:root {
  color-scheme: light;
  --bg: #f3f7f4;
  --bg-accent: #e8f0ec;
  --card: #ffffff;
  --border: #d3dfd8;
  --text: #1f2a33;
  --muted: #4b5e68;
  --accent: #2c6f58;
  --accent-strong: #235a47;
  --focus: #0f766e;
  --error-bg: #fff3f2;
  --error-border: #d44f44;
  --error-text: #7a1e17;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Atkinson Hyperlegible", "Segoe UI", "Noto Sans", system-ui, -apple-system, sans-serif;
  font-size: 19px;
  line-height: 1.65;
  background: linear-gradient(180deg, var(--bg-accent) 0%, var(--bg) 40%);
  color: var(--text);
}

.wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.page-header {
  margin-bottom: 20px;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(1.9rem, 2.6vw, 2.4rem);
  line-height: 1.2;
}

h2 {
  margin: 0 0 10px;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
  margin: 0 0 12px;
}

.sub {
  margin: 0;
  color: var(--muted);
  max-width: 64ch;
}

.content-grid {
  display: grid;
  gap: 14px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  margin: 0;
  box-shadow: 0 4px 16px rgba(32, 50, 43, 0.06);
}

.card--soft {
  background: #f8fcfa;
}

label {
  display: block;
  margin: 12px 0 6px;
  font-weight: 600;
}

input,
textarea,
select {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid #b8cac0;
  border-radius: 10px;
  background: #ffffff;
  color: var(--text);
  font: inherit;
}

textarea {
  min-height: 110px;
  resize: vertical;
}

input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  margin: 0 8px 0 0;
  vertical-align: middle;
  accent-color: var(--accent);
}

button {
  background: var(--accent);
  border: 1px solid var(--accent-strong);
  color: #ffffff;
  padding: 10px 14px;
  min-height: 44px;
  border-radius: 10px;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
}

button:hover {
  background: var(--accent-strong);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

#goals-list > div,
#students-list .row {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #f9fcfa;
  margin: 8px 0;
}

#goals-list label {
  display: inline;
  margin: 0;
  font-weight: 500;
}

#students-list .row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

#students-list .row > div:last-child {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  overflow: auto;
  background: #f7fbf9;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  line-height: 1.5;
  font-size: 0.95rem;
}

.error-message {
  display: block;
  max-width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  margin: 10px 0;
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
  font-weight: 600;
}

a {
  color: var(--accent-strong);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

@media (min-width: 900px) {
  .content-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .card--wide {
    grid-column: 1 / -1;
  }
}

@media (max-width: 700px) {
  body {
    font-size: 18px;
  }

  .wrap {
    padding: 22px 14px 42px;
  }

  .card {
    padding: 16px;
  }

  .actions button {
    flex: 1 1 100%;
  }

  #students-list .row {
    flex-direction: column;
    align-items: flex-start;
  }
}