/* General Reset */
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: #fff;
  color: #000;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.img-modal {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0; top: 0;
  width: 100%; height: 100%;
  overflow: auto;
  background: rgba(0,0,0,0.8);
}
.img-modal-content {
  display: block;
  margin: 5% auto;
  max-width: 80vw;
  max-height: 80vh;
  border-radius: 8px;
  box-shadow: 0 0 20px #000;
}
.img-modal .close {
  position: absolute;
  top: 30px; right: 50px;
  color: #fff;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  z-index: 10000;
}

/* Header Navigation */
header {
  width: 100%;
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-sizing: border-box;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: black;
  font-weight: 500;
}

@media (max-width: 600px) {
  .main h1 {
    font-size: 1.8em;
  }

  nav a {
    margin-left: 10px;
    font-size: 0.9em;
  }
}

/* Main Text Section */
.main {
  text-align: center;
  padding: 60px 20px 20px;
}

.main h1 {
  font-size: 2.5em;
  margin-bottom: 0.3em;
}

.main p {
  font-size: 1.1em;
  color: #444;
}

/* Image Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  width: 100%;
  max-width: 1000px;
  padding: 40px 20px;
  box-sizing: border-box;
}

.image-box {
  position: relative;
  overflow: hidden;
  width: 100%;
  padding-top: 75%;
  background-color: #f0f0f0;
  border: 1px solid #ddd;
  transition: transform 0.4s ease;
}

.image-box img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.image-box:hover img {
  transform: scale(1.1);
}

/* Diagram Section */
.diagram-box {
  position: absolute;
  /* use a relative width capped at 200px */
  width: 25vw;
  max-width: 200px;
  padding: 10px;
  border: 2px solid #ccc;
  border-radius: 8px;
  background: #f9f9f9;
  text-align: center;
  box-shadow: 0 0 6px rgba(0,0,0,0.05);
}

/* fluid image sizing */
.diagram-box img {
  display: block;
  width: 80%;
  max-width: 100px;
  height: auto;
  margin: 10px auto;
}

/* on very narrow screens, shrink container & image further */
@media screen and (max-width: 480px) {
  .diagram-box {
    width: 40vw;        /* narrower box */
    max-width: 150px;
  }
  .diagram-box img {
    width: 70%;
    max-width: 80px;    /* even smaller images */
  }
}


/* Make SVG scale to phone widths */
svg {
  width: 100%;
  height: auto;
}

/* Base styles for all browsers */
svg path {
  stroke: orange;
  stroke-width: 3;
  fill: none;
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  /* both filter declarations for max compatibility */
  -webkit-filter: drop-shadow(0 0 5px orange);
  filter: drop-shadow(0 0 5px orange);
  opacity: 0.8;
  marker-end: url(#arrowhead);
}

svg text {
  font-size: 12px;
  fill: black;
  writing-mode: vertical-rl;
  text-anchor: middle;
  dominant-baseline: middle;
}

/* Animation class — WebKit + standard */
.animate path {
  -webkit-animation: draw 2s forwards ease-out;
  animation:       draw 2s forwards ease-out;
}

/* WebKit keyframes */
@-webkit-keyframes draw {
  to {
    stroke-dashoffset: 0;
    -webkit-filter: drop-shadow(0 0 8px orange) brightness(1.2);
            filter: drop-shadow(0 0 8px orange) brightness(1.2);
  }
}

/* Standard keyframes */
@keyframes draw {
  to {
    stroke-dashoffset: 0;
    -webkit-filter: drop-shadow(0 0 8px orange) brightness(1.2);
            filter: drop-shadow(0 0 8px orange) brightness(1.2);
  }
}

/* Optional: tweak stroke width on very small phones */
@media screen and (max-width: 480px) {
  svg path {
    stroke-width: 2;
  }
}

/* Steps Section */
.steps-section {
  max-width: 900px;
  margin: 80px auto;
  padding: 0 20px;
  perspective: 1200px;
}

.steps-title {
  font-size: 2em;
  font-weight: 700;
  margin-bottom: 40px;
  text-align: center;
}

.step {
  background-color: #f9f9f9;
  border-radius: 10px;
  margin-bottom: 30px;
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform 0.6s ease;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.step.open {
  transform: rotateX(-10deg) translateY(-5px);
}

.step-header {
  display: flex;
  align-items: center;
  padding: 20px;
  cursor: pointer;
  background: #ffffff;
  z-index: 2;
  position: relative;
  transform-style: preserve-3d;
}

.step-number {
  min-width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: black;
  color: white;
  text-align: center;
  line-height: 40px;
  font-weight: bold;
  font-size: 1.1em;
  margin-right: 20px;
}

.step-content h3 {
  margin: 0 0 8px;
  font-size: 1.2em;
}

.step-content p {
  margin: 0;
  color: #444;
  line-height: 1.6;
}

.step-drawer {
  height: 0;
  overflow: hidden;
  transition: height 0.6s ease;
}

.step.open .step-drawer {
  height: auto;
}

/* Carousel Styling */
.carousel {
  position: relative;
  width: 100%;
  height: 300px;
}

.slides {
  display: flex;
  transition: transform 0.4s ease;
  height: 100%;
}

.slide {
  flex: 0 0 100%;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  border-top: 1px solid #ddd;
}

.dots {
  position: absolute;
  bottom: 15px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(175, 53, 53, 0.767);
  cursor: pointer;
  transition: background 0.3s;
}

.dot.active {
  background: black;
}

/* Code Highlighting */
.drawer-content {
  overflow: visible !important;
  max-height: none !important;
  transform: none !important;
}
pre[class*="language-"] {
  background: #1e1e1e;
  color: #dcdcdc;
  font-family: 'Fira Code', 'Courier New', monospace;
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  line-height: 1.6;
  margin: 0;
  font-size: 0.9rem;
  width: 100%;
  box-sizing: border-box;
  max-height: 400px;
}

code[class*="language-"] {
  display: block;
  width: 100%;
}

@media (max-width: 768px) {
  body {
    padding: 0;
    overflow-x: hidden; /* Prevent horizontal scroll */
  }

  header {
    flex-direction: column;
    align-items: flex-start;
    padding: 15px 20px;
  }

  nav a {
    margin: 5px 0;
    font-size: 0.9rem;
  }

  .main h1 {
    font-size: 1.8em;
  }

  .main p {
    font-size: 1em;
  }

  .gallery {
    grid-template-columns: 1fr;
    padding: 20px;
  }

  .carousel {
    height: 200px; /* Shrink carousel height on small screens */
  }

  .steps-section {
    margin: 40px auto;
    padding: 0 10px;
  }

  .step-content p {
    font-size: 0.95em;
  }

  .diagram-box {
    width: 90%;
    padding: 10px;
    position: relative; /* remove absolute to prevent overflow */
    margin: 20px auto;
  }

  .diagram-box img {
    width: 80%;
  }

  svg text {
    font-size: 10px;
  }

  .step-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .step-number {
    margin-bottom: 10px;
  }

  .img-modal-content {
    max-width: 90vw;
    max-height: 70vh;
  }
}