/* ============================================================
   QUANTO TE CUSTA — style.css
   Fintech-inspired, dark modern, sustainable green palette
   ============================================================ */

/* ============================================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================================ */
:root {
  /* Brand Colors */
  --color-bg:           #0b0f0e;
  --color-surface:      #111816;
  --color-surface-2:    #161d1b;
  --color-surface-3:    #1c2523;
  --color-border:       #1f2c28;
  --color-border-light: #243330;

  --color-green:        #22c55e;
  --color-green-dim:    #16a34a;
  --color-green-glow:   rgba(34, 197, 94, 0.15);
  --color-green-muted:  #134e2a;

  --color-text:         #e8f5f0;
  --color-text-2:       #9ab8ad;
  --color-text-3:       #5e7a70;

  --color-combustao:    #f97316;
  --color-combustao-bg: rgba(249, 115, 22, 0.1);
  --color-eletrico:     #22c55e;
  --color-eletrico-bg:  rgba(34, 197, 94, 0.1);

  --color-white:        #ffffff;
  --color-error:        #f87171;

  /* Typography */
  --font-display: 'Plus Jakarta Sans', sans-serif;
  --font-body:    'Plus Jakarta Sans', sans-serif;
  --font-serif:   'Instrument Serif', serif;

  /* 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;

  /* Borders */
  --radius-sm:  0.5rem;
  --radius-md:  0.875rem;
  --radius-lg:  1.25rem;
  --radius-xl:  1.75rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md:  0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg:  0 8px 32px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px rgba(34, 197, 94, 0.12);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-smooth: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --container-max: 1180px;
  --header-h:      72px;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }
strong { font-weight: 600; }

/* Focus ring — acessibilidade */
:focus-visible {
  outline: 2px solid var(--color-green);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ============================================================
   3. UTILITY — CONTAINER
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

@media (max-width: 640px) {
  .container { padding-inline: var(--space-4); }
}

/* ============================================================
   4. HEADER / NAV
   ============================================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(11, 15, 14, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
  background: rgba(11, 15, 14, 0.97);
  box-shadow: 0 2px 24px rgba(0,0,0,0.5);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-8);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
  transition: opacity var(--transition-fast);
}
.nav__logo:hover { opacity: 0.85; }
.nav__logo-icon {
  display: grid;
  place-items: center;
  width: 32px; height: 32px;
  background: var(--color-green);
  color: #000;
  border-radius: var(--radius-sm);
  font-size: 1rem;
}
.nav__logo-text strong { color: var(--color-green); }

/* Menu */
.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
  justify-content: center;
}

.nav__link {
  padding: var(--space-2) var(--space-3);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}
.nav__link:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

/* Actions */
.nav__actions { display: flex; align-items: center; gap: var(--space-3); }

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}
.nav__hamburger:hover { background: var(--color-surface-2); }
.nav__hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav__hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.active span:nth-child(2) { opacity: 0; }
.nav__hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   5. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius-full);
  border: 1.5px solid transparent;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

/* Ripple effect */
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.06);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.btn:hover::after { opacity: 1; }

.btn--primary {
  background: var(--color-green);
  color: #000;
  border-color: var(--color-green);
  box-shadow: 0 2px 16px rgba(34,197,94,0.25);
}
.btn--primary:hover {
  background: #2dd46a;
  box-shadow: 0 4px 24px rgba(34,197,94,0.4);
  transform: translateY(-1px);
}
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  background: transparent;
  color: var(--color-text-2);
  border-color: var(--color-border-light);
}
.btn--ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-3);
  background: var(--color-surface-2);
}

.btn--outline {
  background: transparent;
  color: var(--color-text-2);
  border-color: var(--color-border-light);
}
.btn--outline:hover {
  color: var(--color-text);
  border-color: var(--color-border);
  background: var(--color-surface-2);
}

.btn--sm  { padding: var(--space-2) var(--space-5); font-size: 0.85rem; }
.btn--lg  { padding: var(--space-3) var(--space-8); font-size: 0.95rem; }
.btn--full { width: 100%; border-radius: var(--radius-md); }

/* ============================================================
   6. SECTION SHARED STYLES
   ============================================================ */
.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-green);
  background: var(--color-green-glow);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid rgba(34,197,94,0.2);
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-2);
  max-width: 600px;
  margin-inline: auto;
  line-height: 1.65;
}

/* ============================================================
   7. HERO
   ============================================================ */
.hero {
  position: relative;
  padding-top: calc(var(--header-h) + var(--space-16));
  padding-bottom: var(--space-24);
  overflow: hidden;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

/* Fundo grid sutil */
.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black, transparent);
}

/* Orbs de luz ambiente */
.hero__orb {
  position: absolute;
  border-radius: var(--radius-full);
  filter: blur(80px);
  pointer-events: none;
}
.hero__orb--1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(34,197,94,0.1), transparent 70%);
  top: -100px; right: -100px;
}
.hero__orb--2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(34,197,94,0.07), transparent 70%);
  bottom: 0; left: -80px;
}

.hero__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-6);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-green);
  background: var(--color-green-glow);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid rgba(34,197,94,0.25);
  animation: fadeInDown 0.6s ease both;
}
.hero__badge-dot {
  width: 7px; height: 7px;
  background: var(--color-green);
  border-radius: var(--radius-full);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.12;
  color: var(--color-text);
  max-width: 820px;
  animation: fadeInUp 0.7s ease 0.1s both;
}
.hero__title em {
  font-style: italic;
  font-weight: 400;
  color: var(--color-text-2);
  font-family: var(--font-serif);
}
.hero__title-highlight {
  color: var(--color-green);
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  position: relative;
}
.hero__title-highlight::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-green), transparent);
  border-radius: 2px;
  opacity: 0.5;
}

.hero__subtitle {
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  color: var(--color-text-2);
  max-width: 580px;
  line-height: 1.7;
  animation: fadeInUp 0.7s ease 0.2s both;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
  animation: fadeInUp 0.7s ease 0.3s both;
}

.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-5) var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  animation: fadeInUp 0.7s ease 0.4s both;
  flex-wrap: wrap;
  justify-content: center;
}

.hero__stat { text-align: center; }
.hero__stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-green);
}
.hero__stat span {
  font-size: 0.8rem;
  color: var(--color-text-3);
  font-weight: 400;
}

.hero__stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

/* ============================================================
   8. SIMULADOR SECTION
   ============================================================ */
.simulator-section {
  padding-block: var(--space-24);
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 50%, var(--color-bg) 100%);
}

.simulator {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: start;
}

/* Painéis */
.simulator__form-panel,
.simulator__results-panel {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
}

.simulator__panel-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

/* ---- FORM GROUPS ---- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-2);
  margin-bottom: var(--space-2);
}

/* Tooltip badge */
.form-tooltip {
  display: inline-grid;
  place-items: center;
  width: 18px; height: 18px;
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  color: var(--color-text-3);
  cursor: help;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.form-tooltip:hover {
  background: var(--color-green-glow);
  border-color: var(--color-green);
  color: var(--color-green);
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--color-surface-3);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), background var(--transition-base), box-shadow var(--transition-base);
  overflow: hidden;
}

.input-wrapper:focus-within {
  border-color: var(--color-green);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px var(--color-green-glow);
}

.input-wrapper.has-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.1);
}

.input-prefix {
  display: flex;
  align-items: center;
  padding: 0 var(--space-3) 0 var(--space-4);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-3);
  pointer-events: none;
  font-family: var(--font-display);
  white-space: nowrap;
  flex-shrink: 0;
  border-right: 1px solid var(--color-border);
  height: 100%;
  min-height: 48px;
  letter-spacing: 0.02em;
}

.form-input {
  flex: 1;
  min-width: 0;
  padding: var(--space-3) var(--space-4);
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 500;
  appearance: textfield;
  -moz-appearance: textfield;
}

/* Remove setas number input */
.form-input::-webkit-outer-spin-button,
.form-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.form-input::placeholder { color: var(--color-text-3); font-weight: 400; }

.form-hint {
  display: block;
  font-size: 0.78rem;
  color: var(--color-text-3);
  margin-top: var(--space-1);
}

.form-error {
  display: block;
  font-size: 0.78rem;
  color: var(--color-error);
  margin-top: var(--space-1);
  min-height: 1em;
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

/* ---- RESULTS ---- */
.results-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-4);
  padding: var(--space-12) var(--space-8);
}
.results-empty__icon {
  font-size: 3rem;
  opacity: 0.25;
  filter: grayscale(0.5);
}
.results-empty__text {
  font-size: 0.9rem;
  color: var(--color-text-3);
  max-width: 280px;
  line-height: 1.6;
}

/* Cards de resultado */
.result-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.result-card {
  padding: var(--space-4);
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.result-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.result-card--combustao  { border-left: 3px solid var(--color-combustao); }
.result-card--eletrico   { border-left: 3px solid var(--color-eletrico); }
.result-card--economia   { border-left: 3px solid var(--color-green); }
.result-card--anual      { border-left: 3px solid rgba(34,197,94,0.5); }
.result-card--cinco-anos { border-left: 3px solid rgba(34,197,94,0.3); }

/* Card destaque ocupa linha inteira */
.result-card--destaque {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(34,197,94,0.08), rgba(34,197,94,0.03));
  border-color: rgba(34,197,94,0.3);
  box-shadow: var(--shadow-glow);
}
.result-card--destaque .result-card__value {
  color: var(--color-green);
  font-size: 2rem;
}

.result-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}
.result-card__icon { font-size: 1.1rem; }
.result-card__label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.result-card__value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: var(--space-1);
}
.result-card__sub {
  font-size: 0.75rem;
  color: var(--color-text-3);
}

/* Barra comparativa */
.result-bar-section {
  margin-bottom: var(--space-5);
}
.result-bar-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}
.result-bar-track {
  background: var(--color-surface-3);
  border-radius: var(--radius-full);
  height: 36px;
  overflow: hidden;
  margin-bottom: var(--space-2);
  position: relative;
}
.result-bar {
  height: 100%;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  padding-inline: var(--space-4);
  transition: width var(--transition-smooth);
  min-width: 80px;
  width: 0%;
}
.result-bar span {
  font-size: 0.75rem;
  font-weight: 700;
  color: #000;
  white-space: nowrap;
}
.result-bar--combustao { background: linear-gradient(90deg, var(--color-combustao), #fb923c); }
.result-bar--eletrico  { background: linear-gradient(90deg, var(--color-eletrico), #4ade80); }

.result-disclaimer {
  font-size: 0.72rem;
  color: var(--color-text-3);
  font-style: italic;
  line-height: 1.5;
}

/* Animação entrada resultado */
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
.result-card { animation: slideInRight 0.4s ease both; }
.result-card:nth-child(2) { animation-delay: 0.05s; }
.result-card:nth-child(3) { animation-delay: 0.1s; }
.result-card:nth-child(4) { animation-delay: 0.15s; }
.result-card:nth-child(5) { animation-delay: 0.2s; }

/* ============================================================
   9. COMO FUNCIONA
   ============================================================ */
.how-section {
  padding-block: var(--space-24);
  position: relative;
}

.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.how-card {
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), border-color var(--transition-base);
}
.how-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-light);
}

.how-card__step {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  color: rgba(34,197,94,0.08);
  line-height: 1;
  margin-bottom: var(--space-4);
  position: absolute;
  top: var(--space-5);
  right: var(--space-6);
}

.how-card__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.how-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-2);
  line-height: 1.65;
  margin-bottom: var(--space-5);
}
.how-card__formula {
  font-family: 'Courier New', monospace;
  font-size: 0.8rem;
  color: var(--color-green);
  background: var(--color-green-glow);
  border: 1px solid rgba(34,197,94,0.15);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  line-height: 1.8;
}

/* ============================================================
   10. BENEFÍCIOS
   ============================================================ */
.benefits-section {
  padding-block: var(--space-24);
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.benefit-card {
  padding: var(--space-6);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}
.benefit-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-light);
  box-shadow: var(--shadow-md);
}

.benefit-card__icon-wrap {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: var(--space-4);
}
.benefit-card__icon-wrap--green   { background: rgba(34,197,94,0.12); }
.benefit-card__icon-wrap--blue    { background: rgba(59,130,246,0.12); }
.benefit-card__icon-wrap--emerald { background: rgba(16,185,129,0.12); }
.benefit-card__icon-wrap--purple  { background: rgba(168,85,247,0.12); }
.benefit-card__icon-wrap--orange  { background: rgba(249,115,22,0.12); }
.benefit-card__icon-wrap--teal    { background: rgba(20,184,166,0.12); }

.benefit-card__title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.benefit-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-2);
  line-height: 1.65;
}

/* ============================================================
   11. FAQ
   ============================================================ */
.faq-section {
  padding-block: var(--space-24);
}

.faq-list {
  max-width: 780px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-base);
}
.faq-item:hover { border-color: var(--color-border-light); }
.faq-item.open  { border-color: rgba(34,197,94,0.25); }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  text-align: left;
  transition: background var(--transition-fast);
}
.faq-question:hover { background: var(--color-surface-2); }

.faq-question h3 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.faq-icon {
  flex-shrink: 0;
  color: var(--color-text-3);
  transition: transform var(--transition-base), color var(--transition-base);
}
.faq-item.open .faq-icon {
  transform: rotate(180deg);
  color: var(--color-green);
}

.faq-answer {
  padding: 0 var(--space-6) var(--space-5);
  animation: fadeInDown 0.25s ease;
}
.faq-answer p {
  font-size: 0.9rem;
  color: var(--color-text-2);
  line-height: 1.7;
}

/* ============================================================
   12. CTA FINAL
   ============================================================ */
.cta-section {
  padding-block: var(--space-20);
  position: relative;
  overflow: hidden;
}
.cta-section__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(34,197,94,0.07), transparent);
}
.cta-section__content {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
}
.cta-section__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-text);
}
.cta-section__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-2);
}
.cta-section__btn { padding: var(--space-4) var(--space-10); font-size: 1rem; }

/* ============================================================
   13. FOOTER
   ============================================================ */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-12);
  padding-block: var(--space-12);
  align-items: start;
}

.footer__brand { display: flex; flex-direction: column; gap: var(--space-4); }
.footer__logo  { font-size: 1.05rem; }

.footer__tagline {
  font-size: 0.875rem;
  color: var(--color-text-3);
  line-height: 1.6;
  max-width: 240px;
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}
.footer__social-link {
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-text-3);
  transition: all var(--transition-base);
}
.footer__social-link:hover {
  color: var(--color-text);
  border-color: var(--color-border-light);
  background: var(--color-surface-3);
}

.footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.footer__col-title {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}
.footer__col ul { display: flex; flex-direction: column; gap: var(--space-2); }
.footer__col a {
  font-size: 0.875rem;
  color: var(--color-text-3);
  transition: color var(--transition-fast);
}
.footer__col a:hover { color: var(--color-text); }

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-5);
}
.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-text-3);
}

/* ============================================================
   14. ANIMATIONS
   ============================================================ */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Intersection Observer utility class */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   15. SCROLLBAR PERSONALIZADA
   ============================================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb {
  background: var(--color-border-light);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--color-text-3); }

/* ============================================================
   16. RESPONSIVE — TABLET (max 1024px)
   ============================================================ */
@media (max-width: 1024px) {

  .how-grid,
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .simulator {
    grid-template-columns: 1fr;
  }

  .simulator__results-panel {
    order: -1; /* resultados aparecem acima no mobile */
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer__nav {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================================
   17. RESPONSIVE — MOBILE (max 768px)
   ============================================================ */
@media (max-width: 768px) {

  :root { --header-h: 64px; }

  /* Nav mobile */
  .nav__menu {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(11,15,14,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-smooth), opacity var(--transition-smooth);
    z-index: 99;
  }
  .nav__menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .nav__link {
    width: 100%;
    padding: var(--space-3) var(--space-6);
    border-radius: 0;
    font-size: 1rem;
  }
  .nav__hamburger { display: flex; }
  .btn--sm { display: none; }

  /* Hero mobile */
  .hero { padding-top: calc(var(--header-h) + var(--space-10)); min-height: auto; }
  .hero__stats { gap: var(--space-4); padding: var(--space-4); }
  .hero__stat-divider { display: none; }
  .hero__stats { flex-direction: column; gap: var(--space-3); }
  .hero__actions { flex-direction: column; width: 100%; max-width: 320px; }

  /* Simulador mobile */
  .simulator__form-panel,
  .simulator__results-panel { padding: var(--space-5); }

  .result-cards { grid-template-columns: 1fr; }
  .result-card--destaque { grid-column: 1; }

  /* Grids mobile */
  .how-grid { grid-template-columns: 1fr; }
  .benefits-grid { grid-template-columns: 1fr; }

  .footer__nav { grid-template-columns: 1fr 1fr; }
  .footer__bottom-inner { flex-direction: column; gap: var(--space-2); text-align: center; }
}

/* ============================================================
   18. RESPONSIVE — SMALL MOBILE (max 480px)
   ============================================================ */
@media (max-width: 480px) {

  .simulator { gap: var(--space-4); }
  .footer__nav { grid-template-columns: 1fr; }

  .section-title { font-size: 1.5rem; }
  .hero__title   { font-size: 1.75rem; }

  .result-card__value { font-size: 1.25rem; }
  .result-card--destaque .result-card__value { font-size: 1.6rem; }
}

/* ============================================================
   19. REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}