:root {
  color-scheme: dark;

  --bg:           #0e1016;
  --surface:      #141a22;
  --surface-soft: #18202c;
  --surface-up:   #1e2838;

  --ink:      #bec8d8;
  --ink-soft: #6a7a92;
  --muted:    #3e4e64;

  --line:    #1c2535;
  --line-up: #24304a;

  --maroon: #9a4248;
  --teal:   #3a9098;
  --gold:   #a07838;
  --green:  #3a8858;
  --blue:   #4878a8;

  --shadow-sm: 0 1px 6px rgba(0, 0, 0, 0.4);
  --shadow:    0 4px 20px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, sans-serif;
  font-size: 14px;
  color: var(--ink);
  background: var(--bg);
}

h1, h2, h3, h4 { margin: 0; }

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Layout ── */

.app-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
}

/* ── Sidebar ── */

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 24px 18px;
  background: #0b0e14;
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-right: 1px solid var(--line);
  overflow-y: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: #5a2028;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: #c8a8ac;
  flex-shrink: 0;
}

.brand h1 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink);
}

.brand p {
  margin: 2px 0 0;
  font-size: 0.72rem;
  color: var(--muted);
}

.nav-list {
  display: grid;
  gap: 2px;
}

.nav-list a {
  display: block;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: color 0.15s, background 0.15s;
}

.nav-list a:hover {
  color: var(--ink);
  background: var(--surface-soft);
}

.nav-list a.active {
  color: var(--ink);
  background: var(--surface-soft);
}

.sidebar-note {
  margin-top: auto;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.sidebar-note span {
  display: block;
  margin-bottom: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.sidebar-note strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}

.sidebar-note p {
  margin: 0;
  font-size: 0.76rem;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* ── Main ── */

main {
  padding: 32px;
  display: grid;
  gap: 16px;
  align-content: start;
}

.eyebrow {
  display: block;
  margin-bottom: 6px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  animation: fadeIn 0.4s ease-out both;
}

.topbar h2 {
  font-size: clamp(1.8rem, 3.2vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1;
  color: var(--ink);
}

.last-updated {
  margin: 10px 0 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.ghost-button,
.icon-button {
  border: 1px solid var(--line-up);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.ghost-button:hover,
.icon-button:hover {
  border-color: var(--line-up);
  color: var(--ink);
  background: var(--surface-up);
}

.ghost-button {
  padding: 8px 13px;
  font-size: 0.82rem;
  white-space: nowrap;
}

.icon-button {
  width: 32px;
  height: 32px;
  font-size: 1.1rem;
}

/* ── Metrics ── */

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.metric {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
  animation: fadeIn 0.4s ease-out both;
}

.metric:nth-child(1) { animation-delay: 0.05s; }
.metric:nth-child(2) { animation-delay: 0.10s; }
.metric:nth-child(3) { animation-delay: 0.15s; }
.metric:nth-child(4) { animation-delay: 0.20s; }

.metric span {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.metric strong {
  display: block;
  margin: 8px 0 12px;
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.progress {
  height: 3px;
  border-radius: 99px;
  background: var(--surface-up);
  overflow: hidden;
}

.progress span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 99px;
  transition: width 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

#totalProgress    { background: var(--gold); }
#coreProgress     { background: var(--maroon); }
#electiveProgress { background: var(--blue); }
#supportProgress  { background: var(--teal); }

/* ── Panels ── */

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 16px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease-out, transform 0.35s ease-out;
}

.panel.visible {
  opacity: 1;
  transform: translateY(0);
}

.wide-panel { overflow: hidden; }

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.panel h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
}

.panel h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 8px;
}

.muted {
  margin: 0 0 14px;
  font-size: 0.8rem;
  color: var(--ink-soft);
  line-height: 1.55;
}

/* ── GPA ── */

.gpa-panel .panel-head strong {
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--teal);
}

.semester-gpas {
  display: grid;
  gap: 7px;
  margin: 0 0 16px;
}

.semester-gpa-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
}

.semester-gpa-row span {
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.semester-gpa-row strong {
  color: var(--ink);
  font-size: 0.85rem;
  font-weight: 600;
}

/* ── Grade bars ── */

.grade-bars { display: grid; gap: 9px; }

.grade-row {
  display: grid;
  grid-template-columns: 44px 1fr 36px;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
}

.grade-row strong { color: var(--ink-soft); font-weight: 500; }
.grade-row span   { color: var(--muted); text-align: right; font-size: 0.78rem; }

.bar {
  height: 6px;
  border-radius: 99px;
  background: var(--surface-up);
  overflow: hidden;
}

.bar span {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: var(--gold);
  transition: width 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Tasks ── */

.task-list { display: grid; gap: 7px; }

.task-item {
  display: grid;
  grid-template-columns: 16px 1fr;
  gap: 9px;
  align-items: start;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-soft);
  cursor: pointer;
  transition: border-color 0.15s;
}

.task-item:hover { border-color: var(--line-up); }

.task-item input[type="checkbox"] {
  margin-top: 2px;
  accent-color: var(--teal);
  cursor: pointer;
}

.task-item textarea {
  width: 100%;
  min-height: 38px;
  border: 0;
  resize: vertical;
  background: transparent;
  color: var(--ink);
  line-height: 1.45;
  font-size: 0.84rem;
}

.task-item textarea:focus {
  outline: 1px solid rgba(58, 144, 152, 0.4);
  border-radius: 3px;
}

/* ── Semester plan ── */

.semester-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(190px, 1fr));
  gap: 12px;
}

.semester-column {
  min-width: 0;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
}

.semester-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.semester-title span:last-child {
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 400;
}

/* ── Course cards ── */

.course-card {
  display: grid;
  gap: 7px;
  padding: 11px 12px;
  margin-bottom: 7px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--teal);
  border-radius: 7px;
  background: var(--surface);
  transition: border-color 0.15s;
}

.course-card:hover { border-color: var(--line-up); border-left-color: var(--teal); }

.course-card.core     { border-left-color: var(--maroon); }
.course-card.elective { border-left-color: var(--blue); }
.course-card.support  { border-left-color: var(--green); }

.course-card.core:hover     { border-left-color: var(--maroon); }
.course-card.elective:hover { border-left-color: var(--blue); }
.course-card.support:hover  { border-left-color: var(--green); }

.course-card.locked {
  background: var(--surface);
}

.course-card.locked .course-title strong {
  color: var(--ink);
}

.course-card.locked .course-title > span,
.course-card.locked .course-meta,
.course-card.locked > div:not(.course-title):not(.course-meta) {
  color: var(--muted);
}

.course-title {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.course-title strong {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.course-title span {
  font-size: 0.72rem;
  color: var(--muted);
  white-space: nowrap;
}

.type-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 18px;
  padding: 0 6px;
  border: 1px solid currentColor;
  border-radius: 5px;
  font-size: 0.62rem;
  font-weight: 700;
  line-height: 1;
  color: var(--teal);
  background: rgba(255, 255, 255, 0.025);
}

.type-badge.core { color: var(--maroon); }
.type-badge.elective { color: var(--blue); }
.type-badge.support { color: var(--green); }

.course-card.locked .type-badge.core { color: var(--maroon); }
.course-card.locked .type-badge.elective { color: var(--blue); }
.course-card.locked .type-badge.support { color: var(--green); }

.course-card > div:not(.course-title):not(.course-meta) {
  font-size: 0.78rem;
  color: var(--ink-soft);
  line-height: 1.4;
}

.course-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.72rem;
  color: var(--muted);
}

.course-card select {
  min-width: 72px;
  border: 1px solid var(--line-up);
  border-radius: 5px;
  padding: 4px 7px;
  background: var(--surface-up);
  color: var(--ink);
  font-size: 0.76rem;
  cursor: pointer;
}

.course-card select:focus {
  outline: none;
  border-color: var(--teal);
}

.course-card select:disabled {
  color: var(--ink);
  cursor: not-allowed;
  background: var(--surface-up);
  border-color: var(--line);
  opacity: 1;
}

/* ── Legend & tags ── */

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 4px;
  border-radius: 50%;
  background: var(--maroon);
}

.dot.elective { background: var(--blue); }
.dot.support  { background: var(--green); }

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line-up);
  background: var(--surface-soft);
  color: var(--ink-soft);
  font-size: 0.76rem;
}

/* ── Requirements ── */

.requirements-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.clean-list {
  margin: 0;
  padding-left: 16px;
  color: var(--ink-soft);
  line-height: 1.8;
  font-size: 0.84rem;
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.evidence-card {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
}

.evidence-card span {
  display: block;
  margin-bottom: 8px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--teal);
}

.evidence-card h4 {
  margin-bottom: 8px;
}

.evidence-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.55;
}

/* ── Syllabi ── */

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

.syllabus-card {
  display: grid;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--teal);
  border-radius: 8px;
  background: var(--surface-soft);
}

.syllabus-card.core { border-left-color: var(--maroon); }
.syllabus-card.support { border-left-color: var(--green); }

.syllabus-topline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.syllabus-topline span {
  display: block;
  margin-bottom: 6px;
  color: var(--ink-soft);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.syllabus-topline h4 {
  margin: 0;
  line-height: 1.35;
}

.syllabus-topline > strong {
  display: grid;
  place-items: center;
  min-width: 30px;
  height: 24px;
  padding: 0 7px;
  border: 1px solid currentColor;
  border-radius: 6px;
  color: var(--ink-soft);
  font-size: 0.68rem;
}

.syllabus-card.core .syllabus-topline > strong { color: var(--maroon); }
.syllabus-card.support .syllabus-topline > strong { color: var(--green); }

.syllabus-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
}

.syllabus-meta div {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
}

.syllabus-meta dt {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.syllabus-meta dd {
  margin: 0;
  color: var(--ink);
  font-size: 0.82rem;
  line-height: 1.35;
}

.syllabus-focus {
  padding-top: 2px;
}

.syllabus-focus h4 {
  margin-bottom: 6px;
}

.syllabus-focus p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.55;
}

.syllabus-scale,
.weight-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.syllabus-scale span,
.weight-list div {
  padding: 9px 10px;
  border-radius: 7px;
  background: var(--surface);
  color: var(--ink-soft);
  font-size: 0.76rem;
  text-align: center;
}

.weight-list div {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  text-align: left;
}

.weight-list strong {
  color: var(--ink);
  font-weight: 600;
}

/* ── Task board ── */

.task-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.task-column {
  padding: 13px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.task-column h4 {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
}

.task-column h4 span {
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0;
  font-family: inherit;
}

/* ── References ── */

.reference-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.reference-grid a {
  display: grid;
  gap: 8px;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  transition: color 0.15s;
}

.reference-grid a:hover { color: var(--ink); }

.reference-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
  transition: border-color 0.15s;
}

.reference-grid a:hover img { border-color: var(--line-up); }

/* ── Responsive ── */

@media (max-width: 1080px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; }
  .nav-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .metrics-grid, .semester-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .content-grid, .requirements-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  main, .sidebar { padding: 20px; }
  .topbar, .panel-head { flex-direction: column; align-items: stretch; }
  .nav-list, .metrics-grid, .semester-grid, .task-board, .reference-grid, .evidence-grid, .syllabus-grid {
    grid-template-columns: 1fr;
  }
}