:root {
  --navy: #10294a;
  --deep: #071726;
  --green: #2f8a3d;
  --lime: #9acc3a;
  --blue: #4f82bd;
  --gold: #c9a45c;
  --paper: #f7f9f6;
  --muted: #687385;
  --line: rgba(16, 41, 74, 0.12);
  --shadow: 0 24px 70px rgba(7, 23, 38, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--deep);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 82px;
  padding: 14px clamp(18px, 4vw, 64px);
  background: rgba(247, 249, 246, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
  font-weight: 800;
  color: var(--navy);
}

.brand img {
  width: 58px;
  height: 46px;
  object-fit: contain;
  mix-blend-mode: multiply;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #31445d;
  font-size: 0.94rem;
  font-weight: 700;
}

.main-nav a:hover {
  color: var(--green);
}

.header-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0 22px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.header-cta,
.btn-primary {
  background: var(--green);
  color: white;
  box-shadow: 0 14px 26px rgba(47, 138, 61, 0.22);
}

.btn-secondary {
  background: white;
  color: var(--navy);
  border-color: var(--line);
}

.btn-light {
  background: white;
  color: var(--navy);
}

.header-cta:hover,
.btn:hover {
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: white;
  color: var(--navy);
  font-size: 1.2rem;
}

.section,
.hero {
  padding: clamp(76px, 8vw, 120px) clamp(20px, 5vw, 76px);
}

.section-band {
  background:
    linear-gradient(120deg, rgba(7, 23, 38, 0.96), rgba(16, 41, 74, 0.91)),
    radial-gradient(circle at top right, rgba(154, 204, 58, 0.3), transparent 36%);
  color: white;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(340px, 0.86fr);
  align-items: center;
  gap: clamp(36px, 6vw, 82px);
  min-height: calc(100vh - 82px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  font-family: "Playfair Display", Georgia, serif;
  line-height: 1.02;
  letter-spacing: 0;
}

h1 {
  max-width: 820px;
  font-size: clamp(2.9rem, 5.2vw, 5.7rem);
}

h2 {
  max-width: 850px;
  font-size: clamp(2.2rem, 4vw, 4.4rem);
  color: var(--navy);
}

.section-band h1,
.section-band h2 {
  color: white;
}

.hero-copy {
  max-width: 760px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(1rem, 1.4vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0;
}

.trust-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 800px;
}

.trust-row strong,
.trust-row span {
  display: block;
}

.trust-row strong {
  color: var(--lime);
  font-size: 1.25rem;
}

.trust-row span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.88rem;
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  min-height: 520px;
  border-radius: 6px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.hero-card {
  position: absolute;
  right: -22px;
  bottom: 32px;
  width: min(320px, 82%);
  padding: 22px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--deep);
  border-left: 5px solid var(--lime);
  box-shadow: var(--shadow);
}

.hero-card span {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 0.8rem;
  font-weight: 900;
  text-transform: uppercase;
}

.intro-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
  background: white;
}

.intro-strip span {
  padding: 22px 18px;
  border-right: 1px solid var(--line);
  color: var(--navy);
  font-weight: 800;
  text-align: center;
}

.two-col {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(36px, 6vw, 80px);
}

.rich-text p,
.section-heading p,
.impact-copy p,
.ceo-copy p {
  color: #4f5d70;
  font-size: 1.05rem;
}

.section-heading {
  max-width: 980px;
  margin-bottom: 42px;
}

.centered {
  margin-inline: auto;
  text-align: center;
}

.value-grid,
.feature-grid,
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.value-grid article,
.feature-grid article,
.testimonial-grid article,
.faq-list details,
.certificate-preview,
.issued-list {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px;
  box-shadow: 0 18px 45px rgba(16, 41, 74, 0.06);
}

.value-grid span,
.feature-grid span {
  color: var(--green);
  font-weight: 900;
}

h3 {
  margin: 8px 0 10px;
  color: var(--navy);
  font-size: 1.24rem;
  line-height: 1.25;
}

.feature-grid {
  grid-template-columns: repeat(3, 1fr);
}

.courses-section,
.proof-section {
  background: #eef4f0;
}

.courses-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  align-items: stretch;
}

.courses-layout img {
  width: 100%;
  height: 100%;
  min-height: 520px;
  object-fit: cover;
  border-radius: 8px;
}

.course-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.course-list article {
  padding: 28px;
  background: white;
  border-left: 5px solid var(--green);
  border-radius: 8px;
}

.impact-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 44px;
  align-items: center;
  background:
    linear-gradient(rgba(247, 249, 246, 0.92), rgba(247, 249, 246, 0.92)),
    url("assets/educacao-tecnologia.jpeg") center/cover;
}

.impact-metrics {
  display: grid;
  gap: 16px;
}

.impact-metrics article {
  padding: 26px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: 8px;
  backdrop-filter: blur(8px);
}

.impact-metrics strong {
  display: block;
  color: var(--green);
  font-family: "Playfair Display", Georgia, serif;
  font-size: 3rem;
  line-height: 1;
}

.ceo-section {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 44px;
  align-items: center;
}

.ceo-photo img {
  width: 100%;
  max-height: 620px;
  border-radius: 8px;
  object-fit: cover;
  object-position: center top;
  box-shadow: var(--shadow);
}

.testimonial-grid article p {
  font-size: 1.02rem;
  color: #405066;
}

.testimonial-grid strong,
.testimonial-grid span {
  display: block;
}

.testimonial-grid span {
  color: var(--muted);
}

.certificates-section {
  background: var(--deep);
  color: white;
}

.certificates-section h2 {
  color: white;
}

.certificates-section .section-heading p {
  color: rgba(255, 255, 255, 0.76);
}

.certificate-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.tab-button {
  min-height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 0 18px;
  background: rgba(255, 255, 255, 0.08);
  color: white;
  font-weight: 800;
  cursor: pointer;
}

.tab-button.active {
  background: var(--lime);
  color: var(--deep);
}

.tab-panel,
.public-certificate-panel {
  display: none;
  padding: 30px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
}

.tab-panel.active {
  display: block;
}

.public-certificate-panel {
  display: block;
}

.admin-page {
  background: var(--deep);
}

.admin-certificates {
  min-height: calc(100vh - 82px);
}

.admin-certificates h1 {
  max-width: 980px;
}

.admin-preview {
  margin-top: 24px;
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 0 0 18px;
}

.admin-stats article {
  padding: 20px;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
}

.admin-stats strong,
.admin-stats span {
  display: block;
}

.admin-stats strong {
  color: var(--lime);
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  line-height: 1;
}

.admin-stats span {
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
}

.admin-toolbar {
  display: flex;
  align-items: end;
  gap: 16px;
  margin-bottom: 18px;
}

.admin-toolbar label {
  flex: 1;
  display: grid;
  gap: 8px;
  color: rgba(255, 255, 255, 0.82);
  font-weight: 800;
}

.certificate-table-wrap {
  overflow-x: auto;
  background: white;
  border-radius: 8px;
}

.certificate-table {
  width: 100%;
  min-width: 860px;
  border-collapse: collapse;
  color: var(--deep);
}

.certificate-table th,
.certificate-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.certificate-table th {
  color: var(--navy);
  font-size: 0.82rem;
  text-transform: uppercase;
}

.certificate-table button {
  border: 0;
  background: transparent;
  color: var(--green);
  font-weight: 900;
  cursor: pointer;
}

.login-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(460px, 100%);
  padding: 34px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.login-card img {
  width: 118px;
  margin-bottom: 18px;
}

.login-card h1 {
  color: var(--navy);
  font-size: clamp(2.1rem, 5vw, 3.2rem);
}

.login-card p:not(.eyebrow) {
  color: #4f5d70;
}

.login-card form,
.login-card label {
  display: grid;
  gap: 10px;
}

.login-card form {
  margin-top: 22px;
}

.login-card label {
  color: var(--navy);
  font-weight: 800;
}

.login-error {
  margin-top: 16px;
  padding: 12px 14px;
  background: #fff0f0;
  border: 1px solid #ffd1d1;
  border-radius: 8px;
  color: #9d1c1c;
  font-weight: 700;
}

.validate-form label,
.certificate-form label {
  display: grid;
  gap: 8px;
  color: rgba(255, 255, 255, 0.82);
  font-weight: 800;
}

.validate-form > div {
  display: flex;
  gap: 12px;
  margin-top: 10px;
}

input,
textarea {
  width: 100%;
  min-height: 48px;
  border: 1px solid rgba(16, 41, 74, 0.18);
  border-radius: 8px;
  padding: 12px 14px;
  font: inherit;
}

.certificate-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.certificate-form label:first-child,
.certificate-form label:nth-child(7),
.certificate-form button {
  grid-column: 1 / -1;
}

.validation-result {
  margin-top: 18px;
  padding: 18px;
  background: white;
  color: var(--deep);
  border-radius: 8px;
}

.issued-list {
  margin-top: 22px;
  color: var(--deep);
}

.issued-item {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.issued-item button {
  border: 0;
  background: transparent;
  color: var(--green);
  font-weight: 900;
  cursor: pointer;
}

.certificate-preview {
  color: var(--deep);
}

.cert-border {
  min-height: 360px;
  padding: 34px;
  border: 8px double var(--gold);
  text-align: center;
  background: #fffdf7;
}

.cert-border img {
  width: 150px;
  margin: 0 auto 16px;
}

.cert-border p {
  color: var(--gold);
  font-family: "Playfair Display", Georgia, serif;
  font-size: 2rem;
  font-weight: 800;
}

.faq-list {
  display: grid;
  gap: 12px;
}

summary {
  color: var(--navy);
  font-weight: 900;
  cursor: pointer;
}

.final-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: clamp(54px, 6vw, 82px) clamp(20px, 5vw, 76px);
  background: linear-gradient(120deg, var(--green), var(--navy));
  color: white;
}

.final-cta h2 {
  color: white;
  max-width: 900px;
}

.final-cta p:not(.eyebrow) {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.84);
}

.site-footer {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 34px;
  padding: 52px clamp(20px, 5vw, 76px);
  background: #050d16;
  color: rgba(255, 255, 255, 0.72);
}

.site-footer img {
  width: 130px;
  margin-bottom: 14px;
  filter: brightness(1.1);
}

.site-footer h3 {
  color: white;
}

.site-footer a,
.site-footer span {
  display: block;
  margin: 7px 0;
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .main-nav,
  .header-cta {
    display: none;
  }

  .site-header.nav-open {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .site-header.nav-open .main-nav,
  .site-header.nav-open .header-cta {
    display: flex;
  }

  .site-header.nav-open .main-nav {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding-top: 12px;
  }

  .hero,
  .two-col,
  .courses-layout,
  .impact-section,
  .ceo-section,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .trust-row,
  .value-grid,
  .feature-grid,
  .testimonial-grid,
  .course-list,
  .intro-strip,
  .admin-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-visual img {
    min-height: 380px;
  }

  .hero-card {
    right: 18px;
  }
}

@media (max-width: 640px) {
  .brand span {
    max-width: 150px;
    line-height: 1.1;
  }

  .hero {
    min-height: auto;
  }

  .hero-actions,
  .validate-form > div,
  .final-cta,
  .admin-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .trust-row,
  .value-grid,
  .feature-grid,
  .testimonial-grid,
  .course-list,
  .intro-strip,
  .certificate-form,
  .admin-stats {
    grid-template-columns: 1fr;
  }

  .tab-panel {
    padding: 18px;
  }

  .public-certificate-panel {
    padding: 18px;
  }

  .issued-item {
    flex-direction: column;
  }
}