/* ==========================================================================
   FINANCASINTELIGENTES.COM.BR - Design System & Modern CSS Core
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@500;600;700;800&display=swap');

:root {
  /* Dynamic Light Theme Defaults */
  --bg-primary: #0F172A;
  --bg-secondary: #1E293B;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-hover: rgba(51, 65, 85, 0.8);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-color-glow: rgba(16, 185, 129, 0.3);
  
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-inverse: #0F172A;

  /* Brand Color Tokens */
  --primary: #10B981;        /* Emerald Green - Wealth & Growth */
  --primary-hover: #059669;
  --primary-glow: rgba(16, 185, 129, 0.25);
  
  --secondary: #3B82F6;      /* Trust Blue */
  --secondary-hover: #2563EB;
  
  --accent: #F59E0B;         /* Gold / Star Rating */
  --accent-glow: rgba(245, 158, 11, 0.25);

  --danger: #EF4444;
  
  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Effects */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 8px 16px rgba(0,0,0,0.25);
  --shadow-lg: 0 16px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 20px rgba(16, 185, 129, 0.2);
  
  --glass-bg: rgba(30, 41, 59, 0.65);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-backdrop: blur(12px);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Override */
[data-theme="light"] {
  --bg-primary: #F8FAFC;
  --bg-secondary: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F1F5F9;
  --border-color: #E2E8F0;
  --border-color-glow: rgba(16, 185, 129, 0.4);

  --text-main: #0F172A;
  --text-muted: #475569; /* Ajustado para WCAG AA > 4.5:1 */
  --text-inverse: #FFFFFF;

  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 32px rgba(15, 23, 42, 0.12);
}

/* Mobile Menu Overlay & Scroll Lock */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

[data-theme="light"] .nav-overlay {
  background-color: rgba(15, 23, 42, 0.45);
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

body.no-scroll {
  overflow: hidden !important;
  touch-action: none;
}

/* Reset & Basic Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* Utility Containers */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

h1 { font-size: clamp(2.2rem, 4vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); }
h4 { font-size: 1.2rem; }

p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.gradient-text {
  background: linear-gradient(135deg, #10B981 0%, #3B82F6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Header & Navbar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition-normal);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 1.3rem;
  box-shadow: var(--shadow-glow);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  padding: 0.5rem 0;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle-btn:hover {
  transform: scale(1.05);
  border-color: var(--primary);
}

/* Footer Section */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
  margin-top: 5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
}

.footer-col h5 {
  color: var(--text-main);
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

.affiliate-disclaimer {
  background: rgba(16, 185, 129, 0.05);
  border: 1px dashed var(--primary);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 2.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
}