/* Landing page de agenda-ia.digital — segue o design system Agenda.IA (packages/ui/tokens.css). */
@font-face {
  font-family: "Sora";
  font-style: normal;
  font-weight: 600 700;
  font-display: swap;
  src: url("fonts/Sora-latin.woff2") format("woff2");
}
@font-face {
  font-family: "Nunito Sans";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("fonts/NunitoSans-latin.woff2") format("woff2");
}

:root {
  color-scheme: light;
  --surface: #f6f5ef;
  --surface-raised: #ffffff;
  --line: #d9d8ce;
  --ink: #17211f;
  --ink-muted: #57635f;
  --lousa: #1b6b58;
  --lousa-soft: #d6efe4;
  --on-lousa: #ffffff;
  --faisca: #9a4c06;
  --faisca-soft: #fbe9c9;
  --caneta: #2a55b5;
  --caneta-soft: #dde6fa;
  --alerta: #b3261e;
  --alerta-soft: #fbe0dd;
  --focus-ring: var(--lousa);
  --shadow-card: 0 1px 2px rgba(23, 33, 31, 0.06), 0 4px 12px rgba(23, 33, 31, 0.06);
  --font-display: "Sora", "Segoe UI", system-ui, sans-serif;
  --font-sans: "Nunito Sans", "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --surface: #121816;
    --surface-raised: #1b2321;
    --line: #2e3835;
    --ink: #edf1ec;
    --ink-muted: #a3aea9;
    --lousa: #6fd4b5;
    --lousa-soft: #173a31;
    --on-lousa: #121816;
    --faisca: #f5b544;
    --faisca-soft: #3d2b0a;
    --caneta: #93b4ff;
    --caneta-soft: #1c2a4d;
    --alerta: #ff8a80;
    --alerta-soft: #4a1c19;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.35);
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 24px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--lousa);
  font-weight: 700;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 4px;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  color: var(--ink);
  margin: 0;
}

p {
  margin: 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 20;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  background: var(--lousa);
  color: var(--on-lousa);
}
.skip-link:focus {
  top: 12px;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}
@media (min-width: 768px) {
  .container {
    padding: 0 24px;
  }
}

/* ---------- Tipografia (escala do design system) ---------- */
.display-xl {
  font-size: 32px;
  line-height: 38px;
  letter-spacing: -0.02em;
  font-weight: 700;
}
@media (min-width: 768px) {
  .display-xl {
    font-size: 44px;
    line-height: 48px;
  }
}
.title-lg {
  font-size: 24px;
  line-height: 30px;
  letter-spacing: -0.01em;
  font-weight: 700;
}
@media (min-width: 768px) {
  .title-lg {
    font-size: 28px;
    line-height: 34px;
  }
}
.title-md {
  font-size: 20px;
  line-height: 26px;
  font-weight: 600;
}
.title-sm {
  font-size: 16px;
  line-height: 22px;
  font-weight: 600;
}
.body-sm {
  font-size: 14px;
  line-height: 20px;
}
.label {
  font-size: 13px;
  line-height: 16px;
  letter-spacing: 0.04em;
  font-weight: 700;
  text-transform: uppercase;
}
.muted {
  color: var(--ink-muted);
}
.mono {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 16px;
  font-weight: 700;
}

/* ---------- Botões (variantes do design system) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-weight: 700;
  text-decoration: none;
  transition: filter 0.15s ease, background-color 0.15s ease;
  font-size: 16px;
  line-height: 24px;
  padding: 12px 20px;
}
.btn-sm {
  font-size: 14px;
  line-height: 20px;
  padding: 8px 14px;
}
.btn-xl {
  font-size: 18px;
  line-height: 24px;
  padding: 16px 24px;
}
.btn-primary {
  background: var(--lousa);
  color: var(--on-lousa);
}
.btn-primary:hover {
  filter: brightness(1.1);
}
.btn-secondary {
  background: var(--surface-raised);
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn-secondary:hover {
  background: var(--surface);
}
.btn-ghost {
  background: transparent;
  color: var(--lousa);
}
.btn-ghost:hover {
  background: var(--lousa-soft);
}
.btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ---------- Tags: quem informou ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 13px;
  line-height: 16px;
  letter-spacing: 0.04em;
  font-weight: 700;
  text-transform: uppercase;
}
.tag-escola {
  background: var(--lousa-soft);
  color: var(--lousa);
}
.tag-professor {
  background: var(--caneta-soft);
  color: var(--caneta);
}
.tag-aluno {
  background: var(--surface-raised);
  color: var(--ink);
  border: 1px solid var(--line);
}
.tag-ia {
  background: var(--faisca-soft);
  color: var(--faisca);
}

/* ---------- Cartões ---------- */
.card {
  border: 1px solid var(--line);
  background: var(--surface-raised);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.card-floating {
  box-shadow: var(--shadow-card);
}
.card-ia {
  background: var(--faisca-soft);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  gap: 12px;
}
.card-ia .icon {
  color: var(--faisca);
  margin-top: 2px;
}

.icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}
.icon-tile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
}
.icon-tile.lousa {
  background: var(--lousa-soft);
  color: var(--lousa);
}
.icon-tile.caneta {
  background: var(--caneta-soft);
  color: var(--caneta);
}
.icon-tile.neutro {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
}
.icon-tile.faisca {
  background: var(--faisca-soft);
  color: var(--faisca);
}

.dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  flex-shrink: 0;
}

/* ---------- Cabeçalho ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: saturate(1.2) blur(8px);
  -webkit-backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}
.brand img {
  height: 32px;
  width: auto;
}
.nav {
  display: none;
  gap: 4px;
}
.nav a {
  color: var(--ink);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: var(--radius-md);
}
.nav a:hover {
  background: var(--lousa-soft);
  color: var(--lousa);
}
.header-cta {
  display: flex;
  gap: 8px;
}
.header-cta .only-desktop {
  display: none;
}
@media (min-width: 900px) {
  .nav {
    display: flex;
  }
  .header-cta .only-desktop {
    display: inline-flex;
  }
}

/* ---------- Seções ---------- */
section {
  padding: 56px 0;
}
@media (min-width: 768px) {
  section {
    padding: 88px 0;
  }
}
.section-head {
  max-width: 680px;
  margin-bottom: 32px;
}
.section-head .label {
  display: block;
  color: var(--lousa);
  margin-bottom: 12px;
}
.section-head p {
  margin-top: 12px;
  color: var(--ink-muted);
  font-size: 18px;
  line-height: 28px;
}
.band {
  background: var(--surface-raised);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* ---------- Hero ---------- */
.hero {
  padding-top: 40px;
}
@media (min-width: 768px) {
  .hero {
    padding-top: 72px;
  }
}
.hero-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
  }
}
.hero .eyebrow {
  margin-bottom: 20px;
}
.hero-lead {
  margin-top: 20px;
  font-size: 18px;
  line-height: 28px;
  color: var(--ink-muted);
  max-width: 560px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.hero-actions .btn {
  flex: 1 1 220px;
}
@media (min-width: 560px) {
  .hero-actions .btn {
    flex: 0 0 auto;
  }
}
.hero-note {
  margin-top: 16px;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  padding: 8px 0 24px;
}
.phone {
  width: min(300px, 78vw);
  border-radius: 40px;
  padding: 10px;
  background: var(--ink);
  box-shadow: var(--shadow-card);
}
.phone img {
  border-radius: 30px;
  width: 100%;
}
.hero-visual .card-ia {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 300px;
  box-shadow: var(--shadow-card);
}
@media (max-width: 559px) {
  .hero-visual .card-ia {
    position: static;
    margin-top: -48px;
    max-width: none;
  }
  .hero-visual {
    flex-direction: column;
    align-items: center;
  }
}

/* ---------- Três fontes ---------- */
.grid-3 {
  display: grid;
  gap: 16px;
}
@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}
.source-card h3 {
  margin: 16px 0 8px;
}
.source-card ul {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.source-card li {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  font-size: 14px;
  line-height: 20px;
  color: var(--ink-muted);
}
.source-card li svg {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  color: var(--lousa);
  flex-shrink: 0;
}
.source-card .card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.merge {
  display: flex;
  justify-content: center;
  color: var(--ink-muted);
  padding: 16px 0;
}
.merge svg {
  width: 28px;
  height: 28px;
}
.result {
  display: grid;
  gap: 16px;
  align-items: center;
}
@media (min-width: 768px) {
  .result {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

/* sessão de estudo (como o cartão do app) */
.session {
  border: 1px solid var(--line);
  background: var(--surface-raised);
  border-radius: var(--radius-lg);
  padding: 16px;
}
.session + .session {
  margin-top: 12px;
}
.session-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.session h4 {
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 22px;
  font-weight: 600;
  margin: 12px 0 6px;
}
.session .meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  line-height: 20px;
  color: var(--ink-muted);
}

/* ---------- Como se ajusta ---------- */
.steps {
  display: grid;
  gap: 16px;
  counter-reset: passo;
  margin: 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}
@media (min-width: 1024px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }
}
.steps li {
  counter-increment: passo;
}
.steps .num::before {
  content: counter(passo);
}
.steps .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: var(--lousa-soft);
  color: var(--lousa);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
}
.steps h3 {
  margin: 16px 0 8px;
}
.steps p {
  color: var(--ink-muted);
  font-size: 14px;
  line-height: 20px;
}

.rebalance {
  display: grid;
  gap: 24px;
  margin-top: 40px;
  align-items: start;
}
@media (min-width: 900px) {
  .rebalance {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}
.diff {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}
.diff-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius-md);
  background: var(--surface);
  font-size: 14px;
  line-height: 20px;
}
.diff-row .mono {
  color: var(--ink-muted);
  min-width: 64px;
}
.diff-row .grow {
  flex: 1;
  min-width: 0;
}
.diff-row s {
  color: var(--ink-muted);
}

.checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.checklist li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.checklist svg {
  width: 20px;
  height: 20px;
  color: var(--lousa);
  margin-top: 2px;
  flex-shrink: 0;
}

/* ---------- Telas ---------- */
.screens {
  display: grid;
  gap: 20px;
}
@media (min-width: 900px) {
  .screens {
    grid-template-columns: 0.8fr 1.6fr;
    align-items: start;
  }
}
.screen-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow: hidden;
}
.screen-card .shot {
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--surface);
}
.screen-card .shot.phone-shot {
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
  border-radius: 24px;
  /* mostra só o topo da tela (cabeçalho + primeiro dia) */
  aspect-ratio: 780 / 1060;
}
.screen-card .shot.phone-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}
.screen-card .card-top {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.screen-card > .btn {
  align-self: flex-start;
}

/* ---------- Confiança / privacidade ---------- */
.trust {
  display: grid;
  gap: 16px;
}
@media (min-width: 768px) {
  .trust {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}
.trust .card h3 {
  margin: 16px 0 8px;
}
.trust .card p {
  color: var(--ink-muted);
}

/* ---------- CTA final ---------- */
.cta-card {
  display: grid;
  gap: 24px;
  align-items: center;
  padding: 28px;
}
@media (min-width: 900px) {
  .cta-card {
    grid-template-columns: 1.2fr 1fr;
    padding: 40px;
  }
}
.cta-options {
  display: grid;
  gap: 12px;
}
.cta-option {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  text-decoration: none;
  color: var(--ink);
  font-weight: 400;
  transition: border-color 0.15s ease;
}
.cta-option:hover {
  border-color: var(--lousa);
}
.cta-option strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
}
.cta-option .arrow {
  margin-left: auto;
  color: var(--lousa);
}

/* ---------- Rodapé ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 40px;
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  align-items: center;
  justify-content: space-between;
}
.site-footer img {
  height: 28px;
  width: auto;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

/* logo clara/escura conforme o tema */
.logo-dark {
  display: none;
}
@media (prefers-color-scheme: dark) {
  .logo-light {
    display: none;
  }
  .logo-dark {
    display: block;
  }
}

/* ---------- Contato ---------- */
.contacts {
  display: grid;
  gap: 16px;
}
@media (min-width: 768px) {
  .contacts {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}
.contact-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-number {
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 30px;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.contact-actions .btn {
  flex: 1 1 140px;
}