:root {
  --bg:          #0d1117;
  --surface:     #161b22;
  --border:      #30363d;
  --text:        #c9d1d9;
  --text-muted:  #8b949e;
  --accent:      #58a6ff;
  --ok:          #3fb950;
  --warn:        #d29922;
  --error:       #f85149;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── header ── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .02em;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ── layout ── */
.layout {
  display: flex;
  flex: 1;
  overflow: hidden;
  height: calc(100vh - 45px);
}

/* ── sidebar ── */
aside {
  width: 220px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  overflow-y: auto;
  background: var(--surface);
}
.sidebar-head {
  padding: 10px 16px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
#report-list {
  list-style: none;
}
#report-list li {
  padding: 9px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: background .1s;
}
#report-list li:hover { background: rgba(255,255,255,.04); }
#report-list li.active { background: rgba(88,166,255,.1); border-left: 2px solid var(--accent); }
.date-label { font-family: 'SFMono-Regular', Consolas, monospace; font-size: 12px; }

/* ── main content ── */
main {
  flex: 1;
  overflow-y: auto;
  padding: 28px 36px;
}
.placeholder {
  color: var(--text-muted);
  font-size: 15px;
  margin-top: 80px;
  text-align: center;
}
.hidden { display: none !important; }

/* ── markdown body ── */
.md-body { max-width: 860px; line-height: 1.7; }

.md-body h1 { font-size: 22px; border-bottom: 1px solid var(--border); padding-bottom: 8px; margin: 0 0 20px; }
.md-body h2 { font-size: 18px; border-bottom: 1px solid var(--border); padding-bottom: 6px; margin: 28px 0 14px; }
.md-body h3 { font-size: 15px; margin: 20px 0 10px; }
.md-body p  { margin: 0 0 12px; }
.md-body ul, .md-body ol { margin: 0 0 12px 20px; }
.md-body li { margin-bottom: 4px; }
.md-body a  { color: var(--accent); text-decoration: none; }
.md-body a:hover { text-decoration: underline; }
.md-body code {
  background: rgba(255,255,255,.07);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 85%;
}
.md-body pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 16px;
  overflow-x: auto;
  margin: 0 0 16px;
}
.md-body pre code { background: none; padding: 0; }
.md-body blockquote {
  border-left: 3px solid var(--border);
  margin: 0 0 12px;
  padding: 4px 16px;
  color: var(--text-muted);
}
.md-body table { border-collapse: collapse; width: 100%; margin: 0 0 16px; }
.md-body th, .md-body td {
  padding: 7px 12px;
  border: 1px solid var(--border);
  text-align: left;
  font-size: 13px;
}
.md-body th { background: var(--surface); font-weight: 600; }
.md-body tr:hover td { background: rgba(255,255,255,.025); }
.md-body hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.md-body img { max-width: 100%; border-radius: 6px; }

/* ── misc ── */
.loading  { color: var(--text-muted); font-style: italic; padding: 8px 0; }
.empty    { color: var(--text-muted); padding: 8px 0; }
.status-running { color: var(--warn); font-size: 12px; }

.btn-primary {
  width: 100%;
  padding: 10px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
  transition: opacity .15s;
}
.btn-primary:hover { opacity: .85; }

.btn-secondary {
  background: var(--border);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 12px;
  cursor: pointer;
  font-size: 12px;
  transition: background .15s;
}
.btn-secondary:hover { background: #21262d; }
.btn-secondary:disabled { opacity: .4; cursor: not-allowed; }

.btn-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
}
.btn-link:hover { color: var(--text); }

/* ── login page ── */
body.login-page {
  justify-content: center;
  align-items: center;
}
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 36px 32px;
  width: 320px;
}
.login-card h1 { font-size: 20px; margin-bottom: 4px; }
.login-sub { color: var(--text-muted); font-size: 13px; margin-bottom: 24px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 5px; }
.field input {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.field input:focus { border-color: var(--accent); }
.login-error {
  background: rgba(248,81,73,.1);
  border: 1px solid var(--error);
  border-radius: 6px;
  color: var(--error);
  font-size: 13px;
  padding: 8px 12px;
  margin-bottom: 14px;
}

/* ── balance page ── */
.balance-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.balance-refresh-time {
  font-size: 12px;
  color: var(--text-muted);
}
.balance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  max-width: 960px;
}
.balance-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 20px;
}
.balance-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.balance-provider-name {
  font-size: 15px;
  font-weight: 600;
}
.balance-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
  letter-spacing: .02em;
}
.balance-badge-ok   { background: rgba(63,185,80,.15); color: var(--ok); }
.balance-badge-error{ background: rgba(248,81,73,.12); color: var(--error); }
.balance-badge-warn { background: rgba(210,153,34,.12); color: var(--warn); }
.balance-table {
  width: 100%;
  border-collapse: collapse;
}
.balance-table tr + tr td { border-top: 1px solid var(--border); }
.balance-label {
  padding: 7px 0;
  font-size: 13px;
  color: var(--text-muted);
  width: 50%;
}
.balance-value {
  padding: 7px 0;
  font-size: 13px;
  font-family: 'SFMono-Regular', Consolas, monospace;
  text-align: right;
}
.balance-total {
  font-size: 16px;
  font-weight: 700;
  color: var(--ok);
}
.balance-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── responsive ── */
@media (max-width: 640px) {
  .layout { flex-direction: column; height: auto; }
  aside { width: 100%; height: 160px; border-right: none; border-bottom: 1px solid var(--border); }
  main  { padding: 16px; }
}