/* ============================================================
   SalárioLíquido.app — global.css
   Cobre exatamente as classes do public/index.html (Etapa 1)
   Mobile-first: base 320px → md 768px → lg 1024px
   ADR-002: CSS Variables + CSS Modules
   ADR-012: dark mode via [data-theme="dark"]
   ============================================================ */


/* ============================================================
   1. TOKENS — Light Mode (:root)
   ============================================================ */
:root {
  --color-bg:            #FFFFFF;
  --color-bg-subtle:     #F5F5F5;
  --color-bg-section:    #FAFAFA;
  --color-surface:       #FFFFFF;
  --color-border:        #E5E5E5;

  --color-primary:       #0066FF;
  --color-primary-hover: #0052CC;
  --color-primary-light: #EBF2FF;
  --color-on-primary:    #FFFFFF;

  --color-text:          #111111;
  --color-text-muted:    #6B6B6B;
  --color-text-subtle:   #999999;

  --color-success:       #16A34A;
  --color-danger:        #DC2626;
  --color-warning:       #D97706;

  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'Lora', 'Georgia', 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;

  --font-normal:   400;
  --font-medium:   500;
  --font-semibold: 600;
  --font-bold:     700;

  --leading-tight:   1.25;
  --leading-normal:  1.5;
  --leading-relaxed: 1.75;

  --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;

  --container-max: 1200px;
  --container-pad: var(--space-4);
  --header-height: 56px;

  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);

  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;

  --z-sticky:  200;
  --z-overlay: 300;
  --z-modal:   400;
}


/* ============================================================
   2. TOKENS — Dark Mode
   ============================================================ */
[data-theme="dark"] {
  --color-bg:            #111111;
  --color-bg-subtle:     #1A1A1A;
  --color-bg-section:    #161616;
  --color-surface:       #1E1E1E;
  --color-border:        #2A2A2A;

  --color-primary:       #3B82F6;
  --color-primary-hover: #60A5FA;
  --color-primary-light: #1E3A5F;
  --color-on-primary:    #FFFFFF;

  --color-text:          #F0F0F0;
  --color-text-muted:    #A3A3A3;
  --color-text-subtle:   #666666;

  --color-success:       #4ADE80;
  --color-danger:        #F87171;
  --color-warning:       #FBBF24;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.30);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.40);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.50);
}


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

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

ul, ol {
  list-style: none;
}

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

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

:target {
  scroll-margin-top: calc(var(--header-height) + var(--space-4));
}


/* ============================================================
   4. HEADER
   ============================================================ */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-sticky);
  transition: transform var(--transition-normal);
}

header.header--hidden {
  transform: translateY(-100%);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  font-weight: var(--font-semibold);
  font-size: var(--text-lg);
  min-height: 48px;
  text-decoration: none;
}

.header__logo:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.header__logo-icon {
  font-size: var(--text-xl);
  line-height: 1;
}

.header__logo-text {
  display: flex;
  align-items: baseline;
}

.header__logo-tld {
  color: var(--color-primary);
}

.header__nav {
  display: none;
}

.header__nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.header__nav a {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  transition: color var(--transition-fast);
}

.header__nav a:hover {
  color: var(--color-text);
  text-decoration: none;
}

.header__controls {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.header__theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-md);
  font-size: var(--text-lg);
  transition: background-color var(--transition-fast);
}

.header__theme-toggle:hover {
  background-color: var(--color-bg-subtle);
}

/* Mostra o ícone correto conforme tema */
[data-theme="light"] .theme-toggle__icon--dark,
[data-theme="dark"]  .theme-toggle__icon--light {
  display: none;
}

.header__hamburger {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.header__hamburger:hover {
  background-color: var(--color-bg-subtle);
}

.header__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text-muted);
  border-radius: var(--radius-full);
}

.header__hamburger:hover span {
  background-color: var(--color-text);
}

/* Mobile menu (dropdown simples — drawer via JS na Etapa 4) */
.header__mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3) var(--container-pad);
  z-index: var(--z-overlay);
  box-shadow: var(--shadow-md);
}

.header__mobile-menu.is-open {
  display: block;
}

.header__mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.header__mobile-menu a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding-inline: var(--space-2);
  color: var(--color-text);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.header__mobile-menu a:hover {
  background-color: var(--color-bg-subtle);
  text-decoration: none;
}


/* ============================================================
   5. MAIN
   ============================================================ */
main {
  padding-top: var(--header-height);
}


/* ============================================================
   6. SECTIONS
   ============================================================ */
.section {
  width: 100%;
}

.section__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-8) var(--container-pad);
}

.section__inner--narrow {
  max-width: 720px;
}

.section__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
}


/* ============================================================
   7. AD SLOTS
   ============================================================ */
.ad-wrapper {
  width: 100%;
  text-align: center;
  background-color: var(--color-bg-subtle);
}

.ad-wrapper__label {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-block: var(--space-2);
}

.ad-wrapper--leaderboard {
  display: none;
  min-height: 90px;
  border-bottom: 1px solid var(--color-border);
}

.ad-wrapper--infeed {
  min-height: 120px;
  border-block: 1px solid var(--color-border);
  padding-block: var(--space-4);
}

.ad-wrapper--content-bottom {
  min-height: 280px;
  padding-block: var(--space-4);
  margin-top: var(--space-8);
}

.ad-wrapper--sidebar {
  display: none;
  min-height: 250px;
  margin-top: var(--space-6);
}


/* ============================================================
   8. HERO SECTION
   ============================================================ */
.section--hero {
  background-color: var(--color-bg);
  text-align: center;
}

.section--hero .section__inner {
  padding-block: var(--space-12) var(--space-8);
}

.section--hero h1 {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.hero__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding-inline: var(--space-6);
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-weight: var(--font-semibold);
  font-size: var(--text-base);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
  text-decoration: none;
}

.hero__cta:hover {
  background-color: var(--color-primary-hover);
  color: var(--color-on-primary);
  text-decoration: none;
}


/* ============================================================
   9. CALCULATOR SECTION
   ============================================================ */
.section--calculator {
  background-color: var(--color-bg-section);
}

.calculator__layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.calculator__form-col {
  width: 100%;
}

.calculator__result-col {
  width: 100%;
}


/* ============================================================
   10. FORMULÁRIO
   ============================================================ */
.calculator-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-field__label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
}

.form-field__required {
  color: var(--color-danger);
  margin-left: var(--space-1);
}

.form-field__input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.form-field__prefix {
  position: absolute;
  left: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  pointer-events: none;
  user-select: none;
}

.form-field__input {
  width: 100%;
  height: 48px;
  padding-inline: var(--space-3);
  font-size: var(--text-base);
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-field__input--currency {
  padding-left: calc(var(--space-3) + 1.75rem);
}

.form-field__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-field__input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: var(--color-bg-subtle);
}

.form-field__input--number::-webkit-outer-spin-button,
.form-field__input--number::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

.form-field__input--number {
  -moz-appearance: textfield;
}

.form-field__hint {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  line-height: var(--leading-normal);
}


/* ============================================================
   11. CURRENCY TOGGLE
   ============================================================ */
.currency-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-1);
}

.currency-toggle__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  min-height: 36px;
  padding-inline: var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  font-family: var(--font-sans);
  color: var(--color-text-muted);
  background-color: transparent;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.currency-toggle__btn:hover:not(:disabled) {
  color: var(--color-text);
}

.currency-toggle__btn--active {
  background-color: var(--color-surface);
  color: var(--color-primary);
  font-weight: var(--font-semibold);
  box-shadow: var(--shadow-sm);
}

.currency-toggle__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.currency-toggle__tooltip {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  padding-inline: var(--space-2);
}


/* ============================================================
   12. RESULT PANEL
   ============================================================ */
.result-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.result-panel__title {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.result-panel__list {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
}

.result-item__label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.result-item__value {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.result-item__label--net {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  border-bottom: none;
  border-top: 2px solid var(--color-border);
  padding-top: var(--space-4);
  margin-top: var(--space-1);
}

.result-item__value--net {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-success);
  border-bottom: none;
  border-top: 2px solid var(--color-border);
  padding-top: var(--space-4);
  margin-top: var(--space-1);
}

.result-item--discount {
  color: var(--color-danger);
}

.result-item--deposit {
  color: var(--color-success);
}

.result-item__badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  line-height: 1;
}

.result-item__badge--discount {
  background-color: rgba(220, 38, 38, 0.10);
  color: var(--color-danger);
}

.result-item__badge--deposit {
  background-color: rgba(22, 163, 74, 0.10);
  color: var(--color-success);
}


/* ============================================================
   13. FAQ SECTION
   ============================================================ */
.section--faq {
  background-color: var(--color-bg-section);
}

.faq__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.faq__question {
  display: block;
}

.faq__toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: left;
  min-height: 48px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.faq__toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.faq__toggle[aria-expanded="true"] {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  border-bottom-color: transparent;
}

.faq__toggle-icon {
  font-size: var(--text-xl);
  color: var(--color-text-subtle);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.faq__toggle[aria-expanded="true"] .faq__toggle-icon {
  transform: rotate(45deg);
}

.faq__answer {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: none;
  border-bottom-left-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}

.faq__answer p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}


/* ============================================================
   14. CONTENT SECTION
   ============================================================ */
.section--content {
  background-color: var(--color-bg);
}

.content-article h3 {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  line-height: var(--leading-tight);
}

.content-article h3:first-child {
  margin-top: 0;
}

.content-article p {
  font-family: var(--font-serif);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}


/* ============================================================
   15. FOOTER
   ============================================================ */
footer {
  background-color: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-8);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  text-align: center;
}

.footer__brand a {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  text-decoration: none;
}

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

.footer__nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3) var(--space-5);
}

.footer__nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__nav a:hover {
  color: var(--color-text);
  text-decoration: none;
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  line-height: var(--leading-relaxed);
}


/* ============================================================
   16. BREAKPOINT md — 768px+
   ============================================================ */
@media (min-width: 768px) {

  .header__nav {
    display: flex;
  }

  .header__hamburger {
    display: none;
  }

  .section__inner {
    padding-inline: var(--space-8);
  }

  .section--hero h1 {
    font-size: var(--text-4xl);
  }

  .hero__subtitle {
    font-size: var(--text-lg);
  }

  .calculator__layout {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-8);
  }

  .calculator__form-col {
    flex: 1;
    min-width: 0;
  }

  .calculator__result-col {
    flex: 0 0 360px;
    width: 360px;
  }

  .ad-wrapper--leaderboard {
    display: block;
  }

  .ad-wrapper--sidebar {
    display: block;
  }

  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }

  .footer__nav ul {
    justify-content: flex-end;
  }
}


/* ============================================================
   17. BREAKPOINT lg — 1024px+
   ============================================================ */
@media (min-width: 1024px) {

  .calculator__result-col {
    position: sticky;
    top: calc(var(--header-height) + var(--space-4));
  }

  .section__inner {
    padding-inline: var(--space-10);
  }
}


/* ============================================================
   18. prefers-color-scheme — dark automático do sistema
   ============================================================ */
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --color-bg:            #111111;
    --color-bg-subtle:     #1A1A1A;
    --color-bg-section:    #161616;
    --color-surface:       #1E1E1E;
    --color-border:        #2A2A2A;
    --color-primary:       #3B82F6;
    --color-primary-hover: #60A5FA;
    --color-primary-light: #1E3A5F;
    --color-on-primary:    #FFFFFF;
    --color-text:          #F0F0F0;
    --color-text-muted:    #A3A3A3;
    --color-text-subtle:   #666666;
    --color-success:       #4ADE80;
    --color-danger:        #F87171;
    --color-warning:       #FBBF24;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.30);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.40);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.50);
  }
}