:root {
    color-scheme: light;
    --bg: #f3f5f7;
    --panel: #ffffff;
    --line: #d8dfe6;
    --line-strong: #bcc7d2;
    --text: #15202b;
    --muted: #647180;
    --primary: #0f6cbd;
    --primary-strong: #0b5aa0;
    --danger: #c73b3b;
    --success: #1d7a44;
    --surface: #f8fafc;
    --badge: #eef3f8;
    --radius: 14px;
    --shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
}

button,
input,
textarea,
a {
    font: inherit;
}

a {
    color: inherit;
    text-decoration: none;
}

.shell {
    width: min(1280px, calc(100vw - 24px));
    margin: 0 auto;
    padding: 12px 0 20px;
}

.topbar,
.panel,
.auth-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    margin-bottom: 12px;
}

.nav,
.topbar-actions,
.panel-tools,
.actions,
.card-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.panel-tools {
    display: block;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.nav-link {
    min-height: 40px;
    padding: 0 14px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    color: var(--muted);
    background: transparent;
}

.nav-button {
    border: 0;
    cursor: pointer;
}

.nav-link.active {
    color: #ffffff;
    background: var(--primary);
}

.page-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.single-column {
    max-width: 920px;
}

.panel {
    padding: 12px;
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 12px;
}

.panel-title {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
}

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 10px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--badge);
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
}

.input,
.textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--surface);
    color: var(--text);
    outline: none;
}

.input {
    height: 42px;
    padding: 0 12px;
}

.textarea {
    padding: 12px;
    resize: vertical;
}

.textarea-compact {
    min-height: 110px;
}

.textarea-large {
    min-height: 320px;
}

.input:focus,
.textarea:focus {
    border-color: var(--primary);
    background: #ffffff;
}

.btn,
.btn-link {
    min-height: 40px;
    padding: 0 14px;
    border-radius: 10px;
    border: 1px solid var(--line-strong);
    background: #ffffff;
    color: var(--text);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}

.btn:hover,
.btn-link:hover {
    background: #fbfdff;
}

.btn:disabled {
    opacity: 0.6;
    cursor: wait;
}

.btn-primary {
    border-color: var(--primary);
    background: var(--primary);
    color: #ffffff;
}

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

.btn-danger {
    border-color: var(--danger);
    color: var(--danger);
}

.btn-block {
    width: 100%;
}

.label {
    display: block;
    margin-bottom: 6px;
    font-size: 12px;
    color: var(--muted);
    font-weight: 600;
}

.form-stack {
    display: grid;
    gap: 12px;
}

.card-list {
    display: grid;
    gap: 10px;
    padding-top: 2px;
}

.copy-card,
.manage-card {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface);
    padding: 12px;
}

.copy-title {
    margin: 0 0 6px;
    font-size: 16px;
}

.copy-url-row {
    margin-bottom: 6px;
}

.copy-url-link {
    font-size: 12px;
    color: var(--primary);
    word-break: break-all;
}

.copy-desc,
.manage-desc {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.7;
}

.copy-desc:not(.expanded) {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.toggle-desc,
.toggle-content {
    display: block;
    margin-top: 6px;
    padding: 0;
    border: 0;
    background: none;
    color: var(--primary);
    font-size: 12px;
    cursor: pointer;
}

.copy-desc-wrap,
.copy-content-wrap {
    position: relative;
}

.copy-content {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.7;
    color: var(--muted);
    font-size: 14px;
}

.copy-content:not(.expanded) {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.copy-meta,
.manage-meta {
    margin-top: 8px;
    color: var(--muted);
    font-size: 12px;
}

.manage-title {
    margin: 0 0 8px;
    font-size: 16px;
}

.status {
    min-height: 20px;
    font-size: 13px;
    color: var(--muted);
}

.status.success {
    color: var(--success);
}

.status.error {
    color: var(--danger);
}

.empty {
    margin: 0;
    padding: 14px;
    border: 1px dashed var(--line);
    border-radius: 12px;
    background: var(--surface);
    color: var(--muted);
    font-size: 13px;
}

.hidden {
    display: none !important;
}

.auth-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 16, 24, 0.4);
    display: grid;
    place-items: center;
    padding: 16px;
    z-index: 20;
}

.auth-card {
    width: min(420px, 100%);
    padding: 20px;
    display: grid;
    gap: 12px;
}

.auth-title {
    margin: 0;
    font-size: 20px;
}

@media (max-width: 780px) {
    .shell {
        width: min(100vw - 12px, 100%);
        padding: 6px 0 16px;
    }

    .topbar {
        align-items: stretch;
        flex-direction: column;
    }

    .nav,
    .topbar-actions {
        width: 100%;
    }

    .nav .nav-link,
    .topbar-actions .btn,
    .actions .btn,
    .actions .btn-link,
    .card-actions .btn {
        flex: 1 1 calc(50% - 8px);
    }

    .actions .btn-primary,
    .actions .btn-block,
    .card-actions .btn-primary {
        flex-basis: 100%;
    }

    .textarea-large {
        min-height: 240px;
    }
}