/* ==========================================================================
   LABIO — LIGA ACADÊMICA DE BIOENGENHARIA (UFPI)
   Sistema de Identidade Visual • Edição 1.1
   Referência: docs/manual-identidade-visual.md
   ========================================================================== */

@font-face {
  font-family: "Nexa PRO";
  src:
    url("../fonts/NexaPro_Trial_Variable-Regular.ttf?v=2") format("truetype-variations"),
    url("../fonts/NexaPro_Trial_Variable-Regular.ttf?v=2") format("truetype");
  font-weight: 100 650;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Nexa PRO";
  src: url("../fonts/NexaPro_Trial-Bold.otf?v=2") format("opentype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Nexa PRO";
  src: url("../fonts/NexaPro_Trial-ExtraBold.otf?v=2") format("opentype");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Nexa Text PRO";
  src:
    url("../fonts/NexaTextPro_Trial_Variable-Regular.ttf?v=2") format("truetype-variations"),
    url("../fonts/NexaTextPro_Trial_Variable-Regular.ttf?v=2") format("truetype");
  font-weight: 100 650;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Nexa Text PRO";
  src: url("../fonts/NexaTextPro_Trial-Bold.otf?v=2") format("opentype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Paleta Principal (medida nos anexos oficiais) */
  --color-blue: #38B6FF;
  --color-red: #FF3131;
  --color-white: #FFFFFF;      /* Branco — Superfície principal e proteção da marca */
  --labio-azul: var(--color-blue);
  --labio-vermelho: var(--color-red);

  --color-night: #122B3A;      /* Azul-noite — Títulos, textos e fundos escuros (14.66:1 no branco) */
  --color-slate: #526572;      /* Cinza — Textos secundários (6.06:1 no branco) */
  --color-mist: #EFF6FA;

  --color-border: #D4E2EC;
  --color-border-strong: #B8CEDD;
  --color-night-elevated: #19384B;
  --color-night-border: rgba(239, 246, 250, 0.16);
  --color-night-muted: #C2D4E0;

  --font-display: "Nexa PRO", system-ui, -apple-system, sans-serif;
  --font-body: "Nexa Text PRO", system-ui, -apple-system, sans-serif;
  --font-mono: "DejaVu Sans Mono", Consolas, monospace;

  /* Módulo Digital de 8 px (Seção 12) */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --space-10: 80px;
  --space-12: 96px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --section-fade: clamp(96px, 11.25vw, 180px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-synthesis: none;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--color-white);
  color: var(--color-night);
  font-family: var(--font-body);
  font-weight: 430;
  font-variation-settings: "wght" 430;
  font-optical-sizing: auto;
  font-size: 16px;
  line-height: 1.5; /* Entrelinha de 135–150% do corpo conforme Seção 11 */
  overflow-x: hidden;
  text-align: left;
}

h1, h2, h3, h4 {
  margin-top: 0;
  font-family: var(--font-display);
  color: var(--color-night);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

p {
  margin-top: 0;
  max-width: 72ch; /* Medida confortável (< 80 caracteres) */
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button,
a {
  touch-action: manipulation;
}

/* Foco visível para navegação por teclado (WCAG 2.2) */
:focus-visible {
  outline: 2px solid var(--color-night);
  outline-offset: 3px;
}

.areas :focus-visible,
.selection-panel :focus-visible {
  outline-color: var(--color-blue);
}

#sobre,
#projetos,
#frentes,
#membros,
#seletivo,
#inicio {
  scroll-margin-top: 88px;
}

/* Exceção técnica monoespaçada (Seção 11) */
.tech-code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--color-mist);
  color: var(--color-night);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--color-border);
}

.areas .tech-code {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.18);
}

.section-shell {
  max-width: 1248px;
  margin: 0 auto;
  padding-left: var(--space-8);
  padding-right: var(--space-8);
}

/* Rótulos de Editoria — A cor não é a única distinção (Seção 10 e 15) */
.section-header-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.editorial-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-night);
  flex-shrink: 0;
}

.editorial-tag-dark {
  color: var(--color-white);
}

.tag-marker {
  display: inline-block;
  width: 10px;
  height: 10px;
  flex-shrink: 0;
}

/* Formas geométricas distintas além da cor (Seção 10) */
.marker-red {
  background-color: var(--color-red);
  transform: rotate(45deg);
}

.marker-blue {
  background-color: var(--color-blue);
  border-radius: 50%;
}

.section-rule {
  flex: 1;
  height: 2px; /* Traços de 2–3 px conforme Seção 12 */
  background-color: var(--color-border);
}

.section-rule.rule-dark {
  background-color: var(--color-night-border);
}

.icon-frame {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 0;
  background-color: var(--color-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-slate);
  position: relative;
}

.icon-frame-dark {
  background-color: rgba(255, 255, 255, 0.04);
  color: var(--color-night-muted);
}

.site-icon {
  width: 24px;
  height: 24px;
  display: block;
  object-fit: contain;
}

.site-icon[src=""] {
  display: none;
}

.icon-frame-sm {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  margin-top: 1px;
}

.icon-frame-sm .site-icon {
  width: 16px;
  height: 16px;
}

.button {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  cursor: pointer;
  min-height: 48px;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease), transform 0.15s var(--ease);
}

.button:active {
  transform: scale(0.98);
}

/* Botão Azul-noite com texto Branco — Contraste 14.66:1 (Seção 10) */
.button-night {
  background-color: var(--color-night);
  color: var(--color-white);
  border-color: var(--color-night);
}

.button-night:hover {
  background-color: var(--color-night-elevated);
  border-color: var(--color-night-elevated);
}

.button-outline {
  background-color: var(--color-white);
  color: var(--color-night);
  border-color: var(--color-night);
}

.button-outline:hover {
  background-color: var(--color-mist);
}

.button-full {
  width: 100%;
}

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Três camadas: base vermelha, plano azul e face com o rótulo acessível. */
.header-button {
  --header-button-step: 8px;
  position: relative;
  display: inline-grid;
  flex-shrink: 0;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  appearance: none;
  box-shadow: none;
  color: var(--color-night);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
}

.header-button > span {
  display: grid;
  place-items: center;
  min-height: 44px;
  border: 0;
  border-radius: inherit;
  box-shadow: none;
  pointer-events: none;
}

.header-button-sizer,
.header-button-layer {
  opacity: 0;
}

.header-button-sizer {
  padding: 10px 16px;
  background: var(--labio-vermelho);
  color: transparent;
  transition: opacity 220ms ease;
}

.header-button-layer,
.header-button-face {
  position: absolute;
  inset: 0;
  transform: translate(0, 0);
  transition: transform 220ms ease, opacity 220ms ease;
}

.header-button-layer {
  background: var(--labio-azul);
}

.header-button-face {
  padding: 10px 16px;
  background: var(--color-white);
}

.header-button-primary {
  font-weight: 800;
}

@media (hover: hover) and (pointer: fine) {
  .header-button:hover > :is(.header-button-sizer, .header-button-layer) {
    opacity: 1;
  }

  .header-button:hover > .header-button-layer {
    transform: translate(calc(-1 * var(--header-button-step)), calc(-1 * var(--header-button-step)));
  }

  .header-button:hover > .header-button-face {
    transform: translate(calc(-2 * var(--header-button-step)), calc(-2 * var(--header-button-step)));
  }
}

.header-button:is(:focus-visible, :active) > :is(.header-button-sizer, .header-button-layer) {
  opacity: 1;
}

.header-button:focus-visible > .header-button-layer {
  transform: translate(calc(-1 * var(--header-button-step)), calc(-1 * var(--header-button-step)));
}

.header-button:focus-visible > .header-button-face {
  transform: translate(calc(-2 * var(--header-button-step)), calc(-2 * var(--header-button-step)));
}

.header-button:active > .header-button-layer {
  transform: translate(calc(-0.5 * var(--header-button-step)), calc(-0.5 * var(--header-button-step)));
}

.header-button:active > .header-button-face {
  transform: translate(calc(-1 * var(--header-button-step)), calc(-1 * var(--header-button-step)));
}

.header-actions {
  display: flex;
  align-items: center;
  margin-left: auto;
  gap: var(--space-2);
}

.nav-cta {
  font-size: 13px;
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
}

.menu-button > .header-button-sizer,
.menu-button > .header-button-face {
  padding: 0;
}

.menu-button > .header-button-face {
  display: flex;
  flex-direction: column;
  gap: 5px;
  justify-content: center;
  align-items: center;
}

.menu-button > .header-button-face > span {
  width: 18px;
  height: 2px;
  background: var(--color-night);
}

.hero {
  padding: var(--space-8) 0 var(--space-10);
  background: var(--color-white);
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.hero-flows {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 600ms var(--ease);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 12%, #000 58%, rgba(0, 0, 0, 0.8) 72%, rgba(0, 0, 0, 0.3) 88%, transparent);
  mask-image: linear-gradient(to bottom, transparent, #000 12%, #000 58%, rgba(0, 0, 0, 0.8) 72%, rgba(0, 0, 0, 0.3) 88%, transparent);
}

.hero-flows.is-ready {
  opacity: 1;
}

.hero-flow-track,
.hero-flow-stream {
  fill: none;
  vector-effect: non-scaling-stroke;
  stroke-linecap: round;
}

.hero-flow-red {
  stroke: var(--labio-vermelho);
}

.hero-flow-blue {
  stroke: var(--labio-azul);
}

.hero-flow-track {
  stroke-width: 0.85;
  stroke-opacity: 0.22;
}

.hero-flow-stream {
  stroke-width: 1.25;
  stroke-opacity: 0.7;
  stroke-dasharray: 0.12 0.88;
  animation: hero-flow-inward var(--flow-duration) linear infinite;
  animation-delay: var(--flow-delay);
}

@keyframes hero-flow-inward {
  from { stroke-dashoffset: 1; }
  to { stroke-dashoffset: 0; }
}

.hero.is-outside-viewport .hero-flow-stream,
.hero.is-outside-viewport .emblem-wheel {
  animation-play-state: paused;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(0, 0.84fr);
  align-items: center;
  gap: var(--space-4);
}

.hero-main {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
  text-align: left;
}

/* Emblema em camadas: o centro geométrico é também o centro do viewBox.
   A margem inclui as pontas diagonais em todos os ângulos de rotação. */
.hero-emblem {
  position: relative;
  width: min(100%, 440px);
  margin: 0 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  min-width: 0;
}

.labio-motion {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  overflow: visible;
}

/* O relevo é estático dentro de uma camada HTML que só rotaciona por transform. */
.emblem-wheel {
  position: absolute;
  inset: 0;
  z-index: 0;
  contain: paint;
  will-change: transform;
  animation: labio-gear-spin 57s linear infinite;
}

.emblem-wheel-svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

@keyframes labio-gear-spin {
  from { transform: translate3d(0, 0, 0) rotate(0deg); }
  to { transform: translate3d(0, 0, 0) rotate(360deg); }
}

@media print {
  .hero-flows {
    display: none;
  }

  .emblem-pulse-base {
    opacity: 1;
  }

  .emblem-pulse-active,
  .emblem-pulse-glow {
    display: none;
  }
}

/* O PNG já tem transparência; não recebe painel nem preenchimento atrás. */
.brand-signature-box {
  background: transparent;
  border: none;
  padding: 0;
  margin: 0 0 var(--space-4);
  display: inline-block;
  max-width: 100%;
}

.brand-signature-img {
  width: 340px;
  max-width: 100%;
  min-width: 0;
  height: auto;
  display: block;
}

/* Título real no HTML: leitura imediata, inclusive sem JavaScript. */
.hero-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 4.2vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--color-night);
  margin: 0 0 var(--space-3);
  max-width: 20ch;
}

.hero-title-red {
  color: var(--labio-vermelho);
}

.hero-title-blue {
  color: var(--labio-azul);
}

.hero-lead {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.5;
  color: var(--color-slate);
  margin: 0 0 var(--space-4);
  max-width: 58ch;
  text-wrap: pretty;
}

.hero-lead strong {
  color: var(--color-night);
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-2);
}

.hero-actions .button {
  min-height: 48px;
}

.pillars-panel {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  position: relative;
  overflow: hidden;
}

.pillars-heading {
  font-size: 22px;
  margin: var(--space-2) 0 var(--space-1);
}

.pillars-desc {
  font-size: 14px;
  color: var(--color-slate);
  margin-bottom: var(--space-3);
}

/* Linhas de conexão (2px) e nós circulares (Seção 12) */
.pillars-list {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.pillars-list::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 6px;
  width: 2px;
  background-color: var(--color-border);
}

.pillar-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  position: relative;
}

.pillar-node {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--color-white);
  border: 3px solid var(--color-blue);
  flex-shrink: 0;
  margin-top: 3px;
  position: relative;
  z-index: 1;
}

.pillar-node.node-red {
  border-color: var(--color-red);
}

.pillar-node.node-night {
  border-color: var(--color-night);
}

.pillar-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-night);
  margin-bottom: 2px;
}

.pillar-item p {
  font-size: 14px;
  color: var(--color-slate);
  margin: 0;
  line-height: 1.42;
}

.institutional-coexistence {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
}

.coexistence-label {
  display: block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-slate);
  margin-bottom: var(--space-2);
}

.coexistence-logos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.partner-unit {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background-color: var(--color-mist);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.partner-logo-box {
  background-color: transparent;
  border: none;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  height: 40px;
}

.partner-crest {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.partner-grasi {
  height: 30px;
  width: auto;
  max-width: 78px;
  object-fit: contain;
}

.partner-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.partner-meta strong {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-night);
  line-height: 1.25;
}

.partner-meta span {
  font-size: 11px;
  color: var(--color-slate);
  line-height: 1.25;
}

.intro {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-8);
  align-items: start;
}

.intro h2 {
  font-size: clamp(28px, 3.2vw, 40px);
  margin-bottom: var(--space-3);
}

.intro-lead {
  font-size: 18px;
  color: var(--color-night);
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: var(--space-2);
}

.intro-body {
  font-size: 16px;
  color: var(--color-slate);
  line-height: 1.5;
  margin: 0;
}

.projects {
  padding-top: var(--space-10);
  padding-bottom: var(--space-12);
  background: linear-gradient(to bottom, var(--color-white), var(--color-mist) var(--section-fade));
}

.projects-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.projects-title-group {
  min-width: 0;
  max-width: 760px;
}

.projects-title-group h2 {
  font-size: clamp(28px, 3.2vw, 40px);
  margin-bottom: var(--space-2);
}

.projects-desc {
  font-size: 16px;
  color: var(--color-slate);
  margin: 0;
  max-width: 58ch;
  line-height: 1.6;
}

.carousel-nav {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  flex-shrink: 0;
}

.carousel-btn,
.proto-nav-btn {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  padding: 0;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-night);
  cursor: pointer;
  transition: background-color 160ms var(--ease);
}

.carousel-btn svg,
.proto-nav-btn svg,
.proto-zoom-trigger svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.carousel-indicator,
.proto-counter {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-slate);
  white-space: nowrap;
}

.carousel-indicator {
  text-align: center;
  min-width: 100px;
}

.carousel-viewport {
  overflow: hidden;
  background: transparent;
}

.carousel-track {
  display: flex;
  align-items: flex-start;
  transition: transform 300ms var(--ease);
}

.carousel-slide {
  flex: 0 0 100%;
  min-width: 0;
}

.slide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: var(--space-4) var(--space-6);
}

.slide-visual,
.slide-content {
  min-width: 0;
}

.project-art-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.device-mockup-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-2);
}

.device-stage-label {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--color-slate);
}

.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-night);
}

.status-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--labio-azul);
}

.status-tag.pending::before {
  background: var(--labio-vermelho);
}

.prototype-carousel {
  min-width: 0;
}

.proto-carousel-viewport {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.proto-carousel-track,
.project-progress-visual {
  height: clamp(380px, 38vw, 500px);
}

.proto-carousel-track {
  position: relative;
}

.proto-carousel-item {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms var(--ease);
}

.proto-carousel-item.active {
  opacity: 1;
  pointer-events: auto;
}

.proto-img-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: var(--color-mist);
}

.proto-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  cursor: zoom-in;
}

.proto-zoom-trigger {
  position: absolute;
  right: 12px;
  bottom: 12px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.94);
  color: var(--color-night);
  cursor: zoom-in;
  transition: background-color 160ms var(--ease);
}

.proto-nav-bar {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 44px;
  align-items: center;
  gap: var(--space-1);
  padding-top: var(--space-1);
  background: var(--color-white);
}

.proto-counter {
  text-align: center;
}

@media (hover: hover) and (pointer: fine) {
  .carousel-btn:hover,
  .proto-nav-btn:hover {
    background: var(--color-border);
  }

  .proto-zoom-trigger:hover {
    background: var(--labio-azul);
  }
}

.project-progress-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  background: var(--color-mist);
  border-radius: var(--radius-sm);
}

.progress-illustration {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.illustration-disclaimer {
  font-size: 12px;
  line-height: 1.55;
  color: var(--color-slate);
  margin: 0;
}

.slide-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.project-tag {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-slate);
  margin-bottom: var(--space-2);
}

.project-title {
  font-size: clamp(24px, 2.3vw, 32px);
  line-height: 1.2;
  margin-bottom: var(--space-2);
}

.project-lead {
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-slate);
  margin-bottom: var(--space-3);
}

.project-details {
  grid-column: 1 / -1;
  display: grid;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-strong);
}

.function-breakdown {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.function-step {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  align-items: start;
  gap: 12px;
}

.step-num {
  padding-top: 2px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 800;
  color: var(--color-slate);
}

.step-body h4,
.progress-notice-item h4 {
  font-size: 16px;
  line-height: 1.35;
  margin-bottom: var(--space-1);
}

.step-body p,
.progress-notice-item p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-slate);
  margin: 0;
}

.projects .tech-code {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--color-night);
  font-family: inherit;
  font-size: inherit;
  font-weight: 700;
}

.progress-notice-box {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.tech-stack-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-2);
  list-style: none;
  margin: 0;
  padding: var(--space-2) 0 0;
  border-top: 1px solid var(--color-border);
}

.tech-pill {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-night);
}

.tech-pill:not(:last-child)::after {
  content: '/';
  margin-left: var(--space-2);
  font-weight: 400;
  color: var(--color-border-strong);
}

.proto-lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s var(--ease);
}

.proto-lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.proto-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(18, 43, 58, 0.88);
}

.proto-lightbox-content {
  position: relative;
  z-index: 1;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  max-width: 920px;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.proto-lightbox-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px var(--space-3);
  background-color: var(--color-mist);
  border-bottom: 1px solid var(--color-border);
}

.proto-lightbox-badge {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-night);
}

.proto-lightbox-close {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-night);
  background-color: var(--color-white);
  border: 1px solid var(--color-border-strong);
  border-radius: 4px;
  padding: 6px 14px;
  cursor: pointer;
}

.proto-lightbox-close:hover {
  background-color: var(--color-night);
  color: var(--color-white);
}

.proto-lightbox-img-wrapper {
  background-color: var(--color-night);
  max-height: 68vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.proto-lightbox-img-wrapper img {
  max-height: 68vh;
  width: auto;
  object-fit: contain;
}

.proto-lightbox-info {
  padding: var(--space-2) var(--space-3);
}

.proto-lightbox-title {
  font-size: 18px;
  margin-bottom: 4px;
}

.proto-lightbox-caption {
  font-size: 14px;
  color: var(--color-slate);
  margin: 0;
}

.areas {
  /* O degradê ocupa o respiro; o conteúdo branco começa sobre azul-noite sólido. */
  padding-top: calc(var(--section-fade) + var(--space-4));
  padding-bottom: calc(var(--section-fade) + var(--space-4));
  background: linear-gradient(to bottom, var(--color-mist), var(--color-night) var(--section-fade), var(--color-night) calc(100% - var(--section-fade)), var(--color-white));
  color: var(--color-white);
}

.areas h2,
.areas h3 {
  color: var(--color-white);
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.section-heading h2 {
  font-size: clamp(28px, 3.2vw, 40px);
  margin-bottom: var(--space-2);
}

.areas-lead {
  color: var(--color-night-muted);
  font-size: 16px;
  margin: 0;
  max-width: 54ch;
}

.areas-summary {
  margin: 0;
  display: flex;
  gap: var(--space-4);
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-night-elevated);
  border: 1px solid var(--color-night-border);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.areas-summary div {
  display: flex;
  flex-direction: column-reverse;
}

.areas-summary dt {
  font-size: 12px;
  color: var(--color-night-muted);
}

.areas-summary dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.1;
}

.areas-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-2);
}

.area-card {
  background-color: var(--color-night-elevated);
  border: 1px solid var(--color-night-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s var(--ease);
}

.area-card:hover {
  border-color: var(--color-blue);
}

.area-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}

.area-tag {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-night-muted);
}

.area-card h3 {
  font-size: 19px;
  margin-bottom: var(--space-1);
}

.area-card p {
  font-size: 14px;
  color: var(--color-night-muted);
  line-height: 1.48;
  margin: 0;
}

.members {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.members-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.members-top h2 {
  font-size: clamp(28px, 3.2vw, 40px);
  margin: 0;
}

.members-top p {
  font-size: 15px;
  color: var(--color-slate);
  max-width: 44ch;
  margin: 0;
}

.member-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}

.member-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s var(--ease);
}

.member-card:hover {
  border-color: var(--color-night);
}

.member-card.lead {
  border-top: 3px solid var(--color-blue);
}

.member-portrait {
  height: 256px;
  background-color: var(--color-mist);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--space-2);
}

.member-portrait img {
  height: 95%;
  width: auto;
  max-width: 92%;
  object-fit: contain;
  object-position: bottom center;
}

.member-info {
  padding: var(--space-2);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-1);
  flex: 1;
}

.member-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.member-role {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-slate);
}

.member-info h3 {
  font-size: 16px;
  margin: 0;
}

.member-course {
  font-size: 12.5px;
  color: var(--color-slate);
}

.member-social-link {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background-color: var(--color-mist);
  border: 1px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.member-social-link:hover:not(.is-disabled) {
  background-color: var(--color-blue);
  border-color: var(--color-blue);
}

.member-social-link.is-disabled {
  opacity: 0.32;
  cursor: default;
  pointer-events: none;
}

.member-icon-img {
  width: 16px;
  height: 16px;
  object-fit: contain;
}

.member-note {
  font-size: 13px;
  color: var(--color-slate);
  margin: var(--space-3) 0 0;
}

.selection-section {
  padding-bottom: var(--space-12);
}

.selection-panel {
  background-color: var(--color-night);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
}

/* Faixa superior completa: 35% azul LABIO à esquerda e 65% vermelho à direita. */
.pillars-panel::before,
.selection-panel::before {
  content: "";
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  pointer-events: none;
  background: linear-gradient(90deg, var(--color-blue) 0%, var(--color-blue) 35%, var(--color-red) 35%, var(--color-red) 100%);
}

.selection-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-8);
  align-items: center;
}

.selection-copy h2 {
  color: var(--color-white);
  font-size: clamp(28px, 3.4vw, 42px);
  margin: var(--space-2) 0 var(--space-2);
}

.selection-copy p {
  color: var(--color-night-muted);
  font-size: 16px;
  line-height: 1.5;
  margin: 0;
}

.selection-card {
  background-color: var(--color-white);
  color: var(--color-night);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.card-kicker {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-slate);
  margin-bottom: var(--space-1);
}

.selection-card h3 {
  font-size: 24px;
  margin-bottom: var(--space-1);
}

.selection-date {
  font-size: 14px;
  color: var(--color-slate);
  margin-bottom: var(--space-3);
}

.selection-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer {
  background: linear-gradient(to bottom, var(--color-white), var(--color-mist) var(--space-10));
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.footer-brand-col {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

/* Assinatura com a mesma altura da marca GRASI. */
.footer-signature-panel {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  background-color: transparent;
  border: none;
  padding: 0;
  text-decoration: none;
}

.footer-signature-img {
  width: auto;
  height: 28px;
  display: block;
}

.footer-inst-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  max-width: 660px;
}

.footer-inst-logos {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background-color: transparent;
  border: none;
  padding: 0;
  flex-shrink: 0;
}

.footer-logo-divider {
  width: 1px;
  height: 28px;
  background-color: var(--color-border-strong);
}

.footer-ufpi-crest {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.footer-grasi-logo {
  height: 28px;
  width: auto;
  max-width: 76px;
  object-fit: contain;
}

.footer-address {
  display: inline-flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12.5px;
  color: var(--color-slate);
  text-decoration: none;
  line-height: 1.42;
  transition: color 0.18s var(--ease);
}

.footer-address:hover {
  color: var(--color-night);
}

.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  flex-shrink: 0;
}

.footer-links {
  display: flex;
  gap: var(--space-3);
}

.footer-links a {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-night);
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--color-slate);
}

.footer-copy-icon {
  width: 12px;
  height: 12px;
  object-fit: contain;
  opacity: 0.75;
}

.reveal {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .carousel-track,
  .proto-carousel-item {
    transition: none;
  }

  .hero-flows {
    transition-duration: 200ms;
  }

  .hero-flow-track {
    stroke-opacity: 0.18;
  }

  .hero-flow-stream {
    animation-duration: calc(var(--flow-duration) * 2.5);
    stroke-opacity: 0.6;
  }

  .hero-flow-stream:not(:nth-child(3n)) {
    display: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 1120px) {
  .section-shell {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .areas-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .member-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 920px) {
  .header-inner {
    height: 72px;
  }

  .nav {
    display: none;
  }

  .header-actions {
    width: 100%;
    margin-left: 0;
    justify-content: space-between;
  }

  .menu-button {
    display: inline-grid;
  }

  .nav.is-open {
    position: absolute;
    top: 72px;
    left: var(--space-2);
    right: var(--space-2);
    background-color: var(--color-white);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
    max-height: calc(100vh - 88px);
    max-height: calc(100dvh - 88px);
    overflow-y: auto;
    box-shadow: 0 16px 32px rgba(18, 43, 58, 0.12);
  }

  .nav.is-open a {
    width: 100%;
  }

  .intro-grid,
  .slide-grid,
  .selection-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .function-breakdown,
  .progress-notice-box {
    grid-template-columns: minmax(0, 1fr);
  }

  .section-heading,
  .projects-top,
  .members-top {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

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

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

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

  .footer-right {
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
  }

  .hero-emblem {
    width: min(72%, 340px);
    margin: 0 auto;
    justify-self: center;
  }
}

@media (max-width: 600px) {
  .section-shell {
    padding-left: var(--space-2);
    padding-right: var(--space-2);
  }

  .hero {
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-emblem {
    width: min(78%, 280px);
  }

  .brand-signature-img {
    min-width: 0;
    width: min(260px, 100%);
    margin: 0;
  }

  .hero-actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .button {
    width: 100%;
  }

  .coexistence-logos {
    grid-template-columns: 1fr;
  }

  .intro,
  .projects,
  .members {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .project-art-card {
    padding: var(--space-2);
  }

  .proto-carousel-track,
  .project-progress-visual {
    height: clamp(280px, 90vw, 380px);
  }

  .areas-summary {
    width: 100%;
    justify-content: space-between;
    gap: var(--space-2);
  }

  .areas-grid,
  .member-grid {
    grid-template-columns: 1fr;
  }

  .selection-panel {
    padding: var(--space-4) var(--space-3);
  }

  .selection-card {
    padding: var(--space-3);
  }

  .footer-inst-wrapper {
    flex-direction: column;
    align-items: flex-start;
  }
}