/* positions.css: Styles for the CSS position property demo page */

body {
  background: linear-gradient(120deg, #f0f4f8 0%, #e0e7ef 100%);
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  padding: 0;
  color: #222;
}

.container {
  max-width: 900px;
  margin: 40px auto;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 4px 32px 0 rgba(52, 152, 219, 0.10);
  padding: 32px 24px 24px 24px;
}

h1 {
  text-align: center;
  color: #3498db;
  margin-bottom: 16px;
}

.theory-section, .code-section, .demo-section {
  margin-bottom: 32px;
  padding: 18px 20px;
  border-radius: 12px;
  background: #f8fafc;
  box-shadow: 0 2px 8px 0 rgba(52, 152, 219, 0.04);
}

.code-section {
  background: #23272e;
  color: #f8f8f2;
}

/* Theory Diagrams */
.theory-diagrams {
  display: flex;
  gap: 1.2rem;
  margin: 1.5rem 0 2rem 0;
  flex-wrap: wrap;
}
.diagram-card {
  background: #f6f8fa;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(52,152,219,0.08);
  padding: 0.7rem 1.2rem 1.2rem 1.2rem;
  min-width: 110px;
  text-align: center;
  flex: 1 1 120px;
}
.diagram-label {
  font-size: 1.05rem;
  font-weight: 600;
  color: #3498db;
  margin-bottom: 0.5rem;
  display: block;
}
.diagram-static, .diagram-relative, .diagram-absolute, .diagram-fixed, .diagram-sticky {
  width: 60px; height: 40px;
  margin: 0 auto;
  border-radius: 6px;
  background: #e1eafc;
  position: relative;
}
.diagram-static::after {
  content: '';
  display: block;
  width: 30px; height: 18px;
  background: #3498db;
  border-radius: 4px;
  margin: 10px auto 0 auto;
}
.diagram-relative::after {
  content: '';
  display: block;
  width: 30px; height: 18px;
  background: #27ae60;
  border-radius: 4px;
  margin: 10px 0 0 15px;
  position: relative;
  left: 10px;
}
.diagram-absolute::after {
  content: '';
  display: block;
  width: 30px; height: 18px;
  background: #e67e22;
  border-radius: 4px;
  margin: 0;
  position: absolute;
  top: 5px; right: 5px;
}
.diagram-fixed::after {
  content: '';
  display: block;
  width: 30px; height: 18px;
  background: #8e44ad;
  border-radius: 4px;
  margin: 0;
  position: absolute;
  top: 5px; left: 5px;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px #8e44ad33;
}
.diagram-sticky::after {
  content: '';
  display: block;
  width: 30px; height: 18px;
  background: #f39c12;
  border-radius: 4px;
  margin: 0;
  position: absolute;
  top: 0; left: 15px;
  box-shadow: 0 2px 8px #f39c1233;
}

/* Demos Layout */
.demo-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.demo-card {
  background: #fafdff;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(52,152,219,0.10);
  padding: 1.2rem 1.2rem 1.5rem 1.2rem;
  min-width: 220px;
  flex: 1 1 260px;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 1rem;
}
.demo-label {
  font-size: 1.1rem;
  font-weight: 700;
  color: #3498db;
  margin-bottom: 0.5rem;
}
.demo-box {
  background: #e1eafc;
  border-radius: 8px;
  padding: 1.1rem 1.5rem;
  font-size: 1.08rem;
  margin-bottom: 0.7rem;
  min-width: 120px;
  text-align: center;
}
.demo-desc {
  font-size: 0.98rem;
  color: #555;
  margin-top: 0.5rem;
  text-align: center;
}

/* Static Demo */
.static-demo .demo-box {
  background: #e1eafc;
}

/* Relative Demo */
.relative-demo .demo-box {
  background: #d4efdf;
  position: relative;
  left: 18px;
  top: 8px;
}

/* Absolute Demo */
.absolute-demo {
  position: relative;
}
.absolute-demo .demo-box {
  background: #fdebd0;
}
.absolute-demo .overlay-btn {
  margin: 0.5rem 0 0.2rem 0;
  padding: 0.4rem 1.1rem;
  border-radius: 6px;
  border: none;
  background: #3498db;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.absolute-demo .overlay-btn:focus,
.absolute-demo .overlay-btn:hover {
  background: #217dbb;
  outline: 2px solid #217dbb;
}
.absolute-demo .overlay {
  display: none;
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(52,152,219,0.15);
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  z-index: 2;
  flex-direction: column;
}
.absolute-demo .overlay span {
  background: #3498db;
  color: #fff;
  padding: 0.7rem 1.2rem;
  border-radius: 8px;
  font-size: 1.05rem;
  margin-bottom: 0.7rem;
}
.absolute-demo .close-overlay {
  background: #e74c3c;
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 2rem; height: 2rem;
  font-size: 1.3rem;
  cursor: pointer;
  transition: background 0.2s;
}
.absolute-demo .close-overlay:focus,
.absolute-demo .close-overlay:hover {
  background: #c0392b;
  outline: 2px solid #c0392b;
}

/* Absolute Demo Improvements */
.abs-parent {
  position: relative;
  background: #f6f8fa;
  border: 2px solid #b2bec3;
  border-radius: 8px;
  margin: 0.7rem 0 0.3rem 0;
  min-height: 70px;
  width: 210px;
  box-sizing: border-box;
  display: inline-block;
}
.abs-parent-label {
  position: absolute;
  left: 10px; top: 6px;
  font-size: 0.92rem;
  color: #636e72;
  background: #fff;
  padding: 0 6px;
  z-index: 2;
  border-radius: 4px;
}
.abs-parent-rel {
  position: relative;
}
.abs-parent-static {
  position: static;
}
.abs-child {
  position: absolute;
  padding: 0.5rem 1.1rem;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  box-shadow: 0 2px 8px #e67e2244;
}
.abs-child-1 {
  background: #ffd200;
  color: #222;
  top: 12px;
  right: 12px;
}
.abs-child-2 {
  background: #ff9800;
  color: #fff;
  top: 12px;
  left: 12px;
}
.abs-desc {
  font-size: 0.95rem;
  color: #888;
  margin-bottom: 0.7rem;
  margin-top: 0.1rem;
  text-align: left;
}

/* Fixed Demo */
.fixed-demo .demo-box {
  background: #e8daef;
}
.fixed-demo .notify-btn {
  margin: 0.5rem 0 0.2rem 0;
  padding: 0.4rem 1.1rem;
  border-radius: 6px;
  border: none;
  background: #8e44ad;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.fixed-demo .notify-btn:focus,
.fixed-demo .notify-btn:hover {
  background: #5e3370;
  outline: 2px solid #5e3370;
}
.fixed-demo .fixed-notification {
  display: none;
  position: fixed;
  top: 1.5rem; right: 1.5rem;
  background: #8e44ad;
  color: #fff;
  padding: 1rem 1.5rem;
  border-radius: 10px;
  box-shadow: 0 2px 12px #8e44ad33;
  z-index: 100;
  align-items: center;
  gap: 1rem;
  flex-direction: row;
}
.fixed-demo .close-notify {
  background: #e74c3c;
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 2rem; height: 2rem;
  font-size: 1.3rem;
  cursor: pointer;
  transition: background 0.2s;
}
.fixed-demo .close-notify:focus,
.fixed-demo .close-notify:hover {
  background: #c0392b;
  outline: 2px solid #c0392b;
}

/* Sticky Demo */
.sticky-demo {
  max-height: 320px;
  overflow-y: auto;
  background: #f9e79f;
  position: relative;
}
.sticky-scroll-content {
  padding: 0.7rem 0.5rem 1.2rem 0.5rem;
}
.sticky-header {
  position: sticky;
  top: 0;
  background: #f39c12;
  color: #fff;
  padding: 10px 0;
  text-align: center;
  font-weight: bold;
  z-index: 10;
  border-radius: 8px 8px 0 0;
  box-shadow: 0 2px 8px #f39c1233;
  transition: box-shadow 0.2s, background 0.2s;
}
.sticky-header.stuck {
  background: #d35400;
  box-shadow: 0 4px 16px #d3540033;
}

.sticky-demo .demo-box {
  background: #f7dc6f;
}


/* Tooltip Demo */
.tooltip-demo {
  position: relative;
  outline: none;
}
.tooltip-demo .tooltip-btn {
  margin: 0.5rem 0 0.2rem 0;
  padding: 0.4rem 1.1rem;
  border-radius: 6px;
  border: none;
  background: #23272e;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.tooltip-demo .tooltip-btn:focus,
.tooltip-demo .tooltip-btn:hover {
  background: #444b58;
  outline: 2px solid #23272e;
}
.tooltip-demo .tooltip {
  position: absolute;
  bottom: 120%; left: 50%;
  transform: translateX(-50%);
  background: #23272e;
  color: #fff;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.98rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  z-index: 3;
  white-space: nowrap;
}
.tooltip-demo:focus-within .tooltip,
.tooltip-demo:hover .tooltip {
  opacity: 1;
  pointer-events: auto;
}

/* Z-Index Demo */
.zindex-demo .z-stack {
  position: relative;
  width: 120px; height: 90px;
  margin: 0 auto 0.7rem auto;
}
.zindex-demo .z-box {
  position: absolute;
  width: 80px; height: 40px;
  left: 20px;
  border-radius: 8px;
  color: #fff;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.85;
  transition: box-shadow 0.2s, opacity 0.2s;
  cursor: pointer;
}
.zindex-demo .z1 {
  top: 0;
  background: #3498db;
  z-index: 1;
}
.zindex-demo .z2 {
  top: 20px;
  background: #e67e22;
  z-index: 2;
}
.zindex-demo .z3 {
  top: 40px;
  background: #8e44ad;
  z-index: 3;
}
.zindex-demo .z-box:hover {
  box-shadow: 0 0 0 4px #fff, 0 0 0 8px #3498db33;
  opacity: 1;
  z-index: 99;
  outline: 2px solid #ffd200;
}

/* Code Block Styling */
.code-block {
  background: #23272e;
  color: #f8f8f2;
  border-radius: 8px;
  padding: 1rem 1.2rem;
  margin: 1.2rem 0;
  overflow-x: auto;
  font-size: 1.01rem;
}
.code-block code {
  font-family: 'Fira Mono', 'Consolas', monospace;
  color: #f8f8f2;
}

/* Back Button */
.back-btn {
  display: inline-block;
  margin: 2.5rem 0 0 0;
  padding: 0.6rem 1.3rem;
  background: linear-gradient(90deg, #3498db 60%, #8e44ad 100%);
  color: #fff;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  font-size: 1.08rem;
  box-shadow: 0 2px 8px #3498db22;
  transition: background 0.2s, box-shadow 0.2s;
}
.back-btn:focus, .back-btn:hover {
  background: linear-gradient(90deg, #217dbb 60%, #5e3370 100%);
  box-shadow: 0 4px 16px #8e44ad33;
  outline: 2px solid #217dbb;
}

/* Accessibility */
:focus {
  outline: 2px solid #3498db;
  outline-offset: 2px;
}

@media (max-width: 900px) {
  .demo-row, .theory-diagrams {
    flex-direction: column;
    gap: 1.2rem;
  }
  .demo-card, .diagram-card {
    min-width: 0;
    width: 100%;
  }
}