/* ── GPA Calculator — tool-specific styles ────────────────────────────────────
   Global styles are inherited from /css/style.css.
   All colours reference CSS custom properties where possible.
   ─────────────────────────────────────────────────────────────────────────── */

/* ── Course rows ──────────────────────────────────────────────────────────── */
.gc-rows {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.gc-row {
  display: grid;
  grid-template-columns: 1fr 90px 140px 40px;
  gap: 0.5rem;
  align-items: center;
}

@media (max-width: 640px) {
  .gc-row {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "name name"
      "credits grade"
      "remove remove";
  }
  .gc-row-name { grid-area: name; }
  .gc-row-credits { grid-area: credits; }
  .gc-row-grade { grid-area: grade; }
  .gc-row-remove { grid-area: remove; justify-self: end; }
}

.gc-row input,
.gc-row select {
  padding: 0.55rem 0.6rem;
  font-size: 0.9375rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-control, 6px);
  background: var(--bg-input, var(--bg-card));
  color: var(--text-primary);
  box-sizing: border-box;
  width: 100%;
}

.gc-row input:focus,
.gc-row select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--focus-ring, rgba(37, 99, 235, 0.12));
}

.gc-row-credits {
  text-align: center;
}

.gc-row-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  font-size: 1.25rem;
  line-height: 1;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-control, 6px);
  background: var(--bg-card);
  color: var(--text-secondary, var(--text-primary));
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.gc-row-remove:hover {
  border-color: #dc2626;
  color: #dc2626;
}

.gc-actions-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

/* ── Previous GPA ─────────────────────────────────────────────────────────── */
.gc-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.9375rem;
}

.gc-previous-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 0.9rem;
}

@media (max-width: 480px) {
  .gc-previous-fields {
    grid-template-columns: 1fr;
  }
}

.gc-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.gc-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

/* ── Results ─────────────────────────────────────────────────────────────── */
.gc-results-grid {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.gc-result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border-color);
}

.gc-result-row:last-child {
  border-bottom: none;
}

.gc-result-label {
  font-size: 0.9375rem;
  color: var(--text-secondary, var(--text-primary));
}

.gc-result-value {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: right;
}

.gc-result-value--main {
  font-size: 1.625rem;
  color: var(--accent);
}

.gc-copy-row {
  margin-top: 0.9rem;
  display: flex;
  justify-content: flex-end;
}

/* ── Grade scale table ───────────────────────────────────────────────────── */
.gc-scale-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.gc-scale-table th,
.gc-scale-table td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.gc-scale-table th {
  font-weight: 600;
  color: var(--text-secondary, var(--text-primary));
}