/*
 * Tokens de design — Campos Salles Reformas e Construções.
 * Paleta derivada do logo: grafite/preto, branco e dourado, em versão
 * sóbria e plana (o efeito metálico/glow fica restrito à imagem do logo).
 */

:root {
  /* Cores base */
  --color-black: #14161a;
  --color-graphite-900: #1c1f23;
  --color-graphite-700: #33383d;
  --color-graphite-500: #565d64;
  --color-graphite-300: #8a9098;
  --color-graphite-100: #e7e9eb;
  --color-white: #ffffff;

  --color-gold-700: #93711f;
  --color-gold-600: #b0872a;
  --color-gold-500: #c79a3a;
  --color-gold-100: #f4ead0;

  --color-success: #2f7a4f;
  --color-danger: #a8322a;
  --color-danger-bg: #fbeceb;
  --color-focus: #2f6fb0;

  /* Superfícies */
  --surface-page: var(--color-white);
  --surface-elevated: var(--color-white);
  --surface-dark: var(--color-graphite-900);
  --text-primary: var(--color-graphite-900);
  --text-muted: var(--color-graphite-500);
  --text-on-dark: var(--color-white);
  --border-subtle: var(--color-graphite-100);

  /* Tipografia */
  --font-base: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;

  /* Espaçamento */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;

  /* Layout */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(20, 22, 26, 0.08);
  --shadow-md: 0 8px 24px rgba(20, 22, 26, 0.12);
  --max-width: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --surface-page: #121417;
    --surface-elevated: #1a1d21;
    --text-primary: #f2f2f0;
    --text-muted: #a8adb3;
    --border-subtle: #2a2e33;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--surface-page);
  color: var(--text-primary);
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-gold-700);
}

a:hover {
  color: var(--color-gold-600);
}

h1, h2, h3, h4 {
  line-height: 1.25;
  color: var(--text-primary);
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--space-3) var(--space-4);
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  min-height: 44px;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: var(--color-gold-600);
  color: var(--color-black);
}

.btn-primary:hover {
  background: var(--color-gold-700);
  color: var(--color-white);
}

.btn-dark {
  background: var(--color-graphite-900);
  color: var(--color-white);
}

.btn-dark:hover {
  background: var(--color-black);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-graphite-300);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--color-graphite-500);
}

.field {
  margin-bottom: var(--space-4);
}

.field label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-graphite-300);
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  color: var(--text-primary);
  min-height: 44px;
}

.field textarea {
  min-height: 120px;
}

.field .hint {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: var(--space-1);
}

.field .error {
  color: var(--color-danger);
  font-size: 0.875rem;
  margin-top: var(--space-1);
}

.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-4);
  border: 1px solid transparent;
}

.alert-error {
  background: var(--color-danger-bg);
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.alert-success {
  background: #e9f5ee;
  border-color: var(--color-success);
  color: var(--color-success);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@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;
  }
}