.previaturas-page {
  --previaturas-panel: rgba(255, 255, 255, 0.03);
  --previaturas-panel-strong: rgba(255, 255, 255, 0.05);
  --previaturas-border: rgba(101, 123, 131, 0.45);
  --previaturas-shadow: 0 18px 50px rgba(0, 0, 0, 0.22);
  --previaturas-exam: #f07070;
  --previaturas-course: #f0a050;
  --previaturas-success: #6fcf8a;
  --previaturas-muted: var(--lightgray);
}

.previaturas-page,
.previaturas-page * {
  box-sizing: border-box;
}

.previaturas-page-header {
  display: block;
  align-items: start;
  margin-bottom: 2rem;
}

.previaturas-eyebrow,
.previaturas-kicker {
  margin: 0 0 0.45rem;
  color: var(--link);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.previaturas-page-header h1 {
  margin: 0;
}

.previaturas-summary,
.previaturas-tool-description {
  margin: 0.65rem 0 0;
  color: var(--previaturas-muted);
  line-height: 1.65;
}

.previaturas-intro,
.previaturas-tool-shell {
  border: 1px solid var(--previaturas-border);
  border-radius: 14px;
  background: var(--previaturas-panel);
  box-shadow: var(--previaturas-shadow);
}

.previaturas-reference {
  margin: 0.85rem 0 0;
  color: var(--previaturas-muted);
  font-size: 0.92rem;
}

.previaturas-meta-link {
  color: var(--link);
  font-weight: 500;
  text-decoration-color: rgba(115, 171, 222, 0.55);
}

.previaturas-intro {
  margin-bottom: 1.75rem;
  padding: 1.4rem 1.5rem;
}

.previaturas-intro > :first-child {
  margin-top: 0;
}

.previaturas-intro > :last-child {
  margin-bottom: 0;
}

.previaturas-tool-shell {
  overflow: hidden;
}

.previaturas-tool-header {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem 1rem;
  border-bottom: 1px solid var(--previaturas-border);
  background: var(--previaturas-panel-strong);
}

.previaturas-tool-header h2 {
  margin: 0;
  color: var(--main-text);
}

.previaturas-page #calc-toggle,
.previaturas-page #calc-reset {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--previaturas-border);
  background: transparent;
  color: var(--main-text);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.previaturas-page #calc-toggle:hover,
.previaturas-page #calc-reset:hover {
  border-color: var(--link);
  color: var(--link);
  transform: translateY(-1px);
}

.previaturas-page #calc-toggle.active {
  border-color: rgba(111, 207, 138, 0.45);
  background: rgba(111, 207, 138, 0.12);
  color: var(--previaturas-success);
}

.previaturas-page #calc-reset {
  color: var(--previaturas-exam);
}

.previaturas-page #credits-bar {
  position: sticky;
  top: 3.9rem;
  z-index: 40;
  display: none;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
  padding: 1rem 1.5rem;
  background: rgba(24, 24, 24, 0.96);
  border-bottom: 1px solid var(--previaturas-border);
  backdrop-filter: blur(10px);
}

.previaturas-page #credits-bar.visible {
  display: flex;
}

.previaturas-page #credits-bar .credits-total {
  min-width: 156px;
  color: var(--main-text);
  font-size: 1.25rem;
  font-weight: 700;
}

.previaturas-page #credits-bar .credits-total .fraction {
  color: var(--previaturas-muted);
  font-size: 0.85rem;
  font-weight: 400;
}

.previaturas-page #credits-bar .credits-groups {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.previaturas-page .credit-group-tag {
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--previaturas-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.025);
  color: var(--previaturas-muted);
  font-size: 0.72rem;
  white-space: nowrap;
}

.previaturas-page .credit-group-tag .cg-count {
  font-weight: 700;
  color: var(--main-text);
}

.previaturas-page .credit-group-tag.met {
  color: var(--previaturas-success);
}

.previaturas-page .credit-group-tag.unmet .cg-count {
  color: var(--main-text);
}

.previaturas-page #credits-bar .credits-progress {
  width: 100%;
  height: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.previaturas-page #credits-bar .credits-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--link), var(--previaturas-success));
  border-radius: 999px;
  transition: width 0.3s ease;
}

.previaturas-page .legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1rem;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--previaturas-border);
  background: rgba(255, 255, 255, 0.02);
  font-size: 0.82rem;
}

.previaturas-page .legend-item,
.previaturas-page .legend-line {
  display: inline-flex;
  gap: 0.45rem;
  align-items: center;
}

.previaturas-page .legend-color {
  width: 13px;
  height: 13px;
  border: 1px solid transparent;
  border-radius: 4px;
}

.previaturas-page .legend-color-matematica {
  background: #1a2744;
  border-color: #2a4070;
}

.previaturas-page .legend-color-programacion {
  background: #1a3324;
  border-color: #2a5040;
}

.previaturas-page .legend-color-arq {
  background: #332a1a;
  border-color: #504020;
}

.previaturas-page .legend-color-bd {
  background: #2a1a33;
  border-color: #402a50;
}

.previaturas-page .legend-color-desarrollo {
  background: #331a1a;
  border-color: #502a2a;
}

.previaturas-page .legend-color-humanas {
  background: #33301a;
  border-color: #504a20;
}

.previaturas-page .legend-color-proyecto {
  background: #1f2028;
  border-color: #3a3d4a;
}

.previaturas-page .legend-color-optional {
  position: relative;
  overflow: hidden;
  background: transparent;
  border-color: var(--previaturas-border);
}

.previaturas-page .legend-color-optional::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 8px 8px 0 0;
  border-color: var(--link) transparent transparent transparent;
}

.previaturas-page .legend-separator {
  width: 1px;
  align-self: stretch;
  background: var(--previaturas-border);
}

.previaturas-page .legend-line svg {
  width: 30px;
  height: 10px;
}

.previaturas-graph-shell {
  padding: 1.1rem;
}

.previaturas-page #pyramid-container {
  position: relative;
  width: 100%;
  min-height: 300px;
  padding: 0.75rem 0.35rem 1.8rem;
  overflow-x: auto;
  overflow-y: visible;
  border: 1px solid rgba(115, 171, 222, 0.15);
  border-radius: 12px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0.025)),
    var(--background);
  -webkit-overflow-scrolling: touch;
}

.previaturas-page #connections {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 12;
}

.previaturas-page .semester-header {
  margin-top: 0.4rem;
  padding: 1rem 0 0.45rem;
  color: var(--link);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-align: center;
  text-transform: uppercase;
}

.previaturas-page .semester-header:first-child {
  margin-top: 0;
}

.previaturas-page .level {
  position: relative;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  justify-content: center;
  margin-bottom: 1rem;
}

.previaturas-page .subject {
  position: relative;
  z-index: 10;
  min-width: 132px;
  max-width: 210px;
  padding: 0.8rem 0.9rem;
  border: 1px solid transparent;
  border-radius: 10px;
  text-align: center;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease,
    opacity 0.2s ease;
}

.previaturas-page .subject:hover,
.previaturas-page .subject.active {
  transform: translateY(-2px);
}

.previaturas-page .subject:hover {
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.26);
}

.previaturas-page .subject.active {
  z-index: 20;
  border-color: #fff;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.35);
}

.previaturas-page .subject.dimmed {
  z-index: 1;
  opacity: 0.26;
}

.previaturas-page .subject.highlighted {
  z-index: 15;
  opacity: 1;
}

.previaturas-page .subject-code {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  opacity: 0.8;
}

.previaturas-page .subject-name {
  margin-top: 0.25rem;
  font-size: 0.69rem;
  line-height: 1.3;
  font-weight: 600;
}

.previaturas-page .subject-credits-inline {
  font-size: 0.92em;
  font-weight: 500;
  opacity: 0.72;
  white-space: nowrap;
}

.previaturas-page .subject.optional::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 14px 14px 0 0;
  border-color: var(--link) transparent transparent transparent;
  border-radius: 9px 0 0 0;
}

.previaturas-page .group-matematica {
  background: #1a2744;
  color: #7db3ff;
  border-color: #2a4070;
}

.previaturas-page .group-matematica.active,
.previaturas-page .group-matematica.highlighted {
  border-color: #7db3ff;
}

.previaturas-page .group-programacion {
  background: #1a3324;
  color: #6fcf8a;
  border-color: #2a5040;
}

.previaturas-page .group-programacion.active,
.previaturas-page .group-programacion.highlighted {
  border-color: #6fcf8a;
}

.previaturas-page .group-arq {
  background: #332a1a;
  color: #f0a050;
  border-color: #504020;
}

.previaturas-page .group-arq.active,
.previaturas-page .group-arq.highlighted {
  border-color: #f0a050;
}

.previaturas-page .group-bd {
  background: #2a1a33;
  color: #c08af0;
  border-color: #402a50;
}

.previaturas-page .group-bd.active,
.previaturas-page .group-bd.highlighted {
  border-color: #c08af0;
}

.previaturas-page .group-desarrollo {
  background: #331a1a;
  color: #f07070;
  border-color: #502a2a;
}

.previaturas-page .group-desarrollo.active,
.previaturas-page .group-desarrollo.highlighted {
  border-color: #f07070;
}

.previaturas-page .group-humanas {
  background: #33301a;
  color: #e0d060;
  border-color: #504a20;
}

.previaturas-page .group-humanas.active,
.previaturas-page .group-humanas.highlighted {
  border-color: #e0d060;
}

.previaturas-page .group-proyecto {
  background: #1f2028;
  color: #a0a4b0;
  border-color: #3a3d4a;
}

.previaturas-page .group-proyecto.active,
.previaturas-page .group-proyecto.highlighted {
  border-color: #a0a4b0;
}

.previaturas-page .subject.checked {
  box-shadow: 0 0 0 2px var(--previaturas-success), inset 0 0 16px rgba(111, 207, 138, 0.12);
}

.previaturas-page .subject.checked::after {
  content: "\2713";
  position: absolute;
  top: 0.3rem;
  right: 0.4rem;
  color: var(--previaturas-success);
  font-size: 0.72rem;
  font-weight: 700;
}

.previaturas-page #info-panel {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  z-index: 100;
  display: grid;
  grid-template-columns: minmax(200px, 0.9fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  max-width: 1120px;
  margin: 0 auto;
  padding: 1rem 1.1rem;
  border: 1px solid var(--previaturas-border);
  border-radius: 14px;
  background: rgba(24, 24, 24, 0.96);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(12px);
  max-height: min(60vh, 520px);
  overflow-y: auto;
  transform: translateY(calc(100% + 1rem));
  transition: transform 0.25s ease;
}

.previaturas-page #info-panel.visible {
  transform: translateY(0);
}

.previaturas-page #info-panel .info-main h3 {
  margin: 0;
  font-size: 0.98rem;
  color: var(--main-text);
}

.previaturas-page #info-panel .info-code,
.previaturas-page #info-panel .info-meta {
  font-size: 0.77rem;
  color: var(--previaturas-muted);
}

.previaturas-page #info-panel .info-code {
  margin-bottom: 0.25rem;
  letter-spacing: 0.08em;
}

.previaturas-page #info-panel .info-meta {
  margin-top: 0.45rem;
}

.previaturas-page #info-panel .info-deps h4 {
  margin: 0 0 0.55rem;
  color: var(--main-text);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.previaturas-page #info-panel .dep-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.previaturas-page #info-panel .dep-tag {
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.72rem;
  line-height: 1.35;
}

.previaturas-page #info-panel .dep-tag.curso {
  border-left: 3px solid var(--previaturas-course);
}

.previaturas-page #info-panel .dep-tag.examen {
  border-left: 3px solid var(--previaturas-exam);
}

.previaturas-page #close-panel {
  position: absolute;
  top: 0.5rem;
  right: 0.6rem;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--previaturas-muted);
  font-size: 1.2rem;
  cursor: pointer;
}

.previaturas-page #close-panel:hover {
  color: var(--main-text);
  background: rgba(255, 255, 255, 0.05);
}

@media (max-width: 960px) {
  .previaturas-page-header {
    display: block;
  }

  .previaturas-page .previaturas-tool-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .previaturas-page #info-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .previaturas-page-header {
    gap: 1rem;
    margin-bottom: 1.25rem;
  }

  .previaturas-summary {
    font-size: 0.98rem;
    line-height: 1.55;
  }

  .previaturas-intro,
  .previaturas-page .legend,
  .previaturas-page .previaturas-tool-header,
  .previaturas-page #credits-bar {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .previaturas-graph-shell {
    padding: 0.8rem;
  }

  .previaturas-page #pyramid-container {
    min-height: 0;
    padding: 0.65rem 0.25rem 1.1rem;
    overflow-x: hidden;
  }

  .previaturas-page .level {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem;
    min-width: 0;
    margin-bottom: 0.8rem;
  }

  .previaturas-page .semester-header {
    min-width: 0;
    text-align: left;
    padding: 0.8rem 0.35rem 0.35rem;
  }

  .previaturas-page .subject {
    min-width: 0;
    max-width: none;
    width: 100%;
    padding: 0.65rem 0.55rem;
    border-radius: 9px;
  }

  .previaturas-page .subject-code {
    font-size: 0.63rem;
  }

  .previaturas-page .subject-name {
    font-size: 0.62rem;
    line-height: 1.22;
  }

  .previaturas-page .previaturas-tool-header {
    flex-direction: column;
    align-items: stretch;
    gap: 0.8rem;
  }

  .previaturas-page #calc-toggle,
  .previaturas-page #calc-reset {
    width: 100%;
  }

  .previaturas-page .legend {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.35rem 0.75rem;
    align-items: start;
    font-size: 0.72rem;
  }

  .previaturas-page .legend-item,
  .previaturas-page .legend-line {
    min-width: 0;
    padding: 0.1rem 0;
    border: none;
    border-radius: 0;
    background: transparent;
    line-height: 1.25;
  }

  .previaturas-page .legend-separator {
    display: block;
    grid-column: 1 / -1;
    width: 100%;
    height: 1px;
    margin: 0.2rem 0 0.1rem;
  }

  .previaturas-page .legend-line {
    grid-column: auto;
    justify-content: flex-start;
  }

  .previaturas-page .legend-color {
    width: 11px;
    height: 11px;
    flex: 0 0 auto;
  }

  .previaturas-page #info-panel {
    right: 0.75rem;
    bottom: 0.75rem;
    left: 0.75rem;
    padding: 0.95rem;
    max-height: 65vh;
  }
}

@media (max-width: 520px) {
  .previaturas-page-header h1 {
    font-size: 1.7rem;
  }

  .previaturas-page .previaturas-tool-header,
  .previaturas-page #credits-bar,
  .previaturas-page .legend {
    padding-left: 0.85rem;
    padding-right: 0.85rem;
  }

  .previaturas-graph-shell {
    padding: 0.7rem;
  }

  .previaturas-page .subject {
    padding: 0.6rem 0.48rem;
  }

  .previaturas-page .subject-name {
    font-size: 0.58rem;
  }

  .previaturas-page .level {
    grid-template-columns: 1fr;
  }

  .previaturas-page #credits-bar {
    top: 3.6rem;
    gap: 0.7rem;
  }

  .previaturas-page #credits-bar .credits-total {
    min-width: 0;
    font-size: 1.1rem;
  }

  .previaturas-page .credit-group-tag {
    font-size: 0.67rem;
  }

  .previaturas-page .legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.28rem 0.6rem;
    font-size: 0.7rem;
  }

  .previaturas-page .legend-line {
    grid-column: auto;
    justify-content: flex-start;
  }

  .previaturas-page .legend-item,
  .previaturas-page .legend-line {
    padding: 0.08rem 0;
  }

  .previaturas-page .legend-separator {
    margin: 0.15rem 0;
  }

  .previaturas-page #info-panel {
    right: 0.5rem;
    bottom: 0.5rem;
    left: 0.5rem;
    padding: 0.85rem;
  }
}