:root {
  --color-open: #d7f5dd;
  --color-tight: #fff3c4;
  --color-over: #fbd5d5;
  --color-border: #d0d0d0;
  --color-text: #1c1c1c;
  --color-bg: #ffffff;
  --color-bg-muted: #f6f6f6;
  --color-accent: #2d5ef9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-open: #16351f;
    --color-tight: #453b12;
    --color-over: #401d1d;
    --color-border: #3a3a3a;
    --color-text: #eaeaea;
    --color-bg: #141414;
    --color-bg-muted: #1d1d1d;
  }
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
}

header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

header h1 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
}

#tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--color-border);
  background: transparent;
  color: inherit;
  border-radius: 6px;
  cursor: pointer;
}

.tab-btn.active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

main {
  padding: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.tab-panel[hidden] {
  display: none;
}

form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
  margin-bottom: 1rem;
}

form label {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  gap: 0.25rem;
}

input,
button {
  font: inherit;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-bg);
  color: inherit;
}

button {
  cursor: pointer;
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

button[type="button"] {
  background: transparent;
  color: inherit;
  border-color: var(--color-border);
}

.override-form {
  margin-bottom: 1rem;
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
}

.override-form form {
  margin: 0.75rem 0 0;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--color-border);
}

tr.status-open td:last-child {
  background: var(--color-open);
}

tr.status-tight td:last-child {
  background: var(--color-tight);
}

tr.status-over td:last-child {
  background: var(--color-over);
}

.banner {
  padding: 0.75rem 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
}

.banner-error {
  background: var(--color-over);
}

.banner-success {
  background: var(--color-open);
}

.fanout-steps {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0;
}

.fanout-steps li {
  padding: 0.3rem 0;
}

.fanout-steps .status-success::before {
  content: "✓ ";
}

.fanout-steps .status-failed::before {
  content: "✗ ";
}

.fanout-steps .status-pending::before {
  content: "… ";
}

#gantt-container {
  overflow-x: auto;
}

.gantt-grid {
  display: grid;
  grid-auto-rows: 2.25rem;
  gap: 2px;
  align-items: center;
}

.gantt-week-header,
.gantt-week-bg {
  font-size: 0.7rem;
  text-align: center;
  padding: 0.25rem 0;
  border-radius: 3px;
}

.gantt-week-bg.status-open {
  background: var(--color-open);
}

.gantt-week-bg.status-tight {
  background: var(--color-tight);
}

.gantt-week-bg.status-over {
  background: var(--color-over);
}

.gantt-bar {
  background: var(--color-accent);
  color: #fff;
  border-radius: 4px;
  padding: 0 0.4rem;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  white-space: nowrap;
  overflow: hidden;
  height: 100%;
}

.gantt-row-label {
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  padding-right: 0.5rem;
  white-space: nowrap;
}