:root {
  --navy-950: #08233a;
  --navy-900: #0b3b66;
  --blue-700: #1565a8;
  --blue-100: #e9f4ff;
  --gold-500: #f2b134;
  --gold-100: #fff6dc;
  --ink-900: #14212b;
  --ink-700: #425466;
  --ink-500: #67788a;
  --line: #d9e2ea;
  --line-strong: #bdcad5;
  --surface: #ffffff;
  --surface-soft: #f5f8fb;
  --success: #176b45;
  --success-bg: #eaf8f1;
  --warning: #8a5b00;
  --warning-bg: #fff7dd;
  --danger: #a33a35;
  --danger-bg: #fff0ef;
  --shadow: 0 18px 45px rgba(8, 35, 58, 0.09);
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink-900);
  background: var(--surface-soft);
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 90% 0%, rgba(242, 177, 52, 0.16), transparent 24rem),
    linear-gradient(180deg, #f9fbfd 0, var(--surface-soft) 34rem);
  color: var(--ink-900);
  line-height: 1.55;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

svg {
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(189, 202, 213, 0.75);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
}

.header-inner {
  width: min(1320px, calc(100% - 40px));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--navy-950);
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  color: #fff;
  background: var(--navy-900);
  box-shadow: inset 0 -4px 0 rgba(242, 177, 52, 0.9);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.github-button,
.button {
  min-height: 42px;
  border-radius: 10px;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 15px;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
  transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease, border-color 150ms ease;
}

.github-button {
  color: #fff;
  background: var(--navy-950);
}

.github-button svg,
.button svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.github-button:hover,
.button:hover {
  transform: translateY(-1px);
}

.github-button:focus-visible,
.button:focus-visible,
.text-button:focus-visible,
.icon-button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(21, 101, 168, 0.25);
  outline-offset: 2px;
}

main {
  width: min(1320px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  padding: 62px 0 34px;
}

.hero-copy {
  max-width: 820px;
}

.eyebrow {
  margin: 0 0 9px;
  color: var(--blue-700);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 14px;
  color: var(--navy-950);
  font-size: clamp(2.25rem, 5vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.hero-copy > p:last-child {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--ink-700);
  font-size: clamp(1rem, 2vw, 1.18rem);
}

.calculator-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(340px, 0.75fr);
  gap: 22px;
  align-items: start;
}

.course-workspace,
.result-panel,
.audit-section,
.guide-section,
.reference-section {
  border: 1px solid rgba(189, 202, 213, 0.72);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
}

.course-workspace,
.result-panel {
  border-radius: var(--radius-lg);
}

.course-workspace {
  padding: 24px;
}

.workspace-heading,
.audit-card-heading,
.dialog-heading,
.section-heading-compact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.workspace-heading {
  margin-bottom: 18px;
}

.workspace-heading h2,
.content-heading h2,
.narrow-heading h2,
.reference-section h2 {
  margin-bottom: 4px;
  color: var(--navy-950);
  letter-spacing: -0.035em;
}

.workspace-heading h2 {
  font-size: 1.5rem;
}

.workspace-heading p,
.content-heading p,
.section-heading-compact span {
  margin-bottom: 0;
  color: var(--ink-500);
}

.workspace-actions,
.workspace-footer-actions,
.result-actions,
.dialog-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.button-primary {
  color: #fff;
  background: var(--blue-700);
  box-shadow: 0 8px 20px rgba(21, 101, 168, 0.18);
}

.button-primary:hover {
  background: var(--navy-900);
}

.button-secondary {
  color: var(--navy-900);
  border-color: var(--line-strong);
  background: #fff;
}

.button-secondary:hover {
  border-color: var(--blue-700);
  background: var(--blue-100);
}

.button-wide {
  flex: 1;
}

.course-list {
  display: grid;
  gap: 14px;
}

.course-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  overflow: hidden;
}

.course-card-header {
  min-height: 48px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-soft);
}

.course-card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--navy-950);
}

.course-number {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  color: var(--navy-900);
  background: var(--blue-100);
  font-size: 0.8rem;
}

.remove-course {
  border: 0;
  border-radius: 8px;
  padding: 7px 9px;
  color: var(--ink-500);
  background: transparent;
  cursor: pointer;
}

.remove-course:hover {
  color: var(--danger);
  background: var(--danger-bg);
}

.course-fields {
  padding: 16px;
  display: grid;
  grid-template-columns: minmax(150px, 1.5fr) minmax(120px, 1fr) 90px 116px 110px 148px;
  gap: 12px;
  align-items: end;
}

.course-extra-fields {
  padding: 0 16px 16px;
  display: grid;
  grid-template-columns: auto minmax(140px, 0.7fr) minmax(150px, 1fr);
  gap: 12px;
  align-items: end;
}

.field,
.checkbox-field {
  min-width: 0;
}

.field > span,
.checkbox-field > span,
.planner-fields label > span {
  display: block;
  margin-bottom: 6px;
  color: var(--ink-700);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.field input,
.field select,
.planner-fields input,
.paste-dialog textarea {
  width: 100%;
  min-height: 43px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  padding: 9px 10px;
  color: var(--ink-900);
  background: #fff;
}

.field input:hover,
.field select:hover,
.planner-fields input:hover,
.paste-dialog textarea:hover {
  border-color: var(--blue-700);
}

.checkbox-field label {
  min-height: 43px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 11px;
  color: var(--ink-700);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
}

.checkbox-field input {
  width: 18px;
  height: 18px;
  accent-color: var(--blue-700);
}

.workspace-footer-actions {
  justify-content: space-between;
  margin-top: 18px;
}

.text-button {
  border: 0;
  padding: 6px 2px;
  color: var(--blue-700);
  background: transparent;
  font-weight: 750;
  cursor: pointer;
}

.text-button:hover {
  text-decoration: underline;
}

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

.result-panel {
  position: sticky;
  top: 90px;
  padding: 24px;
}

.result-primary {
  padding: 24px;
  border-radius: 17px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(242, 177, 52, 0.2), transparent 52%),
    var(--navy-900);
}

.result-label {
  margin-bottom: 3px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.gpa-value {
  display: block;
  font-size: clamp(3.2rem, 7vw, 5rem);
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.07em;
}

.result-rule {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.78rem;
}

.result-stats {
  margin: 14px 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.stat-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: var(--surface-soft);
}

.stat-card span,
.status-item span {
  display: block;
  color: var(--ink-500);
  font-size: 0.72rem;
  font-weight: 750;
}

.stat-card strong {
  display: block;
  margin-top: 2px;
  color: var(--navy-950);
  font-size: 1.12rem;
}

.status-group {
  margin-bottom: 14px;
  display: grid;
  gap: 8px;
}

.status-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--surface-soft);
}

.status-item strong {
  font-size: 0.82rem;
}

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

.status-pending strong {
  color: var(--warning);
}

.target-planner {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 17px 0;
}

.section-heading-compact {
  align-items: baseline;
  margin-bottom: 12px;
}

.section-heading-compact h3 {
  margin-bottom: 0;
  color: var(--navy-950);
  font-size: 1rem;
}

.section-heading-compact span {
  font-size: 0.7rem;
}

.planner-fields {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.planner-result {
  min-height: 54px;
  margin-top: 10px;
  border-radius: 10px;
  padding: 11px 12px;
  color: var(--navy-950);
  background: var(--gold-100);
  font-size: 0.85rem;
}

.planner-result strong {
  display: block;
  font-size: 1rem;
}

.result-actions {
  margin-top: 16px;
}

.action-status {
  min-height: 21px;
  margin: 6px 0 -6px;
  color: var(--success);
  font-size: 0.78rem;
  text-align: center;
}

.audit-section,
.guide-section,
.reference-section {
  margin-top: 24px;
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 42px);
}

.content-heading {
  max-width: 760px;
  margin-bottom: 24px;
}

.content-heading h2,
.narrow-heading h2,
.reference-section h2 {
  font-size: clamp(1.65rem, 3vw, 2.3rem);
}

.audit-grid,
.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.audit-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px;
}

.audit-card-heading {
  margin-bottom: 12px;
}

.audit-card-heading h3 {
  margin-bottom: 0;
  color: var(--navy-950);
  font-size: 1rem;
}

.count-pill {
  min-width: 30px;
  border-radius: 999px;
  padding: 3px 8px;
  color: var(--navy-900);
  background: var(--blue-100);
  font-size: 0.76rem;
  font-weight: 850;
  text-align: center;
}

.audit-list {
  display: grid;
  gap: 9px;
}

.audit-row,
.empty-state,
.warning-message {
  border-radius: 10px;
  padding: 11px 12px;
}

.audit-row {
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.audit-row-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.audit-row strong {
  color: var(--navy-950);
  font-size: 0.88rem;
}

.audit-row .audit-points {
  white-space: nowrap;
  color: var(--blue-700);
}

.audit-row p,
.empty-state,
.warning-message {
  margin: 4px 0 0;
  color: var(--ink-500);
  font-size: 0.78rem;
}

.empty-state {
  margin: 0;
  border: 1px dashed var(--line-strong);
  text-align: center;
}

.warning-list {
  margin-bottom: 16px;
  display: grid;
  gap: 8px;
}

.warning-message {
  margin: 0;
  border: 1px solid #efd78b;
  color: var(--warning);
  background: var(--warning-bg);
}

.narrow-heading {
  max-width: 760px;
  margin-bottom: 25px;
}

.guide-grid article {
  border-top: 3px solid var(--gold-500);
  border-radius: 4px 4px 12px 12px;
  padding: 18px;
  background: var(--surface-soft);
}

.guide-grid h3 {
  margin-bottom: 7px;
  color: var(--navy-950);
  font-size: 1rem;
}

.guide-grid p,
.formula-card p {
  margin-bottom: 0;
  color: var(--ink-700);
  font-size: 0.92rem;
}

.formula-card {
  margin-top: 16px;
  border-radius: var(--radius-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding: 22px;
  color: #fff;
  background: var(--navy-950);
}

.formula-label {
  display: block;
  margin-bottom: 6px;
  color: var(--gold-500);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.formula-card p {
  color: rgba(255, 255, 255, 0.74);
}

.reference-section {
  margin-bottom: 48px;
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.25fr);
  gap: 28px;
  align-items: center;
}

.reference-section h2 {
  margin-bottom: 0;
}

.reference-links {
  display: grid;
  gap: 9px;
}

.reference-links a {
  border: 1px solid var(--line);
  border-radius: 10px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  color: var(--navy-900);
  background: var(--surface-soft);
  font-weight: 750;
  text-decoration: none;
}

.reference-links a:hover {
  border-color: var(--blue-700);
  background: var(--blue-100);
}

.paste-dialog {
  width: min(680px, calc(100% - 28px));
  border: 0;
  border-radius: var(--radius-lg);
  padding: 0;
  box-shadow: 0 30px 80px rgba(8, 35, 58, 0.28);
}

.paste-dialog::backdrop {
  background: rgba(8, 35, 58, 0.58);
  backdrop-filter: blur(4px);
}

.dialog-card {
  padding: 24px;
}

.dialog-heading h2 {
  margin-bottom: 0;
  color: var(--navy-950);
}

.icon-button {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink-500);
  background: #fff;
  font-size: 1.4rem;
  cursor: pointer;
}

.paste-dialog textarea {
  min-height: 190px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
}

.form-errors {
  min-height: 21px;
  margin-top: 8px;
  color: var(--danger);
  font-size: 0.82rem;
  white-space: pre-line;
}

.dialog-actions {
  justify-content: flex-end;
  margin-top: 14px;
}

footer {
  border-top: 1px solid var(--line);
  padding: 24px 20px 30px;
  color: var(--ink-500);
  background: #fff;
  font-size: 0.85rem;
  text-align: center;
}

@media (max-width: 1080px) {
  .calculator-shell {
    grid-template-columns: 1fr;
  }

  .result-panel {
    position: static;
    grid-row: 1;
  }

  .course-workspace {
    grid-row: 2;
  }

  .course-fields {
    grid-template-columns: 1.5fr 1fr repeat(2, minmax(100px, 0.7fr));
  }

  .course-fields .field:nth-child(5),
  .course-fields .field:nth-child(6) {
    grid-column: span 2;
  }
}

@media (max-width: 720px) {
  .header-inner,
  main {
    width: min(100% - 24px, 1320px);
  }

  .header-inner {
    min-height: 62px;
  }

  .brand > span:last-child {
    display: none;
  }

  .github-button {
    min-height: 40px;
  }

  .hero {
    padding: 38px 0 24px;
  }

  h1 {
    font-size: clamp(2.2rem, 12vw, 3.5rem);
  }

  .course-workspace,
  .result-panel,
  .audit-section,
  .guide-section,
  .reference-section {
    border-radius: 17px;
  }

  .course-workspace,
  .result-panel {
    padding: 16px;
  }

  .workspace-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .workspace-actions {
    width: 100%;
  }

  .workspace-actions .button {
    flex: 1;
    padding-inline: 9px;
  }

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

  .course-fields .field:nth-child(1),
  .course-fields .field:nth-child(2),
  .course-fields .field:nth-child(5),
  .course-fields .field:nth-child(6),
  .course-extra-fields .checkbox-field {
    grid-column: 1 / -1;
  }

  .result-stats,
  .audit-grid,
  .guide-grid,
  .formula-card,
  .reference-section {
    grid-template-columns: 1fr;
  }

  .result-primary {
    padding: 19px;
  }

  .gpa-value {
    font-size: 4rem;
  }

  .audit-section,
  .guide-section,
  .reference-section {
    padding: 22px 18px;
  }

  .workspace-footer-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .reference-section {
    gap: 20px;
  }
}

@media (max-width: 430px) {
  .course-fields,
  .course-extra-fields,
  .planner-fields {
    grid-template-columns: 1fr;
  }

  .course-fields .field,
  .course-extra-fields .field,
  .course-extra-fields .checkbox-field {
    grid-column: auto;
  }

  .result-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button-wide {
    flex: auto;
  }
}

@media print {
  .site-header,
  .hero,
  .workspace-actions,
  .workspace-footer-actions,
  .result-actions,
  .guide-section,
  .reference-section,
  footer,
  dialog {
    display: none !important;
  }

  body,
  main {
    width: 100%;
    background: #fff;
  }

  .calculator-shell {
    display: block;
  }

  .course-workspace,
  .result-panel,
  .audit-section {
    margin-bottom: 16px;
    border: 1px solid #aaa;
    box-shadow: none;
  }

  .result-panel {
    position: static;
  }
}