* {
  box-sizing: border-box;
}

:root {
  --verde: #18543c;
  --verde-escuro: #0f3828;
  --verde-claro: #e4f2eb;
  --dourado: #f5b942;
  --vermelho: #b83a35;
  --azul: #2867a8;
  --tinta: #13201a;
  --texto: #52645b;
  --linha: #d5e4da;
  --papel: #f7f9f5;
  --branco: #ffffff;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--tinta);
  background: var(--papel);
  line-height: 1.6;
}

a {
  color: var(--verde);
  font-weight: 700;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px clamp(16px, 4vw, 48px);
  background: var(--branco);
  border-bottom: 1px solid var(--linha);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand img {
  width: 62px;
  height: 62px;
  object-fit: contain;
}

.brand strong {
  display: block;
  color: var(--verde-escuro);
  font-size: 1.05rem;
}

.brand small {
  display: block;
  max-width: 760px;
  color: var(--texto);
  line-height: 1.35;
}

.nav-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 14px;
  color: var(--branco);
  background: var(--verde);
  border: 0;
  border-radius: 8px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.button.secondary {
  color: var(--verde-escuro);
  background: var(--verde-claro);
  border: 1px solid var(--linha);
}

main {
  width: min(1080px, calc(100% - 28px));
  margin: 0 auto;
  padding: 28px 0 44px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  gap: 26px;
  align-items: center;
  margin-bottom: 24px;
}

.hero h1 {
  margin: 0 0 12px;
  color: var(--verde-escuro);
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1.08;
}

.hero p,
.card p {
  color: var(--texto);
}

.hero img,
.media {
  width: 100%;
  border: 1px solid var(--linha);
  border-radius: 8px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.panel {
  padding: 20px;
  background: var(--branco);
  border: 1px solid var(--linha);
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.callout {
  padding: 14px 16px;
  background: #fff8dc;
  border-left: 5px solid var(--dourado);
  border-radius: 8px;
  font-weight: 700;
}

.banner {
  padding: 12px 14px;
  color: var(--branco);
  background: var(--vermelho);
  border-radius: 8px;
  font-weight: 700;
}

.banner.slide {
  width: fit-content;
  animation: slide 2s ease-in-out infinite alternate;
}

.banner.pulse {
  background: var(--verde);
  animation: pulse 1.5s ease-in-out infinite;
}

.banner.marquee {
  overflow: hidden;
  color: var(--tinta);
  background: var(--dourado);
  white-space: nowrap;
}

.banner.marquee span {
  display: inline-block;
  padding-left: 100%;
  animation: marquee 10s linear infinite;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--branco);
  border-radius: 8px;
  overflow: hidden;
}

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--linha);
  text-align: left;
}

th {
  color: var(--branco);
  background: var(--verde);
}

hr {
  border: 0;
  border-top: 2px solid var(--linha);
  margin: 24px 0;
}

pre {
  overflow: auto;
  padding: 14px;
  color: #e9fff2;
  background: #101d17;
  border-radius: 8px;
}

code {
  font-family: Consolas, "Courier New", monospace;
}

label {
  display: block;
  margin: 12px 0 5px;
  font-weight: 700;
}

input,
textarea,
select {
  width: 100%;
  min-height: 40px;
  padding: 9px 11px;
  border: 1px solid var(--linha);
  border-radius: 8px;
  font: inherit;
}

textarea {
  min-height: 110px;
  resize: vertical;
}

.status {
  min-height: 24px;
  color: var(--verde);
  font-weight: 700;
}

.footer {
  padding: 22px;
  color: var(--branco);
  text-align: center;
  background: var(--verde-escuro);
}

.layout-dhtml {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  min-height: 360px;
  border: 1px solid var(--linha);
  border-radius: 8px;
  overflow: hidden;
}

.layout-dhtml aside {
  padding: 18px;
  background: var(--verde-claro);
}

.layout-dhtml section {
  padding: 22px;
  background: var(--branco);
}

.tag-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 12px;
  background: var(--branco);
  border: 1px solid var(--linha);
  border-radius: 8px;
}

.hex-title {
  color: #18543c;
  font-size: 48px;
}

.hex-normal {
  color: #52645b;
  font-size: 16px;
}

.hex-red {
  color: #b83a35;
}

.hex-blue {
  color: #2867a8;
}

.mini-asset {
  max-width: 180px;
  image-rendering: auto;
}

.color-lab {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.85fr);
  gap: 18px;
  align-items: start;
}

.color-controls {
  display: grid;
  gap: 12px;
}

.color-control-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 64px;
  gap: 10px;
  align-items: end;
}

.color-control-row input[type="color"] {
  min-height: 40px;
  padding: 4px;
}

.palette {
  display: grid;
  grid-template-columns: repeat(5, minmax(44px, 1fr));
  gap: 8px;
}

.swatch {
  min-height: 44px;
  padding: 0;
  border: 2px solid var(--linha);
  border-radius: 8px;
  box-shadow: none;
}

.swatch[aria-pressed="true"] {
  border-color: var(--tinta);
  outline: 3px solid rgba(245, 185, 66, 0.45);
}

.color-preview {
  min-height: 220px;
  padding: 22px;
  background: var(--branco);
  border: 1px solid var(--linha);
  border-radius: 8px;
}

.color-preview-title {
  margin: 0 0 10px;
  color: #18543c;
  font-size: 44px;
  line-height: 1.08;
}

.color-preview-text {
  color: #52645b;
  font-size: 16px;
}

@keyframes slide {
  from { transform: translateX(0); }
  to { transform: translateX(22px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-100%); }
}

@media (max-width: 760px) {
  .site-header,
  .hero,
  .grid,
  .grid.three,
  .color-lab,
  .layout-dhtml {
    display: grid;
    grid-template-columns: 1fr;
  }

  .brand small {
    max-width: 100%;
  }

  .nav-buttons {
    justify-content: flex-start;
  }

  .tag-list {
    grid-template-columns: 1fr;
  }

  .hex-title {
    font-size: 34px;
  }
}