/* ─────────────────────────────────────────────
   NewNew · Refinado
   Tokens
   ───────────────────────────────────────────── */

:root {
  /* Cor — escala monocromática, mais ar que antes */
  --ink:        #0a0a0a;
  --ink-soft:   #2c2c2a;
  --tone-2:     #4a4a47;
  --tone-3:     #7a7a76;
  --tone-4:     #a8a8a3;
  --tone-5:     #d6d4ce;
  --rule:       #e2e0d9;
  --rule-soft:  #ececea;
  --bg:         #FAFAF8;
  --on-ink:     rgba(250, 250, 248, 0.65);
  --on-ink-2:   rgba(250, 250, 248, 0.85);

  /* Tipo */
  --serif: 'Libre Baskerville', 'Instrument Serif', Georgia, serif;
  --sans:  'Geist', system-ui, -apple-system, 'Helvetica Neue', sans-serif;

  /* Container — calibrado para todos os tamanhos */
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --maxw:   80rem;

  /* Topbar */
  --topbar-h: clamp(2.75rem, 3.4vw, 3.25rem);
}

*, *::before, *::after {
  margin: 0; padding: 0;
  box-sizing: border-box;
}

html { -webkit-text-size-adjust: 100%; overflow-anchor: none; }

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body { overflow-x: hidden; }

a { color: inherit; text-decoration: none; cursor: pointer; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

::selection { background: var(--ink); color: var(--bg); }

/* ─────────────────────────────────────────────
   Topbar
   ───────────────────────────────────────────── */

#topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--bg);
  z-index: 30;
  opacity: 0;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
}

#topbar.solid { pointer-events: auto; }

#topbar-line {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--rule);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.7s cubic-bezier(.2,.7,.1,1);
}
#topbar-line.visible { transform: scaleX(1); }

#topbar-mark {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  opacity: 0;
  transition: opacity 0.3s ease 0.05s;
}
#topbar.solid #topbar-mark { opacity: 1; }

#topbar-nav {
  display: flex;
  gap: clamp(1rem, 2vw, 2rem);
}

#topbar-nav a {
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--tone-3);
  opacity: 0;
  transition: color 0.2s ease, opacity 0.3s ease;
}
#topbar-nav a:hover, #topbar-nav a:focus-visible { color: var(--ink); }

/* Hambúrguer (mobile) */
#menu-toggle {
  display: none;
  width: 2.25rem;
  height: 2.25rem;
  position: relative;
  opacity: 0;
  transition: opacity 0.3s ease;
  -webkit-tap-highlight-color: transparent;
}
#topbar.solid #menu-toggle { opacity: 1; }
#menu-toggle span {
  position: absolute;
  left: 50%;
  width: 1.1rem;
  height: 1px;
  background: var(--ink);
  transform: translateX(-50%);
  transition: transform 0.35s cubic-bezier(.2,.7,.1,1), opacity 0.2s ease;
}
#menu-toggle span:nth-child(1) { top: calc(50% - 5px); }
#menu-toggle span:nth-child(2) { top: 50%; }
#menu-toggle span:nth-child(3) { top: calc(50% + 5px); }

#menu-toggle[aria-expanded="true"] span:nth-child(1) {
  top: 50%; transform: translateX(-50%) rotate(45deg);
}
#menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
#menu-toggle[aria-expanded="true"] span:nth-child(3) {
  top: 50%; transform: translateX(-50%) rotate(-45deg);
}

/* Painel do menu mobile */
#menu-panel {
  position: fixed;
  top: var(--topbar-h);
  right: 0;
  left: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
  z-index: 29;
  transform: translateY(-12px);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(.2,.7,.1,1), opacity 0.3s ease;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  padding: 1.25rem var(--gutter) 2rem;
  gap: 0.25rem;
}
#menu-panel:not([hidden]) {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
#menu-panel a {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--tone-3);
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--rule-soft);
  transition: color 0.2s ease;
}
#menu-panel a:last-child { border-bottom: 0; }
#menu-panel a:hover { color: var(--ink); }

/* ─────────────────────────────────────────────
   Logo flutuante (animado por JS)
   ───────────────────────────────────────────── */

#logo {
  position: fixed;
  z-index: 40;
  font-family: var(--serif);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: -0.04em;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  pointer-events: none;
  /* color, font-size, top, left, transform: setados por JS */
  color: var(--bg);
}

#tagline {
  position: fixed;
  z-index: 40;
  font-size: clamp(0.78rem, 1.1vw, 0.9rem);
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--on-ink-2);
  pointer-events: none;
  font-weight: 300;
}

/* ─────────────────────────────────────────────
   Hero — bloco preto monolítico
   ───────────────────────────────────────────── */

#hero {
  height: 120vh;
  background: var(--ink);
  position: relative;
}

/* Indicador sutil de scroll */
#hero::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: clamp(2rem, 6vh, 4rem);
  width: 1px;
  height: clamp(28px, 5vh, 56px);
  background: linear-gradient(to bottom, transparent, var(--on-ink));
  transform: translateX(-50%);
  opacity: 0.7;
  animation: scrollHint 2.4s ease-in-out infinite;
}

@keyframes scrollHint {
  0%, 100% { transform: translateX(-50%) scaleY(0.6); opacity: 0.3; }
  50%      { transform: translateX(-50%) scaleY(1);   opacity: 0.8; }
}

/* ─────────────────────────────────────────────
   Conteúdo principal
   ───────────────────────────────────────────── */

#content {
  position: relative;
  background: var(--bg);
}

#content > section {
  position: relative;
  padding: 0 var(--gutter);
}

#content > section:first-child::before { display: none; }

/* Linha de revelação animada */
#content > section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--rule);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 2s linear(0, 0.8 30%, 0.9 43%, 0.95 55%, 0.99 80%, 1);
}
#content > section.line-visible::before { transform: scaleX(1); }

/* ─────────────────────────────────────────────
   Section header (clicável — accordion trigger)
   ───────────────────────────────────────────── */

.section-header {
  display: grid;
  grid-template-columns: minmax(6rem, 1fr) auto auto;
  align-items: center;
  column-gap: clamp(1.5rem, 3vw, 3rem);
  width: 100%;
  padding: clamp(1.75rem, 3vw, 2.75rem) 0;
  text-align: left;
  -webkit-tap-highlight-color: transparent;
}

.section-deco {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(5rem, 11vw, 10rem);
  line-height: 0.78;
  color: var(--rule);
  user-select: none;
  letter-spacing: -0.05em;
  transition: color 0.4s ease;
  display: block;
  overflow: hidden;
  padding-bottom: 0.05em;
}

.section-header:hover .section-deco,
section.open .section-deco { color: var(--tone-5); }

.section-title {
  font-size: clamp(0.72rem, 0.85vw, 0.82rem);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--tone-3);
  justify-self: start;
  white-space: nowrap;
}

.section-title::before {
  content: '·';
  margin-right: 1rem;
  color: var(--tone-4);
}

.section-toggle {
  position: relative;
  width: clamp(1.2rem, 1.6vw, 1.5rem);
  height: clamp(1.2rem, 1.6vw, 1.5rem);
  display: inline-block;
  flex-shrink: 0;
  transition: transform 0.4s cubic-bezier(.2,.7,.1,1);
}

.section-toggle::before,
.section-toggle::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  background: var(--tone-3);
  transition: background 0.2s ease;
}

.section-toggle::before {
  width: 100%;
  height: 1px;
  transform: translate(-50%, -50%);
}

.section-toggle::after {
  width: 1px;
  height: 100%;
  transform: translate(-50%, -50%);
  transition: transform 0.4s cubic-bezier(.2,.7,.1,1), background 0.2s ease;
}

.section-header:hover .section-toggle::before,
.section-header:hover .section-toggle::after { background: var(--ink); }

section.open .section-toggle::after { transform: translate(-50%, -50%) scaleY(0); }

/* ─────────────────────────────────────────────
   Section content (accordion)
   ───────────────────────────────────────────── */

.section-content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.55s cubic-bezier(.2,.7,.1,1);
  overflow: hidden;
}

section.open .section-content { grid-template-rows: 1fr; }

.section-content-inner {
  min-height: 0;
  overflow: hidden;
  padding-bottom: 0;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s ease 0.05s, transform 0.5s ease 0.05s, padding 0.5s ease;
}

section.open .section-content-inner {
  padding-bottom: clamp(3rem, 6vw, 6rem);
  opacity: 1;
  transform: translateY(0);
}

/* ─────────────────────────────────────────────
   Sobre
   ───────────────────────────────────────────── */

.about-text {
  font-size: clamp(0.95rem, 1vw, 1.02rem);
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 58ch;
}

.about-text + .about-text { margin-top: 1rem; }

/* ─────────────────────────────────────────────
   Projetos
   ───────────────────────────────────────────── */

.projects-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.5rem, 5vw, 5rem);
}

.project {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
  column-gap: clamp(2rem, 5vw, 5rem);
  row-gap: 1rem;
  padding-top: clamp(2rem, 4vw, 4rem);
  border-top: 1px solid var(--rule-soft);
}

.project:first-child {
  padding-top: 0;
  border-top: 0;
}

.project-name {
  grid-column: 1;
  font-size: clamp(2rem, 3.6vw, 3.25rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.pn-new {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.pn-suffix {
  font-weight: 400;
  letter-spacing: -0.02em;
}

.project-meta {
  grid-column: 1;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.project-phase {
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--tone-4);
}

.project-phase::before {
  content: '· ';
  margin-right: 0.1em;
}

.project-description {
  grid-column: 2;
  grid-row: 1 / span 2;
  font-size: clamp(0.9rem, 0.95vw, 0.98rem);
  line-height: 1.7;
  color: var(--tone-2);
  max-width: 52ch;
  align-self: end;
  padding-bottom: 0.5rem;
}

/* ─────────────────────────────────────────────
   Contato
   ───────────────────────────────────────────── */

.contact-email {
  display: inline-block;
  max-width: 100%;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  letter-spacing: -0.02em;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 0.2rem;
  word-break: break-word;
  transition: opacity 0.2s ease;
}
.contact-email:hover, .contact-email:focus-visible { opacity: 0.65; }

.contact-note {
  margin-top: clamp(1rem, 1.6vw, 1.5rem);
  font-size: clamp(0.9rem, 0.95vw, 0.98rem);
  line-height: 1.7;
  color: var(--tone-2);
  max-width: 48ch;
}

/* ─────────────────────────────────────────────
   Footer
   ───────────────────────────────────────────── */

#footer {
  background: var(--ink);
  color: var(--bg);
  padding: clamp(3rem, 7vw, 6rem) var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-mark {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.25rem, 1.8vw, 1.6rem);
  letter-spacing: -0.02em;
}

.footer-meta {
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--on-ink);
}

/* ─────────────────────────────────────────────
   Responsivo — breakpoints orgânicos
   ───────────────────────────────────────────── */

@media (max-width: 880px) {
  .section-header {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "deco deco"
      "title toggle";
    row-gap: clamp(1rem, 3vw, 2rem);
    padding: clamp(1.5rem, 5vw, 3rem) 0;
  }
  .section-deco {
    grid-area: deco;
    font-size: clamp(7rem, 28vw, 18rem);
  }
  .section-title { grid-area: title; }
  .section-toggle { grid-area: toggle; align-self: center; }

  .project {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    padding-top: clamp(2rem, 6vw, 3rem);
  }
  .project-name        { grid-column: 1; }
  .project-meta        { grid-column: 1; }
  .project-description { grid-column: 1; grid-row: auto; align-self: start; padding-bottom: 0; }
}

@media (max-width: 720px) {
  /* Topbar mobile: só mark + hambúrguer */
  #topbar-nav { display: none; }
  #menu-toggle { display: block; }
}

@media (max-width: 540px) {
  .section-deco { font-size: clamp(6rem, 32vw, 12rem); }

  .pn-suffix { display: block; }

  #footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  #hero::after { display: none; }
}