:root {
  --bg: #eef1f5;
  --card-bg: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #d7dee6;
  --accent: #3b6ea5;
  --accent-text: #ffffff;
  --danger: #c0392b;
  --ok: #16a34a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --card-bg: #1e293b;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --border: #334155;
    --accent: #60a5fa;
    --accent-text: #0b1220;
    --danger: #f87171;
    --ok: #4ade80;
  }
}
/* Explicit user choice (via the theme toggle) always wins over the OS default above. */
:root[data-theme="light"] {
  --bg: #eef1f5;
  --card-bg: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #d7dee6;
  --accent: #3b6ea5;
  --accent-text: #ffffff;
  --danger: #c0392b;
  --ok: #16a34a;
}
:root[data-theme="dark"] {
  --bg: #0f172a;
  --card-bg: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --border: #334155;
  --accent: #60a5fa;
  --accent-text: #0b1220;
  --danger: #f87171;
  --ok: #4ade80;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.screen { min-height: 100vh; }

.login-box {
  max-width: 320px;
  margin: 15vh auto;
  padding: 2rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.login-box h1 { font-size: 1.1rem; margin: 0 0 0.5rem; }

input, button {
  font-size: 1rem;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}
input {
  background: var(--bg);
  color: var(--text);
}
button {
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  cursor: pointer;
}
button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
button:hover { filter: brightness(1.1); }
.error { color: var(--danger); font-size: 0.9rem; min-height: 1.2em; }

.apply-status {
  margin: 0 1.5rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-text);
  font-size: 0.9rem;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.apply-status.visible { visibility: visible; opacity: 1; }

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
}
.header-controls { display: flex; align-items: center; gap: 0.5rem; }
#lang-select { padding: 0.4rem 0.5rem; }
#theme-toggle-btn { font-size: 1rem; line-height: 1; padding: 0.4rem 0.55rem; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin: 0 1.5rem 1.5rem;
  padding: 1.25rem;
}
.card h2 { margin-top: 0; font-size: 1rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.03em; }

.btn-row { display: flex; gap: 0.5rem; margin: 0.75rem 0; flex-wrap: wrap; }

.group-block {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 0.75rem;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.group-main { flex: 1 1 360px; min-width: 0; }
.group-sidebar {
  flex: 0 0 200px;
  border-left: 1px solid var(--border);
  padding-left: 1.5rem;
}
.group-block h3 { margin: 0 0 0.5rem; font-size: 0.95rem; }
.group-type-row { display: flex; gap: 1rem; flex-wrap: wrap; align-items: flex-end; margin-bottom: 0.5rem; }
.group-type-row label { display: flex; flex-direction: column; gap: 0.2rem; font-size: 0.8rem; color: var(--muted); }
.group-type-fields { display: flex; gap: 1rem; flex-wrap: wrap; }

.group-members-list { list-style: none; padding: 0; margin: 0.5rem 0; display: flex; flex-direction: column; gap: 0.3rem; }
.group-member-row {
  background: var(--bg);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.group-member-row.active { outline: 1px solid var(--ok); }
.member-order { color: var(--muted); width: 1.5rem; }
.member-name { flex: 1; }
.member-status { color: var(--muted); font-size: 0.8rem; white-space: nowrap; }
.member-actions { display: flex; gap: 0.25rem; white-space: nowrap; }
.member-actions button { padding: 0.15rem 0.4rem; }

.group-sidebar-title { font-size: 0.75rem; text-transform: uppercase; color: var(--muted); margin: 0.75rem 0 0.25rem; }
.group-sidebar-title:first-child { margin-top: 0; }
.group-sidebar-now { font-size: 1.1rem; font-weight: 600; }
.status-line { font-size: 0.95rem; }
.output {
  background: var(--bg);
  border-radius: 8px;
  padding: 0.75rem;
  white-space: pre-wrap;
  font-size: 0.85rem;
  max-height: 240px;
  overflow-y: auto;
}

.card h3 { font-size: 0.9rem; color: var(--muted); margin: 1.25rem 0 0.5rem; text-transform: none; }
.hint { font-size: 0.85rem; color: var(--muted); margin: 0.25rem 0; }
code { background: var(--bg); padding: 0.1rem 0.35rem; border-radius: 4px; }
textarea {
  width: 100%;
  font-family: ui-monospace, monospace;
  font-size: 0.85rem;
  padding: 0.5rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  resize: vertical;
}
#proxy-preview { margin-top: 0.75rem; padding-top: 0.75rem; border-top: 1px solid var(--border); }
#proxy-preview-fields dl { display: grid; grid-template-columns: max-content 1fr; gap: 0.25rem 0.75rem; font-size: 0.9rem; }
#proxy-preview-fields dt { color: var(--muted); }
#proxy-preview-name { margin: 0.5rem 0; }

.rule-form { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; margin: 0.75rem 0; }
.rule-form input[type="text"] { flex: 1; min-width: 160px; }
/* #rule-value swaps between <input> and <select> depending on rule type (see
   renderRuleValueField in app.js) - the wrapper gets the sizing so both
   variants line up the same regardless of which element is inside it. */
#rule-value-wrap { flex: 1; min-width: 160px; }
#rule-value-wrap input, #rule-value-wrap select { width: 100%; }
.checkbox-label { display: flex; align-items: center; gap: 0.3rem; font-size: 0.9rem; color: var(--muted); }
.checkbox-label input { width: auto; padding: 0; }
button.small { padding: 0.2rem 0.55rem; font-size: 0.8rem; }
/* These buttons' label text changes while busy ("Test" -> "Testing...") -
   a fixed min-width keeps neighboring elements from shifting when that happens. */
.proxy-test-btn { min-width: 6rem; text-align: center; }
#reset-fixed-btn { min-width: 9rem; text-align: center; }
.rp-refresh-btn { min-width: 7rem; text-align: center; }
.rp-url-cell { max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.move-cell { white-space: nowrap; }
.move-cell button { padding: 0.15rem 0.4rem; margin-right: 0.15rem; }
button.danger { background: var(--danger); color: #fff; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }
.tag {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  background: var(--border);
}
.tag.ok { background: var(--ok); color: #06280f; }
.tag.bad { background: var(--danger); color: #2a0a08; }