/* =============================================================
   ESTÚDIO AB — Landing Page Styles
   2025
   ============================================================= */

/* --- Google Fonts via HTML link tag --- */

/* =============================================================
   RESET & BASE
   ============================================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Primary Palette */
  --cream:   #EDE5D3;
  --sage:    #B7BAAF;
  --brown:   #453B32;
  --black:   #222223;

  /* Secondary Palette */
  --orange:  #BF4128;
  --amber:   #EEA244;
  --blue:    #4B657E;
  --maroon:  #582D40;
  --olive:   #89993E;
  --crimson: #8A1D33;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Layout */
  --container-max: 1200px;
  --container-pad: clamp(1.5rem, 5vw, 5rem);
  --section-pad:   clamp(5rem, 10vw, 9rem);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--black);
  color: var(--cream);
  line-height: 1.65;
  overflow-x: hidden;
}

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

a {
  color: inherit;
}

/* Scroll margin so fixed header doesn't overlap sections */
section[id] {
  scroll-margin-top: 80px;
}

/* =============================================================
   LAYOUT UTILITIES
   ============================================================= */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* =============================================================
   TYPOGRAPHY TOKENS
   ============================================================= */
.label-mono {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sage);
  display: block;
  margin-bottom: 1rem;
}

.label-dark {
  color: var(--brown);
}

.heading-xl {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 0.92;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--cream);
  margin-bottom: 2rem;
}

.heading-dark {
  color: var(--black);
}

/* =============================================================
   FADE-IN ANIMATION (Intersection Observer)
   ============================================================= */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity  0.75s var(--ease-out),
    transform 0.75s var(--ease-out);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger service cards */
.servicos-grid .fade-in:nth-child(2),
.servicos-grid .fade-in:nth-child(4) {
  transition-delay: 0.12s;
}

.servicos-grid .fade-in:nth-child(3) {
  transition-delay: 0.06s;
}

/* =============================================================
   HEADER / NAV
   ============================================================= */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding-block: 1.4rem;
  transition:
    background    0.4s ease,
    padding-block 0.4s ease,
    box-shadow    0.4s ease;
}

.header.scrolled {
  background: rgba(34, 34, 35, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding-block: 1rem;
  box-shadow: 0 1px 0 rgba(183, 186, 175, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-img {
  height: 28px;
  width: auto;
  /* Ensure light logo on dark header */
  filter: brightness(0) invert(1);
}

.logo-text-fallback {
  display: none;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cream);
}

/* Nav links */
.nav-links {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sage);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--cream);
}

/* Hamburger toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 2px;
  z-index: 10;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background-color: var(--cream);
  transition: transform 0.3s, opacity 0.3s;
  transform-origin: center;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(34, 34, 35, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(183, 186, 175, 0.08);
    padding-block: 0.75rem;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li a {
    display: block;
    padding: 0.85rem 2rem;
    font-size: 0.75rem;
  }
}

/* =============================================================
   HERO
   ============================================================= */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Animated gradient blobs
   border-radius: 50% + filter: blur() = edges always dissolve to transparent,
   never showing a hard rectangle boundary regardless of transform. */
.hero-bg {
  position: absolute;
  inset: 0;
  background-color: var(--black);
  overflow: hidden; /* clips blobs that extend beyond viewport */
}

.hero-layer {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  will-change: transform;
}

.hero-l1 {
  width: 70%;
  height: 70%;
  background: var(--maroon);
  top: -20%;
  left: -10%;
  opacity: 0.8;
  animation: blob1 22s ease-in-out infinite alternate;
}

.hero-l2 {
  width: 60%;
  height: 60%;
  background: var(--orange);
  top: -18%;
  right: -8%;
  opacity: 0.6;
  animation: blob2 28s ease-in-out infinite alternate;
}

.hero-l3 {
  width: 75%;
  height: 75%;
  background: var(--olive);
  bottom: -28%;
  right: -12%;
  opacity: 0.55;
  animation: blob3 24s ease-in-out infinite alternate;
}

.hero-l4 {
  width: 60%;
  height: 60%;
  background: var(--blue);
  bottom: -18%;
  left: -8%;
  opacity: 0.65;
  animation: blob4 30s ease-in-out infinite alternate;
}

@keyframes blob1 {
  0%   { transform: translate(0,    0)    scale(1);    }
  33%  { transform: translate(10%,  8%)   scale(1.1);  }
  66%  { transform: translate(18%,  14%)  scale(0.96); }
  100% { transform: translate(6%,   22%)  scale(1.07); }
}

@keyframes blob2 {
  0%   { transform: translate(0,    0)    scale(1);    }
  33%  { transform: translate(-9%,  14%)  scale(1.1);  }
  66%  { transform: translate(-17%, 7%)   scale(0.93); }
  100% { transform: translate(-7%,  22%)  scale(1.05); }
}

@keyframes blob3 {
  0%   { transform: translate(0,    0)    scale(1);    }
  33%  { transform: translate(-11%, -9%)  scale(1.08); }
  66%  { transform: translate(-5%,  -17%) scale(0.97); }
  100% { transform: translate(-14%, -7%)  scale(1.1);  }
}

@keyframes blob4 {
  0%   { transform: translate(0,    0)    scale(1);    }
  33%  { transform: translate(13%,  -7%)  scale(1.11); }
  66%  { transform: translate(7%,   -15%) scale(0.95); }
  100% { transform: translate(17%,  -4%)  scale(1.06); }
}

/* Grain texture overlay */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23noise)' opacity='0.06'/%3E%3C/svg%3E");
  background-size: 300px 300px;
  pointer-events: none;
  opacity: 0.45;
  mix-blend-mode: overlay;
}

/* Hero content */
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding-top: 5rem;
}

/* Hero logo */
.hero-logo-wrap {
  margin-bottom: 2.5rem;
}

.logo-hero-img {
  height: clamp(56px, 10vw, 100px);
  width: auto;
  margin-inline: auto;
  filter: brightness(0) saturate(100%) invert(94%) sepia(8%) saturate(300%) hue-rotate(10deg) brightness(103%);
}

.logo-hero-text {
  display: none;
  align-items: baseline;
  justify-content: center;
  gap: 0.4rem;
}

.lht-studio {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(1.6rem, 4.5vw, 3.2rem);
  letter-spacing: 0.3em;
  color: var(--cream);
  text-transform: uppercase;
}

.lht-ab {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.6rem, 4.5vw, 3.2rem);
  letter-spacing: 0.08em;
  color: var(--cream);
  text-transform: uppercase;
}

/* Hero tagline */
.hero-tagline {
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 1.8vw, 1rem);
  color: rgba(183, 186, 175, 0.9);
  letter-spacing: 0.04em;
  line-height: 1.8;
  margin-bottom: 3rem;
}

/* CTA button */
.btn-outline {
  display: inline-block;
  padding: 0.9rem 2.4rem;
  border: 1px solid rgba(237, 229, 211, 0.5);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.btn-outline:hover {
  background: var(--cream);
  border-color: var(--cream);
  color: var(--black);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  justify-content: center;
  z-index: 2;
}

.scroll-line {
  display: block;
  width: 1px;
  height: 56px;
  background: linear-gradient(to bottom, transparent 0%, rgba(183, 186, 175, 0.6) 100%);
  animation: scrollPulse 2.4s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%   { opacity: 0.2; transform: scaleY(0.4); transform-origin: top; }
  60%  { opacity: 1;   transform: scaleY(1);   transform-origin: top; }
  100% { opacity: 0.2; transform: scaleY(0.4); transform-origin: top; }
}

/* =============================================================
   SOBRE
   ============================================================= */
.sobre {
  background-color: var(--black);
  padding-block: var(--section-pad);
  border-top: 1px solid rgba(183, 186, 175, 0.1);
}

/* Each sub-section block */
.sobre-bloco {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem 5rem;
  align-items: start;
  padding-block: 1rem;
}

/* Label spans full width above the two-col layout */
.sobre-bloco > .label-mono {
  grid-column: 1 / -1;
  margin-bottom: 0;
}

.sobre-bloco .heading-xl {
  color: var(--cream);
  margin-bottom: 0; /* heading is its own column */
}

/* Text column */
.sobre-text-col p {
  font-size: 0.95rem;
  color: var(--sage);
  line-height: 1.9;
  margin-bottom: 1.25rem;
}

.sobre-text-col p:last-of-type {
  margin-bottom: 0;
}

.sobre-text-col strong {
  color: var(--cream);
  font-weight: 500;
}

/* Divider between the two bloco sections */
.sobre-sep {
  height: 1px;
  background: rgba(183, 186, 175, 0.1);
  margin-block: clamp(3rem, 6vw, 5rem);
}

/* Reference card */
.ref-card {
  margin-top: 2.5rem;
  padding: 1.5rem 1.75rem;
  border-left: 2px solid var(--orange);
  background: rgba(191, 65, 40, 0.06);
}

.ref-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange);
  display: block;
  margin-bottom: 0.75rem;
}

.ref-body {
  font-size: 0.88rem;
  color: var(--sage);
  line-height: 1.75;
  margin: 0;
}

.ref-body strong {
  color: var(--cream);
  font-weight: 500;
}

@media (max-width: 860px) {
  .sobre-bloco {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* =============================================================
   SERVIÇOS
   ============================================================= */
.servicos {
  background-color: var(--cream);
  padding-block: var(--section-pad);
}

.section-header {
  margin-bottom: 3.5rem;
}

.servicos-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5px;
  background-color: rgba(69, 59, 50, 0.1);
  outline: 1.5px solid rgba(69, 59, 50, 0.1);
}

.servico-card {
  background-color: var(--cream);
  padding: 2.75rem 2.5rem;
  position: relative;
  transition:
    background-color 0.35s ease;
}

/* Icon */
.servico-icon {
  width: 36px;
  height: 36px;
  color: var(--brown);
  margin-bottom: 1.5rem;
  transition: color 0.35s ease;
}

.servico-icon svg {
  width: 100%;
  height: 100%;
}

/* Card heading */
.servico-card h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--black);
  line-height: 1.4;
  margin-bottom: 1rem;
  transition: color 0.35s ease;
}

/* Card body */
.servico-card p {
  font-size: 0.88rem;
  color: var(--brown);
  line-height: 1.8;
  transition: color 0.35s ease;
}

/* ── HOVER: full solid fill ────────────────────────────────── */

/* Orange — cream text (contrast 5.3:1 ✓) */
.servico-card[data-accent="orange"]:hover {
  background-color: var(--orange);
}
.servico-card[data-accent="orange"]:hover .servico-icon,
.servico-card[data-accent="orange"]:hover h3,
.servico-card[data-accent="orange"]:hover p {
  color: var(--cream);
}

/* Blue — cream text (contrast 5.6:1 ✓) */
.servico-card[data-accent="blue"]:hover {
  background-color: var(--blue);
}
.servico-card[data-accent="blue"]:hover .servico-icon,
.servico-card[data-accent="blue"]:hover h3,
.servico-card[data-accent="blue"]:hover p {
  color: var(--cream);
}

/* Olive — dark text (olive is light: contrast 6.5:1 ✓ with black) */
.servico-card[data-accent="olive"]:hover {
  background-color: var(--olive);
}
.servico-card[data-accent="olive"]:hover .servico-icon,
.servico-card[data-accent="olive"]:hover h3,
.servico-card[data-accent="olive"]:hover p {
  color: var(--black);
}

/* Maroon — cream text (contrast 10.9:1 ✓) */
.servico-card[data-accent="maroon"]:hover {
  background-color: var(--maroon);
}
.servico-card[data-accent="maroon"]:hover .servico-icon,
.servico-card[data-accent="maroon"]:hover h3,
.servico-card[data-accent="maroon"]:hover p {
  color: var(--cream);
}

@media (max-width: 640px) {
  .servicos-grid {
    grid-template-columns: 1fr;
  }
}

/* =============================================================
   CONTATO
   ============================================================= */
.contato {
  background-color: var(--brown);
  padding-block: var(--section-pad);
}

.contato .label-mono {
  color: var(--sage);
}

.contato .heading-xl {
  color: var(--cream);
}

.contato-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

/* Pessoa */
.contato-pessoa {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.cp-nome {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--cream);
  text-transform: uppercase;
}

.cp-cargo {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: 0.75rem;
}

.cp-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--cream);
  text-decoration: none;
  transition: color 0.2s;
}

.cp-link:hover {
  color: var(--amber);
}

/* Social / info items */
.contato-social {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.social-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  text-decoration: none;
}

.si-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sage);
}

.si-value {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 1rem;
  color: var(--cream);
  transition: color 0.2s;
}

a.social-item:hover .si-value {
  color: var(--amber);
}

@media (max-width: 640px) {
  .contato-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

/* =============================================================
   FOOTER
   ============================================================= */
.footer {
  background-color: var(--black);
  border-top: 1px solid rgba(183, 186, 175, 0.08);
  padding-block: 1.75rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
}

.footer-inner span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: rgba(183, 186, 175, 0.5);
}

@media (max-width: 540px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}