/* ==========================================================================
   Instituto Triângulo Tech — estilos globais
   v2: dark techno-futurista — teal (#4FD1C5) + violeta elétrico de apoio,
   tipografia Unbounded/Hanken Grotesk/JetBrains Mono, partículas, grain,
   bento grid, cursor custom, scroll-reveal. Ver tokens.css pra fonte da verdade.
   ========================================================================== */

:root {
  --bg: #0a0c10;
  --bg-raised: #12161a;
  --bg-card: #14181d;
  --border: #232a31;
  --text: #e7ecef;
  --text-muted: #9aa4ae;
  --text-faint: #626c76;
  --accent: #4fd1c5;
  --accent-dim: #2f7d76;
  --accent-glow: rgba(79, 209, 197, 0.15);
  --violet: #a78bfa;
  --violet-dim: #6d4fc4;
  --violet-glow: rgba(167, 139, 250, 0.15);
  --font-display: "Unbounded", "Hanken Grotesk", -apple-system, sans-serif;
  --font-sans: "Hanken Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius: 6px;
  --max-width: 1080px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); font-weight: 500; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }
h3 { font-size: 1.3rem; }

p { margin: 0 0 1.2em; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1em;
}

.mono { font-family: var(--font-mono); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--accent-dim);
  border-radius: 999px;
  padding: 0.25em 0.8em;
}

.badge.status-prep {
  color: #e0b25a;
  background: rgba(224, 178, 90, 0.12);
  border-color: rgba(224, 178, 90, 0.4);
}

.badge.status-live {
  color: var(--accent);
  background: var(--accent-glow);
  border-color: var(--accent-dim);
}

.note-card.is-stub {
  opacity: 0.62;
}

.note-card .pub-id {
  font-family: var(--font-mono);
  color: var(--text-faint);
  font-size: 0.72rem;
  text-transform: uppercase;
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(11, 14, 17, 0.85);
  backdrop-filter: blur(8px);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo:hover { text-decoration: none; }

.logo svg { display: block; }

.logo-text {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: 0.02em;
}

.main-nav {
  display: flex;
  gap: 28px;
  flex: 1;
  justify-content: center;
}

.main-nav a {
  color: var(--text-muted);
  font-size: 0.94rem;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text);
  text-decoration: none;
}

.main-nav a.active {
  color: var(--accent);
}

.lang-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
}

.lang-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: transparent;
  color: var(--text-muted);
  border: none;
  padding: 6px 12px;
  cursor: pointer;
}

.lang-btn.active {
  background: var(--accent);
  color: #04211f;
  font-weight: 700;
}

.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  font-size: 1.1rem;
  padding: 4px 10px;
  cursor: pointer;
}

/* ---------- Hero ---------- */

.hero {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  max-width: 16ch;
}

.manifesto {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 62ch;
  margin-top: 1.4em;
}

/* ---------- Sections ---------- */

.section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}

.section:last-of-type { border-bottom: none; }

.section-head {
  max-width: 62ch;
  margin-bottom: 2.4em;
}

/* ---------- Axis cards / grid ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.15s ease;
}

.card:hover {
  border-color: var(--accent-dim);
}

.card .card-index {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  margin-bottom: 0.8em;
  display: block;
}

.card h3 { margin-bottom: 0.5em; }

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1em;
}

.card .card-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* ---------- Research detail blocks ---------- */

.axis-block {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}

.axis-block:last-child { border-bottom: none; }

.axis-block .axis-label {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.axis-block h3 { margin-top: 0.2em; }

.future-list {
  display: grid;
  gap: 20px;
  margin-top: 1.6em;
}

.future-item {
  border-left: 2px solid var(--accent-dim);
  padding: 4px 0 4px 20px;
}

.future-item h4 {
  margin-bottom: 0.3em;
  font-size: 1.05rem;
}

.future-item p {
  color: var(--text-muted);
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* ---------- Publications ---------- */

.pub-layers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 3em;
}

.pub-layer {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.pub-layer h3 {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent);
}

.pub-list {
  display: grid;
  gap: 16px;
}

.pub-card {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 26px;
  flex-wrap: wrap;
}

.pub-card .pub-id {
  font-family: var(--font-mono);
  color: var(--text-faint);
  font-size: 0.78rem;
  display: block;
  margin-bottom: 0.4em;
}

.pub-card h4 {
  margin: 0 0 0.5em;
  font-size: 1.05rem;
  max-width: 46ch;
}

.pub-card .pub-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

/* ---------- Notes empty state ---------- */

.empty-state {
  text-align: center;
  padding: 88px 24px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
}

.empty-state .eyebrow { margin-bottom: 0.4em; }

/* ---------- About ---------- */

.about-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: start;
}

.avatar-placeholder {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  background: var(--bg-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-align: center;
  padding: 16px;
}

.social-links {
  display: flex;
  gap: 14px;
  margin-top: 20px;
}

.social-links a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 14px;
}

.social-links a:hover {
  color: var(--accent);
  border-color: var(--accent-dim);
  text-decoration: none;
}

.solo-note {
  margin-top: 2em;
  padding: 20px 24px;
  border-left: 2px solid var(--accent);
  background: var(--accent-glow);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.95rem;
}

/* ---------- Transparency ---------- */

.transparency-block {
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}

.transparency-block:last-child { border-bottom: none; }

.transparency-block h3 {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-honest {
  background: var(--bg-card);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
  padding: 24px 28px;
}

/* ---------- Email capture ---------- */

.capture {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 44px;
  text-align: center;
}

.capture h2 { margin-bottom: 0.3em; }

.capture p {
  color: var(--text-muted);
  max-width: 50ch;
  margin: 0 auto 1.6em;
}

.capture-form {
  display: flex;
  justify-content: center;
  gap: 10px;
  max-width: 460px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.capture-form input[type="email"] {
  flex: 1;
  min-width: 220px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.95rem;
}

.capture-form input[type="email"]:focus {
  outline: none;
  border-color: var(--accent);
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #04211f;
  font-weight: 700;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius);
  padding: 12px 22px;
  cursor: pointer;
}

.btn:hover {
  background: #6bdbd0;
  text-decoration: none;
}

.form-note {
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 1em;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 0;
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand strong {
  display: block;
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.footer-brand span {
  color: var(--text-faint);
  font-size: 0.85rem;
}

.footer-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-meta {
  display: flex;
  gap: 18px;
  align-items: center;
  color: var(--text-faint);
  font-size: 0.85rem;
  flex-wrap: wrap;
}

/* ---------- Page header (non-home) ---------- */

.page-hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
}

.page-hero p {
  max-width: 62ch;
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* ---------- Note / post content ---------- */

.note-content {
  max-width: 68ch;
}

.note-content h2 { margin-top: 1.8em; font-size: 1.25rem; }
.note-content h3 { margin-top: 1.4em; font-size: 1.05rem; color: var(--accent); }
.note-content p { margin: 1em 0; }
.note-content ul, .note-content ol { padding-left: 1.3em; }
.note-content li { margin: 0.4em 0; }

.note-content code {
  font-family: var(--font-mono);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-size: 0.9em;
}

.note-content pre {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 14px 16px;
  overflow-x: auto;
}

.note-content pre code {
  border: none;
  background: none;
  padding: 0;
}

.note-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 1em;
}

.note-back {
  display: inline-block;
  margin-top: 2.5em;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* ==========================================================================
   v2 — camada techno-futurista (grain, cursor, partículas, bento, reveal)
   ========================================================================== */

/* ---------- Grain overlay (textura, sempre por cima, não intercepta clique) ---------- */

.grain-overlay {
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
}

/* ---------- Custom cursor (desktop apenas — ver fx.js pra detecção de touch) ---------- */

.itt-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 26px;
  height: 26px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.2s var(--ease-out), height 0.2s var(--ease-out), border-color 0.2s ease, background 0.2s ease;
  mix-blend-mode: difference;
  will-change: transform;
}

.itt-cursor.is-hover {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
}

.itt-cursor.is-down {
  width: 18px;
  height: 18px;
  background: var(--accent);
}

@media (hover: none), (pointer: coarse) {
  .itt-cursor, .grain-overlay { display: none; }
}

/* ---------- Boot intro (splash de terminal, some após digitar) ---------- */

.boot-intro {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.boot-intro.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.boot-intro__line {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2.4vw, 1.15rem);
  color: var(--accent);
  white-space: nowrap;
}

.boot-intro__caret {
  display: inline-block;
  width: 0.55em;
  height: 1.1em;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: itt-blink 0.9s steps(1) infinite;
}

@keyframes itt-blink { 50% { opacity: 0; } }

@media (prefers-reduced-motion: reduce) {
  .boot-intro { display: none; }
}

/* ---------- Hero canvas (rede de partículas triangulando) ---------- */

.hero-canvas-wrap {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.hero-canvas-wrap canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hero-canvas-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 30%, transparent 0%, var(--bg) 92%);
  pointer-events: none;
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.hero .container { position: relative; z-index: 1; }

/* ---------- Kinetic type (reveal por palavra/letra no load) ---------- */

.kinetic-word {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.6em) rotate(2deg);
  animation: itt-kinetic-in 0.9s var(--ease-out) forwards;
}

@keyframes itt-kinetic-in {
  to { opacity: 1; transform: translateY(0) rotate(0deg); }
}

/* ---------- Scroll reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal, .kinetic-word { opacity: 1; transform: none; animation: none; }
}

/* ---------- Bento grid (eixos de pesquisa, stats) ---------- */

.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.bento-cell {
  position: relative;
  grid-column: span 2;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s var(--ease-out);
}

.bento-cell::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--accent-glow), transparent 40%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.bento-cell:hover {
  border-color: var(--accent-dim);
  transform: translateY(-3px);
}

.bento-cell:hover::before { opacity: 1; }

.bento-cell.is-wide { grid-column: span 4; }
.bento-cell.is-tall { grid-row: span 2; }

.bento-cell .card-index {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  margin-bottom: 1em;
  display: block;
}

.bento-cell h3 { margin-bottom: 0.5em; }

.bento-cell p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1em;
}

.bento-glyph {
  position: absolute;
  right: -20px;
  bottom: -20px;
  opacity: 0.08;
  pointer-events: none;
}

/* ---------- Stat strip (fatos honestos, sem métrica inflada) ---------- */

.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}

.stat-cell {
  background: var(--bg-card);
  padding: 28px 20px;
  text-align: center;
}

.stat-cell .stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.stat-cell .stat-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-top: 0.5em;
}

/* ---------- Magnetic buttons ---------- */

.magnetic {
  display: inline-block;
  will-change: transform;
  transition: transform 0.25s var(--ease-out);
}

/* ---------- Glass panel (capture form v2) ---------- */

.glass-panel {
  position: relative;
  background: linear-gradient(160deg, rgba(20, 24, 29, 0.75), rgba(20, 24, 29, 0.5));
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 56px 44px;
  overflow: hidden;
  backdrop-filter: blur(14px);
}

.glass-panel::before {
  content: "";
  position: absolute;
  top: -60%;
  left: -20%;
  width: 70%;
  height: 200%;
  background: radial-gradient(circle, var(--violet-glow) 0%, transparent 70%);
  pointer-events: none;
}

.glass-panel::after {
  content: "";
  position: absolute;
  bottom: -60%;
  right: -20%;
  width: 70%;
  height: 200%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.glass-panel > * { position: relative; z-index: 1; }

/* ---------- Ambient background (páginas internas) ---------- */

.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 50% 40% at 15% 0%, var(--accent-glow) 0%, transparent 60%),
    radial-gradient(ellipse 40% 35% at 100% 20%, var(--violet-glow) 0%, transparent 60%);
}

/* ---------- Section dividers (diagonal, quebra a grade reta) ---------- */

.section-diagonal {
  position: relative;
}

.section-diagonal::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
  .axis-block { grid-template-columns: 1fr; gap: 8px; }
  .pub-layers { grid-template-columns: 1fr; }
  .about-layout { grid-template-columns: 1fr; }
  .avatar-placeholder { max-width: 220px; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento-cell, .bento-cell.is-wide { grid-column: span 2; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .glass-panel { padding: 40px 24px; }
}

@media (max-width: 480px) {
  .bento { grid-template-columns: 1fr; }
  .bento-cell, .bento-cell.is-wide { grid-column: span 1; }
}

@media (max-width: 720px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px;
    gap: 14px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .mobile-menu-toggle { display: inline-block; }
  .header-inner { flex-wrap: wrap; }
}