:root {
  --site-primary: #2f6f9f;
  --site-primary-dark: #1f567d;
  --site-ink: #1f2933;
  --site-muted: #64748b;
  --site-cream: #e8eef5;
  --site-panel: #f8fafc;
  --site-border: rgba(31, 41, 51, 0.16);
  --site-shadow: 0 1rem 3rem rgba(15, 23, 42, 0.16);
}

html {
  scroll-behavior: smooth;
}

body {
  background: linear-gradient(180deg, #f4f7fb 0%, var(--site-cream) 100%);
  color: var(--site-ink);
  font-family: Merriweather, Georgia, serif;
  line-height: 1.7;
}

h1,
h2,
h3,
h4,
h5,
h6,
.navbar-brand,
.btn,
.badge,
.lead-label {
  font-family: "Merriweather Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: var(--site-primary-dark);
}

a:hover,
a:focus {
  color: #153e5f;
}

.site-navbar {
  background: rgba(241, 245, 249, 0.95);
  border-bottom: 1px solid var(--site-border);
  box-shadow: 0 0.25rem 1rem rgba(15, 23, 42, 0.09);
  backdrop-filter: blur(10px);
}

.site-navbar .navbar-brand {
  color: var(--site-ink);
  font-weight: 700;
  letter-spacing: 0.03em;
}

.site-navbar .nav-link {
  color: rgba(31, 41, 51, 0.74);
  font-family: "Merriweather Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 700;
}

.site-navbar .nav-link:hover,
.site-navbar .nav-link:focus,
.site-navbar .nav-link.active {
  color: var(--site-primary-dark);
}

.btn-primary {
  --bs-btn-bg: var(--site-primary);
  --bs-btn-border-color: var(--site-primary);
  --bs-btn-hover-bg: var(--site-primary-dark);
  --bs-btn-hover-border-color: var(--site-primary-dark);
  --bs-btn-active-bg: var(--site-primary-dark);
  --bs-btn-active-border-color: var(--site-primary-dark);
}

.btn-outline-primary {
  --bs-btn-color: var(--site-primary-dark);
  --bs-btn-border-color: var(--site-primary);
  --bs-btn-hover-bg: var(--site-primary);
  --bs-btn-hover-border-color: var(--site-primary);
}

.text-primary {
  color: var(--site-primary) !important;
}

.bg-primary {
  background-color: var(--site-primary) !important;
}


.text-muted {
  color: var(--site-muted) !important;
}

.form-control,
.form-control-color {
  background-color: #f8fafc;
  border-color: #b8c6d6;
}

.form-control:focus {
  background-color: #fff;
  border-color: var(--site-primary);
  box-shadow: 0 0 0 0.25rem rgba(47, 111, 159, 0.18);
}

.page-section {
  padding: 6rem 0;
}

.hero {
  position: relative;
  min-height: 88vh;
  padding: 8rem 0 5rem;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.82), rgba(47, 111, 159, 0.56)), var(--hero-image, none) center/cover;
  z-index: -2;
}

.hero::after {
  content: "";
  position: absolute;
  width: 34rem;
  height: 34rem;
  right: -12rem;
  bottom: -16rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  z-index: -1;
}

.home-hero,
.sandbox-hero,
.cfg-hero,
.snake-hero {
  --hero-image: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.18), transparent 28%);
}

.portfolio-hero {
  --hero-image: url("../portfolio/assets/img/bg-masthead.jpg");
}

.hero-card {
  background: rgba(248, 250, 252, 0.95);
  border: 1px solid rgba(203, 213, 225, 0.74);
  border-radius: 1.5rem;
  box-shadow: var(--site-shadow);
  color: var(--site-ink);
  padding: clamp(2rem, 5vw, 4rem);
}

.hero-card.dark {
  background: rgba(15, 23, 42, 0.72);
  color: #fff;
}

.lead-label {
  color: var(--site-primary-dark);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-jump-nav {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid rgba(226, 232, 240, 0.26);
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.28);
}

.section-jump-label,
.section-jump-nav a {
  font-family: "Merriweather Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-jump-label {
  color: rgba(255, 255, 255, 0.58);
}

.section-jump-nav a {
  color: #fff;
  text-decoration: none;
}

.section-jump-nav a:hover,
.section-jump-nav a:focus {
  color: #bfdbfe;
}

.divider {
  width: 4rem;
  height: 0.2rem;
  margin: 1.5rem auto;
  border: 0;
  border-radius: 999px;
  background: var(--site-primary);
  opacity: 1;
}

.divider.light {
  background: #fff;
}

.content-card,
.project-card,
.control-card {
  background: var(--site-panel);
  border: 1px solid var(--site-border);
  border-radius: 1rem;
  box-shadow: 0 0.75rem 2rem rgba(15, 23, 42, 0.11);
}

.project-card {
  height: 100%;
  padding: 2rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-0.25rem);
  box-shadow: var(--site-shadow);
}

.icon-circle {
  width: 4rem;
  height: 4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(47, 111, 159, 0.14);
  color: var(--site-primary-dark);
  font-size: 1.6rem;
}

.portfolio-box {
  position: relative;
  display: block;
  overflow: hidden;
  color: #fff;
  min-height: 16rem;
  background: #111;
}

.portfolio-box img {
  width: 100%;
  height: 100%;
  min-height: 16rem;
  object-fit: cover;
  transition: transform 0.28s ease, opacity 0.28s ease;
}

.portfolio-box-caption {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.05), rgba(15, 23, 42, 0.9));
}

.portfolio-box:hover img,
.portfolio-box:focus img {
  transform: scale(1.04);
  opacity: 0.78;
}

.project-category {
  font-family: "Merriweather Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.project-name {
  color: #fff;
  font-size: 0.95rem;
}

.sandbox-list .list-group-item {
  border-color: var(--site-border);
  padding: 1.25rem;
}

.sandbox-list .badge {
  background: rgba(47, 111, 159, 0.14);
  color: var(--site-primary-dark);
}

.cfg-editor {
  min-height: 36rem;
  line-height: 1.5;
  font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.92rem;
}

.output-list {
  min-height: 8rem;
}

.game-canvas {
  width: min(100%, 400px);
  height: auto;
  border: 0.75rem solid #dbe5ef;
  border-radius: 1rem;
  box-shadow: var(--site-shadow);
  background: #99e600;
}

.color-input {
  width: 4rem;
  height: 2.5rem;
  padding: 0.2rem;
}

.site-footer {
  background: #1f2933;
  color: rgba(255, 255, 255, 0.72);
}

.site-footer a {
  color: #fff;
}

@media (max-width: 767.98px) {
  .hero {
    min-height: auto;
    padding-top: 7rem;
  }

  .page-section {
    padding: 4rem 0;
  }
}

.text-white-75 {
  color: rgba(255, 255, 255, 0.75) !important;
}