:root {
    --ink: #2D1E2A;
    --plum: #462E42;
    --wine: #7A3A3B;
    --wine-soft: #9E5556;
    --bg: #FAFBFC;
    --bg-alt: #F7F5F8;
    --muted: #716476;
    --hair: #C9C2CC;
    --cream: #F7F5F8;
    --cream-muted: #C9C2CC;
    --serif: 'Fraunces', 'Georgia', serif;
    --sans: 'Manrope', system-ui, -apple-system, sans-serif;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
  body {
    font-family: var(--sans);
    font-weight: 400;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.55;
    overflow-x: hidden;
  }

  /* ============ LAYOUT ============ */
  .container { max-width: 1080px; margin: 0 auto; padding: 0 2rem; }
  .container-narrow { max-width: 760px; margin: 0 auto; padding: 0 2rem; }

  section { padding: 6rem 0; position: relative; }
  @media (max-width: 720px) { section { padding: 4rem 0; } }

  .eyebrow {
    font-family: var(--sans);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--wine);
    margin-bottom: 1.25rem;
  }

  h1, h2, h3 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.01em; }
  h1 { font-size: clamp(2.5rem, 6vw, 5rem); line-height: 1.02; }
  h2 { font-size: clamp(1.8rem, 4vw, 3rem); line-height: 1.1; }
  h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); line-height: 1.3; }

  p { font-size: clamp(0.95rem, 1.4vw, 1.05rem); line-height: 1.65; color: var(--plum); }
  p.lead { font-size: clamp(1.1rem, 1.7vw, 1.3rem); color: var(--plum); line-height: 1.5; }

  .accent-bar { display: inline-block; width: 2.5rem; height: 2px; background: var(--wine); margin-bottom: 1.5rem; }
  .v-accent { width: 3px; min-width: 3px; background: var(--wine); flex-shrink: 0; align-self: stretch; }

  /* ============ HERO ============ */
  .hero {
    background: var(--bg-alt);
    color: var(--ink);
    min-height: 92vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
  }
  .hero-inner { position: relative; z-index: 1; width: 100%; }
  .hero-logo { height: 64px; margin-bottom: 2.5rem; }
  @media (min-width: 600px) { .hero-logo { height: 80px; } }
  @media (min-width: 900px) { .hero-logo { height: 96px; } }
  .hero-eyebrow { color: var(--wine); }
  .hero h1 { color: var(--ink); margin-bottom: 1.5rem; }
  .hero h1 em { font-style: italic; color: var(--wine); }
  .hero-sub {
    max-width: 540px;
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    color: var(--plum);
    margin-bottom: 2.5rem;
  }
  .hero-cta-group { display: flex; gap: 1rem; flex-wrap: wrap; }

  .btn-primary {
    background: var(--wine);
    color: var(--cream);
    padding: 1rem 2rem;
    border: none;
    border-radius: 2px;
    font-family: var(--sans);
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.03em;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
  }
  .btn-primary:hover { background: var(--wine-soft); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(122,58,59,0.3); }
  .btn-primary svg { width: 18px; height: 18px; }

  .btn-secondary {
    background: transparent;
    color: var(--ink);
    padding: 1rem 1.5rem;
    border: 1px solid var(--ink);
    border-radius: 2px;
    font-family: var(--sans);
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
  }
  .btn-secondary:hover { background: var(--ink); color: var(--cream); }
  .btn-secondary svg { width: 16px; height: 16px; }

  /* ============ TOPNAV ============ */
  .home-topnav { position: absolute; top: 0; left: 0; right: 0; z-index: 50; }
  .home-topnav-inner { max-width: 1080px; margin: 0 auto; padding: 1.6rem 2rem; display: flex; justify-content: flex-end; gap: 1.8rem; align-items: center; }
  .home-topnav-inner a { font-family: var(--sans); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--wine); transition: opacity .2s; }
  .home-topnav-inner a:hover { opacity: .6; }
  @media (max-width: 600px) { .home-topnav-inner { padding: 1.1rem 1.3rem; gap: 1.2rem; } .home-topnav-inner a { font-size: 0.66rem; letter-spacing: 0.12em; } }
  .portfolio-cta { margin-top: 3.5rem; display: flex; justify-content: center; }
  .portfolio-cta-btn { font-size: 1rem; padding: 1rem 2.1rem; }
  .frente-cta { display: flex; width: fit-content; align-items: center; gap: 0.45rem; margin-top: 1rem; padding: 0.5rem 1.05rem; border: 1px solid var(--hair); border-radius: 50px; font-family: var(--sans); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--wine); transition: background .2s, color .2s, border-color .2s; }
  .frente-cta svg { width: 14px; height: 14px; }
  .frente-cta:hover { background: var(--wine); color: var(--cream); border-color: var(--wine); }

  /* ============ MANIFESTO ============ */
  .manifesto { background: var(--bg); }
  .manifesto-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 4rem; align-items: start; }
  @media (max-width: 720px) { .manifesto-grid { grid-template-columns: 1fr; gap: 1.5rem; } }
  .manifesto h2 em { font-style: italic; color: var(--wine); }
  .pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3.5rem; }
  @media (max-width: 720px) { .pillars { grid-template-columns: 1fr; gap: 1.5rem; } }
  .pillar { display: flex; gap: 1rem; }
  .pillar-content h3 { font-family: var(--serif); font-size: 1.05rem; margin-bottom: 0.4rem; color: var(--ink); }
  .pillar-content p { font-size: 0.9rem; color: var(--muted); line-height: 1.55; }

  /* ============ SOBRE ANNA ============ */
  .sobre { background: var(--bg-alt); }
  .sobre-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 4rem; align-items: center; }
  @media (max-width: 720px) { .sobre-grid { grid-template-columns: 1fr; gap: 2.5rem; } }
  .anna-photo {
    width: 100%;
    max-width: 360px;
    aspect-ratio: 4/5;
    object-fit: cover;
    object-position: center top;
    filter: grayscale(20%);
    transition: filter 0.5s ease;
  }
  .anna-photo:hover { filter: grayscale(0%); }
  .sobre h2 em { font-style: italic; color: var(--wine); }
  .sobre h2 { margin-bottom: 1.25rem; }
  .role {
    font-family: var(--sans);
    font-size: 0.85rem;
    color: var(--wine);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    font-weight: 600;
  }
  .tags { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 2rem; }
  .tag {
    font-size: 0.75rem;
    color: var(--muted);
    border: 1px solid var(--hair);
    padding: 0.4rem 0.85rem;
    border-radius: 50px;
    letter-spacing: 0.05em;
  }

  /* ============ FRENTES ============ */
  .frentes { background: var(--bg); }
  .frentes-header { display: grid; grid-template-columns: 1fr 1.5fr; gap: 4rem; margin-bottom: 4rem; align-items: end; }
  @media (max-width: 720px) { .frentes-header { grid-template-columns: 1fr; gap: 1.5rem; margin-bottom: 2.5rem; } }
  .frentes-list { border-top: 1px solid var(--hair); }
  .frente-item {
    display: grid;
    grid-template-columns: 80px 1fr 2fr;
    gap: 2rem;
    padding: 1.75rem 0;
    border-bottom: 1px solid var(--hair);
    align-items: baseline;
    transition: background 0.3s ease;
  }
  @media (max-width: 720px) {
    .frente-item { grid-template-columns: 50px 1fr; gap: 1rem; padding: 1.5rem 0; }
    .frente-item .frente-desc { grid-column: 2; margin-top: 0.3rem; }
  }
  .frente-item:hover { background: var(--bg-alt); }
  .frente-num {
    font-family: var(--serif);
    font-size: 1.75rem;
    font-style: italic;
    color: var(--wine);
    line-height: 1;
  }
  .frente-title {
    font-family: var(--serif);
    font-size: 1.25rem;
    color: var(--ink);
    line-height: 1.25;
  }
  .frente-desc {
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.55;
  }

  /* ============ CASES ============ */
  .cases { background: var(--ink); color: var(--cream); }
  .cases-header { margin-bottom: 4rem; }
  .cases h2 { color: var(--cream); }
  .cases h2 em { font-style: italic; color: var(--wine-soft); }
  .cases-eyebrow { color: var(--cream-muted); }
  .cases-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
  @media (max-width: 720px) { .cases-grid { grid-template-columns: 1fr; gap: 3rem; } }
  .case-number {
    font-family: var(--serif);
    font-style: italic;
    font-size: clamp(3rem, 6vw, 4.5rem);
    color: var(--wine-soft);
    line-height: 1;
    margin-bottom: 1.5rem;
    font-weight: 500;
  }
  .case-eyebrow {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--wine-soft);
    margin-bottom: 0.75rem;
  }
  .case-title {
    font-family: var(--serif);
    font-size: 1.25rem;
    color: var(--cream);
    margin-bottom: 1rem;
    line-height: 1.3;
  }
  .case-desc {
    font-size: 0.95rem;
    color: var(--cream-muted);
    line-height: 1.65;
    margin-bottom: 1.5rem;
  }
  .case-scope {
    font-size: 0.8rem;
    color: var(--cream-muted);
    font-style: italic;
    padding-top: 1rem;
    border-top: 1px solid rgba(247,245,248,0.15);
    line-height: 1.5;
  }

  /* ============ DIFERENCIAL ============ */
  .diferencial { background: var(--bg-alt); }
  .diferencial-header { max-width: 720px; margin-bottom: 4rem; }
  .diferencial h2 em { font-style: italic; color: var(--wine); }
  .diferencial-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2.5rem 4rem; }
  @media (max-width: 720px) { .diferencial-grid { grid-template-columns: 1fr; gap: 2rem; } }
  .dif-item { display: flex; gap: 1.25rem; }
  .dif-content h3 { font-family: var(--serif); font-size: 1.15rem; margin-bottom: 0.5rem; color: var(--ink); }
  .dif-content p { font-size: 0.92rem; color: var(--muted); line-height: 1.6; }

  /* ============ MASTER CLASSES ============ */
  .mclass { background: var(--bg-alt); }
  .mclass-header { max-width: 760px; margin-bottom: 3.5rem; }
  .mclass-header h2 em { font-style: italic; color: var(--wine); }
  .mclass-header .lead { margin-top: 1.25rem; }
  .mclass-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }
  @media (max-width: 720px) { .mclass-grid { grid-template-columns: 1fr; gap: 2rem; } }
  .mclass-card { border-top: 2px solid var(--wine); padding-top: 1.25rem; }
  .mclass-card h3 { font-family: var(--serif); font-size: 1.15rem; color: var(--ink); margin-bottom: 0.6rem; line-height: 1.3; }
  .mclass-card p { font-size: 0.9rem; color: var(--muted); line-height: 1.6; margin-bottom: 1.1rem; }
  .mclass-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
  .mclass-tags .tag { font-size: 0.72rem; }

  /* ============ CONTATO ============ */
  .contato { background: var(--ink); color: var(--cream); padding: 7rem 0; }
  .contato-inner { display: grid; grid-template-columns: 1.3fr 1fr; gap: 5rem; align-items: center; }
  @media (max-width: 720px) { .contato-inner { grid-template-columns: 1fr; gap: 3rem; } }
  .contato h2 { color: var(--cream); margin-bottom: 1.5rem; }
  .contato h2 em { font-style: italic; color: var(--wine-soft); }
  .contato-lead { color: var(--cream-muted); font-size: 1.05rem; margin-bottom: 2.5rem; max-width: 480px; }
  .contato-cta { display: flex; flex-direction: column; gap: 1rem; }

  .contact-list { display: flex; flex-direction: column; gap: 1.5rem; padding-left: 1.5rem; border-left: 2px solid var(--wine); }
  .contact-item { }
  .contact-label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--wine-soft);
    margin-bottom: 0.4rem;
    display: block;
  }
  .contact-value {
    font-family: var(--sans);
    font-size: 1.05rem;
    color: var(--cream);
    text-decoration: none;
    transition: color 0.2s;
  }
  .contact-value:hover { color: var(--wine-soft); }

  /* ============ FOOTER ============ */
  footer {
    background: var(--ink);
    color: var(--cream-muted);
    padding: 2.5rem 0;
    text-align: center;
    border-top: 1px solid rgba(247,245,248,0.08);
  }
  footer .logo-footer { height: 26px; opacity: 0.85; margin-bottom: 1rem; }
  footer p { color: var(--cream-muted); font-size: 0.8rem; letter-spacing: 0.05em; }
  footer p em { font-family: var(--serif); font-style: italic; }

  /* ============ FLOATING WHATSAPP ============ */
  .float-wa {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--wine);
    color: var(--cream);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 24px rgba(122,58,59,0.4);
    z-index: 100;
    transition: all 0.3s ease;
    text-decoration: none;
  }
  .float-wa:hover { transform: scale(1.08); background: var(--wine-soft); }
  .float-wa svg { width: 28px; height: 28px; }

  /* ============ ANIMATIONS ============ */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }
  /* Progressive enhancement: visible by default, JS will trigger animations */
  html.js-ready .hero-logo,
  html.js-ready .hero-eyebrow,
  html.js-ready .hero h1,
  html.js-ready .hero-sub,
  html.js-ready .hero-cta-group { opacity: 0; }
  html.js-ready .hero-logo { animation: fadeUp 0.8s 0.1s ease-out forwards; }
  html.js-ready .hero-eyebrow { animation: fadeUp 0.8s 0.25s ease-out forwards; }
  html.js-ready .hero h1 { animation: fadeUp 0.9s 0.4s ease-out forwards; }
  html.js-ready .hero-sub { animation: fadeUp 0.9s 0.6s ease-out forwards; }
  html.js-ready .hero-cta-group { animation: fadeUp 0.9s 0.8s ease-out forwards; }
  html.js-ready .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.8s ease, transform 0.8s ease; }
  html.js-ready .reveal.in { opacity: 1; transform: translateY(0); }

  /* ============ Responsive tweaks ============ */
  @media (max-width: 720px) {
    .hero { min-height: 80vh; }
    .hero-cta-group { flex-direction: column; align-items: stretch; }
    .btn-primary, .btn-secondary { justify-content: center; }
  }