:root {
  --bg: #12141a;
  --panel: #1a1d26;
  --panel2: #21252f;
  --line: #2e3340;
  --fg: #e4e7ee;
  --dim: #9aa3b5;
  --accent: #5aa9ff;
  --ok: #5fd08a;
  --bad: #ff8a7a;
  --warn: #ffcc66;
  --mono: ui-monospace, "JetBrains Mono", "DejaVu Sans Mono", Menlo, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f6fa; --panel: #fff; --panel2: #eef1f7; --line: #d6dbe6;
    --fg: #1a1d26; --dim: #5b6479; --accent: #0b62d0;
    --ok: #1a7f4b; --bad: #d82b10; --warn: #8a6100;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 2rem 1rem 4rem;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

header, main, footer { max-width: 780px; margin: 0 auto; }

h1 { font-size: 1.6rem; margin: 0 0 .3rem; }
h2 { font-size: 1.05rem; margin: 0 0 1rem; display: flex; align-items: center; gap: .6rem; }
.sub { color: var(--dim); margin: 0 0 2rem; }

.step {
  display: grid; place-items: center;
  width: 1.6rem; height: 1.6rem; flex: none;
  border-radius: 50%;
  background: var(--accent); color: var(--bg);
  font-size: .85rem; font-weight: 700;
}

section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.notice { border-color: var(--accent); }
.notice h2 { color: var(--accent); }
.notice h2::before { content: "🔒"; }
.notice p { margin: 0; }

/* ---- fields ---- */

.row { display: flex; gap: 1.25rem; flex-wrap: wrap; align-items: flex-start; }
.field { position: relative; flex: 1 1 20rem; }
.field.narrow { flex: 0 1 14rem; }

label { display: block; font-weight: 600; margin-bottom: .35rem; font-size: .9rem; }

input[type=text], input[type=password] {
  width: 100%;
  padding: .55rem .7rem;
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--fg);
  font: inherit;
}
input[type=text]:focus, input[type=password]:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}
#privkey { font-family: var(--mono); padding-right: 4rem; }
#privkey.bad { border-color: var(--bad); }
#privkey.bad:focus { outline-color: var(--bad); }

.reveal {
  position: absolute; right: .35rem; top: 1.9rem;
  padding: .3rem .55rem; font-size: .8rem;
}

.hint { color: var(--dim); font-size: .85rem; margin: .4rem 0 0; }
.hint.ok  { color: var(--ok); }
.hint.bad { color: var(--bad); }

.check { display: flex; gap: .55rem; align-items: flex-start; font-weight: 400; }
.check input { margin-top: .35rem; flex: none; }
.check em { display: block; color: var(--dim); font-style: normal; font-size: .85rem; }

/* ---- combobox ---- */

.combo { position: relative; }
.clear {
  position: absolute; right: .3rem; top: .3rem;
  background: none; border: 0; color: var(--dim);
  font-size: 1.2rem; line-height: 1; padding: .2rem .4rem; cursor: pointer;
}
.clear:hover { color: var(--fg); }

#country-list {
  position: absolute; z-index: 20; left: 0; right: 0; top: calc(100% + 4px);
  max-height: 15rem; overflow-y: auto;
  margin: 0; padding: .25rem; list-style: none;
  background: var(--panel2);
  border: 1px solid var(--line); border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,.35);
}
#country-list li {
  display: flex; justify-content: space-between; gap: 1rem;
  padding: .4rem .6rem; border-radius: 4px; cursor: pointer;
}
#country-list li:hover, #country-list li.active { background: var(--accent); color: var(--bg); }
#country-list li.empty { color: var(--dim); cursor: default; }
#country-list .count { color: var(--dim); font-variant-numeric: tabular-nums; font-size: .85rem; }
#country-list li:hover .count, #country-list li.active .count { color: var(--bg); }

/* ---- server list ---- */

.servers { margin-top: 1.25rem; display: grid; gap: .5rem; }

.server {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: .75rem; align-items: center;
  padding: .6rem .75rem;
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  font-weight: 400;
  margin: 0;
}
.server:has(input:checked) { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, var(--panel2)); }
.server .name  { font-family: var(--mono); font-size: .9rem; }
.server .where { color: var(--dim); font-size: .85rem; }
.server .ip    { font-family: var(--mono); font-size: .8rem; color: var(--dim); }
.server .tag {
  font-size: .7rem; font-weight: 700; letter-spacing: .04em;
  padding: .1rem .4rem; border-radius: 3px;
  background: var(--ok); color: var(--bg);
}

@media (max-width: 600px) {
  .server { grid-template-columns: auto 1fr auto; }
  .server .ip { display: none; }
}

/* ---- command + config ---- */

.cmd {
  display: flex; gap: .5rem; align-items: flex-start;
  background: var(--panel2); border: 1px solid var(--line);
  border-radius: 6px; padding: .6rem .7rem; margin-bottom: 1rem;
}
.cmd code {
  font-family: var(--mono); font-size: .82rem; word-break: break-all; flex: 1;
  white-space: break-spaces;
}

.config {
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .9rem;
  font-family: var(--mono); font-size: .85rem;
  white-space: pre-wrap; word-break: break-all;
  margin: 0 0 .9rem;
  min-height: 6rem;
}

.actions { display: flex; gap: .6rem; }

button {
  background: var(--panel2);
  border: 1px solid var(--line);
  color: var(--fg);
  border-radius: 6px;
  padding: .45rem .9rem;
  font: inherit; cursor: pointer;
}
button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
button:disabled { opacity: .45; cursor: not-allowed; }
#copy-config:not(:disabled), #download:not(:disabled) { border-color: var(--accent); color: var(--accent); }

.warn {
  border-left: 3px solid var(--warn);
  padding-left: .8rem;
  color: var(--dim);
  font-size: .88rem;
}
.warn code { font-family: var(--mono); font-size: .82rem; color: var(--fg); word-break: break-all; }

details summary { cursor: pointer; color: var(--accent); }
.opts { display: grid; gap: .9rem; margin-top: 1rem; }
.opts code { font-family: var(--mono); font-size: .82rem; }

.key-actions {
  display: flex; gap: .75rem; align-items: center; flex-wrap: wrap;
  margin-top: .9rem;
}
.key-actions .hint { margin: 0; flex: 1 1 18rem; }

.opts-actions {
  display: flex; gap: .75rem; align-items: center; flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding-top: .9rem;
}
.opts-actions .hint { margin: 0; flex: 1 1 16rem; }

footer { color: var(--dim); font-size: .85rem; margin-top: 2rem; }
footer p { margin: .4rem 0; }

a { color: var(--accent); }