font-weight: 500;
}
.history-item__time {
    color: var(--text-muted);
    font-size: 11px;
}
.history-item__amount {
    font-weight: 700;
    font-size: 14px;
    white-space: nowrap;
}
.history-item__amount--positive { color: var(--success); }
.history-item__amount--negative { color: var(--danger); }

.btn-load-more {
    display: block;
    width: 100%;
    padding: 10px;
    margin-top: 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}
.btn-load-more:hover { background: #e8e8ea; }

/* ──────────── Modal ──────────── */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    backdrop-filter: blur(8px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.modal-content {
    background: var(--card);
    border-radius: var(--radius);
    padding: 32px;
    max-width: 420px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    position: relative;
    animation: modalIn .3s ease;
}
@keyframes modalIn {
    from { opacity: 0; transform: scale(.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-muted);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}
.modal-close:hover { background: var(--bg); color: var(--text-primary); }
.modal-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
}
.modal-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.modal-row:last-of-type { border-bottom: none; }
.modal-row--small { font-size: 12px; color: var(--text-muted); }
.modal-ap {
    color: var(--accent);
    font-size: 18px;
}
.modal-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 16px;
    padding: 12px;
    background: var(--accent-bg);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--accent);
    font-weight: 500;
}
.btn-confirm-pay {
    width: 100%;
    margin-top: 20px;
    padding: 14px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}
.btn-confirm-pay:hover {
    box-shadow: 0 6px 20px rgba(108,92,231,.4);
    transform: translateY(-1px);
}
.btn-confirm-pay:disabled {
    opacity: .5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ──────────── Toast ──────────── */

.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: #fff;
    box-shadow: var(--shadow-lg);
    animation: toastIn .3s ease, toastOut .3s ease 2.7s forwards;
    max-width: 360px;
}
.toast--success { background: var(--success); }
.toast--error { background: var(--danger); }
.toast--info { background: var(--accent); }
@keyframes toastIn { from { opacity: 0; transform: translateX(40px); } }
@keyframes toastOut { to { opacity: 0; transform: translateX(40px); } }

/* ──────────── Spinner ──────────── */

.spinner-small {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(108,92,231,.2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ──────────── Footer ──────────── */

.pay-footer {
    text-align: center;
    padding: 24px;
    color: var(--text-muted);
    font-size: 12px;
    border-top: 1px solid var(--border);
}

/* ──────────── Wallet Modal ──────────── */

.wallet-modal { max-width: 440px; }
.wallet-modal__desc {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 20px;
}
.wallet-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.wallet-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    width: 100%;
}
.wallet-item:hover {
    border-color: var(--accent-light);
    background: var(--accent-bg);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}
.wallet-item img {
    flex-shrink: 0;
    border-radius: 8px;
}
.wallet-item div {
    flex: 1;
    min-width: 0;
}
.wallet-item strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
}
.wallet-item small {
    color: var(--text-muted);
    font-size: 11px;
}
.wallet-item__arrow {
    color: var(--text-muted);
    font-size: 16px;
    transition: var(--transition);
}
.wallet-item:hover .wallet-item__arrow {
    color: var(--accent);
    transform: translateX(3px);
}
.wallet-modal__hint {
    margin-top: 16px;
    padding: 12px;
    background: var(--gold-bg);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}

/* ──────────── Responsive ──────────── */

@media (max-width: 768px) {
    .pay-main { padding: 16px 16px 60px; }
    .pay-card { padding: 22px 18px; }
    .section-block { padding: 22px 18px; }
    .tier-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .tier-card { padding: 20px 16px; }
    .user-info-bar {
        flex-direction: column;
        align-items: flex-start;
    }
    .user-info-bar__right {
        width: 100%;
        justify-content: space-between;
    }
    .convert-packs { flex-direction: column; }
    .convert-pack { min-width: unset; }
    .pay-header__inner { padding: 10px 16px; }
}

@media (max-width: 480px) {
    .tier-card__usd { font-size: 26px; }
    .tier-card__ap { font-size: 18px; }
    .balance-value { font-size: 22px; }
    .modal-content { padding: 24px 20px; }
}