:root {
  --bg: #f3efe4;
  --paper: #fffdf7;
  --ink: #1f2d25;
  --accent: #0f7a5a;
  --accent-soft: #d6f0e8;
  --line: #d7d0bf;
  --warn: #9a6f2f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 20%, #f4e9ce 0 22%, transparent 23%),
    radial-gradient(circle at 90% 10%, #dcecdc 0 18%, transparent 19%),
    var(--bg);
}

.app {
  width: min(1500px, 96vw);
  margin: 1.5rem auto;
  display: grid;
  gap: 1rem;
}

.hero {
  background: linear-gradient(120deg, #214f3d, #1f2d25);
  color: #f8f6ef;
  border-radius: 14px;
  padding: 1.4rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.hero p {
  margin: 0.35rem 0 0;
}

.panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
}

label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.45rem;
}

textarea,
input,
select,
button {
  font: inherit;
}

textarea {
  width: 100%;
  min-height: 240px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem;
  background: #fff;
}

.interval input {
  width: min(280px, 100%);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
}

.hint {
  margin: 0.45rem 0 0;
  color: #4f5f54;
  font-size: 0.92rem;
}

.controls,
.table-tools {
  margin-top: 0.7rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

button {
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  padding: 0.55rem 0.85rem;
  font-weight: 700;
  cursor: pointer;
}

button.secondary {
  background: #2f3d35;
}

button.link {
  background: none;
  color: var(--accent);
  padding: 0;
  font-weight: normal;
  text-decoration: underline;
  cursor: pointer;
  border-radius: 0;
}

.status {
  border-left: 6px solid var(--accent);
}

.table-wrap {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1200px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 0.55rem;
  vertical-align: top;
}

th {
  background: var(--accent-soft);
  position: sticky;
  top: 0;
}

th.sortable {
  cursor: pointer;
  user-select: none;
}

th.sortable:hover {
  background: #c8e9dd;
}

tr.locked {
  background: #f9f4e8;
  color: #6f624a;
}

td.time-exceeds-interval {
  color: #b42318;
  font-weight: 700;
}

.chip {
  margin-left: 0.4rem;
  font-size: 0.75rem;
  padding: 0.1rem 0.45rem;
  border-radius: 100px;
  border: 1px solid var(--warn);
  color: var(--warn);
}

@media (max-width: 780px) {
  .app {
    width: 94vw;
    margin: 1rem auto;
  }

  textarea {
    min-height: 200px;
  }
}