/* ============================================
   INSTITUTO OPERA — LANDING PAGE
   style.css
   ============================================ */

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

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

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  color: var(--off-white);
  background-color: var(--azul-noite);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease;
}

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* --- VARIÁVEIS --- */
:root {
  /* Cores */
  --azul-noite: #06071B;
  --marinho: #11162A;
  --off-white: #E7E7E8;
  --cinza-quente: #F2EFEA;
  --dourado: #D3B06B;
  --bronze: #8F734B;
  --ardosia: #9196A1;

  /* Tipografia */
  --font-heading: 'Playfair Display', 'Georgia', serif;
  --font-body: 'Inter', -apple-system, 'Segoe UI', Roboto, sans-serif;

  /* Espaçamentos */
  --section-pad: 120px 0;
  --container: 1200px;

  /* Transições */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* --- TIPOGRAFIA --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); }

p {
  font-size: 1rem;
  line-height: 1.8;
  font-weight: 400;
  letter-spacing: 0.005em;
}

em {
  font-style: italic;
  color: var(--dourado);
}

.secao-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dourado);
  margin-bottom: 20px;
}

.secao-label-light {
  color: var(--dourado);
}

.secao-titulo {
  color: var(--off-white);
  margin-bottom: 24px;
}

/* --- BOTÕES --- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 16px 36px;
  border-radius: 2px;
  transition: all 0.35s var(--ease);
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background-color: var(--dourado);
  color: var(--azul-noite);
  border: 1px solid var(--dourado);
}

.btn-primary:hover {
  background-color: var(--bronze);
  border-color: var(--bronze);
  color: var(--cinza-quente);
}

.btn-secondary {
  background-color: transparent;
  color: var(--off-white);
  border: 1px solid rgba(231, 231, 232, 0.3);
}

.btn-secondary:hover {
  border-color: var(--dourado);
  color: var(--dourado);
}

.btn-secondary-light {
  border-color: rgba(231, 231, 232, 0.4);
}

.btn-secondary-light:hover {
  border-color: var(--dourado);
  color: var(--dourado);
}

.btn-mentoria {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dourado);
  border: 1px solid rgba(211, 176, 107, 0.3);
  padding: 12px 28px;
  border-radius: 2px;
  transition: all 0.35s var(--ease);
  margin-top: auto;
}

.btn-mentoria:hover {
  background-color: var(--dourado);
  color: var(--azul-noite);
  border-color: var(--dourado);
}

/* --- HEADER --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 48px;
  transition: background-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.site-header.scrolled {
  background-color: rgba(6, 7, 27, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(211, 176, 107, 0.08);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.logo-img {
  height: 100px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
}

.nav-desktop ul {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-desktop a {
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ardosia);
  transition: color 0.3s var(--ease);
}

.nav-desktop a:hover {
  color: var(--off-white);
}

.btn-header {
  padding: 12px 28px;
  font-size: 0.75rem;
  background-color: var(--dourado);
  color: var(--azul-noite);
  border: 1px solid var(--dourado);
  font-weight: 700;
  letter-spacing: 0.1em;
}

.btn-header:hover {
  background-color: var(--bronze);
  border-color: var(--bronze);
  color: var(--cinza-quente);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--off-white);
  transition: all 0.3s var(--ease);
  transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.nav-mobile {
  display: none;
  position: absolute;
  top: 80px;
  left: 0;
  width: 100%;
  background-color: rgba(6, 7, 27, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 32px 48px 40px;
  border-top: 1px solid rgba(211, 176, 107, 0.1);
}

.nav-mobile.open {
  display: block;
}

.nav-mobile ul {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.nav-mobile a {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  color: var(--off-white);
  letter-spacing: 0.04em;
}

.btn-mobile-cta {
  margin-top: 12px;
  display: inline-block;
}

/* Reveal state is attached by JS so content stays visible if JS is disabled. */
.reveal-ready {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* --- HERO --- */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  max-width: var(--container);
  margin: 0 auto;
  padding: 160px 24px 100px;
  min-height: 100vh;
}

.hero-tag {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--dourado);
  margin-bottom: 28px;
}

.hero-titulo {
  color: var(--cinza-quente);
  margin-bottom: 28px;
  font-weight: 600;
}

.hero-subtitulo {
  color: var(--ardosia);
  font-size: 1.05rem;
  max-width: 520px;
  margin-bottom: 44px;
  line-height: 1.85;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.hero-img-wrapper {
  position: relative;
  width: 100%;
  max-width: 520px;
  aspect-ratio: 4 / 5;
  z-index: 2;
  overflow: hidden;
  border: 1px solid rgba(211, 176, 107, 0.12);
  background-color: var(--marinho);
}

.hero-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.94) contrast(1.02);
}

.hero-accent {
  position: absolute;
  right: -20px;
  bottom: -20px;
  width: 200px;
  height: 200px;
  border: 1px solid rgba(211, 176, 107, 0.1);
  z-index: 1;
}

/* --- QUEM SOMOS --- */
.quem-somos {
  padding: var(--section-pad);
  background-color: var(--marinho);
}

.qs-grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 80px;
  align-items: center;
}

.qs-visual {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(211, 176, 107, 0.1);
  background-color: var(--marinho);
}

.qs-img {
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 4;
  display: block;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.92) contrast(1.02);
}

.qs-visual-detalhe {
  position: absolute;
  top: -16px;
  left: -16px;
  width: 120px;
  height: 120px;
  border-left: 1px solid rgba(211, 176, 107, 0.15);
  border-top: 1px solid rgba(211, 176, 107, 0.15);
}

.qs-conteudo .secao-titulo {
  color: var(--cinza-quente);
}

.qs-texto {
  color: var(--ardosia);
  margin-bottom: 20px;
  max-width: 560px;
  font-size: 1rem;
  line-height: 1.85;
}

.qs-texto:last-of-type {
  margin-bottom: 36px;
}

.qs-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- MENTORIAS --- */
.mentorias {
  padding: var(--section-pad);
  background-color: var(--azul-noite);
}

.mentorias-header {
  max-width: 960px;
  margin: 0 auto 64px;
  padding: 0 24px;
  text-align: center;
}

.mentorias-header .secao-titulo {
  color: var(--cinza-quente);
}

.mentorias-intro {
  color: var(--ardosia);
  margin-top: 8px;
  font-size: 1.02rem;
  line-height: 1.8;
}

.mentorias-grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.mentoria-card {
  background-color: rgba(17, 22, 42, 0.45);
  border: 1px solid rgba(211, 176, 107, 0.07);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.4s var(--ease), transform 0.4s var(--ease);
}

.mentoria-card:hover {
  border-color: rgba(211, 176, 107, 0.22);
  transform: translateY(-3px);
}

.mentoria-card:hover .mentoria-card-banner {
  filter: brightness(1.08);
}

.mentoria-card-banner {
  position: relative;
  height: 200px;
  background: linear-gradient(135deg, var(--marinho) 0%, rgba(211, 176, 107, 0.15) 50%, var(--azul-noite) 100%);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  padding: 20px 28px;
  overflow: hidden;
  transition: filter 0.4s var(--ease);
}

.mentoria-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6, 7, 27, 0.7) 0%, transparent 60%);
}

.mentoria-card-banner .mentoria-tag {
  position: relative;
  z-index: 1;
  margin-bottom: 0;
}

.mentoria-card-inner {
  padding: 32px 28px 36px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.mentoria-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dourado);
  margin-bottom: 16px;
  padding: 5px 14px;
  border: 1px solid rgba(211, 176, 107, 0.2);
  background-color: rgba(6, 7, 27, 0.55);
  align-self: flex-start;
}

.mentoria-card h3 {
  color: var(--cinza-quente);
  font-weight: 600;
  margin-bottom: 16px;
  line-height: 1.3;
}

.mentoria-card p {
  color: var(--ardosia);
  font-size: 0.94rem;
  line-height: 1.8;
  margin-bottom: 24px;
  flex: 1;
}

.mentoria-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  padding-top: 16px;
  border-top: 1px solid rgba(211, 176, 107, 0.06);
}

.mentoria-meta span {
  font-family: var(--font-body);
  font-size: 0.76rem;
  font-weight: 500;
  color: rgba(211, 176, 107, 0.55);
  letter-spacing: 0.03em;
}

/* --- CTA FINAL --- */
.cta-final {
  padding: 140px 24px;
  background: linear-gradient(170deg, var(--marinho) 0%, var(--azul-noite) 60%, rgba(211, 176, 107, 0.04) 100%);
  text-align: center;
  position: relative;
}

.cta-final::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 80px;
  background: linear-gradient(to bottom, transparent, rgba(211, 176, 107, 0.2));
}

.cta-final-inner {
  max-width: 640px;
  margin: 0 auto;
}

.cta-final-titulo {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--cinza-quente);
  margin-bottom: 24px;
}

.cta-final-texto {
  color: var(--ardosia);
  margin-bottom: 44px;
  font-size: 1.05rem;
  line-height: 1.85;
}

.cta-final-botoes {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- FOOTER --- */
.site-footer {
  background-color: var(--azul-noite);
  border-top: 1px solid rgba(211, 176, 107, 0.06);
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 72px 24px 56px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 64px;
}

.footer-logo {
  margin-bottom: 20px;
}

.footer-descricao {
  color: var(--ardosia);
  font-size: 0.9rem;
  line-height: 1.75;
  max-width: 320px;
}

.footer-nav h4,
.footer-contato h4 {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dourado);
  margin-bottom: 20px;
}

.footer-nav ul,
.footer-contato ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-nav a {
  font-size: 0.9rem;
  color: var(--ardosia);
  transition: color 0.3s var(--ease);
}

.footer-nav a:hover {
  color: var(--off-white);
}

.footer-contato li {
  font-size: 0.9rem;
  color: var(--ardosia);
}

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 24px 24px;
  border-top: 1px solid rgba(211, 176, 107, 0.06);
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--ardosia);
  text-align: center;
  letter-spacing: 0.04em;
}

/* ============================================
   MEDIA QUERIES
   ============================================ */

@media (max-width: 1024px) {
  :root {
    --section-pad: 88px 0;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
    padding: 140px 24px 80px;
    min-height: auto;
  }

  .hero-visual {
    order: -1;
    justify-content: center;
  }

  .hero-img-wrapper {
    max-width: 400px;
    aspect-ratio: 16 / 10;
  }

  .hero-accent {
    display: none;
  }

  .hero-content {
    text-align: center;
  }

  .hero-titulo,
  .hero-tag,
  .hero-subtitulo {
    text-align: center;
  }

  .hero-subtitulo {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-ctas {
    justify-content: center;
  }

  .qs-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .qs-visual {
    max-width: 420px;
    margin: 0 auto;
  }

  .qs-texto {
    max-width: none;
  }

  .mentorias-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer-marca {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  :root {
    --section-pad: 72px 0;
  }

  .site-header {
    padding: 0 24px;
  }

  .nav-desktop {
    display: none;
  }

  .btn-header {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-mobile {
    display: block;
    max-height: 0;
    opacity: 0;
    transform: translateY(-10px);
    overflow: hidden;
    pointer-events: none;
    padding: 0 24px;
    transition:
      max-height 0.45s var(--ease),
      opacity 0.35s var(--ease),
      transform 0.35s var(--ease),
      padding 0.35s var(--ease);
  }

  .nav-mobile ul {
    transform: translateY(-6px);
    transition: transform 0.35s var(--ease);
  }

  .nav-mobile.open {
    max-height: 420px;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    padding: 24px 24px 32px;
  }

  .nav-mobile.open ul {
    transform: translateY(0);
  }

  .nav-mobile .btn-mobile-cta {
    display: block;
    width: 100%;
    margin-top: 6px;
    padding: 14px 18px;
    text-align: center;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    border-radius: 4px;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
  }

  .nav-mobile .btn-mobile-cta:hover {
    transform: translateY(-1px);
  }

  .hero {
    padding: 120px 24px 64px;
  }

  .mentorias-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-marca {
    grid-column: span 1;
  }

  .secao-titulo br {
    display: none;
  }

  .cta-final-titulo br {
    display: none;
  }
}

@media (max-width: 480px) {
  :root {
    --section-pad: 56px 0;
  }

  .hero {
    padding: 100px 20px 48px;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

  .hero-ctas .btn {
    width: 100%;
    max-width: 280px;
  }

  .btn {
    padding: 14px 28px;
    font-size: 0.8rem;
  }

  .qs-ctas {
    flex-direction: column;
  }

  .qs-ctas .btn {
    text-align: center;
  }

  .mentoria-card-inner {
    padding: 28px 24px;
  }

  .cta-final {
    padding: 80px 20px;
  }

  .cta-final-botoes {
    flex-direction: column;
    align-items: center;
  }

  .cta-final-botoes .btn {
    width: 100%;
    max-width: 280px;
  }
}