/* ============================================================
   DRA. AMANDA FERRAZ — base.css
   Variables, reset, layout global, header, nav, menu, footer
   ============================================================ */

/* ---------- Variables ---------- */
:root {
  --bg-dark:   #0A0A0A;
  --bg-light:  #FAFAF8;
  --bg-navy:   #0e1e37;
  --bg-blush:  #F0E4D8;
  --gold:      #C9A96E;
  --gold-dim:  rgba(201,169,110,0.25);
  --text-dark: #1A1A1A;
  --text-light:#FAFAF8;
  --text-muted:rgba(250,250,248,0.5);
  --font-disp: 'Cormorant Garamond', serif;
  --font-ui:   'DM Sans', sans-serif;
  --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-circ: cubic-bezier(0.85, 0, 0.15, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: auto; }
html::-webkit-scrollbar,
body::-webkit-scrollbar { display: none; }
html, body { scrollbar-width: none; -ms-overflow-style: none; }
body {
  font-family: var(--font-ui);
  font-weight: 300;
  background: var(--bg-dark);
  color: var(--text-light);
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { display: block; width: 100%; height: 100%; object-fit: cover; }
button { background: none; border: none; cursor: pointer; }

/* ---------- Grain ---------- */
.grain-svg {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.6;
}

/* ---------- Overlay close button ---------- */
.overlay-close {
  position: absolute;
  top: 1.8rem;
  right: 3rem;
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  opacity: 0;
  transform: rotate(-45deg);
  transition: opacity 0.4s 0.1s var(--ease-expo), transform 0.5s 0.1s var(--ease-expo);
}
.overlay-menu.open .overlay-close {
  opacity: 1;
  transform: rotate(0deg);
}
.overlay-close span {
  position: absolute;
  width: 22px; height: 1px;
  background: var(--text-light);
  display: block;
  transition: background 0.3s;
}
.overlay-close span:first-child { transform: rotate(45deg); }
.overlay-close span:last-child  { transform: rotate(-45deg); }
.overlay-close:hover span { background: var(--gold); }

/* ---------- Curtain transition ---------- */
.curtain {
  position: fixed;
  inset: 0;
  background: var(--bg-navy);
  z-index: 8000;
  transform: scaleY(0);
  transform-origin: bottom;
  pointer-events: none;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.8rem 3rem;
  mix-blend-mode: normal;
  transition: padding 0.5s var(--ease-expo), background 0.4s ease, backdrop-filter 0.4s ease;
}
.header.scrolled {
  padding: 1.2rem 3rem;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08), 0 8px 32px rgba(0, 0, 0, 0.18);
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-light);
}
.header-logo-svg {
  width: 44px; height: auto;
  color: var(--text-light);
  transition: color 0.4s;
}
.header.light .header-logo-svg { color: var(--text-dark); }

/* Menu button */
.menu-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-light);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: color 0.4s;
}
.header.light .menu-btn { color: var(--text-dark); }
.menu-btn-lines {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 24px;
}
.menu-btn-lines span {
  display: block;
  width: 100%; height: 1px;
  background: currentColor;
  transition: transform 0.4s var(--ease-expo), opacity 0.4s;
}
.menu-btn.open .menu-btn-lines span:first-child { transform: translateY(6px) rotate(45deg); }
.menu-btn.open .menu-btn-lines span:last-child  { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Nav Dots ---------- */
.nav-dots {
  position: fixed;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 400;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  opacity: 0;
  transition: opacity 0.5s;
}
.nav-dots.visible { opacity: 1; }
.nav-dot {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
}
.nav-dot span {
  display: block;
  width: 5px; height: 5px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.4);
  background: transparent;
  transition: background 0.3s, border-color 0.3s, transform 0.3s;
}
.nav-dot.active span {
  background: var(--gold);
  border-color: var(--gold);
  transform: scale(1.4);
}
.nav-dot::before {
  content: attr(data-label);
  font-family: var(--font-ui);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  opacity: 0;
  transform: translateX(4px);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}
.nav-dot:hover::before { opacity: 1; transform: translateX(0); }

/* Nav dots em fundo claro */
.nav-dots.on-light .nav-dot span { border-color: rgba(26,26,26,0.35); }
.nav-dots.on-light .nav-dot.active span { background: var(--gold); border-color: var(--gold); }
.nav-dots.on-light .nav-dot::before { color: rgba(26,26,26,0.7); }

/* ---------- Overlay Menu ---------- */
.overlay-menu {
  position: fixed;
  inset: 0;
  background: var(--bg-navy);
  z-index: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  clip-path: circle(0% at calc(100% - 3rem) 2.5rem);
  transition: clip-path 0.8s var(--ease-expo);
  pointer-events: none;
}
.overlay-menu.open {
  clip-path: circle(150% at calc(100% - 3rem) 2.5rem);
  pointer-events: all;
}
.overlay-menu-inner {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  padding: 2rem;
}
.overlay-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.overlay-link {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
}
.overlay-link-num {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: var(--gold);
  letter-spacing: 0.1em;
  min-width: 2rem;
}
.overlay-link-text {
  font-family: var(--font-disp);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 300;
  color: var(--text-light);
  transform: translateY(110%);
  display: block;
  transition: transform 0.6s var(--ease-expo), color 0.3s;
}
.overlay-menu.open .overlay-link-text { transform: translateY(0); }
.overlay-link:hover .overlay-link-text { color: var(--gold); }
.overlay-link:nth-child(1) .overlay-link-text { transition-delay: 0.05s; }
.overlay-link:nth-child(2) .overlay-link-text { transition-delay: 0.1s; }
.overlay-link:nth-child(3) .overlay-link-text { transition-delay: 0.15s; }
.overlay-link:nth-child(4) .overlay-link-text { transition-delay: 0.2s; }
.overlay-link:nth-child(5) .overlay-link-text { transition-delay: 0.25s; }
.overlay-link:nth-child(6) .overlay-link-text { transition-delay: 0.3s; }

.overlay-footer {
  display: flex;
  gap: 2rem;
}
.overlay-social {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--gold-dim);
  padding-bottom: 2px;
  transition: color 0.3s;
}
.overlay-social:hover { color: var(--gold); }

/* ---------- Shared section styles ---------- */
.section {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

/* Section numeral background */
.section-numeral {
  position: absolute;
  font-family: var(--font-disp);
  font-size: clamp(10rem, 30vw, 30rem);
  font-weight: 300;
  color: rgba(255,255,255,0.04);
  right: -2vw;
  bottom: -5vw;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}
.section-numeral.dark { color: rgba(0,0,0,0.04); }

.section-label {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
}
.section-label.light { color: var(--gold); }

/* Gold divider line */
.gold-line {
  width: 40px; height: 1px;
  background: var(--gold);
  margin: 1.5rem 0;
}

/* Reveal animation helpers */
.reveal-lines .line,
[class*="reveal"] .line {
  overflow: hidden;
  display: block;
}