/* ============================================================
   Bios Escola — Landing page
   Design tokens extraídos de grupobios.com.br:
   primário #b10c14, acento dourado #eeca00, texto #1a1a1a
   Tipografia da marca: Open Sans (texto) + Bebas Neue (números/display)
   ============================================================ */

:root {
  /* Cor: base neutra quente (~60%) */
  --color-bg: #faf9f7;
  --color-surface: #ffffff;
  --color-surface-alt: #f3f1ed;
  --color-text: #1a1a1a;
  --color-text-muted: #55524e;
  --color-border: #e5e1db;
  --color-border-strong: #8c8477;

  /* Cor: secundária suave (~30%), derivada do vermelho da marca */
  --color-tint: #fbeeee;
  --color-tint-strong: #f6dcdc;

  /* Cor: destaque de marca (~10%) */
  --color-primary: #b10c14;
  --color-primary-dark: #8a0910;
  --color-primary-contrast: #ffffff;
  --color-gold: #eeca00;
  --color-gold-dark: #8a6e00;

  --color-danger: #8a0910;
  --color-focus: #b10c14;

  /* Tipografia */
  --font-text: "Open Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Bebas Neue", var(--font-text);

  /* Espaçamento, ritmo 4/8 */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* Raios e sombra */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-card: 0 1px 2px rgba(26, 22, 18, 0.06), 0 8px 24px -12px rgba(26, 22, 18, 0.12);
  --shadow-card-hover: 0 2px 4px rgba(26, 22, 18, 0.08), 0 16px 32px -16px rgba(26, 22, 18, 0.18);

  --max-width: 1180px;
  --transition: 180ms ease;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-text);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

/* ---------- Foco visível (acessibilidade) ---------- */
:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -100px;
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 100;
  transition: top var(--transition);
}

.skip-link:focus {
  top: var(--space-3);
}

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

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-6);
  }
}

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

@media (min-width: 1024px) {
  .section {
    padding-block: var(--space-9);
  }
}

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

.section-header {
  max-width: 640px;
  margin-bottom: var(--space-6);
}

.section-header h2 {
  font-size: 1.75rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.section-header p {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

@media (min-width: 768px) {
  .section-header h2 {
    font-size: 2.25rem;
  }
}

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

/* ---------- Botões ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: var(--space-3) var(--space-5);
  border-radius: 999px;
  border: 2px solid transparent;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition), transform var(--transition);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-primary-contrast);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

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

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

.btn-block {
  width: 100%;
}

.btn-whatsapp {
  background: var(--color-text);
  color: #fff;
}

.btn-whatsapp:hover {
  background: var(--color-primary-dark);
}

/* ---------- Cabeçalho ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 249, 247, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text);
}

.brand__mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.375rem;
  letter-spacing: 0.02em;
}

.brand__sub {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.site-nav {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

.site-nav a {
  text-decoration: none;
  font-weight: 600;
  color: var(--color-text-muted);
}

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

@media (min-width: 900px) {
  .site-nav {
    display: flex;
  }
}

.header-cta {
  display: none;
}

@media (min-width: 640px) {
  .header-cta {
    display: inline-flex;
  }
}

.header-cta-mobile {
  display: inline-flex;
  padding-inline: var(--space-4);
}

@media (min-width: 640px) {
  .header-cta-mobile {
    display: none;
  }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--space-8) var(--space-9);
}

.hero__grid {
  display: grid;
  gap: var(--space-7);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.hero h1 {
  font-size: 2.125rem;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--color-text);
}

@media (min-width: 640px) {
  .hero h1 {
    font-size: 2.75rem;
  }
}

@media (min-width: 1024px) {
  .hero h1 {
    font-size: 3.25rem;
  }
}

.hero__subtitle {
  margin-top: var(--space-5);
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 46ch;
}

.hero__actions {
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
}

.hero__support {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.hero__art {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, var(--color-tint) 0%, var(--color-surface) 55%);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.hero__art svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  .hero__content {
    animation: hero-rise 620ms ease both;
  }
}

@keyframes hero-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Faixa de confiança ---------- */
.trust {
  background: var(--color-text);
  color: #fff;
  padding-block: var(--space-7);
}

.trust__inner {
  display: grid;
  gap: var(--space-5);
  align-items: center;
}

@media (min-width: 768px) {
  .trust__inner {
    grid-template-columns: auto 1fr;
    gap: var(--space-7);
  }
}

.trust__number {
  font-family: var(--font-display);
  font-size: 4.5rem;
  line-height: 1;
  color: var(--color-gold);
  white-space: nowrap;
}

.trust__number span {
  display: block;
  font-family: var(--font-text);
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff;
  margin-top: var(--space-1);
  letter-spacing: 0.01em;
}

.trust__text {
  font-size: 1.0625rem;
  color: #e9e6e1;
  max-width: 62ch;
}

/* ---------- Dores ---------- */
.pain-list {
  display: grid;
  gap: var(--space-5);
}

@media (min-width: 768px) {
  .pain-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .pain-item:nth-child(1) {
    margin-top: 0;
  }
  .pain-item:nth-child(2) {
    margin-top: var(--space-7);
  }
  .pain-item:nth-child(3) {
    margin-top: var(--space-3);
  }
  .pain-item:nth-child(4) {
    margin-top: var(--space-6);
  }
}

.pain-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.pain-item__icon {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-tint);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pain-item p {
  color: var(--color-text-muted);
  font-size: 1rem;
}

/* ---------- Um dia na escola (timeline) ---------- */
.timeline {
  position: relative;
  margin-top: var(--space-6);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--color-border);
}

@media (min-width: 900px) {
  .timeline::before {
    left: 50%;
    transform: translateX(-1px);
  }
}

.timeline__item {
  position: relative;
  padding-left: var(--space-8);
  padding-bottom: var(--space-7);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: 12px;
  top: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 4px solid var(--color-bg);
}

.timeline__time {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.timeline__label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: none;
  margin-bottom: var(--space-1);
}

.timeline__item p {
  margin-top: var(--space-2);
  color: var(--color-text-muted);
  max-width: 60ch;
}

@media (min-width: 900px) {
  .timeline__item {
    width: 50%;
    padding-left: 0;
    padding-right: var(--space-8);
  }

  .timeline__item:nth-child(odd) {
    left: 0;
    text-align: right;
  }

  .timeline__item:nth-child(even) {
    left: 50%;
    padding-right: 0;
    padding-left: var(--space-8);
  }

  .timeline__dot {
    left: auto;
    right: -11px;
  }

  .timeline__item:nth-child(even) .timeline__dot {
    left: -11px;
    right: auto;
  }
}

/* ---------- Abas de perfil ---------- */
.profile-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.profile-tabs__tab {
  appearance: none;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  padding: var(--space-3) var(--space-4);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-muted);
  cursor: pointer;
  min-height: 44px;
}

.profile-tabs__tab:hover {
  color: var(--color-primary);
}

.profile-tabs__tab[aria-selected="true"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.profile-tabs__panel {
  display: grid;
  gap: var(--space-6);
}

.profile-tabs__panel[hidden] {
  display: none;
}

@media (min-width: 900px) {
  .profile-tabs__panel {
    grid-template-columns: 0.8fr 1.2fr;
    align-items: start;
  }
}

.profile-tabs__intro h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-3);
}

.profile-tabs__intro p {
  color: var(--color-text-muted);
}

.feature-list {
  display: grid;
  gap: var(--space-3);
  list-style: none;
}

.feature-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.feature-list .icon-check {
  flex: none;
  color: var(--color-primary);
  margin-top: 2px;
}

/* ---------- Destaques ---------- */
.highlights {
  display: grid;
  gap: var(--space-5);
}

.highlight-main {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  display: grid;
  gap: var(--space-4);
}

.highlight-main .icon-badge {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.14);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
}

.highlight-main h3 {
  font-size: 1.625rem;
}

.highlight-main p {
  color: #f5e6e6;
  max-width: 60ch;
  font-size: 1.0625rem;
}

.highlights-row {
  display: grid;
  gap: var(--space-5);
}

@media (min-width: 768px) {
  .highlights-row {
    grid-template-columns: repeat(3, 1fr);
  }
}

.highlight-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: grid;
  gap: var(--space-3);
}

.highlight-card .icon-badge {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-tint);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.highlight-card h3 {
  font-size: 1.125rem;
}

.highlight-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* ---------- Área de telas (molduras) ---------- */
.screens {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .screens {
    grid-template-columns: repeat(3, 1fr);
    align-items: start;
  }
}

.device-frame {
  background: var(--color-surface-alt);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.device-frame__screen {
  aspect-ratio: 9 / 16;
  background: repeating-linear-gradient(
    135deg,
    var(--color-surface) 0px,
    var(--color-surface) 10px,
    #eeece6 10px,
    #eeece6 20px
  );
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.device-frame__note {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
}

.device-frame__caption {
  margin-top: var(--space-3);
  text-align: center;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* ---------- Como começar ---------- */
.steps {
  display: grid;
  gap: var(--space-5);
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .steps {
    grid-template-columns: repeat(5, 1fr);
  }
}

.step-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: grid;
  gap: var(--space-3);
}

.step-card__number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--color-gold-dark);
  line-height: 1;
}

.step-card h3 {
  font-size: 1.0625rem;
}

.step-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.steps-cta {
  margin-top: var(--space-7);
  text-align: center;
}

/* ---------- FAQ ---------- */
.faq-list {
  display: grid;
  gap: var(--space-3);
  max-width: 800px;
}

/* Seção #perguntas: só o bloco (título + lista) é centralizado,
   o texto de cada pergunta e resposta continua alinhado à esquerda. */
#perguntas .section-header {
  margin-inline: auto;
  text-align: center;
}

#perguntas .faq-list {
  margin-inline: auto;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: var(--space-4) var(--space-5);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 44px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item .icon-chevron {
  flex: none;
  transition: transform var(--transition);
  color: var(--color-primary);
}

.faq-item[open] .icon-chevron {
  transform: rotate(180deg);
}

.faq-item__answer {
  padding: 0 var(--space-5) var(--space-5);
  color: var(--color-text-muted);
}

/* ---------- Formulário ---------- */
.form-section {
  background: var(--color-surface-alt);
}

.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  max-width: 760px;
  margin-inline: auto;
  box-shadow: var(--shadow-card);
}

@media (min-width: 768px) {
  .form-card {
    padding: var(--space-7);
  }
}

.form-progress {
  margin-bottom: var(--space-6);
}

.form-progress__label {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.form-progress__track {
  height: 8px;
  background: var(--color-border);
  border-radius: 999px;
  overflow: hidden;
}

.form-progress__bar {
  height: 100%;
  background: var(--color-primary);
  border-radius: 999px;
  transition: width 260ms ease;
}

.form-step {
  display: none;
  flex-direction: column;
  gap: var(--space-5);
}

.form-step.is-active {
  display: flex;
}

.form-step h3 {
  font-size: 1.375rem;
}

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

.field label,
.field legend {
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 0;
}

.field .field-hint {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field textarea {
  font: inherit;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  min-height: 48px;
}

.field textarea {
  min-height: 96px;
  resize: vertical;
}

.field input:focus-visible,
.field textarea:focus-visible {
  border-color: var(--color-primary);
}

.field-error {
  display: none;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-danger);
  font-size: 0.875rem;
  font-weight: 600;
}

.field.has-error input,
.field.has-error textarea {
  border-color: var(--color-danger);
}

.field.has-error .field-error {
  display: flex;
}

fieldset {
  border: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-2);
}

.option-card {
  position: relative;
}

.option-card input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.option-card label {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 48px;
  padding: var(--space-3) var(--space-3);
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: border-color var(--transition), background-color var(--transition), color var(--transition);
}

.option-card input:checked + label {
  border-color: var(--color-primary);
  background: var(--color-tint);
  color: var(--color-primary-dark);
}

.option-card input:focus-visible + label {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.form-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.form-nav .btn {
  flex: 1;
}

.form-nav--start {
  justify-content: flex-end;
}

.form-success {
  display: none;
  text-align: center;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.form-success.is-active {
  display: flex;
}

.form-success .icon-badge {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-tint);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.form-success h3 {
  font-size: 1.5rem;
}

.form-success p {
  color: var(--color-text-muted);
  max-width: 46ch;
}

/* ---------- Rodapé ---------- */
.site-footer {
  background: var(--color-text);
  color: #d9d6d1;
  padding-block: var(--space-7);
}

.site-footer a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer__inner {
  display: grid;
  gap: var(--space-4);
}

.site-footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: #fff;
  font-weight: 700;
  font-size: 1.0625rem;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
  font-size: 0.9375rem;
}

.site-footer__pending {
  font-size: 0.8125rem;
  color: #a9a59f;
}

.site-footer__bottom {
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid #383634;
  font-size: 0.8125rem;
  color: #a9a59f;
}

/* ---------- Ícones ---------- */
.icon {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}