:root {
  --brand: #163f76;
  --brand-deep: #0f3268;
  --brand-ink: #081830;
  --brand-mid: #24568f;
  --sky: #d7e6f5;
  --mist: #eef3f8;
  --paper: #f7f9fc;
  --text: #122033;
  --muted: #5a6b80;
  --line: rgba(22, 63, 118, 0.14);
  --link: #1a4f8c;
  --white: #ffffff;
  --header-h: 72px;
  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "Figtree", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(36, 86, 143, 0.12), transparent 60%),
    radial-gradient(900px 500px at 100% 20%, rgba(22, 63, 118, 0.08), transparent 55%),
    linear-gradient(180deg, var(--mist) 0%, var(--paper) 40%, var(--white) 100%);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--brand);
  color: var(--white);
  padding: 0.6rem 1rem;
  z-index: 100;
}

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

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
  z-index: 40;
  background: rgba(247, 249, 252, 0.72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(247, 249, 252, 0.92);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.brand img {
  border-radius: 8px;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--brand-ink);
}

.site-nav {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s var(--ease);
}

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

.nav-cta {
  color: var(--brand) !important;
  font-weight: 600 !important;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  display: grid;
  place-content: center;
  gap: 6px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--brand-ink);
  transition: transform 0.25s var(--ease);
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  z-index: 35;
  display: grid;
  gap: 0.25rem;
  padding: 1rem 1.25rem 1.5rem;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav a {
  padding: 0.85rem 0.4rem;
  font-weight: 600;
  font-family: var(--font-display);
  color: var(--brand-ink);
  border-bottom: 1px solid var(--line);
}

@media (min-width: 880px) {
  .site-nav {
    display: flex;
  }

  .nav-toggle,
  .mobile-nav {
    display: none !important;
  }
}

/* Hero — one composition, full-bleed media */
.hero {
  position: relative;
  min-height: 100svh;
  min-height: 100dvh;
  display: grid;
  align-items: end;
  color: var(--white);
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  transform: scale(1.04);
  animation: hero-drift 18s var(--ease) infinite alternate;
}

.hero-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(8, 24, 48, 0.35) 0%, rgba(8, 24, 48, 0.15) 35%, rgba(8, 24, 48, 0.78) 100%),
    linear-gradient(90deg, rgba(15, 50, 104, 0.55) 0%, rgba(15, 50, 104, 0.15) 55%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding: calc(var(--header-h) + 2rem) clamp(1.25rem, 5vw, 3.5rem) clamp(2.5rem, 8vh, 4.5rem);
}

.hero-brand {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}

.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.6vw, 2.35rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 16ch;
}

.hero-lead {
  margin: 0 0 1.75rem;
  max-width: 38ch;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: rgba(255, 255, 255, 0.86);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0.85rem 1.35rem;
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}

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

.btn-primary {
  background: var(--white);
  color: var(--brand-deep);
}

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

.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-ghost-dark {
  background: transparent;
  color: var(--brand-ink);
  border-color: var(--line);
}

.btn-ghost-dark:hover {
  background: rgba(22, 63, 118, 0.06);
}

/* Sections */
.section {
  padding: clamp(4rem, 10vw, 7rem) 0;
}

.section-inner {
  width: min(1080px, calc(100% - 2.5rem));
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand-mid);
}

.section h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--brand-ink);
  max-width: 18ch;
}

.section-lead {
  margin: 0 0 2.5rem;
  max-width: 46ch;
  font-size: 1.125rem;
  color: var(--muted);
}

/* Product */
.section-product {
  background:
    linear-gradient(180deg, transparent, rgba(215, 230, 245, 0.45) 30%, transparent),
    var(--paper);
}

.product-shot {
  margin: 0;
  overflow: hidden;
  border-radius: 4px;
}

.product-shot img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: center top;
}

/* Features — rows, not cards */
.section-features {
  background:
    linear-gradient(135deg, rgba(22, 63, 118, 0.04), transparent 40%),
    var(--white);
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.feature-list li {
  display: grid;
  gap: 0.35rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 720px) {
  .feature-list li {
    grid-template-columns: minmax(160px, 220px) 1fr;
    gap: 2rem;
    align-items: baseline;
  }
}

.feature-list strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--brand-ink);
}

.feature-list span {
  color: var(--muted);
}

/* Roles — interaction containers allowed as light panels */
.section-roles {
  background:
    linear-gradient(180deg, var(--brand) 0%, var(--brand-deep) 100%);
  color: var(--white);
}

.section-roles .eyebrow {
  color: rgba(184, 212, 245, 0.9);
}

.section-roles h2 {
  color: var(--white);
}

.roles-grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 800px) {
  .roles-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

.role {
  padding: 1.5rem 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.role h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.role p {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
}

/* Disciplinas */
.section-disciplinas {
  background:
    radial-gradient(700px 320px at 80% 0%, rgba(36, 86, 143, 0.12), transparent 70%),
    var(--mist);
}

.disciplinas-note {
  margin: -1.25rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

/* Contact */
.section-contact {
  background: var(--paper);
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem clamp(1.25rem, 4vw, 2.5rem);
  background: var(--white);
}

.footer-inner {
  width: min(1080px, 100%);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.footer-org {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-mid);
}

.footer-copy {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Motion */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 {
  transition-delay: 0.08s;
}

.reveal-delay-2 {
  transition-delay: 0.16s;
}

.reveal-delay-3 {
  transition-delay: 0.24s;
}

@keyframes hero-drift {
  from {
    transform: scale(1.04) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.08) translate3d(-1.2%, -0.8%, 0);
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-media img {
    animation: none;
  }

  .btn:hover {
    transform: none;
  }
}