/* ==========================================================================
   BRIVÉN Design System — Padrão Executivo de Estúdio
   Cores Oficiais (Canva):
   - Creme (Laranja claro): #e9dbc1
   - Roxo Escuro:           #190d24
   - Ciano/Verde Escuro:    #0a2b29
   Tipografia: Outfit (Headings) + Plus Jakarta Sans (Body) + Arima (Logo)
   ========================================================================== */

:root {
  /* Cores Oficiais da Marca */
  --briven-roxo: #190d24;
  --briven-verde: #0a2b29;
  --briven-creme: #e9dbc1;
  --briven-creme-soft: #f4ecdf;
  --briven-creme-muted: #cfc1a5;
  
  /* Lilás Nobre (Dentro da família do Roxo para Contraste & Elegância) */
  --briven-lilas: #735384;
  --briven-lilas-light: #c8b6d6;

  /* Modo Claro (Clean, Luminoso, Constraste Absoluto) */
  --bg-page: #faf7f2;
  --bg-surface: #ffffff;
  --bg-surface-tint: #f2ebd9;
  --bg-surface-card: #fdfbf7;
  --bg-nav: rgba(250, 247, 242, 0.95);

  --text-primary: #190d24;         /* Roxo escuro nos títulos e textos */
  --text-accent: #0a2b29;          /* Verde escuro da paleta */
  --text-eyebrow: #684878;         /* Lilás profundo nos subtítulos para contraste perfeito */
  --text-muted: #2f2038;
  --text-light: #523e60;

  --border-subtle: rgba(25, 13, 36, 0.12);
  --border-hover: rgba(25, 13, 36, 0.25);
  --border-accent: rgba(10, 43, 41, 0.3);

  --btn-primary-bg: #190d24;
  --btn-primary-text: #e9dbc1;
  --btn-secondary-bg: transparent;
  --btn-secondary-text: #190d24;
  --btn-secondary-border: #190d24;

  /* Geometria e Formas Arredondadas */
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --radius-pill: 9999px;
  --radius-arch: 180px 180px 28px 28px;

  --shadow-sm: 0 4px 16px rgba(25, 13, 36, 0.05);
  --shadow-md: 0 12px 36px rgba(25, 13, 36, 0.09);
  --shadow-lg: 0 24px 60px rgba(25, 13, 36, 0.14);

  --transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Modo Escuro (Obsidian Berinjela Profundo com Tipografia Creme & Lilás) */
[data-theme="dark"] {
  --bg-page: #100717;          /* Obsidian profundo */
  --bg-surface: #190d24;       /* O Roxo Oficial do Canva */
  --bg-surface-tint: #231333;
  --bg-surface-card: #200f30;
  --bg-nav: rgba(16, 7, 23, 0.9);

  --text-primary: #e9dbc1;      /* O Creme oficial é o texto principal */
  --text-accent: #c8b6d6;       /* Lilás suave elegante e nítido */
  --text-eyebrow: #c8b6d6;      /* Lilás suave nos subtítulos = CONTRASTE TOTAL E ELEGANTE */
  --text-muted: #cfc1a5;
  --text-light: #9d8e74;

  --border-subtle: rgba(233, 219, 193, 0.12);
  --border-hover: rgba(233, 219, 193, 0.28);
  --border-accent: rgba(200, 182, 214, 0.35);

  --btn-primary-bg: #e9dbc1;
  --btn-primary-text: #190d24;
  --btn-secondary-bg: rgba(233, 219, 193, 0.08);
  --btn-secondary-text: #e9dbc1;
  --btn-secondary-border: rgba(233, 219, 193, 0.4);

  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 12px 36px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.65);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color 0.35s ease, color 0.35s ease;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .font-heading {
  font-family: 'Outfit', sans-serif;
  letter-spacing: -0.015em;
  font-weight: 700;
  line-height: 1.2;
}

.font-logo {
  font-family: 'Arima', cursive, serif;
  letter-spacing: 0.18em;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Tags de Seção Arredondadas (Inspiradas no Portfólio) */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Outfit', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  background: var(--bg-surface-tint);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  margin-bottom: 20px;
}

.section-tag.verde {
  background: rgba(10, 43, 41, 0.15);
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.25);
}

[data-theme="dark"] .section-tag.verde {
  background: rgba(10, 43, 41, 0.6);
  color: #34d399;
}

/* Botões Pílula Refinados */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 30px;
  font-family: 'Outfit', sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  filter: brightness(1.05);
}

.btn-secondary {
  background-color: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  border: 1.5px solid var(--btn-secondary-border);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  background-color: rgba(10, 43, 41, 0.08);
  border-color: var(--text-accent);
}

[data-theme="dark"] .btn-secondary:hover {
  background-color: rgba(233, 219, 193, 0.18);
  border-color: var(--briven-creme);
}

/* Tipografia do Hero com Serifa Editorial Nobre */
/* Subtítulo / Eyebrow nos Cards com Lilás Suave e Contraste Nobre */
.card-eyebrow {
  font-family: 'Outfit', sans-serif;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--text-eyebrow);
  margin-bottom: 20px;
  display: block;
}

.hero-headline {
  font-size: clamp(2.4rem, 5.5vw, 4.4rem);
  line-height: 1.15;
}

.hero-serif-title {
  font-family: 'Playfair Display', Georgia, 'Times New Roman', serif;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text-primary);
}

.highlight-accent {
  font-family: 'Playfair Display', Georgia, 'Times New Roman', serif;
  color: var(--text-accent);
  font-style: italic;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.btn-sm {
  padding: 10px 22px;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

/* Navbar Flutuante em Pílula */
.navbar-wrapper {
  position: fixed;
  top: 20px;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 20px;
}

.navbar {
  max-width: 1140px;
  margin: 0 auto;
  background: var(--bg-nav);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo-icon {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-family: 'Outfit', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
}

.nav-links a:hover {
  color: var(--text-primary);
}

/* Alternância Dinâmica das Logos por Tema */
.logo-white { display: none; }
.logo-dark  { display: block; }

[data-theme="dark"] .logo-white { display: block; }
[data-theme="dark"] .logo-dark  { display: none; }

/* Moldura Fotográfica em Arco Clássico (Evelin & Douglas) */
.arch-frame {
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-arch);
  overflow: hidden;
  background: var(--bg-surface-tint);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-subtle);
  margin-bottom: 24px;
}

.arch-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.arch-frame:hover img {
  transform: scale(1.04);
}

/* Cards Suaves Arredondados */
.card-executive {
  background: var(--bg-surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: var(--transition);
}

.card-executive:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(16, 7, 23, 0.8);
  backdrop-filter: blur(10px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  max-width: 540px;
  width: 100%;
  padding: 40px;
  position: relative;
  box-shadow: var(--shadow-lg);
}