.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
  transition:
    border-color var(--motion-base) ease,
    background-color var(--motion-base) ease;
}

.header-layout,
.footer-layout,
.roadmap-heading,
.compact-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header-layout {
  min-height: 4.4rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--heading);
  text-decoration: none;
}

.brand-mark {
  color: var(--accent);
  font-size: 1.25rem;
  font-weight: 800;
  transition:
    color var(--motion-fast) ease,
    transform var(--motion-base) var(--ease-out);
}

.brand:hover .brand-mark {
  transform: translateX(3px);
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.1;
}

.brand small {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.header-actions,
.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.course-picker select {
  min-height: 2.65rem;
  max-width: 18rem;
  padding: 0.55rem 2.2rem 0.55rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  outline: none;
  background: var(--surface);
  color: var(--heading);
  font-size: 0.82rem;
  font-weight: 800;
  cursor: pointer;
  transition:
    border-color var(--motion-fast) ease,
    background-color var(--motion-base) ease,
    color var(--motion-base) ease,
    box-shadow var(--motion-fast) ease;
}

.course-picker select:focus,
.course-picker select:hover {
  border-color: var(--accent);
}

.course-picker select:focus {
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.button,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.65rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  color: var(--heading);
  font-size: 0.86rem;
  font-weight: 800;
  text-decoration: none;
  transition:
    border-color var(--motion-fast) ease,
    background-color var(--motion-base) ease,
    color var(--motion-base) ease,
    box-shadow var(--motion-base) var(--ease-out),
    transform var(--motion-base) var(--ease-out);
}

.button {
  padding: 0.7rem 1rem;
}

.icon-button {
  width: 2.65rem;
  background: var(--surface);
}

.button:hover,
.icon-button:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.button:active,
.icon-button:active {
  transform: translateY(0);
}

.button-primary {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
  color: var(--accent-contrast);
}

.button-primary:hover {
  box-shadow: 0 8px 22px var(--accent-soft);
}

.button-quiet {
  background: transparent;
}

.hero {
  padding: 7rem 0 5rem;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(var(--accent-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--accent-soft) 1px, transparent 1px);
  background-size: 42px 42px;
  transition:
    border-color var(--motion-base) ease,
    background-color var(--motion-base) ease;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(270px, 360px);
  align-items: center;
  gap: 4rem;
}

.hero-copy {
  max-width: 680px;
  margin-bottom: 1.75rem;
  color: var(--muted);
  font-size: 1.08rem;
}

.terminal-card {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 0.8rem;
  background: var(--code-bg);
  box-shadow: var(--shadow);
  transition:
    border-color var(--motion-base) ease,
    background-color var(--motion-base) ease,
    box-shadow var(--motion-slow) var(--ease-out),
    transform var(--motion-slow) var(--ease-out);
}

.terminal-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.terminal-top {
  display: flex;
  gap: 0.38rem;
  padding: 0.7rem 0.8rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface-raised);
}

.terminal-top span {
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 50%;
  background: var(--line-strong);
}

.terminal-top span:first-child {
  background: var(--danger);
}

.terminal-top span:nth-child(2) {
  background: var(--warn);
}

.terminal-top span:last-child {
  background: var(--accent);
}

.terminal-body {
  min-height: 230px;
  padding: 1.2rem;
  color: var(--code-text);
  font-size: 0.86rem;
}

.terminal-body p {
  margin-bottom: 0.7rem;
  animation: soft-enter var(--motion-slow) var(--ease-out) both;
}

.terminal-body p:nth-child(2) {
  animation-delay: 35ms;
}

.terminal-body p:nth-child(3) {
  animation-delay: 70ms;
}

.terminal-body p:nth-child(4) {
  animation-delay: 105ms;
}

.terminal-body p:nth-child(5) {
  animation-delay: 140ms;
}

.terminal-body p:nth-child(6) {
  animation-delay: 175ms;
}

.terminal-body p:nth-child(7) {
  animation-delay: 210ms;
}

.terminal-body span {
  color: var(--accent);
}

.progress-section {
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  transition:
    border-color var(--motion-base) ease,
    background-color var(--motion-base) ease;
}

.compact-heading h2 {
  margin-bottom: 0;
  font-size: 1.35rem;
  letter-spacing: -0.035em;
}

.compact-heading .eyebrow {
  margin-bottom: 0.3rem;
}

#overall-percent {
  color: var(--accent);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 1.5rem;
}

.progress-track {
  overflow: hidden;
  height: 0.38rem;
  border-radius: 999px;
  background: var(--line);
}

.progress-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent-strong);
  transition: width 220ms ease;
}

.progress-track-large {
  margin-top: 0.9rem;
}

.progress-section .muted {
  margin: 0.65rem 0 0;
  font-size: 0.84rem;
}

.section-heading {
  max-width: 740px;
  margin-bottom: 2rem;
}

.section-heading p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: var(--line);
}

.workflow-item {
  min-height: 180px;
  padding: 1.2rem;
  background: var(--surface);
  animation: soft-enter var(--motion-slow) var(--ease-out) both;
  animation-delay: calc(var(--enter-index, 0) * 45ms);
  transition:
    background-color var(--motion-base) ease,
    transform var(--motion-base) var(--ease-out);
}

.workflow-item:hover {
  background: var(--surface-raised);
  transform: translateY(-2px);
}

.workflow-item strong {
  display: block;
  margin-bottom: 1.4rem;
  color: var(--accent);
  font-family: "Cascadia Code", Consolas, monospace;
}

.workflow-item h3 {
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.workflow-item p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.87rem;
}

.roadmap-section {
  border-top: 1px solid var(--line);
}

.roadmap-heading {
  max-width: none;
}

.filter input {
  width: min(360px, 75vw);
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  outline: none;
  background: var(--surface);
  color: var(--text);
  transition:
    border-color var(--motion-fast) ease,
    background-color var(--motion-base) ease,
    color var(--motion-base) ease,
    box-shadow var(--motion-fast) ease;
}

.filter input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.module-nav {
  display: flex;
  gap: 0.5rem;
  padding-bottom: 1rem;
  overflow-x: auto;
}

.nav-pill {
  flex: 0 0 auto;
  padding: 0.42rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 0.7rem;
  text-decoration: none;
  animation: soft-enter var(--motion-slow) var(--ease-out) both;
  animation-delay: calc(var(--enter-index, 0) * 20ms);
  transition:
    border-color var(--motion-fast) ease,
    background-color var(--motion-fast) ease,
    color var(--motion-fast) ease,
    transform var(--motion-base) var(--ease-out);
}

.nav-pill:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  transform: translateY(-1px);
}

.module-card {
  margin-top: 1.2rem;
  scroll-margin-top: 5.5rem;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: var(--surface);
  animation: soft-enter var(--motion-slow) var(--ease-out) both;
  animation-delay: min(calc(var(--enter-index, 0) * 28ms), 220ms);
  transition:
    border-color var(--motion-base) ease,
    background-color var(--motion-base) ease,
    box-shadow var(--motion-slow) var(--ease-out),
    transform var(--motion-base) var(--ease-out);
}

.module-card:hover {
  border-color: var(--line-strong);
  box-shadow: 0 12px 30px var(--accent-soft);
}

.module-card[open] {
  border-color: var(--line-strong);
}

.module-summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  padding: 1.2rem;
  cursor: pointer;
  list-style: none;
}

.module-summary::-webkit-details-marker {
  display: none;
}

.module-index {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
}

.module-summary h3 {
  margin-bottom: 0.3rem;
  font-size: 1.3rem;
}

.module-summary p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.87rem;
}

.module-meta {
  min-width: 150px;
  text-align: right;
}

.module-meta small {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--muted);
  font-family: "Cascadia Code", Consolas, monospace;
}

.module-tasks {
  display: grid;
  gap: 0.8rem;
  padding: 0 1.2rem 1.2rem;
}

.module-card[open] .module-tasks {
  animation: soft-enter var(--motion-base) var(--ease-out) both;
}

.task-card {
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: var(--surface-raised);
  animation: soft-enter var(--motion-slow) var(--ease-out) both;
  animation-delay: calc(var(--enter-index, 0) * 24ms);
  transition:
    border-color var(--motion-fast) ease,
    background-color var(--motion-base) ease,
    transform var(--motion-base) var(--ease-out);
}

.task-card:hover {
  border-color: var(--line-strong);
}

.task-card[open] {
  border-color: var(--accent);
}

.task-summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem;
  cursor: pointer;
  list-style: none;
}

.task-summary::-webkit-details-marker {
  display: none;
}

.task-checkbox {
  width: 1rem;
  height: 1rem;
  accent-color: var(--accent-strong);
  transition: transform var(--motion-fast) var(--ease-out);
}

.task-checkbox:checked {
  transform: scale(1.08);
}

.task-title {
  margin: 0;
  font-size: 1rem;
}

.task-hours {
  color: var(--accent);
  font-size: 0.73rem;
}

.task-content {
  display: grid;
  gap: 1.2rem;
  padding: 0 1rem 1rem 2.8rem;
}

.task-card[open] .task-content {
  animation: soft-enter var(--motion-base) var(--ease-out) both;
}

.task-metadata {
  display: grid;
  grid-template-columns: minmax(160px, 0.6fr) 1.4fr;
  gap: 0.8rem;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--surface);
}

.task-metadata strong,
.task-metadata span {
  display: block;
}

.task-metadata strong {
  margin-bottom: 0.42rem;
  color: var(--accent);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.task-metadata span {
  color: var(--muted);
  font-size: 0.8rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tag {
  width: fit-content;
  padding: 0.18rem 0.42rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--text) !important;
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 0.68rem !important;
  transition:
    border-color var(--motion-fast) ease,
    background-color var(--motion-fast) ease,
    transform var(--motion-base) var(--ease-out);
}

.tag:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.content-block {
  border-top: 1px solid var(--line);
  padding-top: 0.9rem;
}

.content-block h4 {
  margin: 0 0 0.5rem;
  color: var(--heading);
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.content-block p,
.content-block li {
  color: var(--muted);
  font-size: 0.88rem;
}

.content-block p:last-child,
.content-block ul:last-child {
  margin-bottom: 0;
}

.content-block ul {
  padding-left: 1.1rem;
}

.assignment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
}

.assignment-grid div {
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--surface);
}

.assignment-grid strong {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--accent);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.assignment-grid p {
  margin: 0;
}

.difficulty {
  display: inline-flex;
  gap: 0.18rem;
  color: var(--line-strong);
  font-size: 0.8rem;
}

.difficulty .active {
  color: var(--warn);
}

.empty-state {
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: var(--surface);
  text-align: center;
  animation: soft-enter var(--motion-slow) var(--ease-out) both;
}

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

.site-footer p {
  margin-bottom: 0;
}

.site-footer a {
  color: var(--accent);
}

@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .workflow-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .assignment-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .header-layout {
    align-items: flex-start;
    padding: 0.7rem 0;
  }

  .header-actions {
    justify-content: flex-end;
  }

  .course-picker select {
    max-width: 12.5rem;
    min-height: 2.35rem;
    font-size: 0.72rem;
  }

  .button {
    min-height: 2.35rem;
    padding: 0.55rem 0.7rem;
    font-size: 0.76rem;
  }

  .header-actions .button {
    display: none;
  }

  .hero {
    padding-top: 4.8rem;
  }

  .workflow-grid {
    grid-template-columns: 1fr;
  }

  .roadmap-heading {
    display: block;
  }

  .filter input {
    width: 100%;
  }

  .module-summary {
    grid-template-columns: auto 1fr;
  }

  .module-meta {
    grid-column: 2;
    text-align: left;
  }

  .task-summary {
    grid-template-columns: auto 1fr;
  }

  .task-hours {
    grid-column: 2;
  }

  .task-content {
    padding-left: 1rem;
  }

  .task-metadata {
    grid-template-columns: 1fr;
  }

  .footer-layout {
    display: block;
  }
}