/* Final, Polished Stylesheet v1.2 */
* { box-sizing: border-box; }
:root {
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --transition-speed: 0.2s;
}

.color-tag { display: inline-block; width: 12px; height: 12px; border: 1px solid var(--border-color); margin-right: 8px; vertical-align: middle; }
.color-tag-green { background-color: #28a745; }
.color-tag-red { background-color: #dc3545; }
.color-tag-blue { background-color: #007bff; }
.color-tag-yellow { background-color: #ffc107; }
.color-tag-purple { background-color: #6f42c1; }

tr.dragging { opacity: 0.5; background: var(--accent-color); color: var(--accent-text); }

html.light-theme {
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --transition-speed: 0.2s;
}

html.light-theme {
    --bg-color: #f0f2f5; --card-color: #ffffff; --border-color: #d9d9d9; --text-color: #141414;
    --text-muted: #595959; --accent-color: #000000; --accent-hover: #ffffff; --accent-text: #ffffff;
    --accent-hover-text: #000000; --danger-color: #d9534f; --btn-secondary-bg: #f0f2f5;
}

html.dark-theme {
    --bg-color: #0d1117; --card-color: #161b22; --border-color: #30363d; --text-color: #c9d1d9;
    --text-muted: #8b949e; --accent-color: #f0f6fc; --accent-hover: #161b22; --accent-text: #0d1117;
    --accent-hover-text: #f0f6fc; --danger-color: #f85149; --btn-secondary-bg: #21262d;
}

body { font-size: 16px; background-color: var(--bg-color); color: var(--text-color); font-family: var(--font-family); margin: 0; line-height: 1.6; transition: background-color var(--transition-speed), color var(--transition-speed); }
.container { max-width: 1400px; margin: 20px auto; padding: 0 20px; }
header { display: flex; justify-content: center; align-items: center; gap: 20px; text-align: center; padding: 20px 0; border-bottom: 1px solid var(--border-color); margin-bottom: 30px; }
header h1 { margin: 0; font-size: 26px; font-weight: 600; } header h1 a { color: var(--text-color); text-decoration: none; }
.theme-switcher { font-size: 24px; cursor: pointer; z-index: 10; }
.card { background-color: var(--card-color); border: 1px solid var(--border-color); margin-bottom: 25px; }
.card-header { padding: 18px 22px; border-bottom: 1px solid var(--border-color); font-size: 18px; font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
.card-body { padding: 22px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; align-items: flex-end; }
.form-group { display: flex; flex-direction: column; }
.form-group label { margin-bottom: 8px; color: var(--text-muted); font-size: 13px; text-transform: uppercase; }
.form-group input, .form-group select { background-color: var(--bg-color); color: var(--text-color); padding: 14px; border: 1px solid var(--border-color); font-size: 15px; transition: all var(--transition-speed); }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--accent-color); }
.input-group { display: flex; flex-wrap: wrap; }
.input-group input { flex-grow: 1; border-right-width: 0; }
.input-group .btn { flex-shrink: 0; }
.input-group .btn:not(:last-child) { border-right-width: 0; }
.btn { background-color: var(--accent-color); color: var(--accent-text); padding: 14px 22px; border: 1px solid var(--accent-color); cursor: pointer; text-decoration: none; text-align: center; font-size: 15px; transition: all var(--transition-speed); white-space: nowrap; }
.btn:hover { background-color: var(--accent-hover); color: var(--accent-hover-text); }
.btn-danger { background-color: var(--danger-color); border-color: var(--danger-color); color: #fff; }
.btn-danger:hover { background-color: var(--bg-color); color: var(--danger-color); }
.btn-secondary { background-color: var(--btn-secondary-bg); border-color: var(--border-color); color: var(--text-color); }
.btn-secondary:hover { border-color: var(--accent-color); }
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 16px; text-align: left; border-bottom: 1px solid var(--border-color); }
th { font-weight: 600; color: var(--text-muted); font-size: 13px; text-transform: uppercase; }
.feedback { padding: 16px; margin-bottom: 20px; border: 1px solid; }
.feedback.success { background-color: #9ece6a1a; border-color: #9ece6a; color: #9ece6a; }
.feedback.danger { background-color: #f7768e1a; border-color: #f7768e; color: #f7768e; }
.domain-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.domain-card { background-color: var(--card-color); border: 1px solid var(--border-color); padding: 25px; text-align: center; cursor: pointer; transition: all var(--transition-speed); }
.domain-card:hover { transform: translateY(-2px); border-color: var(--accent-color); }
.domain-card h3 { margin: 0 0 10px 0; color: var(--text-color); font-weight: 600; }
.domain-card p { margin: 0; color: var(--text-muted); }
.visit-link { font-size: 18px; text-decoration: none; color: var(--text-muted); margin-left: 10px; }
.visit-link:hover { color: var(--accent-color); }
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.7); backdrop-filter: blur(5px); }
.modal-content { background-color: var(--card-color); margin: 6% auto; padding: 20px; border: 1px solid var(--border-color); width: 90%; max-width: 800px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; margin-bottom: 20px; }
.modal-header h2 { margin: 0; }
.close-btn { color: var(--text-muted); font-size: 28px; font-weight: bold; cursor: pointer; }
.close-btn:hover { color: var(--text-color); }
* { border-radius: 0 !important; }
@media (max-width: 768px) {
    body { font-size: 15px; }
    .container { padding: 0 10px; }
    header { gap: 15px; }
    header h1 { font-size: 20px; }
    table, thead, tbody, th, td, tr { display: block; }
    thead tr { position: absolute; top: -9999px; left: -9999px; }
    tr { border: 1px solid var(--border-color); margin-bottom: 15px; }
    td { border: none; border-bottom: 1px solid var(--border-color); position: relative; padding-left: 45%; text-align: right; min-height: 24px; }
    td[data-label="操作"] { display: flex; flex-wrap: wrap; justify-content: flex-end; align-items: center; gap: 8px; }
    td:before { position: absolute; top: 15px; left: 15px; width: 40%; padding-right: 10px; white-space: nowrap; text-align: left; font-weight: bold; color: var(--text-muted); content: attr(data-label); }
    .form-grid { grid-template-columns: 1fr; }
    .input-group { flex-direction: column; }
    .input-group input {  border-right-width: 1px; border-bottom: none;  }
    .input-group .btn { width: 100%; margin-top: 6px; }
    .input-group .btn:not(:last-child) { border-right-width: 1px; }
}