:root {
  /* Paleta COFISA (azul-marinho + dourado) */
  --navy: #101636;
  --navy-mid: #1a2350;
  --navy-soft: #243066;
  --accent-blue: #c8a44b;
  --accent-green: #e9d38d;
  --accent-gold: #c8a44b;
  --accent-gold-dark: #a3813a;

  /* Superfícies */
  --white-color: #ffffff;
  --white-background: #ffffff;
  --surface-muted: #f7f8fc;
  --surface-alt: #eceef7;
  --paragraph-color: #4e566f;

  /* Marca — CTAs e destaques */
  --primary-color: var(--accent-gold);
  --primary-text: var(--accent-gold);
  --btn-color: var(--accent-gold);
  --btn-hover: var(--accent-gold-dark);
  --btn-text-on-primary: var(--navy);

  /* Hero / slideshow — overlay escuro com dourado da marca */
  --background-color: var(--navy);
  --background-linear-color: linear-gradient(
    115deg,
    rgba(16, 22, 54, 0.96) 0%,
    rgba(26, 35, 80, 0.82) 48%,
    rgba(200, 164, 75, 0.28) 100%
  );
  --background-overlay: linear-gradient(
    120deg,
    rgba(16, 22, 54, 0.9) 0%,
    rgba(200, 164, 75, 0.22) 55%,
    transparent 100%
  );

  /* Seções */
  --background-gallery: linear-gradient(
    165deg,
    var(--navy) 0%,
    var(--navy-mid) 45%,
    #33427e 100%
  );
  --background-contact: linear-gradient(
    165deg,
    var(--surface-muted) 0%,
    var(--white-background) 55%,
    var(--surface-alt) 100%
  );
  --background-second: var(--surface-muted);

  /* Gradientes de acento (ícones, underlines) */
  --gradient-brand: linear-gradient(
    135deg,
    var(--accent-blue) 0%,
    var(--accent-green) 100%
  );
  --gradient-brand-soft: linear-gradient(
    90deg,
    rgba(200, 164, 75, 0.15) 0%,
    rgba(233, 211, 141, 0.16) 100%
  );

  --accent-highlight: var(--accent-blue);

  /* Navegação */
  --menu-header-color: rgba(255, 255, 255, 0.98);
  --menu-header-text: var(--navy);

  /* Elevação e forma */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(16, 22, 54, 0.06);
  --shadow-md: 0 8px 28px rgba(16, 22, 54, 0.1);
  --shadow-glow-gold: 0 4px 24px rgba(200, 164, 75, 0.3);
  --shadow-lg: 0 20px 50px rgba(16, 22, 54, 0.12);
  --shadow-inner-vignette: inset 0 0 100px rgba(16, 22, 54, 0.35);
  --border-hairline: 1px solid rgba(16, 22, 54, 0.08);
  --border-accent-soft: 1px solid rgba(200, 164, 75, 0.2);
  --radius-lg: 20px;
  --section-py: clamp(3.5rem, 6vw, 5.5rem);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Animações — curvas e durações unificadas */
  --ease-reveal: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-nav: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-hero: cubic-bezier(0.2, 0.85, 0.35, 1);
  --dur-reveal: 0.88s;
  --dur-hero: 0.92s;
  --dur-nav: 1s;

  /* Texto principal (títulos) — separado do navy usado em fundos da marca */
  --text-primary: var(--navy);

  /* Tipografia display — serifada clássica da marca COFISA */
  --font-display: "Cinzel", Georgia, "Times New Roman", serif;

  /* Topbar */
  --nav-surface: rgba(255, 255, 255, 0.94);
  --nav-border: rgba(16, 22, 54, 0.06);
  --nav-link: rgba(16, 22, 54, 0.78);
  --nav-link-hover-bg: rgba(200, 164, 75, 0.1);
  --nav-link-hover-text: var(--navy);
  --nav-shadow: 0 4px 24px rgba(16, 22, 54, 0.08);
}

/* Tema escuro — mantém --navy / hero; ajusta superfícies e tipografia */
html[data-theme="dark"] {
  color-scheme: dark;
}

[data-theme="dark"] {
  --text-primary: #f2eee0;
  --paragraph-color: #bcc3d8;

  --white-background: #182048;
  --surface-muted: #101636;
  --surface-alt: #141b3f;

  --menu-header-text: #f2eee0;

  --background-contact: linear-gradient(
    165deg,
    var(--surface-muted) 0%,
    var(--surface-alt) 52%,
    #111737 100%
  );
  --background-second: var(--surface-alt);

  --border-hairline: 1px solid rgba(255, 255, 255, 0.08);
  --border-accent-soft: 1px solid rgba(200, 164, 75, 0.28);

  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 32px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 22px 56px rgba(0, 0, 0, 0.55);
  --shadow-glow-gold: 0 4px 24px rgba(200, 164, 75, 0.2);

  --gradient-brand-soft: linear-gradient(
    90deg,
    rgba(200, 164, 75, 0.22) 0%,
    rgba(233, 211, 141, 0.16) 100%
  );

  --nav-surface: rgba(15, 20, 48, 0.94);
  --nav-border: rgba(255, 255, 255, 0.08);
  --nav-link: rgba(242, 238, 224, 0.82);
  --nav-link-hover-bg: rgba(200, 164, 75, 0.16);
  --nav-link-hover-text: #fff5e6;
  --nav-shadow: 0 4px 28px rgba(0, 0, 0, 0.45);
}

/* Reveals de seção (scroll) */
@keyframes revealUpFade {
  from {
    opacity: 0;
    transform: translate3d(0, 48px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes revealFromLeft {
  from {
    opacity: 0;
    transform: translate3d(-52px, 0, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes revealFromRight {
  from {
    opacity: 0;
    transform: translate3d(52px, 0, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

/* Hero / slideshow — entrada mais legível */
@keyframes heroSlideInRight {
  from {
    opacity: 0;
    transform: translate3d(72px, 36px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes heroSlideInLeft {
  from {
    opacity: 0;
    transform: translate3d(-56px, 28px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}