:root {
    --bg: #f6f7f9;
    --panel: #ffffff;
    --panel-alt: #fbfcfd;
    --text: #172026;
    --muted: #66727f;
    --line: #dfe5eb;
    --primary: #166c5d;
    --primary-dark: #0f5147;
    --accent: #a0512d;
    --danger: #b42318;
    --success: #087443;
    --warning: #8a5a00;
    --shadow: 0 8px 24px rgba(23, 32, 38, 0.08);
    --topbar: #ffffff;
    --sidebar: #202a33;
    --input-bg: #ffffff;
    --chip-bg: #fbfcfd;
    --secondary-bg: #e8f2ef;
    --code-bg: #11181f;
    --code-text: #f8fafc;
    --notice-bg: #fffaf0;
    --notice-line: #f0d391;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f1417;
        --panel: #12181b;
        --panel-alt: #151d21;
        --text: #f4f7f8;
        --muted: #9aa6ad;
        --line: #2d383f;
        --primary: #4ed7c1;
        --primary-dark: #26b8a1;
        --accent: #f0b05d;
        --danger: #ff776d;
        --success: #58d68d;
        --warning: #e8bd56;
        --shadow: none;
        --topbar: #0d1113;
        --sidebar: #0f1b22;
        --input-bg: #0f1417;
        --chip-bg: #151d21;
        --secondary-bg: #12342f;
        --code-bg: #05080a;
        --code-text: #f4f7f8;
        --notice-bg: #2a2415;
        --notice-line: #5c4714;
    }
}

:root[data-theme="light"] {
    --bg: #f6f7f9;
    --panel: #ffffff;
    --panel-alt: #fbfcfd;
    --text: #172026;
    --muted: #66727f;
    --line: #dfe5eb;
    --primary: #166c5d;
    --primary-dark: #0f5147;
    --accent: #a0512d;
    --danger: #b42318;
    --success: #087443;
    --warning: #8a5a00;
    --shadow: 0 8px 24px rgba(23, 32, 38, 0.08);
    --topbar: #ffffff;
    --sidebar: #202a33;
    --input-bg: #ffffff;
    --chip-bg: #fbfcfd;
    --secondary-bg: #e8f2ef;
    --code-bg: #11181f;
    --code-text: #f8fafc;
    --notice-bg: #fffaf0;
    --notice-line: #f0d391;
}

:root[data-theme="dark"] {
    --bg: #0f1417;
    --panel: #12181b;
    --panel-alt: #151d21;
    --text: #f4f7f8;
    --muted: #9aa6ad;
    --line: #2d383f;
    --primary: #4ed7c1;
    --primary-dark: #26b8a1;
    --accent: #f0b05d;
    --danger: #ff776d;
    --success: #58d68d;
    --warning: #e8bd56;
    --shadow: none;
    --topbar: #0d1113;
    --sidebar: #0f1b22;
    --input-bg: #0f1417;
    --chip-bg: #151d21;
    --secondary-bg: #12342f;
    --code-bg: #05080a;
    --code-text: #f4f7f8;
    --notice-bg: #2a2415;
    --notice-line: #5c4714;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.5;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    padding: 0 28px;
    background: var(--topbar);
    border-bottom: 1px solid var(--line);
}

.brand {
    color: var(--text);
    font-weight: 750;
    font-size: 18px;
}

.nav {
    display: flex;
    gap: 18px;
    align-items: center;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--panel-alt);
    color: var(--text);
    cursor: pointer;
    font-size: 17px;
    line-height: 1;
}

.theme-toggle:hover {
    border-color: var(--primary);
}

.admin-nav {
    position: fixed;
    top: 64px;
    bottom: 0;
    left: 0;
    width: 184px;
    padding: 22px 18px;
    background: var(--sidebar);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.admin-nav a,
.admin-nav .link-button {
    display: block;
    color: #f6f7f9;
    padding: 10px 12px;
    border-radius: 6px;
    text-align: left;
}

.admin-nav a:hover,
.admin-nav .link-button:hover {
    background: rgba(255, 255, 255, 0.1);
    text-decoration: none;
}

.page {
    max-width: 1180px;
    margin: 0 auto;
    padding: 28px;
}

.page.with-admin-nav {
    margin-left: 184px;
}

.hero,
.section {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 22px;
}

.hero {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.hero h1,
.section h1,
.section h2 {
    margin: 0 0 10px;
    letter-spacing: 0;
}

.hero p,
.section p {
    margin: 0;
}

.narrow {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.section-head {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    margin-bottom: 16px;
}

.muted {
    color: var(--muted);
    font-size: 14px;
}

.chip-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.chip {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 6px 12px;
    background: var(--chip-bg);
    color: var(--muted);
}

.chip:hover {
    text-decoration: none;
}

.chip.active {
    border-color: var(--primary);
    background: var(--secondary-bg);
    color: var(--primary);
    font-weight: 750;
}

.inline-form {
    display: flex;
    gap: 10px;
    align-items: center;
}

.inline-form label {
    display: flex;
    gap: 8px;
    align-items: center;
    color: var(--muted);
    font-weight: 700;
}

.inline-form select {
    min-width: 150px;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 8px 10px;
    color: var(--text);
    background: var(--input-bg);
    font: inherit;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.product-card {
    display: flex;
    min-height: 250px;
    flex-direction: column;
    justify-content: space-between;
    gap: 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px;
    background: var(--panel-alt);
}

.product-card h3 {
    margin: 6px 0 8px;
    font-size: 19px;
}

.product-meta,
.summary-line {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
}

.product-meta strong {
    color: var(--accent);
    font-size: 22px;
}

.button,
button.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 16px;
    border: 0;
    border-radius: 6px;
    color: #ffffff;
    background: var(--primary);
    font-weight: 700;
    cursor: pointer;
}

.button:hover {
    background: var(--primary-dark);
    text-decoration: none;
}

.button.secondary {
    color: var(--primary);
    background: var(--secondary-bg);
}

.button.disabled,
.button:disabled {
    background: #9ba7b2;
    cursor: not-allowed;
}

.back-link {
    display: inline-block;
    margin-bottom: 14px;
}

.form {
    display: grid;
    gap: 16px;
    margin-top: 18px;
}

.form label {
    display: grid;
    gap: 7px;
    font-weight: 700;
}

.form input,
.form select,
.form textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 10px 12px;
    color: var(--text);
    background: var(--input-bg);
    font: inherit;
}

.form textarea {
    resize: vertical;
}

.form small {
    color: var(--muted);
    font-weight: 400;
}

.checkbox {
    display: flex !important;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 8px !important;
}

.checkbox input {
    width: auto;
}

.checkbox.compact {
    font-weight: 400;
}

.flash-wrap {
    display: grid;
    gap: 10px;
    margin-bottom: 18px;
}

.flash,
.notice,
.empty,
.result-box {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 14px 16px;
    background: var(--panel);
}

.flash.success {
    border-color: #9fd6bd;
    color: var(--success);
}

.flash.error,
.notice.error {
    border-color: #f0b5ae;
    color: var(--danger);
}

.notice {
    margin: 16px 0;
    color: var(--warning);
    background: var(--notice-bg);
    border-color: var(--notice-line);
}

.status {
    display: inline-flex;
    margin-bottom: 14px;
    padding: 5px 10px;
    border-radius: 999px;
    background: #eef2f5;
    color: var(--muted);
    font-weight: 700;
}

.status.fulfilled {
    background: #e6f5ee;
    color: var(--success);
}

.status.pending {
    background: #fff5df;
    color: var(--warning);
}

.status.expired,
.status.abnormal {
    background: #fff0ee;
    color: var(--danger);
}

.card-output {
    white-space: pre-wrap;
    word-break: break-word;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 16px;
    background: var(--code-bg);
    color: var(--code-text);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 14px;
}

.stat {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 16px;
    background: var(--panel-alt);
}

.stat span {
    display: block;
    color: var(--muted);
}

.stat strong {
    display: block;
    margin-top: 8px;
    font-size: 30px;
}

.result-list {
    display: grid;
    gap: 16px;
    margin-top: 18px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--panel);
}

th,
td {
    border-bottom: 1px solid var(--line);
    padding: 12px 10px;
    text-align: left;
    vertical-align: middle;
}

th {
    color: var(--muted);
    font-size: 13px;
    font-weight: 750;
}

code {
    white-space: pre-wrap;
    word-break: break-word;
}

.actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.actions form {
    margin: 0;
}

.link-button {
    border: 0;
    background: transparent;
    color: var(--primary);
    cursor: pointer;
    font: inherit;
    padding: 0;
}

.link-button.danger {
    color: var(--danger);
}

.table-input {
    width: min(100%, 260px);
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 8px 10px;
    color: var(--text);
    background: var(--input-bg);
    font: inherit;
}

.table-input.short {
    max-width: 110px;
}

.cell-wide {
    max-width: 360px;
    white-space: pre-wrap;
    word-break: break-word;
}

@media (max-width: 760px) {
    .topbar {
        padding: 0 16px;
    }

    .nav {
        gap: 10px;
        font-size: 14px;
    }

    .admin-nav {
        position: static;
        width: auto;
        flex-direction: row;
        overflow-x: auto;
        padding: 10px 16px;
    }

    .page,
    .page.with-admin-nav {
        margin-left: 0;
        padding: 16px;
    }

    .hero,
    .section-head {
        align-items: flex-start;
        flex-direction: column;
    }

    table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}

/* USDT 收款 */
.crypto-pay {
    margin: 16px 0;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel-alt);
}

.crypto-amount {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: baseline;
    margin-bottom: 8px;
}

.crypto-amount strong {
    font-size: 30px;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}

.crypto-address {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    margin: 14px 0;
}

.crypto-address > div:last-child {
    flex: 1 1 220px;
    min-width: 0;
}

.crypto-address code {
    display: block;
    margin: 4px 0;
    font-size: 15px;
    word-break: break-all;
}

.crypto-address .qr svg {
    display: block;
    border-radius: 6px;
}

.crypto-tips {
    margin: 0;
    padding-left: 20px;
    color: var(--muted);
    line-height: 1.7;
}

.inline-assign {
    display: flex;
    gap: 6px;
    align-items: center;
    margin: 0;
}

.inline-assign input {
    width: 140px;
    padding: 6px 8px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--text);
}