:root {
  --ink: #24150f;
  --muted: #6f5b4f;
  --paper: #fffaf0;
  --paper-2: #f2e5c7;
  --navy: #18283c;
  --navy-2: #243e5b;
  --gold: #d69d2e;
  --gold-dark: #8a5a12;
  --red: #a13b2a;
  --green: #2f7657;
  --line: #cbb98f;
  --shadow: rgba(38, 23, 14, .18);
}

* { box-sizing: border-box; }
html { min-height: 100%; background: #d7c6a3; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font: 15px/1.5 "Microsoft YaHei", "Noto Sans SC", Tahoma, sans-serif;
  background:
    linear-gradient(rgba(255,255,255,.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.16) 1px, transparent 1px),
    #d8c8a6;
  background-size: 24px 24px;
}

a { color: #27577f; }
button, input, select, textarea { font: inherit; }
button, .button {
  border: 1px solid #65471d;
  border-radius: 3px;
  color: #fff9e7;
  background: linear-gradient(#e3ac42, #a76c18);
  box-shadow: inset 0 1px rgba(255,255,255,.5), 0 1px 2px var(--shadow);
  padding: .55rem .9rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button:hover, .button:hover { filter: brightness(1.07); }
button.danger, .button.danger { background: linear-gradient(#c9634f, #8e2f21); }
button.secondary, .button.secondary { background: linear-gradient(#506d89, #29455f); }
button:disabled { opacity: .55; cursor: not-allowed; }

input, select, textarea {
  width: 100%;
  border: 1px solid #a68d63;
  border-radius: 2px;
  background: #fffdf7;
  color: var(--ink);
  padding: .55rem .65rem;
  box-shadow: inset 0 1px 2px rgba(0,0,0,.08);
}
textarea { min-height: 100px; resize: vertical; }
label { color: var(--muted); font-weight: 700; display: block; margin-bottom: .25rem; }

.app-shell { display: grid; grid-template-columns: 255px minmax(0, 1fr); min-height: 100vh; }
.sidebar {
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
  color: #f8eacb;
  background: linear-gradient(110deg, rgba(255,255,255,.04), transparent 35%), var(--navy);
  border-right: 4px ridge #bb8a38;
  box-shadow: 4px 0 12px rgba(0,0,0,.28);
}
.brand { padding: 1.5rem 1.2rem 1rem; border-bottom: 1px solid #40546b; }
.brand-mark { font-family: Georgia, serif; font-size: 1.65rem; letter-spacing: .08em; color: #ffd77b; text-shadow: 0 2px #5d3806; }
.brand-sub { color: #b8c7d4; font-size: .78rem; text-transform: uppercase; letter-spacing: .15em; }
.nav-section { margin: 1rem .7rem .3rem; color: #98adbf; font-size: .7rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.nav-link { display: block; color: #f8eacb; padding: .55rem 1.2rem; text-decoration: none; border-left: 3px solid transparent; }
.nav-link:hover, .nav-link.active { background: #263e58; border-left-color: var(--gold); color: #fff; }
.sidebar-foot { margin: 1rem; padding-top: 1rem; border-top: 1px solid #40546b; color: #b8c7d4; font-size: .82rem; }
.sidebar-foot form { margin-top: .6rem; }

.main { min-width: 0; }
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  min-height: 66px; padding: .8rem 1.4rem;
  background: rgba(255,250,240,.94); border-bottom: 1px solid var(--line);
  box-shadow: 0 2px 8px var(--shadow);
}
.topbar h1 { margin: 0; font: 700 1.35rem Georgia, "Microsoft YaHei", serif; color: var(--navy); }
.topbar .identity { color: var(--muted); font-size: .85rem; text-align: right; }
.content { padding: 1.4rem; max-width: 1680px; margin: 0 auto; }

.panel {
  background: var(--paper); border: 1px solid #af966a; border-radius: 3px;
  box-shadow: 0 3px 10px var(--shadow); margin-bottom: 1.2rem;
}
.panel-title {
  margin: 0; padding: .7rem 1rem; color: #fff9e7;
  font: 700 1rem Georgia, "Microsoft YaHei", serif;
  background: linear-gradient(#344d68, #1d3148); border-bottom: 3px double #c99b49;
}
.panel-body { padding: 1rem; }
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stat { padding: .9rem; background: #fffdf7; border: 1px solid #d8c7a2; box-shadow: inset 0 0 18px rgba(210,181,118,.12); }
.stat-label { color: var(--muted); font-size: .8rem; }
.stat-value { font: 700 1.5rem Georgia, serif; color: var(--navy); }
.status-dot { display: inline-block; width: .65rem; height: .65rem; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 2px rgba(161,59,42,.15); }
.status-dot.online { background: var(--green); box-shadow: 0 0 0 2px rgba(47,118,87,.18); }
.status-text.online { color: var(--green); font-weight: 800; }
.status-text.offline { color: var(--red); font-weight: 800; }

.flash { padding: .75rem 1rem; margin-bottom: 1rem; border: 1px solid; background: #fff; }
.flash.success { color: #245c44; border-color: #67a483; background: #edf8f1; }
.flash.error { color: #7b291e; border-color: #c97b6e; background: #fff0ed; }
.warning { padding: .8rem 1rem; border-left: 4px solid var(--gold); background: #fff3d2; color: #65471d; }
.danger-box { padding: .8rem 1rem; border-left: 4px solid var(--red); background: #fdecea; color: #6f2118; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: .58rem .65rem; border-bottom: 1px solid #dfd1b3; text-align: left; vertical-align: top; }
th { color: #fff; background: #52677c; font-size: .78rem; letter-spacing: .02em; white-space: nowrap; }
tbody tr:nth-child(even) { background: rgba(231,215,180,.23); }
tbody tr:hover { background: #fff4d6; }
.mono { font-family: Consolas, "Courier New", monospace; font-size: .85rem; }
.muted { color: var(--muted); }
.small { font-size: .8rem; }
.badge { display: inline-block; border: 1px solid #a88d5e; padding: .08rem .42rem; background: #f8eaca; font-size: .75rem; border-radius: 10px; }
.badge.good { color: #23563f; border-color: #68a285; background: #eaf6ef; }
.badge.bad { color: #7d281d; border-color: #c7796c; background: #fcecea; }
.badge.danger { color: #fff; border-color: #692017; background: var(--red); }

.form-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: .8rem; align-items: end; }
.form-grid .wide { grid-column: span 2; }
.actions { display: flex; gap: .45rem; flex-wrap: wrap; align-items: center; }
.inline-form { display: inline-flex; gap: .35rem; align-items: center; flex-wrap: wrap; }
.inline-form input, .inline-form select { width: auto; min-width: 100px; }
.auto-width { width: auto; min-width: 0; vertical-align: middle; }
.reward-tabs { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: 1rem; }
.reward-tabs a { padding: .55rem .9rem; border: 1px solid #a88d5e; background: #f8eaca; color: var(--navy); text-decoration: none; font-weight: 800; }
.reward-tabs a.active { color: #fff9e7; background: var(--navy-2); border-color: var(--gold-dark); }
.reward-form { margin-top: 1rem; }
.reward-danger { margin-top: 1rem; }
.reward-summary { margin: 1rem 0; }
details { border: 1px solid #d4c29c; background: #fffdf7; margin-bottom: .65rem; }
summary { padding: .65rem .8rem; font-weight: 800; cursor: pointer; color: var(--navy); }
details > .details-body { padding: 0 .8rem .8rem; }

.login-page { display: grid; place-items: center; min-height: 100vh; padding: 1rem; background: radial-gradient(circle at top, #344c66, #142235 65%); }
.login-card { width: min(430px, 100%); background: var(--paper); border: 4px ridge #be9146; box-shadow: 0 16px 50px rgba(0,0,0,.45); }
.login-head { text-align: center; padding: 1.5rem; color: #ffe39c; background: var(--navy); border-bottom: 3px double var(--gold); }
.login-head h1 { margin: 0; font: 700 2rem Georgia, serif; letter-spacing: .08em; }
.login-head p { margin: .3rem 0 0; color: #bdcad6; font-size: .8rem; letter-spacing: .12em; }
.login-body { padding: 1.4rem; }
.field { margin-bottom: .9rem; }
.login-body button { width: 100%; margin-top: .4rem; }
.login-note { margin-top: 1rem; color: var(--muted); font-size: .76rem; text-align: center; }

.log-view { max-height: 65vh; overflow: auto; white-space: pre-wrap; word-break: break-word; background: #121a22; color: #d8e1e8; padding: 1rem; border: 3px ridge #7c6946; }

@media (max-width: 1100px) {
  .app-shell { grid-template-columns: 210px minmax(0, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .form-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 760px) {
  .app-shell { display: block; }
  .sidebar { position: static; width: 100%; height: auto; border-right: 0; border-bottom: 4px ridge #bb8a38; }
  .brand { padding: 1rem; }
  .nav-section, .sidebar-foot { display: none; }
  .nav-link { display: inline-block; padding: .45rem .7rem; }
  .topbar { padding: .65rem .8rem; }
  .content { padding: .8rem; }
  .grid-2, .grid-3, .grid-4, .form-grid { grid-template-columns: 1fr; }
  .form-grid .wide { grid-column: auto; }
}