/* Relay 面板样式表
   手写，无框架、无构建步骤。整份文件 gzip 后约 4KB。
   浅色/深色跟随系统。 */

:root {
  --bg:        #f6f7f9;
  --surface:   #ffffff;
  --surface-2: #f0f2f5;
  --border:    #e0e3e8;
  --border-2:  #cbd1da;
  --text:      #1b1f26;
  --text-2:    #5b6472;
  --text-3:    #8a92a0;

  --accent:      #4f5bd5;
  --accent-hover:#414bc0;
  --accent-soft: #edeefc;

  --ok:      #15803d;
  --ok-bg:   #e8f6ec;
  --ok-bd:   #b7e0c3;
  --err:     #c0392b;
  --err-bg:  #fdeceb;
  --err-bd:  #f2c2bd;
  --warn:    #a16207;
  --warn-bg: #fdf5e3;
  --warn-bd: #ecd9a8;

  --radius:   10px;
  --radius-s: 7px;
  --shadow:   0 1px 2px rgba(16, 24, 40, .05), 0 1px 3px rgba(16, 24, 40, .04);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #14161a;
    --surface:   #1c1f25;
    --surface-2: #23272e;
    --border:    #2e333b;
    --border-2:  #3d434d;
    --text:      #e6e9ee;
    --text-2:    #a3abb8;
    --text-3:    #757e8c;

    --accent:      #7b85ea;
    --accent-hover:#8f97ef;
    --accent-soft: #262a44;

    --ok:      #6ee7a0;
    --ok-bg:   #14291d;
    --ok-bd:   #245035;
    --err:     #f89b90;
    --err-bg:  #2e1a18;
    --err-bd:  #5a2f2a;
    --warn:    #eec97a;
    --warn-bg: #2b2517;
    --warn-bd: #52462a;

    --shadow: 0 1px 2px rgba(0, 0, 0, .3);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { margin: 0; font-weight: 650; letter-spacing: -.01em; }
h1 { font-size: 1.55rem; }
h2 { font-size: 1.05rem; }

code, .mono { font-family: var(--mono); font-size: .88em; }
code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: .1em .38em;
}
.muted { color: var(--text-3); }
.small { font-size: .85em; }
.nowrap { white-space: nowrap; }
.right { text-align: right; }

.wrap { width: 100%; max-width: 880px; margin: 0 auto; padding: 0 20px; }

/* ---------- 顶栏 ---------- */

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  height: 56px;
}
.brand {
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--text);
  letter-spacing: -.02em;
}
.brand:hover { text-decoration: none; color: var(--accent); }

.nav { display: flex; gap: 4px; flex: 1; }
.nav a {
  color: var(--text-2);
  padding: 6px 12px;
  border-radius: var(--radius-s);
  font-size: .94rem;
}
.nav a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.nav a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.topbar-logout { display: flex; align-items: center; gap: 10px; margin: 0; }
.who { color: var(--text-3); font-size: .88rem; }

/* ---------- 主体 ---------- */

.main { flex: 1; padding: 28px 20px 48px; }
.main-centered {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  max-width: 420px;
}

.footer {
  padding: 18px 20px 26px;
  color: var(--text-3);
  font-size: .82rem;
  text-align: center;
}
.footer .dot { margin: 0 6px; }

.page-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.page-sub { margin: 4px 0 0; color: var(--text-3); font-size: .9rem; }
.page-head form { margin: 0; }

/* ---------- 提示条 ---------- */

.flash {
  border-radius: var(--radius);
  padding: 11px 15px;
  margin-bottom: 20px;
  font-size: .92rem;
  border: 1px solid;
  animation: slide-in .18s ease-out;
}
@keyframes slide-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: none; }
}
.flash-ok   { background: var(--ok-bg);   border-color: var(--ok-bd);   color: var(--ok); }
.flash-err  { background: var(--err-bg);  border-color: var(--err-bd);  color: var(--err); }
.flash-warn { background: var(--warn-bg); border-color: var(--warn-bd); color: var(--warn); }

.banner {
  border-radius: var(--radius);
  padding: 13px 16px;
  margin-bottom: 20px;
  border: 1px solid;
  font-size: .9rem;
}
.banner p { margin: 5px 0 0; }
.banner strong { display: block; }
.banner-ok  { background: var(--ok-bg);  border-color: var(--ok-bd);  color: var(--ok); }
.banner-err { background: var(--err-bg); border-color: var(--err-bd); color: var(--err); }

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 15px;
  font: inherit;
  font-size: .92rem;
  font-weight: 500;
  line-height: 1.2;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-s);
  cursor: pointer;
  white-space: nowrap;
  transition: background .12s, border-color .12s, opacity .12s;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn:active { transform: translateY(.5px); }
.btn:disabled { opacity: .55; cursor: default; }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn-danger { color: var(--err); border-color: var(--err-bd); }
.btn-danger:hover { background: var(--err-bg); }

.btn-ghost { background: transparent; border-color: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--surface-2); }

.btn-sm { padding: 5px 11px; font-size: .85rem; }
.btn-lg { padding: 11px 22px; font-size: 1rem; }
.btn-block { width: 100%; }

/* ---------- 站点卡片 ---------- */

.cards { display: flex; flex-direction: column; gap: 12px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
}
.card-off { opacity: .62; }
.card-body { min-width: 0; flex: 1; }

.domains { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-bottom: 8px; }
.domain {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text);
  word-break: break-all;
}
.domain:hover { color: var(--accent); }
.domain-plain { color: var(--text-2); }

.route {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: .88rem;
  color: var(--text-2);
}
.arrow { color: var(--text-3); }
.upstream { background: var(--surface-2); word-break: break-all; }

.note {
  margin: 9px 0 0;
  font-size: .86rem;
  color: var(--text-3);
}

.card-side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}
.card-actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.card-actions form { margin: 0; }

.state { font-size: .82rem; font-weight: 600; display: flex; align-items: center; gap: 6px; }
.state::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: currentColor;
}
.state-on  { color: var(--ok); }
.state-off { color: var(--text-3); }

/* ---------- 标签 ---------- */

.tag {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 20px;
  font-size: .74rem;
  font-weight: 600;
  border: 1px solid;
  letter-spacing: .01em;
}
.tag-https { background: var(--ok-bg);   border-color: var(--ok-bd);   color: var(--ok); }
.tag-http  { background: var(--surface-2); border-color: var(--border-2); color: var(--text-3); }
.tag-lock  { background: var(--accent-soft); border-color: var(--accent-soft); color: var(--accent); }
.tag-warn  { background: var(--warn-bg); border-color: var(--warn-bd); color: var(--warn); }
.tag-adv   { background: var(--surface-2); border-color: var(--border-2); color: var(--text-2); }
.tag-ok    { background: var(--ok-bg);   border-color: var(--ok-bd);   color: var(--ok); }
.tag-err   { background: var(--err-bg);  border-color: var(--err-bd);  color: var(--err); }

/* ---------- 空状态 ---------- */

.empty {
  background: var(--surface);
  border: 1px dashed var(--border-2);
  border-radius: var(--radius);
  padding: 52px 28px;
  text-align: center;
}
.empty h2 { font-size: 1.2rem; margin-bottom: 10px; }
.empty p { color: var(--text-2); margin: 0 0 22px; font-size: .93rem; }

/* ---------- 面板容器 ---------- */

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 22px;
  margin-bottom: 20px;
}
.panel h2 { margin-bottom: 14px; }
.panel-quiet { background: var(--surface-2); box-shadow: none; }

/* ---------- 表单 ---------- */

.form { display: flex; flex-direction: column; gap: 17px; }

.field { display: flex; flex-direction: column; gap: 6px; }
.field-row { display: flex; gap: 14px; flex-wrap: wrap; }
.field-row .field { flex: 1; min-width: 190px; }

.label { font-size: .88rem; font-weight: 600; color: var(--text); }
.req { color: var(--err); font-weight: 400; }

.hint { font-size: .82rem; color: var(--text-3); line-height: 1.55; }
.hint code { font-size: .95em; }
.hint-block { margin: 0; }

input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
  font: inherit;
  font-size: .94rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-s);
  padding: 8px 11px;
  width: 100%;
  transition: border-color .12s, box-shadow .12s;
}
textarea { resize: vertical; line-height: 1.55; }
textarea.mono { font-family: var(--mono); font-size: .86rem; }

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
::placeholder { color: var(--text-3); opacity: 1; }

.upstream { display: flex; align-items: center; gap: 7px; }
.upstream select { width: auto; flex: 0 0 auto; }
.upstream input[name="upstream_host"] { flex: 1; min-width: 110px; }
.upstream .port { flex: 0 0 92px; }
.upstream .sep { color: var(--text-3); }

/* 开关式复选框 */
.switch {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 12px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  cursor: pointer;
}
.switch:hover { border-color: var(--border-2); }
.switch input[type="checkbox"] {
  width: 17px; height: 17px;
  margin: 3px 0 0;
  flex: 0 0 auto;
  accent-color: var(--accent);
  cursor: pointer;
}
.switch-text { display: flex; flex-direction: column; gap: 2px; }
.switch-text strong { font-size: .92rem; font-weight: 600; }
.switch-text small { font-size: .82rem; color: var(--text-3); line-height: 1.5; }

/* 折叠的高级区 */
.advanced {
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  background: var(--surface);
}
.advanced > summary {
  padding: 11px 14px;
  cursor: pointer;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-2);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  user-select: none;
}
.advanced > summary::-webkit-details-marker { display: none; }
.advanced > summary::before {
  content: "›";
  display: inline-block;
  font-size: 1.15rem;
  line-height: 1;
  color: var(--text-3);
  transition: transform .15s;
}
.advanced[open] > summary::before { transform: rotate(90deg); }
.advanced > summary:hover { color: var(--text); }
.summary-hint { color: var(--text-3); font-weight: 400; font-size: .82rem; }

.advanced-body {
  display: flex;
  flex-direction: column;
  gap: 15px;
  padding: 4px 14px 16px;
  border-top: 1px solid var(--border);
  margin-top: -1px;
  padding-top: 15px;
}

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

/* ---------- 代码块与表格 ---------- */

.code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  padding: 14px 16px;
  overflow-x: auto;
  margin: 0;
  font-family: var(--mono);
  font-size: .82rem;
  line-height: 1.65;
  white-space: pre;
  color: var(--text-2);
}
.code code { background: none; border: none; padding: 0; font-size: inherit; }

.err-detail {
  background: var(--err-bg);
  border: 1px solid var(--err-bd);
  color: var(--err);
  border-radius: var(--radius-s);
  padding: 9px 12px;
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: .78rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.table-scroll { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.table th {
  text-align: left;
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-3);
  padding: 0 12px 8px 0;
  border-bottom: 1px solid var(--border);
}
.table td { padding: 11px 12px 11px 0; border-bottom: 1px solid var(--border); vertical-align: top; }
.table tr:last-child td { border-bottom: none; }
.table td:last-child, .table th:last-child { padding-right: 0; }
.detail-row td { padding-top: 0; border-bottom: none; }
.table form { margin: 0; }

.kv { display: flex; flex-direction: column; gap: 9px; }
.kv-row { display: flex; gap: 14px; align-items: baseline; flex-wrap: wrap; }
.kv .k { flex: 0 0 96px; color: var(--text-3); font-size: .86rem; }
.kv .v { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* ---------- 登录 / 初始化 ---------- */

.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 32px 30px;
  width: 100%;
}
.auth-title { text-align: center; font-size: 1.5rem; }
.auth-sub {
  text-align: center;
  color: var(--text-3);
  margin: 6px 0 24px;
  font-size: .9rem;
}

/* ---------- 窄屏 ---------- */

@media (max-width: 620px) {
  body { font-size: 14.5px; }
  .topbar-inner { gap: 12px; }
  .who { display: none; }
  .nav a { padding: 6px 9px; }
  .card { flex-direction: column; gap: 12px; }
  .card-side { align-items: flex-start; width: 100%; flex-direction: row;
               justify-content: space-between; align-items: center; }
  .page-head { flex-direction: column; align-items: stretch; }
  .page-head .btn { width: 100%; }
  .upstream { flex-wrap: wrap; }
  .upstream input[name="upstream_host"] { min-width: 100%; }
  .upstream .port { flex: 1; }
}