:root {
  --bg: #e8e2d6;
  --bg-deep: #d9d1c1;
  --ink: #1b1a17;
  --muted: #5d574c;
  --line: rgba(27, 26, 23, 0.12);
  --panel: rgba(255, 251, 244, 0.82);
  --panel-strong: #fffbf4;
  --accent: #b45309;
  --ok: #166534;
  --danger: #b91c1c;
  --shadow: 0 18px 50px rgba(40, 28, 10, 0.12);
  --radius: 18px;
  --font: "IBM Plex Sans", Tahoma, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
[hidden] { display: none !important; }
body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, rgba(180, 83, 9, 0.18), transparent 35%),
    radial-gradient(circle at 90% 10%, rgba(15, 118, 110, 0.14), transparent 30%),
    linear-gradient(160deg, var(--bg), var(--bg-deep));
}

.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(27, 26, 23, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 26, 23, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, black, transparent 85%);
}

.login-only {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  position: relative;
}

.login-card {
  width: min(420px, 100%);
  background: var(--panel);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 1.6rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  position: relative;
}

.login-brand {
  display: flex;
  gap: 0.85rem;
  align-items: center;
  margin-bottom: 0.3rem;
}

.login-card h1 {
  margin: 0;
  font-size: 1.35rem;
}

.shell {
  position: relative;
  width: min(1240px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0 3rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.brand, .login-brand { display: flex; gap: 0.85rem; align-items: center; }
.brand-mark {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-weight: 600;
  color: #fffbf4;
  background: linear-gradient(145deg, #b45309, #7c2d12);
  box-shadow: var(--shadow);
}
.brand-name {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}
.brand-sub {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.2rem;
}

.top-actions {
  display: flex;
  gap: 0.7rem;
  align-items: end;
  flex-wrap: wrap;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: var(--muted);
}
.field.compact { min-width: 120px; }
.field input,
.field select {
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--ink);
  border-radius: 12px;
  padding: 0.65rem 0.8rem;
  font: inherit;
}
.field input:focus,
.field select:focus {
  outline: 2px solid rgba(180, 83, 9, 0.25);
  border-color: rgba(180, 83, 9, 0.45);
}

.btn {
  border: 0;
  border-radius: 12px;
  padding: 0.7rem 1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary {
  background: linear-gradient(145deg, #b45309, #9a3412);
  color: #fff7ed;
}
.btn.ghost {
  background: rgba(255, 251, 244, 0.7);
  border: 1px solid var(--line);
  color: var(--ink);
}

.dashboard { display: flex; flex-direction: column; gap: 1rem; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}
.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
}
.stat-label {
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 0.45rem;
}
.stat-value {
  font-family: var(--mono);
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.04em;
}
.stat-meta {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem 1.2rem;
  box-shadow: var(--shadow);
}
.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  margin-bottom: 0.9rem;
  flex-wrap: wrap;
}
.panel-head h2 {
  margin: 0;
  font-size: 1.05rem;
}
.hint { color: var(--muted); font-size: 0.8rem; }

.fee-form {
  display: grid;
  grid-template-columns: 1.4fr 1fr 0.8fr auto;
  gap: 0.9rem;
  align-items: end;
}
.fee-row {
  display: grid;
  grid-template-columns: 1fr 88px auto;
  gap: 0.55rem;
  align-items: center;
}
.unit { color: var(--muted); font-family: var(--mono); }
.status-line {
  grid-column: 1 / -1;
  margin: 0;
  min-height: 1.2em;
  color: var(--ok);
  font-size: 0.85rem;
}
.error { color: var(--danger); margin: 0; }

.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
th, td {
  text-align: right;
  padding: 0.75rem 0.4rem;
  border-bottom: 1px solid var(--line);
}
th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.8rem;
}
td:nth-child(2), th:nth-child(2) {
  font-family: var(--mono);
}

.charts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.chart-card canvas {
  width: 100% !important;
  max-height: 280px;
}
.chart-card.wide {
  grid-column: 1 / -1;
}
.chart-card.wide canvas {
  max-height: 340px;
}

.foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.8rem;
  flex-wrap: wrap;
  padding: 0.4rem 0.2rem;
}

@media (max-width: 960px) {
  .hero-stats,
  .charts,
  .fee-form {
    grid-template-columns: 1fr;
  }
  .chart-card.wide { grid-column: auto; }
}