:root {
  color-scheme: light;
  --bg: #eef4ff;
  --panel: rgba(255, 255, 255, 0.9);
  --text: #1e293b;
  --muted: #64748b;
  --line: rgba(100, 116, 139, 0.18);
  --primary: #0f766e;
  --primary-strong: #115e59;
  --danger: #b42318;
  --danger-bg: #fee4e2;
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
  font-family: "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.24), transparent 32%),
    radial-gradient(circle at right center, rgba(45, 212, 191, 0.24), transparent 24%),
    linear-gradient(135deg, #eff6ff, #f8fafc 52%, #ecfeff);
  color: var(--text);
}

.shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1;
}

h2 {
  font-size: 24px;
  margin-bottom: 10px;
}

h3 {
  font-size: 18px;
}

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

.grid {
  display: grid;
  gap: 20px;
}

.card {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  padding: 24px;
}

.card.inset {
  background: rgba(248, 250, 252, 0.95);
  border-radius: 18px;
  box-shadow: none;
  border: 1px dashed var(--line);
}

.stack {
  display: grid;
  gap: 14px;
}

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

.inline-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

label {
  display: grid;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  font: inherit;
  color: var(--text);
  background: rgba(255, 255, 255, 0.94);
}

input:focus {
  outline: 2px solid rgba(15, 118, 110, 0.2);
  border-color: rgba(15, 118, 110, 0.36);
}

button {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button.primary {
  background: linear-gradient(135deg, var(--primary), #14b8a6);
  color: white;
}

button.ghost {
  background: rgba(255, 255, 255, 0.76);
  color: var(--text);
  border: 1px solid var(--line);
}

button.danger {
  background: var(--danger-bg);
  color: var(--danger);
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
}

.checkbox input {
  width: 18px;
  height: 18px;
  padding: 0;
}

.tab-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  justify-content: space-between;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 250, 252, 0.96));
}

.tab-main {
  flex: 1;
  display: grid;
  gap: 12px;
}

.tab-actions {
  display: grid;
  gap: 10px;
  min-width: 92px;
}

.tab-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 12px;
  background: rgba(13, 148, 136, 0.12);
  color: var(--primary-strong);
}

.pill.subtle {
  background: rgba(148, 163, 184, 0.14);
  color: var(--muted);
}

.notice {
  margin-bottom: 14px;
  border-radius: 14px;
  padding: 12px 14px;
  background: rgba(20, 184, 166, 0.12);
  color: var(--primary-strong);
}

.notice.error {
  background: var(--danger-bg);
  color: var(--danger);
}

.hidden {
  display: none !important;
}

@media (max-width: 820px) {
  .hero,
  .section-head,
  .tab-row {
    flex-direction: column;
  }

  .inline-fields {
    grid-template-columns: 1fr;
  }

  .tab-actions {
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}