/* NERVER · Admin console
 * M2 · minimal usable dark theme; full NERVER restyle is deferred to M6.
 * Palette locked to: bg #0a0b0d / fg #e6e6e6 / ok #4dffb0 / err #ff5c5c / wait #ffb84d
 * 1px hairline cards, 6px radius, no shadow, system-first sans stack.
 */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

:root {
  --bg: #0a0b0d;
  --bg-elev: #101115;
  --bg-hover: #16181d;
  --fg: #e6e6e6;
  --fg-muted: #9a9ea6;
  --fg-dim: #6b6f78;
  --line: #23262d;
  --line-strong: #33373f;
  --ok: #4dffb0;
  --err: #ff5c5c;
  --wait: #ffb84d;
  --accent: #e6e6e6;
  --radius: 6px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
               "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo,
               Consolas, "Liberation Mono", monospace;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: 0.01em;
}

body[data-view="loading"] { visibility: hidden; }

button {
  font: inherit;
  color: inherit;
  background: transparent;
  border: none;
  cursor: pointer;
}
input, select, textarea {
  font: inherit;
  color: inherit;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 10px;
  outline: none;
  width: 100%;
}
input:focus, select:focus, textarea:focus { border-color: var(--line-strong); }
textarea { resize: vertical; min-height: 60px; font-family: var(--font-mono); }
select { appearance: none; padding-right: 26px;
  background-image: linear-gradient(45deg, transparent 50%, var(--fg-muted) 50%),
                    linear-gradient(135deg, var(--fg-muted) 50%, transparent 50%);
  background-position: right 12px top 50%, right 8px top 50%;
  background-size: 4px 4px, 4px 4px;
  background-repeat: no-repeat;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0;
}

/* -------------------- 登录 -------------------- */

.login-view {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}
.login-card {
  width: 100%;
  max-width: 380px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.login-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.login-brand b { display: block; font-size: 16px; letter-spacing: 0.04em; }
.login-brand small { display: block; color: var(--fg-muted); font-size: 11px; letter-spacing: 0.12em; }
.login-hint { color: var(--fg-dim); font-size: 12px; margin: 0; }

/* -------------------- 主界面骨架 -------------------- */

.app-view { min-height: 100vh; display: flex; flex-direction: column; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.topbar-brand { display: flex; align-items: center; gap: 12px; }
.topbar-brand b { display: block; font-size: 15px; letter-spacing: 0.04em; }
.topbar-brand small { display: block; color: var(--fg-muted); font-size: 11px; letter-spacing: 0.12em; }
.topbar-right { display: flex; align-items: center; gap: 10px; }

.layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  flex: 1;
  min-height: 0;
}

.side-nav {
  padding: 16px 12px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 100%;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius);
  color: var(--fg-muted);
  font-size: 13px;
  letter-spacing: 0.02em;
  text-align: left;
  border: 1px solid transparent;
}
.nav-item:hover { background: var(--bg-hover); color: var(--fg); }
.nav-item.active {
  background: var(--bg-elev);
  color: var(--fg);
  border-color: var(--line);
}
.nav-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--fg-dim);
}
.nav-item.active .nav-dot { background: var(--ok); }

.content { padding: 22px 28px 40px; overflow-x: auto; }

/* -------------------- 通用组件 -------------------- */

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.section-head h1 { font-size: 20px; margin: 0; font-weight: 600; letter-spacing: 0.02em; }
.section-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.section-actions .select,
.section-actions .input { width: auto; min-width: 160px; }

.tab-panel[hidden] { display: none; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-elev);
  color: var(--fg);
  font-size: 13px;
  letter-spacing: 0.02em;
  transition: background 0.12s ease, border-color 0.12s ease;
}
.btn:hover:not(:disabled) { background: var(--bg-hover); border-color: var(--line-strong); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { border-color: var(--fg); }
.btn-primary:hover:not(:disabled) { background: var(--fg); color: var(--bg); }
.btn-ghost { background: transparent; }
.btn-danger { border-color: var(--err); color: var(--err); }
.btn-danger:hover:not(:disabled) { background: var(--err); color: var(--bg); }
.btn-warn { border-color: var(--wait); color: var(--wait); }
.btn-warn:hover:not(:disabled) { background: var(--wait); color: var(--bg); }

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field > span {
  font-size: 12px;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
  display: flex;
  gap: 8px;
  align-items: baseline;
}
.field > span small { color: var(--fg-dim); font-weight: normal; }

.chip {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.06em;
  border: 1px solid var(--line);
}
.chip-muted { color: var(--fg-muted); }
.chip-ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.chip-err { color: var(--err); border-color: color-mix(in srgb, var(--err) 40%, transparent); }
.chip-wait { color: var(--wait); border-color: color-mix(in srgb, var(--wait) 40%, transparent); }

.quiet { color: var(--fg-dim); font-size: 12px; }
.mono { font-family: var(--font-mono); }

.form-error, .notice {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 13px;
}
.notice-error, .form-error {
  color: var(--err);
  border-color: color-mix(in srgb, var(--err) 45%, var(--line));
  background: color-mix(in srgb, var(--err) 6%, transparent);
}
.notice-ok {
  color: var(--ok);
  border-color: color-mix(in srgb, var(--ok) 40%, var(--line));
  background: color-mix(in srgb, var(--ok) 6%, transparent);
}

/* -------------------- 概览 stat 卡 -------------------- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  max-width: 900px;
}
.stat-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.stat-card strong {
  font-size: 32px;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}
.stat-label {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fg-muted);
  text-transform: uppercase;
}
.stat-card[data-kind="active"] strong { color: var(--ok); }
.stat-card[data-kind="exhausted"] strong { color: var(--wait); }

/* -------------------- 表格 -------------------- */

.table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
  overflow-x: auto;
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.table thead th {
  text-align: left;
  padding: 10px 12px;
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
  border-bottom: 1px solid var(--line);
  background: var(--bg-elev);
  position: sticky;
  top: 0;
}
.table tbody td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.table tbody tr:hover td { background: var(--bg-hover); }
.table tbody tr:last-child td { border-bottom: none; }
.table .empty-row td { text-align: center; color: var(--fg-dim); padding: 22px 0; }
.table td .code-cell {
  font-family: var(--font-mono);
  color: var(--fg);
}
.table td .row-actions {
  display: inline-flex;
  gap: 6px;
  flex-wrap: wrap;
}
.table td .row-actions .btn { padding: 4px 10px; font-size: 12px; }

.pager {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

/* -------------------- Drawer -------------------- */

.drawer[hidden] { display: none; }
.drawer {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  justify-content: flex-end;
}
.drawer-scrim {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
}
.drawer-panel {
  position: relative;
  width: min(440px, 100%);
  background: var(--bg);
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  animation: drawer-in 0.15s ease-out;
}
@keyframes drawer-in { from { transform: translateX(20px); opacity: 0.6; } to { transform: none; opacity: 1; } }
.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}
.drawer-head h2 { margin: 0; font-size: 15px; letter-spacing: 0.04em; }
.drawer-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow-y: auto;
}
.drawer-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 4px;
}

/* -------------------- Modal -------------------- */

.modal[hidden] { display: none; }
.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal-scrim {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
}
.modal-card {
  position: relative;
  width: min(560px, 100%);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.modal-head h2 { margin: 0; font-size: 15px; letter-spacing: 0.04em; }
.modal-warn {
  color: var(--wait);
  font-size: 12px;
  margin: 0;
  padding: 8px 10px;
  border: 1px solid color-mix(in srgb, var(--wait) 40%, var(--line));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--wait) 6%, transparent);
}
.modal-codes {
  min-height: 160px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
}
.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* -------------------- Toast -------------------- */

.toast[hidden] { display: none; }
.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 60;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
  color: var(--fg);
  font-size: 13px;
  max-width: 320px;
  animation: toast-in 0.15s ease-out;
}
.toast.toast-ok { border-color: color-mix(in srgb, var(--ok) 50%, var(--line)); }
.toast.toast-err { border-color: color-mix(in srgb, var(--err) 50%, var(--line)); color: var(--err); }
@keyframes toast-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* -------------------- 响应式 -------------------- */

@media (max-width: 720px) {
  .layout { grid-template-columns: 1fr; }
  .side-nav {
    flex-direction: row;
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding: 10px 12px;
    overflow-x: auto;
  }
  .content { padding: 16px 14px 32px; }
  .section-head h1 { font-size: 18px; }
}