:root {
  --bg: #f5f7fa;
  --ink: #17202a;
  --muted: #667085;
  --line: #d8dee8;
  --panel: #ffffff;
  --brand: #126b63;
  --brand-dark: #0d4d48;
  --accent: #b14d22;
  --blue: #2458a6;
  --danger: #b42318;
  --success: #1f7a4d;
  --shadow: 0 10px 28px rgba(28, 39, 49, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: Arial, Helvetica, sans-serif;
}

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

button {
  min-height: 40px;
  border: 0;
  border-radius: 6px;
  padding: 0 14px;
  color: #fff;
  background: var(--brand);
  cursor: pointer;
}

button:hover {
  background: var(--brand-dark);
}

button.secondary {
  color: var(--brand-dark);
  background: #dcefeb;
}

button.secondary:hover {
  background: #c9e3de;
}

button.ghost {
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(16px, 4vw, 40px);
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: block;
  font-size: 1.15rem;
}

.subtitle {
  color: var(--muted);
  font-size: 0.9rem;
}

.session {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 24px auto 48px;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 6px;
  background: #e8edf3;
  border-radius: 8px;
  margin-bottom: 22px;
}

.tab {
  color: var(--ink);
  background: transparent;
}

.tab.active {
  color: #fff;
  background: var(--blue);
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.section-head,
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 6px;
  font-size: clamp(1.7rem, 2.2rem, 2.4rem);
}

h2 {
  margin-bottom: 16px;
  font-size: 1.05rem;
}

p {
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 16px;
  margin: 16px 0;
}

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

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.panel {
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.wide {
  margin-top: 16px;
}

label {
  display: block;
  margin-bottom: 12px;
  color: #344054;
  font-size: 0.92rem;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  margin-top: 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 11px;
  background: #fff;
  color: var(--ink);
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(18, 107, 99, 0.18);
  border-color: var(--brand);
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  border-radius: 999px;
  padding: 4px 10px;
  color: var(--brand-dark);
  background: #dcefeb;
  font-size: 0.88rem;
  white-space: nowrap;
}

.result,
.list {
  margin-top: 14px;
}

.muted,
.empty {
  color: var(--muted);
}

.item {
  display: grid;
  gap: 6px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.item:first-child {
  border-top: 0;
}

.item strong {
  color: var(--ink);
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.status {
  color: var(--blue);
  font-weight: 700;
}

.status.success {
  color: var(--success);
}

.status.danger {
  color: var(--danger);
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: min(420px, calc(100% - 40px));
  padding: 14px 16px;
  border-radius: 8px;
  color: #fff;
  background: #202a36;
  box-shadow: var(--shadow);
}

.hidden {
  display: none !important;
}

@media (max-width: 860px) {
  .topbar,
  .section-head,
  .panel-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .grid.two,
  .grid.three {
    grid-template-columns: 1fr;
  }

  .tabs {
    grid-template-columns: 1fr;
  }
}