:root {
  --bg: #ececec;
  --text: #151515;
  --card-border: #111;
  --day-border: #c9c9c9;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px) 0 0 / 58px 58px,
    linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px) 0 0 / 58px 58px,
    var(--bg);
}

.topbar {
  max-width: 1800px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

h1 { margin: 0; font-size: 28px; }

.year-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.year-wrap input,
.year-wrap button,
select,
input,
textarea,
button {
  padding: 6px 10px;
  border: 1px solid #444;
  border-radius: 6px;
  font-size: 14px;
}

.year-wrap button,
.stack-form button,
.button-grid button,
.small-btn {
  cursor: pointer;
  background: #1f1f1f;
  color: #fff;
}

.control-grid {
  max-width: 1800px;
  margin: 0 auto;
  padding: 0 16px 12px;
  display: grid;
  grid-template-columns: repeat(5, minmax(210px, 1fr));
  gap: 12px;
}

.control-card {
  background: #fff;
  border: 2px solid #151515;
  border-radius: 10px;
  overflow: hidden;
}

.control-card > summary {
  list-style: none;
  cursor: pointer;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
}

.control-card > summary::-webkit-details-marker { display: none; }
.control-card > summary::after { content: "+"; font-size: 20px; line-height: 1; }
.control-card[open] > summary::after { content: "−"; }

.summary-meta {
  margin-left: auto;
  margin-right: 10px;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid #777;
  background: #f6f6f6;
}

.panel-content {
  padding: 0 12px 12px;
  border-top: 1px solid #d8d8d8;
}

.stack-form {
  display: grid;
  gap: 6px;
}

.stack-form label,
.panel-content > label,
.legend-block h3,
.insights-block h3 {
  margin-top: 8px;
  font-size: 13px;
  font-weight: 700;
}

.inline-check {
  display: flex;
  align-items: center;
  gap: 6px;
}

.secondary-btn {
  background: #f4f4f4 !important;
  color: #111 !important;
}

.button-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}

.small-btn {
  margin-top: 8px;
  font-size: 12px;
  padding: 5px 8px;
}

.data-list,
.info-list {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  max-height: 230px;
  overflow: auto;
}

.data-list li,
.info-list li {
  padding: 8px 0;
  border-bottom: 1px solid #e4e4e4;
  font-size: 13px;
}

.data-list li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}

.data-list li:last-child,
.info-list li:last-child { border-bottom: 0; }

.list-text { overflow-wrap: anywhere; }

.list-actions {
  display: flex;
  gap: 6px;
}

.tiny-btn {
  border: 1px solid #666;
  border-radius: 5px;
  font-size: 12px;
  padding: 4px 7px;
  background: #fff;
  cursor: pointer;
  color: #111;
}

.chip-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.chip {
  border: 1px solid #777;
  border-radius: 999px;
  padding: 4px 8px;
  font-size: 12px;
  background: #f4f4f4;
  cursor: pointer;
}

.chip.active {
  background: #111;
  color: #fff;
}

.inner-details { margin-top: 6px; }
.inner-details summary { cursor: pointer; font-size: 13px; font-weight: 700; }
.inner-content { margin-top: 6px; display: grid; gap: 6px; }

.status-text {
  margin: 10px 0 0;
  font-size: 13px;
  min-height: 18px;
}

main { padding: 8px; }

.legend-bar {
  max-width: 1800px;
  margin: 0 auto 10px;
  min-height: 24px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.legend-item {
  font-size: 12px;
  border: 1px solid #666;
  border-radius: 999px;
  padding: 3px 8px;
  background: #fff;
}

.calendar-grid {
  max-width: 1800px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(300px, 1fr));
  gap: 24px;
}

.month-card {
  border: 3px solid var(--card-border);
  background: #fdfdfd;
}

.month-title {
  margin: 0;
  text-align: center;
  padding: 8px 10px;
  font-size: 30px;
  line-height: 1;
}

.weekdays,
.days { display: grid; grid-template-columns: repeat(7, 1fr); }

.weekdays span {
  text-align: center;
  font-weight: 700;
  padding: 6px 0;
  font-size: 13px;
}

.day {
  min-height: 64px;
  border-top: 1px solid var(--day-border);
  border-right: 1px solid var(--day-border);
  padding: 4px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}

.day:nth-child(7n) { border-right: 0; }
.day-number { font-size: 14px; font-weight: 700; }

.day-events {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 2px;
  min-height: 18px;
}

.day-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 16px;
  height: 16px;
  line-height: 1;
  font-size: 13px;
}

.day-overlap { box-shadow: inset 0 0 0 2px rgba(255, 140, 0, 0.7); }
.day-heavy { box-shadow: inset 0 0 0 2px rgba(210, 20, 20, 0.72); }
.day.empty { color: transparent; }

@media (max-width: 1700px) {
  .control-grid { grid-template-columns: repeat(3, minmax(230px, 1fr)); }
}

@media (max-width: 1400px) {
  .calendar-grid { grid-template-columns: repeat(2, minmax(320px, 1fr)); }
}

@media (max-width: 960px) {
  .topbar { flex-direction: column; align-items: flex-start; }
  .control-grid { grid-template-columns: 1fr; }
  .calendar-grid { grid-template-columns: 1fr; }
  .month-title { font-size: 26px; }
}