/* Theory images in grid.html */
.theory-img {
  max-width: 100%;
  margin: 1.5rem auto;
  display: block;
  box-shadow: 0 2px 12px #b3c6ff55;
  border-radius: 10px;
}
/* CSS Grid Demo Styles for grid.html */

html {
  box-sizing: border-box;
  font-size: 18px;
  scroll-behavior: smooth;
}
*, *:before, *:after {
  box-sizing: inherit;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f8fafc;
  color: #222;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.grid-header {
  background: linear-gradient(90deg, #4f8cff 0%, #38b2ac 100%);
  color: #fff;
  padding: 2rem 1rem 1rem 1rem;
  text-align: center;
  box-shadow: 0 2px 8px rgba(80,120,200,0.08);
}
.grid-header h1 {
  margin: 0 0 0.5rem 0;
  font-size: 2.2rem;
  letter-spacing: 1px;
}
.grid-header .subtitle {
  font-size: 1.1rem;
  color: #e0f7fa;
}

.back-nav {
  margin: 1rem 0 0 1rem;
}
.back-btn {
  display: inline-block;
  background: #fff;
  color: #3182ce;
  border: 2px solid #3182ce;
  border-radius: 24px;
  padding: 0.5em 1.2em;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 8px rgba(49,130,206,0.08);
}
.back-btn:hover, .back-btn:focus {
  background: #3182ce;
  color: #fff;
  outline: 2px solid #4f8cff;
  outline-offset: 2px;
}

.grid-main {
  flex: 1 1 auto;
  max-width: 900px;
  margin: 2rem auto 0 auto;
  padding: 0 1rem 2rem 1rem;
}

.theory, .properties {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(80,120,200,0.07);
  margin-bottom: 2rem;
  padding: 1.5rem 1.2rem;
}
.theory h2, .properties h2 {
  margin-top: 0;
  color: #2563eb;
}

.property-list {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}
.property {
  flex: 1 1 350px;
  min-width: 300px;
  background: #f1f5fb;
  border-radius: 10px;
  margin-bottom: 1.5rem;
  padding: 1rem 1rem 0.5rem 1rem;
  box-shadow: 0 1px 6px rgba(80,120,200,0.05);
}
.property h3 {
  margin-top: 0;
  color: #2563eb;
  font-size: 1.1rem;
}

.demo-block {
  margin: 1.2rem 0 1.5rem 0;
}
.demo-block pre {
  background: #23272e;
  color: #e0e6f0;
  border-radius: 8px;
  padding: 0.7em 1em;
  font-size: 0.98em;
  overflow-x: auto;
  margin-top: 0.7em;
}
.demo-block code {
  font-family: 'Fira Mono', 'Consolas', monospace;
}

/* Grid Demo Styles */
.demo-grid {
  display: grid;
  background: #e3eefd;
  border-radius: 8px;
  padding: 1em;
  margin-bottom: 0.5em;
  gap: 10px;
  min-height: 60px;
}
.demo-grid > div{
  background: #4f8cff;
  color: #fff;
  font-weight: 600;
  text-align: center;
  border-radius: 6px;
  padding: 0.7em 0.3em;
  font-size: 1em;
  box-shadow: 0 1px 4px rgba(80,120,200,0.08);
  transition: background 0.2s, color 0.2s;
}
.area-grid .header {
  background: #2563eb;
}
.area-grid .sidebar {

  background: #38b2ac;
}
.area-grid .main {
  background:rgb(5, 36, 95);
}
.area-grid .footer {
  background: #2d3748;
}

/* Individual Demo Layouts */
.basic-grid {
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.columns-rows-grid {
  grid-template-columns: 120px 1fr 2fr;
  grid-template-rows: 60px 60px;
  gap: 10px;
}
.gap-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 24px 8px;
}
.lines-grid {
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 50px 50px;
  gap: 8px;
}
.lines-grid .span2 {
  grid-column: 1 / span 2;
}
.lines-grid .row-span {
  grid-row: 1 / span 2;
}
.area-grid {
  grid-template-areas:
    "header header"
    "sidebar main"
    "footer footer";
  grid-template-columns: 120px 1fr;
  grid-template-rows: 50px 120px 40px;
  gap: 8px;
}
.area-grid .header { grid-area: header; }
.area-grid .sidebar { grid-area: sidebar; }
.area-grid .main { grid-area: main; }
.area-grid .footer { grid-area: footer; }
.flexible-grid {
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 12px;
}
.align-grid {
  grid-template-columns: repeat(2, 120px);
  grid-template-rows: repeat(2, 60px);
  justify-items: end;
  align-items: center;
  justify-content: space-between;
  align-content: space-around;
  gap: 10px;
}
.intrinsic-grid {
  grid-template-columns: min-content max-content;
  gap: 10px;
}
/* Explicit/Implicit Grid Notice Paragraph */
.explicit-implicit-notice {
  margin-top: 1em;
  font-size: 0.98em;
}

/* Responsive Grid Example Demo */
.responsive-demo-grid {
  grid-template-columns: repeat(4, minmax(60px, 1fr));
  grid-template-rows: 40px 40px;
}
/* Explicit vs. Implicit Grid Section Layout */
.explicit-implicit-grids {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}
.explicit-grid-block, .implicit-grid-block {
  flex: 1;
  min-width: 220px;
}
.grid-block-title {
  margin-bottom: 0.5em;
}
.explicit-grid {
  grid-template-columns: 100px 100px;
  gap: 8px;
}
.implicit-grid {
  grid-template-columns: 100px 100px;
  grid-auto-rows: 40px;
  gap: 8px;
}

/* Responsive adjustments */
@media (max-width: 700px) {
  .grid-main {
    padding: 0 0.2rem 2rem 0.2rem;
  }
  .property-list {
    flex-direction: column;
    gap: 1.2rem;
  }
  .property {
    min-width: 0;
  }
}

@media (max-width: 500px) {
  .grid-header h1 {
    font-size: 1.2rem;
  }
  .grid-main {
    margin-top: 0.5rem;
  }
  .theory, .properties {
    padding: 0.7rem 0.3rem;
  }
}

.grid-footer {
  background: #23272e;
  color: #e0e6f0;
  text-align: center;
  padding: 1.2rem 0 1rem 0;
  font-size: 1rem;
  border-top-left-radius: 16px;
  border-top-right-radius: 16px;
  margin-top: 2rem;
  box-shadow: 0 -2px 8px rgba(80,120,200,0.08);
}
.grid-footer a {
  color: #90cdf4;
  text-decoration: underline;
  transition: color 0.2s;
}
.grid-footer a:hover, .grid-footer a:focus {
  color: #fff;
  outline: 2px solid #4f8cff;
  outline-offset: 2px;
}