/* css/style.css */
:root {
  --color-bg-base: #0a0a0a;
  --color-bg-surface: #141414;
  --color-text-primary: #f5f5f5;
  --color-text-muted: #a3a3a3;
  --color-accent: #d4af37; /* Dourado Altitus */
  --color-error: #cf6679;
  --font-sans: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background-color: var(--color-bg-base); color: var(--color-text-primary); line-height: 1.6; -webkit-font-smoothing: antialiased; }

/* Header Global */
.header { position: fixed; top: 0; width: 100%; background-color: rgba(10, 10, 10, 0.95); backdrop-filter: blur(8px); border-bottom: 1px solid rgba(255,255,255,0.05); z-index: 1000; }
.header__container { display: flex; justify-content: space-between; align-items: center; padding: 1.25rem 5%; max-width: 1440px; margin: 0 auto; }
.header__menu { display: flex; gap: 2rem; list-style: none; }
.header__link { color: var(--color-text-primary); text-decoration: none; font-size: 0.875rem; text-transform: uppercase; letter-spacing: 1px; transition: color 0.3s ease; }
.header__link:hover, .header__link[aria-current="page"] { color: var(--color-accent); }

/* Layout Base */
.main-content { padding-top: 80px; min-height: calc(100vh - 100px); }
.section { padding: 6rem 5%; content-visibility: auto; contain-intrinsic-size: 800px; }
.section__container { max-width: 1440px; margin: 0 auto; }
.section__title { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; font-weight: 300; color: var(--color-accent); }
.section__desc { color: var(--color-text-muted); font-size: 1.125rem; max-width: 600px; margin-bottom: 3rem; }

/* Hero Section (Home) */
.hero { position: relative; height: 100vh; min-height: 600px; display: flex; align-items: center; padding: 0 5%; }
.hero__bg { position: absolute; inset: 0; z-index: -1; }
.hero__img { width: 100%; height: 100%; object-fit: cover; }
.hero__bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10,10,10,0.9) 0%, rgba(10,10,10,0.4) 100%); }
.hero__content { position: relative; z-index: 1; max-width: 700px; }
.hero__title { font-size: clamp(2.5rem, 6vw, 5rem); line-height: 1.1; margin-bottom: 1.5rem; font-weight: 300; }

/* Grids (Serviços e Portfólio) */
.grid-layout { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2rem; }
.card { background-color: var(--color-bg-surface); padding: 3rem 2rem; border: 1px solid rgba(255,255,255,0.05); transition: border-color 0.3s ease; }
.card:hover { border-color: var(--color-accent); }
.portfolio-item { position: relative; overflow: hidden; aspect-ratio: 4/5; background: var(--color-bg-surface); }
.portfolio-item__img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.portfolio-item:hover .portfolio-item__img { transform: scale(1.05); }
.portfolio-item__overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.9), transparent); display: flex; flex-direction: column; justify-content: flex-end; padding: 2rem; opacity: 0; transition: opacity 0.3s ease; }
.portfolio-item:hover .portfolio-item__overlay { opacity: 1; }

/* Formulários e Botões */
.btn { display: inline-block; padding: 1rem 2.5rem; font-size: 0.875rem; text-transform: uppercase; letter-spacing: 2px; text-decoration: none; cursor: pointer; border: none; transition: transform 0.3s ease, background-color 0.3s ease; background-color: var(--color-accent); color: var(--color-bg-base); font-weight: 600; }
.btn:hover { transform: translateY(-4px); background-color: #e6c245; }
.form__group { margin-bottom: 1.5rem; display: flex; flex-direction: column; }
.form__label { font-size: 0.875rem; margin-bottom: 0.5rem; color: var(--color-text-muted); }
.form__input { background: transparent; border: none; border-bottom: 1px solid rgba(255,255,255,0.2); color: var(--color-text-primary); padding: 0.75rem 0; font-size: 1rem; transition: border-color 0.3s ease; }
.form__input:focus { outline: none; border-bottom-color: var(--color-accent); }
.form__input:user-invalid { border-bottom-color: var(--color-error); }

/* Footer */
.footer { text-align: center; padding: 3rem 5%; border-top: 1px solid rgba(255,255,255,0.05); color: var(--color-text-muted); font-size: 0.875rem; }