:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #18202f;
  --muted: #667085;
  --border: #d8deea;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --soft: #eef4ff;
  --shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #edf4ff 0%, var(--bg) 260px);
}

.page {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 4vw, 42px);
}

.hero p,
.section-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.panel,
.stat-card {
  background: var(--panel);
  border: 1px solid rgba(216, 222, 234, 0.85);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.panel {
  padding: 20px;
  margin-bottom: 18px;
}

.panel h2 {
  margin: 0 0 14px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.pin-box {
  min-width: 260px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.pin-box label,
.form-grid label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.pin-row {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-grid.compact {
  margin-top: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.wide {
  grid-column: 1 / -1;
}

input {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  background: #fff;
  font-size: 15px;
  outline: none;
}

input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

button,
.button-link {
  height: 42px;
  padding: 0 16px;
  border: 0;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

button:hover,
.button-link:hover {
  background: var(--primary-dark);
}

button.secondary {
  color: var(--text);
  background: #e8edf6;
}

button.secondary:hover {
  background: #dce3ee;
}

button.danger {
  background: var(--danger);
}

.form-actions {
  display: flex;
  gap: 10px;
  align-items: end;
}

.range-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.range-buttons button {
  background: var(--soft);
  color: var(--primary);
}

.range-buttons button.active {
  background: var(--primary);
  color: #fff;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.stat-card {
  padding: 18px;
}

.stat-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.stat-card strong {
  font-size: 22px;
  word-break: break-word;
}

.chart-wrap {
  height: 360px;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
}

#feeChart {
  display: block;
  width: 100%;
  height: 100%;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th,
td {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-size: 13px;
  background: #f8fafc;
}

td.actions {
  display: flex;
  gap: 8px;
}

td.actions button {
  height: 34px;
  padding: 0 12px;
}

.empty {
  text-align: center;
  color: var(--muted);
  padding: 28px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  max-width: min(520px, calc(100% - 28px));
  padding: 12px 16px;
  border-radius: 12px;
  color: #fff;
  background: rgba(15, 23, 42, 0.92);
  box-shadow: var(--shadow);
  z-index: 20;
}

.hidden {
  display: none !important;
}

@media (max-width: 900px) {
  .hero,
  .section-head {
    flex-direction: column;
  }

  .pin-box {
    width: 100%;
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .form-grid,
  .form-grid.compact {
    grid-template-columns: 1fr;
  }

  .wide {
    grid-column: auto;
  }
}

@media (max-width: 520px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .form-actions,
  .pin-row {
    flex-direction: column;
  }

  button,
  .button-link {
    width: 100%;
  }
}