:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --ink: #17202a;
  --muted: #667085;
  --line: #d7dde5;
  --blue: #1b66d2;
  --green: #14835c;
  --red: #c2413a;
  --amber: #b26a00;
  --shadow: 0 18px 45px rgba(31, 41, 55, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 40px;
}

.topbar,
.controls,
.summary,
.dashboard {
  display: grid;
  gap: 16px;
}

.topbar {
  grid-template-columns: 1fr auto;
  align-items: end;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(28px, 5vw, 46px);
  line-height: 1.05;
}

h2 {
  font-size: 18px;
}

.status {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 13px;
  text-align: right;
}

.controls {
  grid-template-columns: 180px 1fr auto;
  align-items: end;
  margin-bottom: 16px;
}

.controls,
.panel,
.summary article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.controls {
  padding: 14px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

select,
input {
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  padding: 0 10px;
}

button {
  height: 40px;
  border: 0;
  border-radius: 6px;
  background: var(--blue);
  color: #fff;
  cursor: pointer;
  font-weight: 800;
  padding: 0 16px;
}

#addSymbolForm,
.thresholds {
  display: flex;
  align-items: end;
  gap: 10px;
}

#addSymbolForm input {
  width: min(220px, 38vw);
}

.thresholds input {
  width: 70px;
}

.thresholds label {
  grid-template-columns: auto;
}

.thresholds label:first-child {
  grid-template-columns: auto auto auto;
  align-items: end;
}

.thresholds label:first-child span {
  padding-bottom: 10px;
}

.summary {
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: 16px;
}

.summary article {
  padding: 16px;
}

.summary span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 6px;
}

.summary strong {
  display: block;
  font-size: 24px;
  line-height: 1.1;
}

.dashboard {
  grid-template-columns: minmax(0, 1fr) 330px;
  margin-bottom: 16px;
}

.panel {
  padding: 16px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
  margin-bottom: 12px;
}

.panel-head p {
  color: var(--muted);
  font-size: 13px;
  margin-top: 3px;
}

.badge {
  border-radius: 999px;
  padding: 6px 10px;
  background: #eef3fb;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  white-space: nowrap;
}

.badge.warning {
  background: #fff4df;
  color: var(--amber);
}

.badge.danger {
  background: #ffe7e5;
  color: var(--red);
}

#priceChart {
  width: 100%;
  height: 410px;
  display: block;
}

.axis {
  stroke: #aeb7c2;
  stroke-width: 1;
}

.grid {
  stroke: #e8edf3;
  stroke-width: 1;
}

.price-line {
  fill: none;
  stroke: var(--blue);
  stroke-width: 3;
}

.k-line {
  fill: none;
  stroke: var(--green);
  stroke-width: 2.5;
}

.d-line {
  fill: none;
  stroke: var(--amber);
  stroke-width: 2.5;
}

.bar {
  fill: #9db7dd;
}

.chart-label {
  fill: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.legend {
  fill: var(--ink);
  font-size: 12px;
  font-weight: 800;
}

.alerts ul,
#alertsList {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

#alertsList li {
  border: 1px solid var(--line);
  border-left: 4px solid var(--green);
  border-radius: 6px;
  padding: 10px;
  background: #fbfcfe;
}

#alertsList li.warning {
  border-left-color: var(--amber);
}

#alertsList li.danger {
  border-left-color: var(--red);
}

#alertsList strong {
  display: block;
  font-size: 14px;
}

#alertsList span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 3px;
}

.hint {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
  margin-top: 14px;
}

.table-panel {
  overflow: hidden;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 820px;
}

th,
td {
  border-top: 1px solid var(--line);
  padding: 12px 10px;
  text-align: right;
  white-space: nowrap;
}

th:first-child,
td:first-child {
  text-align: left;
}

th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.up {
  color: var(--green);
  font-weight: 800;
}

.down {
  color: var(--red);
  font-weight: 800;
}

@media (max-width: 920px) {
  .topbar,
  .controls,
  .dashboard,
  .summary {
    grid-template-columns: 1fr;
  }

  .status {
    text-align: left;
  }

  #addSymbolForm,
  .thresholds {
    flex-wrap: wrap;
  }

  #priceChart {
    height: 360px;
  }
}

@media (max-width: 560px) {
  .shell {
    width: min(100% - 20px, 1180px);
    padding-top: 18px;
  }

  .panel,
  .controls,
  .summary article {
    padding: 12px;
  }

  .summary strong {
    font-size: 20px;
  }
}