/* =============================================================================
   base.css — Design Tokens e Estilos Base
   =============================================================================
   Projeto: Luminous — Design e Desenvolvimento
   Desenvolvido por valesmr — https://valesmrdev.com
   Todos os direitos reservados © 2026
   ============================================================================= */

/* ---------------------------------------------------------------------------
   CSS Layers
   --------------------------------------------------------------------------- */
@layer reset, base, components, utilities;

/* ---------------------------------------------------------------------------
   Layer: Reset
   --------------------------------------------------------------------------- */
@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

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

  body {
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  img,
  picture,
  video,
  canvas,
  svg {
    display: block;
    max-width: 100%;
  }

  input,
  button,
  textarea,
  select {
    font: inherit;
    color: inherit;
  }

  button {
    cursor: pointer;
    border: none;
    background: none;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  ul,
  ol {
    list-style: none;
  }

  details > summary {
    cursor: pointer;
  }

  details > summary::marker,
  details > summary::-webkit-details-marker {
    display: none;
  }
}

/* ---------------------------------------------------------------------------
   Layer: Base — Design Tokens
   --------------------------------------------------------------------------- */
@layer base {
  :root {
    /* Cores — Paleta Luminous */
    --color-black: #0D0D0D;
    --color-black-soft: #1E1E1E;
    --color-white: #ffffff;
    --color-gray-100: #E8E0D0;
    --color-gray-200: #C5C0A8;
    --color-gray-300: #9E9680;
    --color-gray-400: #5C5C5C;
    --color-gray-500: #3A3A3A;
    --color-gold: #D4C5A0;
    --color-gold-light: #E0D4B8;
    --color-gold-dark: #B8A880;
    --color-taupe: #8B7D6B;
    --color-sienna: #A0522D;

    /* Tokens semânticos */
    --color-surface: var(--color-black);
    --color-surface-alt: var(--color-black-soft);
    --color-text: var(--color-white);
    --color-text-soft: var(--color-gray-200);
    --color-text-muted: var(--color-gray-300);
    --color-accent: var(--color-gold);
    --color-accent-hover: var(--color-gold-light);
    --color-accent-strong: var(--color-sienna);
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(255, 255, 255, 0.12);
    --color-focus: var(--color-gold);

    /* Gradientes */
    --gradient-gold: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
    --gradient-light: radial-gradient(circle, rgba(212, 197, 160, 0.12) 0%, transparent 70%);
    --gradient-overlay: linear-gradient(180deg, transparent 0%, rgba(10, 10, 10, 0.8) 100%);

    /* Tipografia */
    --font-display: 'Newsreader', Georgia, 'Times New Roman', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Escala tipográfica */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3.5rem;
    --text-6xl: 4.5rem;
    --text-7xl: 6rem;
    --text-8xl: 8rem;

    /* Pesos */
    --weight-normal: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;

    /* Espaçamentos (base 8px) */
    --space-4: 0.25rem;
    --space-8: 0.5rem;
    --space-12: 0.75rem;
    --space-16: 1rem;
    --space-24: 1.5rem;
    --space-32: 2rem;
    --space-48: 3rem;
    --space-64: 4rem;
    --space-96: 6rem;
    --space-128: 8rem;
    --space-192: 12rem;
    --space-256: 16rem;

    /* Raios — apenas 2 valores */
    --radius-none: 0;
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-full: 9999px;

    /* Sombras — apenas 2 */
    --shadow-none: none;
    --shadow-glow: 0 0 30px rgba(212, 197, 160, 0.10);
    --shadow-glow-strong: 0 0 40px rgba(160, 82, 45, 0.08);

    /* Transições */
    --easing-spring: cubic-bezier(0.16, 1, 0.3, 1);
    --duration-fast: 200ms;
    --duration-normal: 400ms;
    --duration-slow: 800ms;

    /* Z-index */
    --z-header: 100;
    --z-overlay: 200;
    --z-modal: 300;

    /* Container */
    --container-max: 1200px;
    --container-padding: var(--space-24);

    /* Header height (set by JS) */
    --header-height: 72px;
  }

  /* Tipografia base */
  body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--weight-normal);
    color: var(--color-text);
    background-color: var(--color-surface);
    line-height: 1.9;
  }

  /* Display headings — serifa editorial */
  h1, h2, h3, h4 {
    font-family: var(--font-display);
    line-height: 1.1;
    font-weight: var(--weight-normal);
    color: var(--color-text);
  }

  h1 { font-size: var(--text-7xl); }
  h2 { font-size: var(--text-5xl); }
  h3 { font-size: var(--text-3xl); }
  h4 { font-size: var(--text-2xl); }

  p {
    margin-bottom: var(--space-24);
    color: var(--color-text-soft);
  }

  /* Texto destacado (gold) */
  .text-accent {
    color: var(--color-accent);
  }

  /* Foco visível */
  :focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
  }

  /* Seleção */
  ::selection {
    background-color: var(--color-gold);
    color: var(--color-black);
  }

  /* Scrollbar */
  ::-webkit-scrollbar {
    width: 6px;
  }

  ::-webkit-scrollbar-track {
    background: var(--color-black);
  }

  ::-webkit-scrollbar-thumb {
    background: var(--color-gray-500);
    border-radius: var(--radius-full);
  }

  ::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-400);
  }

  /* Reduced motion */
  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }

  @media (max-width: 768px) {
    h1 { font-size: var(--text-5xl); }
    h2 { font-size: var(--text-4xl); }
    h3 { font-size: var(--text-2xl); }
  }

  @media (max-width: 480px) {
    h1 { font-size: var(--text-4xl); }
    h2 { font-size: var(--text-3xl); }
  }
}

/* ---------------------------------------------------------------------------
   Layer: Utilities
   --------------------------------------------------------------------------- */
@layer utilities {
  .container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
  }

  .section {
    border-top: 1px solid rgba(212, 197, 160, 0.12);
    padding-block: var(--space-256);
  }

  .section--compact {
    border-top: 1px solid rgba(212, 197, 160, 0.12);
    padding-block: var(--space-192);
  }

  .section__label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-accent);
    margin-bottom: var(--space-16);
    display: block;
  }

  .section__title {
    margin-bottom: var(--space-16);
    max-width: 800px;
  }

  .section__title::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background: var(--color-accent);
    margin-top: var(--space-12);
    opacity: 0.5;
  }

  .section__subtitle {
    color: var(--color-text-soft);
    max-width: 560px;
    font-size: var(--text-lg);
    margin-bottom: var(--space-64);
  }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
  }

  .skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-16);
    z-index: calc(var(--z-header) + 10);
    padding: var(--space-8) var(--space-16);
    background: var(--color-gold);
    color: var(--color-black);
    border-radius: var(--radius-none);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    transition: top var(--duration-fast);
  }

  .skip-link:focus {
    top: var(--space-16);
  }

  /* Botões — systema limpo */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    padding: 0.75rem 1.75rem;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    border-radius: var(--radius-none);
    transition: all var(--duration-fast) var(--easing-spring);
    text-align: center;
    min-height: 44px;
    letter-spacing: 0.02em;
  }

  .btn--primary {
    background: var(--color-gold);
    color: var(--color-black);
    border: 1px solid var(--color-gold);
  }

  .btn--primary:hover {
    background: var(--color-gold-light);
    border-color: var(--color-gold-light);
    transform: translateY(-1px);
  }

  .btn--outline {
    border: 1px solid var(--color-border);
    color: var(--color-text);
    background: transparent;
  }

  .btn--outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
  }

  /* Grid helpers */
  .grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-32);
  }

  .grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-32);
  }

  @media (min-width: 600px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
  }

  @media (min-width: 900px) {
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
  }

  /* Reveal animations */
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--duration-slow) var(--easing-spring),
                transform var(--duration-slow) var(--easing-spring);
  }

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

  .reveal--delay-1 { transition-delay: 100ms; }
  .reveal--delay-2 { transition-delay: 200ms; }
  .reveal--delay-3 { transition-delay: 300ms; }
  .reveal--delay-4 { transition-delay: 400ms; }
}