.gpa-calculator-section {
  position: relative;
}

.gpa-semesters {
  display: grid;
  gap: 1.8rem;
  position: relative;
  z-index: 1;
}

.gpa-semester {
  border-radius: 20px;
  padding: 1.8rem;
  background: linear-gradient(135deg, rgba(248, 250, 252, 0.95), rgba(255, 255, 255, 0.98));
  border: 1px solid rgba(226, 232, 240, 0.8);
  box-shadow: 0 18px 32px rgba(15, 23, 42, 0.08);
}

.gpa-semester-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.gpa-semester-heading {
  display: grid;
  gap: 0.6rem;
}

.gpa-semester-kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: #1d4ed8;
  font-weight: 700;
}

.gpa-semester-name-label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: #475569;
  max-width: 320px;
}

.gpa-semester-tools {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.gpa-semester-toggle {
  border: 1px solid rgba(15, 23, 42, 0.12);
  background: #ffffff;
  color: #0f172a;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.55rem 1.1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.gpa-semester-toggle:hover,
.gpa-semester-toggle:focus {
  border-color: #1d4ed8;
  box-shadow: 0 10px 20px rgba(29, 78, 216, 0.14);
  transform: translateY(-1px);
}

.gpa-semester-toggle .fa-solid {
  transition: transform 0.25s ease;
}

.gpa-semester.is-collapsed .gpa-semester-toggle .fa-solid {
  transform: rotate(-90deg);
}

.gpa-semester-body {
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.gpa-semester.is-collapsed .gpa-semester-body {
  max-height: 0;
}

.gpa-semester-actions {
  margin-top: 1.1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.gpa-semester-result {
  margin-top: 1.2rem;
}

.gpa-result-card {
  background: linear-gradient(135deg, rgba(14, 116, 144, 0.18), rgba(16, 185, 129, 0.18));
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.2rem;
  align-items: center;
}

.gpa-result-copy {
  display: grid;
  gap: 0.35rem;
}

.gpa-progress {
  width: 120px;
  height: 120px;
  position: relative;
  display: grid;
  place-items: center;
}

.gpa-progress-ring {
  width: 120px;
  height: 120px;
  transform: rotate(-90deg);
}

.gpa-progress-track {
  fill: none;
  stroke: rgba(15, 23, 42, 0.12);
  stroke-width: 10;
}

.gpa-progress-value {
  fill: none;
  stroke: #1d4ed8;
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 327;
  stroke-dashoffset: 327;
  transition: stroke-dashoffset 0.6s ease;
}

.gpa-progress--overall .gpa-progress-value {
  stroke: #10b981;
}

.gpa-progress-text {
  position: absolute;
  text-align: center;
  display: grid;
  gap: 0.15rem;
}

.gpa-progress-number {
  font-size: 1.2rem;
  font-weight: 700;
  color: #0f172a;
}

.gpa-progress-label {
  text-transform: uppercase;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: #64748b;
}

.gpa-progress.is-loading::after {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 999px;
  border: 2px dashed rgba(29, 78, 216, 0.35);
  animation: gpa-spin 1s linear infinite;
}

.gpa-progress--overall.is-loading::after {
  border-color: rgba(16, 185, 129, 0.35);
}

.gpa-progress.is-loading .gpa-progress-value {
  transition-duration: 1s;
}

.gpa-calculator-actions {
  margin-top: 2rem;
}

.gpa-overall-result {
  margin-top: 2rem;
}

@media (max-width: 900px) {
  .gpa-semester {
    padding: 1.5rem;
  }

  .gpa-semester-header {
    flex-direction: column;
    align-items: stretch;
  }

  .gpa-semester-header .gwa-button {
    width: 100%;
    justify-content: center;
  }

  .gpa-semester-header .gpa-semester-toggle {
    width: 100%;
    justify-content: center;
  }

  .gpa-result-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 600px) {
  .gpa-semester {
    padding: 1.25rem;
  }

  .gpa-semester-actions .gwa-button,
  .gpa-calculator-actions .gwa-button {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 520px) {
  .gpa-progress {
    width: 100px;
    height: 100px;
  }

  .gpa-progress-ring {
    width: 100px;
    height: 100px;
  }
}

@keyframes gpa-spin {
  to {
    transform: rotate(360deg);
  }
}