/* ============================================================
   FinanceFácil — Design System & Styles
   Mobile-first | Accessible | Dark Theme + Glassmorphism
   ============================================================ */

/* ── Custom Properties ── */
:root {
  /* Colors */
  --color-bg:           hsl(222, 47%, 7%);
  --color-bg-card:      hsl(222, 40%, 10%);
  --color-bg-glass:     hsl(222, 40%, 12%);
  --color-surface:      hsl(222, 35%, 14%);
  --color-surface-alt:  hsl(222, 30%, 18%);
  --color-border:       hsl(222, 30%, 22%);
  --color-border-glow:  hsl(152, 70%, 40%, 0.35);

  --color-text:         hsl(210, 40%, 95%);
  --color-text-muted:   hsl(210, 20%, 65%);
  --color-text-dim:     hsl(210, 15%, 45%);

  --color-primary:      hsl(152, 70%, 45%);
  --color-primary-dark: hsl(152, 70%, 35%);
  --color-primary-glow: hsl(152, 70%, 45%, 0.25);
  --color-accent:       hsl(250, 80%, 65%);
  --color-accent-warm:  hsl(38, 90%, 60%);
  --color-negative:     hsl(0, 70%, 60%);

  /* Typography */
  --font-body:   'Inter', system-ui, sans-serif;
  --font-heading:'Outfit', 'Inter', system-ui, sans-serif;

  --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:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Radii */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-card: 0 4px 24px hsl(222, 47%, 4%, 0.6);
  --shadow-glow: 0 0 32px var(--color-primary-glow);
  --shadow-focus: 0 0 0 3px hsl(152, 70%, 45%, 0.45);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --container-max: 1280px;
  --nav-height: 4rem;
}

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

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; }
fieldset { border: none; }
legend { font-family: inherit; }

/* ── Accessibility ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 10000;
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: var(--color-bg);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-4); }

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

/* Focus styles */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 640px)  { .container { padding-inline: var(--space-6); } }
@media (min-width: 1024px) { .container { padding-inline: var(--space-8); } }

/* ── Header / Nav ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: hsl(222, 47%, 7%, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
  gap: var(--space-4);
}

@media (min-width: 640px) { .navbar { padding-inline: var(--space-6); } }
@media (min-width: 1024px) { .navbar { padding-inline: var(--space-8); } }

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 800;
  flex-shrink: 0;
}
.logo-icon { font-size: 1.5rem; }
.logo-text { color: var(--color-text); }
.logo-accent { color: var(--color-primary); }

/* Nav Links (desktop) */
.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-1);
}
@media (min-width: 768px) { .nav-links { display: flex; } }

.nav-link {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast), background var(--transition-fast);
}
.nav-link:hover, .nav-link:focus-visible {
  color: var(--color-text);
  background: var(--color-surface-alt);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem; height: 2.5rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  transition: background var(--transition-fast);
}
.menu-toggle:hover { background: var(--color-surface-alt); }
@media (min-width: 768px) { .menu-toggle { display: none; } }

.hamburger {
  position: relative;
  display: block;
  width: 1.25rem; height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: background var(--transition-fast);
}
.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%; height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--transition-base);
}
.hamburger::before { top: -6px; }
.hamburger::after  { bottom: -6px; }

.menu-toggle[aria-expanded="true"] .hamburger { background: transparent; }
.menu-toggle[aria-expanded="true"] .hamburger::before { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .hamburger::after  { transform: translateY(-6px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-slow);
}
.mobile-menu:not([inert]) { max-height: 400px; }
.mobile-menu ul { padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); }

.mobile-nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 500;
  color: var(--color-text);
  transition: background var(--transition-fast);
}
.mobile-nav-link:hover { background: var(--color-surface-alt); }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: min(100dvh, 700px);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: var(--space-24) var(--space-16);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('hero-bg.png');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    hsl(222, 47%, 7%, 0.9) 0%,
    hsl(222, 47%, 7%, 0.5) 50%,
    hsl(152, 70%, 15%, 0.4) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-6);
}

@media (min-width: 640px)  { .hero-content { padding-inline: var(--space-6); } }
@media (min-width: 1024px) { .hero-content { padding-inline: var(--space-8); } }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: hsl(152, 70%, 45%, 0.12);
  border: 1px solid hsl(152, 70%, 45%, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  animation: fadeInDown 0.6s ease both;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-3xl), 6vw, var(--text-5xl));
  font-weight: 900;
  line-height: 1.15;
  color: var(--color-text);
  animation: fadeInDown 0.6s 0.1s ease both;
}

.hero-highlight {
  background: linear-gradient(135deg, var(--color-primary), hsl(180, 70%, 55%));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  max-width: 52ch;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  animation: fadeInDown 0.6s 0.2s ease both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  animation: fadeInDown 0.6s 0.3s ease both;
}

/* Rates Strip */
.rates-strip {
  width: 100%;
  background: hsl(222, 47%, 7%, 0.6);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  overflow-x: auto;
  animation: fadeInDown 0.6s 0.4s ease both;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.rates-strip::-webkit-scrollbar { display: none; }

.rates-inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  white-space: nowrap;
  min-width: max-content;
}

.rate-item {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.rate-label { font-size: var(--text-xs); color: var(--color-text-dim); font-weight: 500; }
.rate-value { font-size: var(--text-sm); font-weight: 700; color: var(--color-text); }
.rate-value.positive { color: var(--color-primary); }
.rate-divider { color: var(--color-border); font-size: var(--text-lg); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: 600;
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), hsl(152, 70%, 38%));
  color: hsl(222, 47%, 7%);
  box-shadow: 0 4px 16px var(--color-primary-glow);
}
.btn-primary:hover, .btn-primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--color-primary-glow);
  filter: brightness(1.1);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  color: var(--color-text);
  border-color: var(--color-border);
  background: transparent;
}
.btn-ghost:hover, .btn-ghost:focus-visible {
  background: var(--color-surface-alt);
  border-color: var(--color-text-muted);
  transform: translateY(-2px);
}

.btn-full { width: 100%; }

/* ── Quick Stats ── */
.quick-stats {
  padding-block: var(--space-10);
  background: var(--color-bg-card);
  border-block: 1px solid var(--color-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}
@media (min-width: 640px)  { .stats-grid { grid-template-columns: repeat(4, 1fr); } }

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-2);
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), border-color var(--transition-base);
}
.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-glow);
}

.stat-icon { font-size: 2rem; }
.stat-number {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ── Section Common ── */
.section-header {
  text-align: center;
  margin-bottom: var(--space-10);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: 800;
  color: var(--color-text);
  max-width: 20ch;
  line-height: 1.2;
}

.section-description {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 55ch;
}

/* ── Tools Section ── */
.tools-section {
  padding-block: var(--space-16) var(--space-20);
}

/* Tab Buttons */
.tool-tabs {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2);
}

.tab-btn {
  flex: 1;
  min-width: fit-content;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.tab-btn:hover { color: var(--color-text); background: var(--color-surface-alt); }
.tab-btn.active, .tab-btn[aria-selected="true"] {
  background: var(--color-primary);
  color: hsl(222, 47%, 7%);
  box-shadow: 0 2px 12px var(--color-primary-glow);
}

/* Tab Panels */
.tab-panel { display: none; }
.tab-panel.active, .tab-panel:not([hidden]) { display: block; }

/* Calculator Grid */
.calculator-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 900px) {
  .calculator-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}

/* Form Area */
.calc-form-area {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.calc-header { display: flex; flex-direction: column; gap: var(--space-3); }
.calc-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
}
.calc-description { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; }

.calc-form { display: flex; flex-direction: column; gap: var(--space-5); }

/* Form Groups */
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.form-hint { font-weight: 400; font-size: var(--text-xs); color: var(--color-text-muted); }

.input-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-input {
  flex: 1;
  min-width: 0;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-base);
  font-weight: 500;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: textfield;
  -moz-appearance: textfield;
}
.form-input::-webkit-inner-spin-button,
.form-input::-webkit-outer-spin-button { -webkit-appearance: none; }
.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
}

.input-prefix, .input-suffix {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

/* Range Slider */
.range-slider {
  flex: 2;
  height: 6px;
  appearance: none;
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  outline: none;
  cursor: pointer;
}
.range-slider::-webkit-slider-thumb {
  appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary-glow);
  cursor: pointer;
  transition: transform var(--transition-fast);
}
.range-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }
.range-slider::-moz-range-thumb {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  border: none;
  cursor: pointer;
}

.range-display { max-width: 70px; text-align: center; }

/* Quick Rate Buttons */
.quick-rates {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-1);
}
.quick-rate-btn {
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}
.quick-rate-btn:hover, .quick-rate-btn:focus-visible {
  background: var(--color-primary-glow);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Radio Group */
.radio-group { display: flex; flex-direction: column; gap: var(--space-3); }
.radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.radio-label:has(input:checked) {
  border-color: var(--color-primary);
  background: hsl(152, 70%, 45%, 0.08);
}
.radio-label input[type="radio"] { display: none; }
.radio-custom {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  position: relative;
  flex-shrink: 0;
  transition: border-color var(--transition-fast);
}
.radio-label:has(input:checked) .radio-custom { border-color: var(--color-primary); }
.radio-label:has(input:checked) .radio-custom::after {
  content: '';
  position: absolute;
  inset: 3px;
  background: var(--color-primary);
  border-radius: 50%;
}

/* Form Fieldset */
.form-fieldset { display: flex; flex-direction: column; gap: var(--space-3); }
.form-legend {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

/* Expense Items */
.expense-list { display: flex; flex-direction: column; gap: var(--space-3); }
.expense-item { display: flex; flex-direction: column; gap: var(--space-2); }
.expense-label { font-size: var(--text-xs); font-weight: 600; color: var(--color-text-muted); }

/* Pulse animation para o Simulador */
@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 0 rgba(46, 204, 113, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(46, 204, 113, 0); }
  100% { box-shadow: 0 0 0 0 rgba(46, 204, 113, 0); }
}

.pulse {
  animation: pulseGlow 2s infinite;
}

/* ── Components: Forms ── */
.calc-results-area {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.result-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.result-card.main-result {
  background: linear-gradient(135deg,
    hsl(152, 70%, 45%, 0.12),
    hsl(250, 80%, 65%, 0.06)
  );
  border-color: hsl(152, 70%, 45%, 0.3);
  text-align: center;
}

.result-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}
.result-value {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl));
  font-weight: 800;
  color: var(--color-primary);
}

.results-breakdown { display: flex; flex-direction: column; gap: var(--space-3); }

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  gap: var(--space-4);
}
.result-item.highlight { border-color: hsl(152, 70%, 45%, 0.3); }

.result-item-label { font-size: var(--text-sm); color: var(--color-text-muted); font-weight: 500; }
.result-item-value { font-weight: 700; font-size: var(--text-base); white-space: nowrap; }
.result-item-value.positive { color: var(--color-primary); }
.result-item-value.negative { color: var(--color-negative); }

/* Bar Chart */
.chart-container { display: flex; flex-direction: column; gap: var(--space-3); }
.chart-legend {
  display: flex;
  gap: var(--space-4);
  font-size: var(--text-xs);
  font-weight: 600;
}
.legend-item { display: flex; align-items: center; gap: var(--space-2); color: var(--color-text-muted); }
.legend-dot {
  width: 10px; height: 10px;
  border-radius: 2px;
}
.legend-item.invested .legend-dot { background: var(--color-accent); }
.legend-item.earned .legend-dot { background: var(--color-primary); }

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 120px;
  padding: var(--space-2);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.chart-bar-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  flex: 1;
  height: 100%;
  gap: 2px;
}

.chart-bar {
  width: 100%;
  border-radius: 3px 3px 0 0;
  transition: height 0.5s ease;
  min-height: 2px;
}
.chart-bar.invested { background: var(--color-accent); }
.chart-bar.earned { background: var(--color-primary); }

.chart-years {
  display: flex;
  gap: 4px;
  padding-inline: var(--space-2);
  font-size: 9px;
  color: var(--color-text-dim);
}
.chart-years span { flex: 1; text-align: center; }

/* Result Tip */
.result-tip {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-4);
  background: hsl(38, 90%, 60%, 0.08);
  border: 1px solid hsl(38, 90%, 60%, 0.2);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Independence Meter */
.independence-meter {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.meter-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}
.meter-track {
  height: 12px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.meter-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  border-radius: var(--radius-full);
  transition: width 1s ease;
}
.meter-labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-dim);
}

/* Comparison Cards */
.comparison-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 480px) {
  .comparison-cards {
    grid-template-columns: 1fr 1fr;
  }
}
.comparison-card {
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}
.comparison-card.highlight { border-color: var(--color-primary); background: hsl(152, 70%, 45%, 0.08); }
.comparison-title { font-size: var(--text-xs); font-weight: 700; color: var(--color-text-muted); margin-bottom: var(--space-2); }
.comparison-value { font-size: var(--text-lg); font-weight: 800; color: var(--color-text); }
.comparison-label { font-size: var(--text-xs); color: var(--color-text-dim); margin-top: var(--space-1); }

/* Purchasing Power */
.purchasing-power { display: flex; flex-direction: column; gap: var(--space-4); }
.power-bar { display: flex; align-items: center; gap: var(--space-3); }
.power-bar-label { font-size: var(--text-xs); font-weight: 600; color: var(--color-text-muted); min-width: 130px; }
.power-bar-track {
  flex: 1;
  height: 12px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.power-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}
.power-bar-fill.today { background: var(--color-accent); }
.power-bar-fill.nominal { background: var(--color-primary); }
.power-bar-fill.real { background: hsl(250, 80%, 65%); }
.power-bar-value { font-size: var(--text-xs); font-weight: 700; min-width: 80px; text-align: right; }

/* Doubling Visual */
.doubling-visual {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.doubling-money {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: var(--space-4);
}
.money-stack { text-align: center; display: flex; flex-direction: column; gap: var(--space-2); }
.money-icon { font-size: 2.5rem; }
.money-label { font-size: var(--text-xs); font-weight: 700; color: var(--color-text-muted); }
.money-value { font-size: var(--text-base); font-weight: 800; color: var(--color-primary); }

.doubling-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
}
.arrow-line { width: 100%; height: 2px; background: var(--color-border); }
.arrow-time { font-size: var(--text-xs); font-weight: 700; color: var(--color-primary); }
.arrow-head { font-size: var(--text-xl); color: var(--color-primary); }

/* Comparativo Table */
.comparativo-section { margin-top: var(--space-6); }
.comparativo-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.comparativo-table { border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; }
.comparativo-head {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-alt);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-muted);
}
.comparativo-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
}
.comparativo-row:hover { background: var(--color-surface); }
.highlight-cell { color: var(--color-primary); font-weight: 700; }

/* Donut Chart */
.donut-chart-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}
@media (min-width: 480px) {
  .donut-chart-wrapper { flex-direction: row; justify-content: center; }
}

.donut-chart {
  width: 160px; height: 160px;
  flex-shrink: 0;
}
.donut-chart svg { width: 100%; height: 100%; }
.donut-center-label {
  font-size: 7px;
  fill: var(--color-text-muted);
  font-family: var(--font-body);
}
.donut-center-value {
  font-size: 8px;
  fill: var(--color-text);
  font-weight: 700;
  font-family: var(--font-body);
}

.donut-legend { display: flex; flex-direction: column; gap: var(--space-3); }
.donut-legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
}
.donut-color {
  width: 14px; height: 14px;
  border-radius: 4px;
  flex-shrink: 0;
}
.donut-color.nec { background: hsl(152, 70%, 45%); }
.donut-color.des { background: hsl(250, 80%, 65%); }
.donut-color.pou { background: hsl(38, 90%, 60%); }
.donut-legend-label { flex: 1; color: var(--color-text-muted); }
.donut-legend-pct { font-weight: 700; color: var(--color-text); }

/* Budget Status */
.budget-status { display: flex; flex-direction: column; gap: var(--space-3); }
.budget-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: var(--text-sm);
  flex-wrap: wrap;
}
.budget-row span[id$="-valor"] {
  word-break: break-all;
  overflow-wrap: break-word;
  max-width: 100%;
}
.budget-status-badge {
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
}
.badge-ok { background: hsl(152, 70%, 45%, 0.15); color: var(--color-primary); }
.badge-over { background: hsl(0, 70%, 60%, 0.15); color: var(--color-negative); }

/* ── Comparador Section ── */
.comparador-section {
  padding-block: var(--space-16) var(--space-20);
  background: var(--color-bg-card);
  border-block: 1px solid var(--color-border);
}

.comparison-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  justify-content: center;
}

.filter-btn {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-surface);
  transition: all var(--transition-fast);
}
.filter-btn:hover, .filter-btn.active, .filter-btn[aria-pressed="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: hsl(222, 47%, 7%);
}

.investments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-5);
}

.investment-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}
.investment-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-glow);
  box-shadow: var(--shadow-glow);
}
.investment-card[hidden] { display: none; }

.inv-header { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-3); }
.inv-icon { font-size: 2.5rem; }
.inv-badge {
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
}
.badge-conservador { background: hsl(152, 70%, 45%, 0.15); color: var(--color-primary); border: 1px solid hsl(152, 70%, 45%, 0.3); }
.badge-moderado { background: hsl(38, 90%, 60%, 0.15); color: var(--color-accent-warm); border: 1px solid hsl(38, 90%, 60%, 0.3); }
.badge-arrojado { background: hsl(0, 70%, 60%, 0.15); color: var(--color-negative); border: 1px solid hsl(0, 70%, 60%, 0.3); }

.inv-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
}
.inv-full-name { font-size: var(--text-xs); color: var(--color-text-dim); margin-top: 2px; }

.inv-rate {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-primary);
}
.inv-rate-label { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: 2px; }

.inv-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.inv-tag {
  padding: 2px 8px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
}

.inv-description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.inv-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}
.inv-metric { display: flex; flex-direction: column; gap: 2px; }
.inv-metric-label { font-size: var(--text-xs); color: var(--color-text-dim); }
.inv-metric-value { font-size: var(--text-sm); font-weight: 700; color: var(--color-text); }

/* ── Learn Section ── */
.learn-section { padding-block: var(--space-16) var(--space-20); }

.learn-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}
@media (min-width: 640px)  { .learn-cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .learn-cards { grid-template-columns: repeat(3, 1fr); } }

.learn-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: transform var(--transition-base), border-color var(--transition-base);
}
.learn-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-glow);
}

.learn-card-icon { font-size: 2.5rem; }
.learn-card-level {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.learn-card[data-level="iniciante"]    .learn-card-level { color: var(--color-primary); }
.learn-card[data-level="intermediario"] .learn-card-level { color: var(--color-accent-warm); }
.learn-card[data-level="avancado"]     .learn-card-level { color: hsl(250, 80%, 65%); }

.learn-card-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}
.learn-card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
}

/* Details / Accordion */
.learn-details { margin-top: auto; }
.learn-summary {
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  padding: var(--space-2) 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  transition: color var(--transition-fast);
}
.learn-summary::after { content: '↓'; transition: transform var(--transition-base); }
.learn-details[open] .learn-summary::after { transform: rotate(180deg); }
.learn-summary::-webkit-details-marker { display: none; }

.learn-content {
  padding-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-2);
}

.learn-content ul { display: flex; flex-direction: column; gap: var(--space-2); padding-left: var(--space-4); list-style: disc; }

.tip-box {
  padding: var(--space-4);
  background: hsl(38, 90%, 60%, 0.08);
  border: 1px solid hsl(38, 90%, 60%, 0.25);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ── Glossário ── */
.glossario-section {
  padding-block: var(--space-16) var(--space-20);
  background: var(--color-bg-card);
  border-block: 1px solid var(--color-border);
}

.glossario-search-wrapper { max-width: 600px; margin: 0 auto var(--space-10); }
.glossario-search {
  width: 100%;
  padding: var(--space-4) var(--space-6);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.glossario-search::placeholder { color: var(--color-text-dim); }
.glossario-search:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
}

.glossario-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 640px)  { .glossario-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .glossario-grid { grid-template-columns: repeat(3, 1fr); } }

.glossario-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: transform var(--transition-base), border-color var(--transition-base);
}
.glossario-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-glow);
}
.glossario-card[hidden] { display: none; }

.glossario-term {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.glossario-definition {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.glossario-example {
  margin-top: var(--space-3);
  padding: var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  border-left: 3px solid var(--color-primary);
}

/* ── Perfil Quiz ── */
.perfil-section { padding-block: var(--space-16) var(--space-20); }

.perfil-card {
  background: linear-gradient(135deg,
    var(--color-bg-card) 0%,
    hsl(222, 40%, 12%) 100%
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  max-width: 800px;
  margin: 0 auto;
}
@media (min-width: 640px) { .perfil-card { padding: var(--space-12) var(--space-10); } }

.perfil-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  text-align: center;
}

.quiz-container { width: 100%; max-width: 600px; }

.quiz-question {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-5);
}
.quiz-q-label {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
}
.quiz-q-text {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}

.quiz-options { display: flex; flex-direction: column; gap: var(--space-3); }
.quiz-option {
  padding: var(--space-4);
  background: var(--color-bg-card);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  text-align: left;
  transition: all var(--transition-fast);
  cursor: pointer;
}
.quiz-option:hover, .quiz-option:focus-visible {
  border-color: var(--color-primary);
  background: hsl(152, 70%, 45%, 0.08);
  transform: translateX(4px);
}
.quiz-option.selected {
  border-color: var(--color-primary);
  background: hsl(152, 70%, 45%, 0.12);
  color: var(--color-primary);
}

.quiz-progress {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}
.quiz-progress-track {
  flex: 1;
  height: 6px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.quiz-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}
.quiz-progress-label {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.quiz-result {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
}
.quiz-result-icon { font-size: 4rem; }
.quiz-result-title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-primary);
}
.quiz-result-desc { font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.7; max-width: 45ch; }

.quiz-restart-btn {
  margin-top: var(--space-2);
}

/* ── Footer ── */
.site-footer {
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-12) var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}
@media (min-width: 640px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }

.footer-brand { display: flex; flex-direction: column; gap: var(--space-4); }
.footer-desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.7; max-width: 38ch; }
.footer-disclaimer {
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  line-height: 1.6;
  padding: var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  max-width: 38ch;
}

.footer-nav { display: flex; flex-direction: column; gap: var(--space-4); }
.footer-heading {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-nav ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.footer-link:hover { color: var(--color-primary); }

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-dim);
}

.developer-link {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}
.developer-link:hover {
  opacity: 0.8;
  text-decoration: underline;
}

/* ── Back to Top ── */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 50;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: hsl(222, 47%, 7%);
  font-size: var(--text-xl);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px var(--color-primary-glow);
  transition: transform var(--transition-base), opacity var(--transition-base);
  opacity: 0;
}
.back-to-top:not([hidden]) { opacity: 1; }
.back-to-top:hover { transform: translateY(-4px); }

/* ── Toast ── */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
  width: min(90%, 400px);
}

.toast {
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  box-shadow: var(--shadow-card);
  animation: slideUp 0.3s ease, fadeOut 0.4s 2.6s ease forwards;
  pointer-events: auto;
}
.toast.success { border-color: var(--color-primary); }
.toast.info { border-color: var(--color-accent); }

/* ── Animations ── */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to   { opacity: 0; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ── Utility ── */
.positive { color: var(--color-primary); }
.negative { color: var(--color-negative); }

/* ── Scroll-driven header shrink ── */
@supports (animation-timeline: scroll()) {
  .site-header {
    animation: headerShrink linear both;
    animation-timeline: scroll();
    animation-range: 0 100px;
  }
  @keyframes headerShrink {
    from { background: hsl(222, 47%, 7%, 0.6); }
    to   { background: hsl(222, 47%, 7%, 0.95); }
  }
}

/* ── Print ── */
@media print {
  .site-header, .back-to-top, .toast-container { display: none; }
  body { background: white; color: black; }
}