/* Container Queries Demo */
.resizable-container {
  container-type: inline-size;
  container-name: demo-container;
  resize: horizontal;
  overflow: auto;
}

/* Small container (< 350px) */
@container demo-container (max-width: 349px) {
  .card-header-demo {
    flex-direction: column;
    text-align: center;
  }
  .card-actions {
    flex-direction: column;
  }
}

/* Medium container (350px - 549px) */
@container demo-container (min-width: 350px) and (max-width: 549px) {
  .card-header-demo {
    flex-direction: row;
  }
}

/* Large container (550px+) */
@container demo-container (min-width: 550px) {
  .responsive-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-areas:
      "avatar info actions"
      "content content content";
  }
}
            

              /* CSS Tooltips - Advanced Examples */

/* Base Tooltip */
.tooltip {
  position: relative;
  display: inline-block;
  cursor: pointer;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  background: linear-gradient(135deg, #0a0a0a, #1a1a2e);
  color: #ffffff;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.8rem;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  border: 1px solid #00ffff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* Top Position */
.tooltip-top::after {
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
}

.tooltip-top:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Delayed Tooltip */
.tooltip-delay::after {
  transition-delay: 0.5s;
}

/* Bounce Animation */
.tooltip-bounce:hover::after {
  animation: tooltipBounce 0.6s ease;
}

@keyframes tooltipBounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40%, 43% {
    transform: translateX(-50%) translateY(-10px);
  }
}
            

              /* Magic Hover Effects - Advanced Examples */

/* Liquid Morphing Effect */
.liquid-btn {
  background: linear-gradient(45deg, #00ffff, #8b5cf6);
  border-radius: 50px;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.320, 1);
}

.liquid-btn::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(45deg, #ff0080, #00ff41);
  border-radius: 50px;
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.320, 1);
  z-index: -1;
}

.liquid-btn:hover {
  transform: scale(1.1) rotate(2deg);
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 255, 255, 0.4);
}

.liquid-btn:hover::before {
  opacity: 1;
  transform: scale(1.2) rotate(-2deg);
  border-radius: 30px;
}

/* 3D Flip Effect */
.flip-btn {
  perspective: 1000px;
  transform-style: preserve-3d;
  transition: transform 0.6s ease;
}

.flip-btn:hover {
  transform: rotateY(180deg);
}

/* Glitch Effect */
.glitch-btn:hover {
  animation: glitchMain 0.3s ease-in-out infinite;
}

@keyframes glitchMain {
  0%, 100% { transform: translate(0); }
  20% { transform: translate(-1px, 1px); }
  40% { transform: translate(1px, -1px); }
  60% { transform: translate(-1px, -1px); }
  80% { transform: translate(1px, 1px); }
}
            

              /* Fluid Typography - Advanced Examples */

/* Fluid Heading */
.fluid-heading {
  font-size: clamp(1.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Fluid Subheading */
.fluid-subheading {
  font-size: clamp(1rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.2;
}

/* Fluid Body Text */
.fluid-body {
  font-size: clamp(0.9rem, 2vw, 1.2rem);
  line-height: clamp(1.4, 1.5vw, 1.6);
  max-width: 600px;
}

/* Viewport Simulator */
.simulated-viewport {
  width: clamp(320px, 100%, 800px);
  transition: all 0.3s ease;
  border: 2px solid #00ff41;
  padding: 2rem;
}

/* Alternative Approaches */
.calc-approach {
  font-size: calc(1rem + 2vw);
  /* Note: Use clamp() for better control */
}

.media-query-approach {
  font-size: 1rem;
}

@media (min-width: 768px) {
  .media-query-approach {
    font-size: 1.25rem;
  }
}

@media (min-width: 1280px) {
  .media-query-approach {
    font-size: 1.5rem;
  }
}
            

              /* Scroll Snap - Advanced Gallery */

/* Snap Container */
.snap-container {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  gap: 1rem;
  padding: 1rem 0;
}

/* Snap Items */
.snap-item {
  flex: 0 0 280px;
  height: 200px;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  border-radius: 12px;
  background: linear-gradient(135deg, #1a1a2e, #16213e);
  transition: all 0.3s ease;
}

.snap-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(255, 0, 128, 0.2);
}

/* Custom Scrollbar */
.snap-container::-webkit-scrollbar {
  height: 8px;
}

.snap-container::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.snap-container::-webkit-scrollbar-thumb {
  background: #ff0080;
  border-radius: 4px;
}

/* Snap Types */
.mandatory-snap {
  scroll-snap-type: x mandatory;
}

.proximity-snap {
  scroll-snap-type: x proximity;
}

/* Navigation Buttons */
.nav-btn {
  background: transparent;
  border: 1px solid #ff0080;
  color: #ff0080;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
}

.nav-btn:hover:not(:disabled) {
  background: #ff0080;
  color: #0a0a0a;
  box-shadow: 0 0 15px rgba(255, 0, 128, 0.4);
}
            

              /* Dynamic Themes Example */
:root {
  --bg-color: #ffffff;
  --text-color: #000000;
}

[data-theme="dark"] {
  --bg-color: #1a1a1a;
  --text-color: #ffffff;
}

[data-theme="neon"] {
  --bg-color: #0a0a0a;
  --text-color: #00ffff;
}

body {
  background: var(--bg-color);
  color: var(--text-color);
  transition: all 0.3s ease;
}
            

              /* CSS Grid Magic Example */
.grid-container {
  display: grid;
  grid-template-areas:
    "header header"
    "sidebar main"
    "footer footer";
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 200px 1fr;
  min-height: 100vh;
}

.header { grid-area: header; }
.sidebar { grid-area: sidebar; }
.main { grid-area: main; }
.footer { grid-area: footer; }
            

              /* Physics Animations Example */
@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translate3d(0,0,0);
  }
  40%, 43% {
    transform: translate3d(0, -30px, 0);
  }
  70% {
    transform: translate3d(0, -15px, 0);
  }
  90% {
    transform: translate3d(0, -4px, 0);
  }
}

.bounce {
  animation: bounce 1s ease-in-out;
}
            

              /* Advanced Selectors Example */
/* Style form when it has valid inputs */
form:has(input:valid) {
  border-color: green;
}

/* Style form when it has invalid inputs */
form:has(input:invalid) {
  border-color: red;
}

/* Target elements that don't have a specific class */
div:not(.special) {
  opacity: 0.5;
}

/* Modern selector combinations */
input:is(:focus, :hover) {
  outline: 2px solid blue;
}
            

              /* CSS Houdini Example */
/* Register custom property */
@property --gradient-angle {
  syntax: '';
  initial-value: 0deg;
  inherits: false;
}

/* Use custom paint worklet */
.houdini-element {
  background: paint(custom-gradient);
  --gradient-angle: 45deg;
  transition: --gradient-angle 0.3s ease;
}

.houdini-element:hover {
  --gradient-angle: 180deg;
}