/* ==========================================================
   KORTEX — Site Institucional
   HOME MVP 1
   ========================================================== */

:root {
  --color-bg: #0a0a0c;
  --color-bg-elevated: #121215;
  --color-text: #f5f5f4;
  --color-text-muted: #b8b8bd;
  --color-accent: #c9a86a;
  --color-border: rgba(245, 245, 244, 0.16);
  --color-focus: #e8c988;

  --header-height: 88px;
  --max-width: 1400px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --transition-fast: 160ms ease;
  --transition-medium: 320ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

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

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-bg-elevated);
  color: var(--color-text);
  padding: 0.75rem 1.25rem;
  border-radius: 4px;
  border: 1px solid var(--color-border);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
}

/* Focus visibility */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

/* ==========================================================
   HEADER
   ========================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: linear-gradient(to bottom, rgba(10, 10, 12, 0.65) 0%, rgba(10, 10, 12, 0) 100%);
}

.site-header__inner {
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  white-space: nowrap;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 2.5vw, 2.5rem);
  flex: 1;
  justify-content: center;
}

.primary-nav a {
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
  padding: 0.5rem 0.1rem;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  padding: 0.65rem 1.4rem;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.btn--ghost {
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.header-cta {
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 0;
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 1px;
  margin: 0 auto;
  background-color: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* ==========================================================
   HERO
   ========================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--color-bg);
}

.hero__background {
  position: absolute;
  inset: 0;
  /* Asset final: assets/hero-kortex.webp (ver assets/README.md).
     Arquivo ainda não fornecido — mantém-se apenas o fallback CSS
     (gradiente escuro) para evitar erro 404 no console.
     Quando o asset final for adicionado, restaurar aqui:
     background-image: url("assets/hero-kortex.webp"), radial-gradient(circle at 75% 45%, #1c1c22 0%, #0a0a0c 62%); */
  background-image: radial-gradient(circle at 75% 45%, #1c1c22 0%, #0a0a0c 62%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    rgba(10, 10, 12, 0.94) 0%,
    rgba(10, 10, 12, 0.82) 32%,
    rgba(10, 10, 12, 0.45) 60%,
    rgba(10, 10, 12, 0.25) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: calc(var(--header-height) + 2rem) clamp(1.5rem, 4vw, 3rem) 4rem;
}

.hero__brand {
  margin: 0 0 1.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--color-accent);
}

.hero__title {
  margin: 0 0 1.5rem;
  max-width: 20ch;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.hero__description {
  margin: 0 0 2.75rem;
  max-width: 42ch;
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--color-text-muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn--primary {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #14140f;
  font-weight: 600;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--color-focus);
  border-color: var(--color-focus);
}

.btn--secondary {
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--secondary:hover,
.btn--secondary:focus-visible {
  border-color: var(--color-text);
  background-color: rgba(245, 245, 244, 0.06);
}

/* ==========================================================
   RESPONSIVE
   ========================================================== */

@media (max-width: 900px) {
  .primary-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    z-index: 99;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background-color: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-medium);
  }

  .primary-nav.is-open {
    max-height: 320px;
  }

  .primary-nav a {
    width: 100%;
    padding: 1rem clamp(1.5rem, 4vw, 3rem);
    border-bottom: 1px solid var(--color-border);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .header-cta {
    display: none;
  }
}

@media (max-width: 600px) {
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .hero__overlay {
    background: rgba(10, 10, 12, 0.86);
  }
}

/* ==========================================================
   HEADER — variação sólida (páginas internas)
   ========================================================== */

.site-header--solid {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.primary-nav a[aria-current="page"] {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

/* ==========================================================
   PAGE HERO — hero institucional de páginas internas
   ========================================================== */

.page-hero {
  padding: calc(var(--header-height) + 5rem) clamp(1.5rem, 4vw, 3rem) 5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.page-hero__content {
  max-width: 60ch;
}

.page-hero__title {
  margin: 0 0 1.5rem;
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.page-hero__description {
  margin: 0 0 2.75rem;
  max-width: 48ch;
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--color-text-muted);
}

.page-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================================
   SECTION — seções verticais genéricas
   ========================================================== */

.section {
  padding: 5rem clamp(1.5rem, 4vw, 3rem);
  border-top: 1px solid var(--color-border);
}

.section--alt {
  background-color: var(--color-bg-elevated);
}

.section--portal {
  text-align: center;
  padding-top: clamp(4rem, 8vw, 6rem);
  padding-bottom: clamp(4rem, 8vw, 6rem);
}

.section__content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section__content--center {
  max-width: 60ch;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section__title {
  margin: 0 0 1.5rem;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.section__lead {
  margin: 0 0 1.25rem;
  max-width: 60ch;
  font-size: clamp(1rem, 1.3vw, 1.1rem);
  color: var(--color-text);
}

.section__text {
  margin: 0 0 2rem;
  max-width: 60ch;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.section__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 60ch;
}

.section__list li {
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.section__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 1px;
  background-color: var(--color-accent);
}

/* ==========================================================
   EDITORIAL — seções amplas e assimétricas
   (Cálculos Individuais / Cálculos em Massa)
   ========================================================== */

.editorial {
  padding: clamp(4rem, 10vw, 8rem) clamp(1.5rem, 4vw, 3rem);
  border-top: 1px solid var(--color-border);
}

.editorial--alt {
  background-color: var(--color-bg-elevated);
}

.editorial__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  align-items: start;
  gap: clamp(2rem, 6vw, 6rem);
}

.editorial--reverse .editorial__inner {
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
}

.editorial--reverse .editorial__body {
  order: 1;
}

.editorial--reverse .editorial__index {
  order: 2;
  text-align: right;
}

.editorial__index {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 300;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.45;
}

.editorial__body {
  max-width: 46ch;
}

.editorial__title {
  margin: 0 0 1.5rem;
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.editorial__lead {
  margin: 0 0 3rem;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.5;
  color: var(--color-text-muted);
}

.editorial__points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.editorial__points li {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
}

/* ==========================================================
   STEPS — sequência "como funciona"
   ========================================================== */

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  max-width: 56ch;
}

.steps__item {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
}

.steps__item:last-child {
  border-bottom: 1px solid var(--color-border);
}

.steps__index {
  flex-shrink: 0;
  width: 2.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--color-accent);
}

.steps__text {
  font-size: 1rem;
  color: var(--color-text);
}

/* ==========================================================
   INTEREST FORM — formulário de interesse
   ========================================================== */

.interest-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
  max-width: 60ch;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-field--full {
  grid-column: 1 / -1;
}

.form-field label {
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
}

.form-field input,
.form-field select,
.form-field textarea {
  background-color: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 0.65rem 0.85rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
}

.form-field input:focus-visible,
.form-field select:focus-visible,
.form-field textarea:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-color: var(--color-accent);
}

.form-field textarea {
  resize: vertical;
}

.form-field.is-invalid input,
.form-field.is-invalid select,
.form-field.is-invalid textarea {
  border-color: #d98c8c;
}

.form-field__error {
  font-size: 0.8rem;
  color: #e2a5a5;
}

.form-feedback {
  grid-column: 1 / -1;
  min-height: 1.5rem;
  font-size: 0.9rem;
}

.form-feedback.is-success {
  color: var(--color-accent);
}

.form-feedback.is-error {
  color: #e2a5a5;
}

.form-field--actions {
  margin-top: 0.5rem;
}

/* Honeypot anti-spam: deslocado da área visível da tela sem usar
   display:none (evita heurísticas simples de bots que ignoram esse
   valor), fora da ordem de tabulação e do fluxo de leitura normal. */
.form-field--honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-privacy-note {
  margin: 0.5rem 0 0;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.interest-form button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ==========================================================
   FOOTER
   ========================================================== */

.site-footer {
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem clamp(1.5rem, 4vw, 3rem);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
}

.site-footer__logo {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--color-text);
}

.site-footer__tagline {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2rem;
}

.site-footer__links a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.site-footer__links a:hover,
.site-footer__links a:focus-visible {
  color: var(--color-text);
}

/* ==========================================================
   RESPONSIVE — páginas internas
   ========================================================== */

@media (max-width: 900px) {
  .page-hero {
    padding-top: calc(var(--header-height) + 3rem);
  }

  .editorial__inner,
  .editorial--reverse .editorial__inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .editorial__index,
  .editorial--reverse .editorial__index {
    order: 0;
    text-align: left;
  }

  .editorial--reverse .editorial__body {
    order: 0;
  }

  .editorial__body {
    max-width: none;
  }
}

@media (max-width: 600px) {
  .page-hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .interest-form {
    grid-template-columns: 1fr;
  }

  .site-footer__inner {
    flex-direction: column;
  }
}

/* ==========================================================
   ACCESSIBILITY — reduced motion
   ========================================================== */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}