/* ============================================
   RASA ENGENHARIA — Sistema de Design
   Premium futurista + glassmorphism
   ============================================ */

:root {
  /* Tipografia */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'Inter', system-ui, -apple-system, sans-serif;

  /* Paleta — cinzas claros e quentes (sem preto) */
  --color-ink: #2a2d32;
  --color-ink-2: #3a3e44;
  --color-graphite: #4a4f56;
  --color-slate: #6b7178;
  --color-slate-2: #9ea5ad;
  --color-line: #d4d8dc;
  --color-mist: #e1e5e8;
  --color-paper: #f4f5f7;
  --color-deep: #5a6168;
  --color-white: #ffffff;

  /* Marca */
  --color-rasa-red: #b03c2a;
  --color-rasa-red-2: #c44a36;

  /* Acentos */
  --color-accent: var(--color-rasa-red);

  /* Layout */
  --max-w: 1440px;
  --gutter: clamp(20px, 4vw, 64px);
  --radius-sm: 6px;
  --radius: 14px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  /* Transições */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

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

html, body {
  font-family: var(--font-sans);
  font-feature-settings: "ss01", "cv11";
  background: var(--color-paper);
  color: var(--color-ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }

/* ============================================
   Tipografia escala
   ============================================ */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-slate);
}

.display {
  font-size: clamp(48px, 7.5vw, 112px);
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-weight: 500;
  text-wrap: balance;
}

.h1 {
  font-size: clamp(40px, 5.2vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-weight: 500;
  text-wrap: balance;
}

.h2 {
  font-size: clamp(32px, 3.6vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 500;
  text-wrap: balance;
}

.h3 {
  font-size: clamp(22px, 1.8vw, 28px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 500;
}

.body-lg { font-size: 18px; line-height: 1.55; color: var(--color-graphite); }
.body { font-size: 15px; line-height: 1.6; color: var(--color-graphite); }
.caption { font-size: 13px; color: var(--color-slate); }

.text-red { color: var(--color-rasa-red); }
.italic-serif { font-style: italic; font-family: 'Instrument Serif', Georgia, serif; font-weight: 400; }

/* ============================================
   Layout helpers
   ============================================ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

section { position: relative; }

/* ============================================
   Header Glass
   ============================================ */
.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: 1320px;
  z-index: 100;
  padding: 12px 18px 12px 22px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 1px 0 rgba(255,255,255,0.6) inset, 0 8px 30px rgba(10,10,12,0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  transition: background 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.site-header .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 48px;
}
.site-header .logo img { height: 48px; width: auto; }

body:not([data-page="home"]) .site-header {
  background: rgba(244, 245, 247, 0.75);
  border-color: rgba(244, 245, 247, 0.6);
  box-shadow: 0 1px 0 rgba(255,255,255,0.4) inset, 0 8px 24px rgba(10,10,12,0.04);
}

.nav-list {
  display: flex;
  gap: 4px;
  list-style: none;
  position: relative;
  background: rgba(10, 10, 12, 0.04);
  border-radius: 999px;
  padding: 4px;
}

.nav-list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-size: 13.5px;
  letter-spacing: -0.005em;
  padding: 8px 16px;
  border-radius: 999px;
  color: var(--color-graphite);
  transition: color 0.25s var(--ease-out);
  z-index: 2;
}

.nav-list .nav-pill {
  position: absolute;
  top: 4px;
  bottom: 4px;
  background: var(--color-ink);
  border-radius: 999px;
  z-index: 1;
  transition: left 0.4s var(--ease-out), width 0.4s var(--ease-out);
  pointer-events: none;
}

.nav-list a.active { color: white; }
.nav-list a:not(.active):hover { color: var(--color-rasa-red); }

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  padding: 9px 16px 9px 18px;
  background: var(--color-ink);
  color: white;
  border-radius: 999px;
  transition: background 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.header-cta:hover { background: var(--color-rasa-red); transform: translateY(-1px); }
.header-cta .arrow {
  width: 14px; height: 14px;
  transition: transform 0.3s var(--ease-out);
}
.header-cta:hover .arrow { transform: translate(2px, -2px); }

/* Mobile menu toggle (hidden on desktop) */
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: rgba(10,10,12,0.04);
  border: 1px solid rgba(10,10,12,0.08);
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.25s var(--ease-out);
}
.menu-toggle:hover { background: rgba(10,10,12,0.08); }
.menu-toggle span {
  position: absolute;
  left: 11px;
  width: 18px;
  height: 1.5px;
  background: var(--color-ink);
  border-radius: 1px;
  transition: transform 0.35s var(--ease-out), top 0.35s var(--ease-out), opacity 0.2s var(--ease-out);
}
.menu-toggle span:nth-child(1) { top: 15px; }
.menu-toggle span:nth-child(2) { top: 23px; }
.menu-toggle.open span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.menu-toggle.open span:nth-child(2) { top: 19px; transform: rotate(-45deg); }

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(244, 245, 247, 0.96);
  backdrop-filter: blur(24px) saturate(1.2);
  -webkit-backdrop-filter: blur(24px) saturate(1.2);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease-out);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 100px 24px 32px;
}
.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu-inner {
  display: flex;
  flex-direction: column;
  flex: 1;
  justify-content: space-between;
  gap: 32px;
}
.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.mobile-nav-list li {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}
.mobile-menu.open .mobile-nav-list li {
  opacity: 1;
  transform: translateY(0);
}
.mobile-menu.open .mobile-nav-list li:nth-child(1) { transition-delay: 0.10s; }
.mobile-menu.open .mobile-nav-list li:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.open .mobile-nav-list li:nth-child(3) { transition-delay: 0.20s; }
.mobile-menu.open .mobile-nav-list li:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu.open .mobile-nav-list li:nth-child(5) { transition-delay: 0.30s; }
.mobile-nav-list a {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(10,10,12,0.08);
  font-size: clamp(28px, 7vw, 40px);
  letter-spacing: -0.025em;
  line-height: 1.1;
  font-weight: 500;
  color: var(--color-ink);
  transition: color 0.25s, padding 0.25s;
}
.mobile-nav-list a span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--color-slate);
  font-weight: 500;
  min-width: 28px;
}
.mobile-nav-list a.active { color: var(--color-rasa-red); }
.mobile-nav-list a.active span { color: var(--color-rasa-red); }
.mobile-nav-list a:hover { padding-left: 8px; }

.mobile-menu-footer {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(10,10,12,0.08);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out) 0.35s, transform 0.6s var(--ease-out) 0.35s;
}
.mobile-menu.open .mobile-menu-footer {
  opacity: 1;
  transform: translateY(0);
}
.mobile-menu-footer .eyebrow {
  display: block;
  margin-bottom: 12px;
}
.mobile-menu-footer a {
  display: block;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-graphite);
  transition: color 0.2s;
}
.mobile-menu-footer a:hover { color: var(--color-rasa-red); }
.mobile-menu-social {
  display: flex;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.mobile-menu-social a { font-size: 12px; }

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px 14px 24px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: all 0.3s var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-ink);
  color: white;
}
.btn-primary:hover {
  background: var(--color-rasa-red);
  transform: translateY(-1px);
  box-shadow: 0 12px 32px rgba(176, 60, 42, 0.25);
}
.btn-ghost {
  background: rgba(10,10,12,0.04);
  color: var(--color-ink);
  border: 1px solid rgba(10,10,12,0.08);
}
.btn-ghost:hover {
  background: white;
  border-color: rgba(10,10,12,0.15);
}
.btn .arrow { width: 14px; height: 14px; transition: transform 0.3s var(--ease-out); }
.btn:hover .arrow { transform: translate(3px, -3px); }

/* ============================================
   Tags
   ============================================ */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(10,10,12,0.06);
  color: var(--color-graphite);
}
.tag.tag-red {
  background: var(--color-rasa-red);
  color: white;
}
.tag.tag-built {
  background: rgba(10,10,12,0.85);
  color: white;
}
.tag::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  display: inline-block;
  opacity: 0.7;
}

/* ============================================
   Glass card
   ============================================ */
.glass {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(20px) saturate(1.1);
  -webkit-backdrop-filter: blur(20px) saturate(1.1);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 1px 0 rgba(255,255,255,0.6) inset;
}

/* ============================================
   Faixa (diagonal stripes) — recurring brand element
   ============================================ */
.stripes {
  background-image: repeating-linear-gradient(
    -55deg,
    var(--color-mist) 0,
    var(--color-mist) 8px,
    transparent 8px,
    transparent 18px
  );
}
.stripes-dark {
  background-image: repeating-linear-gradient(
    -55deg,
    rgba(255,255,255,0.08) 0,
    rgba(255,255,255,0.08) 8px,
    transparent 8px,
    transparent 18px
  );
}
.stripes-red {
  background-image: repeating-linear-gradient(
    -55deg,
    var(--color-rasa-red) 0,
    var(--color-rasa-red) 8px,
    transparent 8px,
    transparent 18px
  );
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: #abafb2;
  color: var(--color-ink);
  padding: 96px 0 32px;
  margin-top: 120px;
  position: relative;
  overflow: hidden;
}
.site-footer .container { position: relative; z-index: 1; }
.footer-stripes-deco {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 340px;
  height: 48px;
  background: url('assets/faixa-cinza.png') right bottom / contain no-repeat;
  opacity: 1;
  filter: brightness(0.72);
  pointer-events: none;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 80px;
  border-bottom: 1px solid rgba(42,45,50,0.12);
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-graphite);
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: var(--color-ink-2); font-size: 14.5px; transition: color 0.25s, transform 0.25s; display: inline-block; }
.footer-col a:hover { color: var(--color-rasa-red); transform: translateY(-4px); }

.footer-bottom {
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--color-graphite);
  text-transform: uppercase;
}

.footer-headline {
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.025em;
  margin-bottom: 32px;
  color: white;
  text-wrap: balance;
}
.footer-headline em {
  font-family: 'Instrument Serif', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  color: var(--color-rasa-red-2);
}
.footer-cta-row {
  display: flex;
  gap: 12px;
  margin-bottom: 80px;
  flex-wrap: wrap;
}
.footer-cta-row .btn-primary { background: white; color: var(--color-ink); }
.footer-cta-row .btn-primary:hover { background: var(--color-rasa-red); color: white; }
.footer-cta-row .btn-ghost { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.12); color: white; }
.footer-cta-row .btn-ghost:hover { background: rgba(255,255,255,0.12); }

/* ============================================
   Page transitions
   ============================================ */
@keyframes pageIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
main { animation: pageIn 0.6s var(--ease-out); }

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger helper */
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }
.reveal[data-delay="5"] { transition-delay: 0.40s; }
.reveal[data-delay="6"] { transition-delay: 0.48s; }

/* ============================================
   Section header
   ============================================ */
.section-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  padding: 96px 0 48px;
  align-items: end;
}
.section-head .label-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}
.section-head .label-row::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-line);
}

/* ============================================
   Page hero (for inner pages)
   ============================================ */
.page-hero {
  padding: 180px 0 80px;
  position: relative;
  overflow: hidden;
}
.page-hero .blueprint {
  position: absolute;
  inset: 0;
  background: url('assets/blueprint-bg.png') no-repeat center / cover;
  opacity: 0.3;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
}
.page-hero-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 32px;
}
.page-hero-meta .dot {
  width: 6px; height: 6px; background: var(--color-rasa-red); border-radius: 50%;
}

/* ============================================
   Project cards (used on home + listing)
   ============================================ */
.project-card {
  display: block;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-ink);
  isolation: isolate;
  transition: transform 0.5s var(--ease-out);
}
.project-card .pc-img {
  aspect-ratio: 4 / 5;
  width: 100%;
  background-size: cover;
  background-position: center;
  background-color: var(--color-ink-2);
  transition: transform 0.8s var(--ease-out);
  filter: saturate(0.95);
}
.project-card:hover .pc-img { transform: scale(1.04); }
.project-card .pc-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 30%,
    rgba(10,10,12,0.1) 55%,
    rgba(10,10,12,0.85) 100%
  );
}
.project-card .pc-content {
  position: absolute;
  inset: auto 0 0 0;
  padding: 28px;
  color: white;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.project-card .pc-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.7;
  display: flex;
  gap: 14px;
}
.project-card .pc-title {
  font-size: 28px;
  letter-spacing: -0.015em;
  line-height: 1.05;
  font-weight: 500;
}
.project-card .pc-arrow {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.25);
  display: grid;
  place-items: center;
  color: white;
  transition: background 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.project-card:hover .pc-arrow {
  background: var(--color-rasa-red);
  border-color: var(--color-rasa-red);
  transform: rotate(-12deg);
}

/* ============================================
   Generic placeholder image (architecture)
   ============================================ */
.ph-arch {
  background:
    linear-gradient(135deg, rgba(10,10,12,0.4) 0%, rgba(90,97,104,0.3) 50%, rgba(225,229,232,0.6) 100%),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.04) 0 2px, transparent 2px 24px),
    var(--color-graphite);
  background-blend-mode: normal;
}

/* ============================================
   Small utilities
   ============================================ */
.divider {
  height: 1px;
  background: var(--color-line);
  margin: 0;
}

.kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-slate);
}

@media (max-width: 880px) {
  .nav-list { display: none; }
  .menu-toggle { display: block; }
  .header-cta span { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; padding-bottom: 48px; }
  .footer-grid .footer-col:first-child { grid-column: 1 / -1; display: flex; justify-content: center; }
  .footer-grid .footer-col:nth-child(3) { order: 3; }
  .footer-grid .footer-col:nth-child(4) { order: 2; }
  .footer-bottom { padding-bottom: 64px; justify-content: center; text-align: center; }
  .footer-stripes-deco { width: 260px; height: 38px; }
  .section-head { grid-template-columns: 1fr; gap: 16px; padding: 64px 0 32px; }
}

.nav-list .nav-flags { display: flex; align-items: center; gap: 8px; margin-left: 12px; padding-left: 14px; border-left: 1px solid rgba(255,255,255,0.18); }
.nav-list .nav-flags .flag { padding: 0; height: 16px; min-height: 0; border-radius: 2px; background: none !important; }
.nav-list .nav-flags .flag::before, .nav-list .nav-flags .flag::after { display: none !important; }
.flag { display: block; line-height: 0; border-radius: 2px; overflow: hidden; opacity: 0.45; transition: opacity 0.25s var(--ease-out), transform 0.25s var(--ease-out); }
.flag svg { display: block; width: 22px; height: 16px; }
.flag:hover { opacity: 1; transform: translateY(-1px); }
.flag.is-current { opacity: 1; }
.mobile-flags { display: flex; gap: 10px; margin-top: 4px; }
.mobile-flags .flag svg { width: 26px; height: 19px; }
.mobile-flags .flag.is-current { opacity: 1; }