:root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --border: #e5e7eb;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    --radius: 10px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 30px 20px;
}

.container.narrow {
    max-width: 480px;
}

header {
    margin-bottom: 24px;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
}

.header-nav {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

header h1 {
    margin: 0 0 6px;
    font-size: 26px;
}

.subtitle {
    margin: 0;
    color: var(--muted);
}

.card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 20px;
}

.card h2 {
    margin: 0 0 18px;
    font-size: 18px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 15px;
    background: #fff;
    transition: border-color 0.15s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.link-row {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 10px;
    align-items: center;
    margin-bottom: 10px;
}

.link-row input {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 15px;
}

.actions {
    margin-top: 8px;
}

button,
.btn-primary,
.btn-small,
.btn-add,
.btn-remove,
.link-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    text-decoration: none;
    font-size: 14px;
    transition: background 0.15s, transform 0.05s;
}

button:active,
.btn-primary:active,
.btn-small:active,
.btn-add:active,
.btn-remove:active,
.link-button:active {
    transform: translateY(1px);
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    padding: 11px 22px;
    font-size: 15px;
}

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

.btn-add {
    background: #f3f4f6;
    color: var(--text);
    padding: 9px 14px;
    margin-top: 4px;
}

.btn-add:hover {
    background: #e5e7eb;
}

.btn-remove {
    background: var(--danger);
    color: #fff;
    padding: 9px 12px;
}

.btn-remove:hover {
    background: var(--danger-hover);
}

.btn-small {
    background: var(--primary);
    color: #fff;
    padding: 5px 10px;
    margin-right: 6px;
}

.btn-small.danger {
    background: var(--danger);
}

.btn-small:hover {
    opacity: 0.9;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
    font-size: 14px;
}

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

.table th {
    color: var(--muted);
    font-weight: 600;
    background: #f9fafb;
}

.table td.ops {
    white-space: nowrap;
}

.empty {
    color: var(--muted);
    margin: 12px 0;
}

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

.stats-header h1 {
    margin: 0;
}

.stats-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.stats-title h2 {
    margin: 0;
}

.badge {
    background: #e0e7ff;
    color: #3730a3;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
}

.stats-url {
    color: var(--muted);
    font-size: 14px;
    margin: 4px 0;
    word-break: break-all;
}

.stats-count {
    font-size: 16px;
    margin: 12px 0 18px;
}

.target-url {
    max-width: 220px;
    word-break: break-all;
}

/* 网站统计列表 */
.site-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.site-item {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 10px;
}

.site-header h3 {
    margin: 0;
    font-size: 17px;
}

.site-actions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.site-url,
.site-count {
    font-size: 14px;
    margin: 6px 0;
    color: var(--text);
}

.site-url a {
    color: var(--primary);
}

.code-box {
    width: 100%;
    min-height: 70px;
    margin-top: 8px;
    padding: 10px;
    font-family: Consolas, Monaco, "Courier New", monospace;
    font-size: 13px;
    background: #f9fafb;
    border: 1px solid var(--border);
    border-radius: 6px;
    resize: vertical;
}

.success {
    color: #16a34a;
    font-size: 14px;
    margin-bottom: 12px;
    text-align: center;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .link-row {
        grid-template-columns: 1fr;
    }

    .stats-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}