@import "https://unpkg.com/open-props";

:root {
  --slide-bg: var(--gray-12);
  --slide-text: var(--gray-1);
  --slide-accent: var(--green-5);
  --slide-secondary: var(--blue-5);
  --slide-tertiary: var(--purple-5);
  --gradient-start: var(--green-6);
  --gradient-end: var(--blue-6);

  --slide-transition-duration: 0.6s;
  --slide-transition-easing: cubic-bezier(0.65, 0, 0.35, 1);
  --content-stagger-duration: 0.1s;

  --slide-min-height: 100vh;
  --slide-padding: 3rem;
  --slide-max-width: 1000px;

  --progress-height: 3px;
  --progress-color: var(--slide-accent);
  --progress-bg: var(--gray-9);

  --code-bg: var(--gray-11);
  --code-font: "Fira Code", "SF Mono", "Monaco", monospace;

  --nav-size: 56px;
  --nav-icon-color: var(--gray-5);
  --nav-hover-color: var(--slide-accent);

  --glow-color: rgba(127, 255, 212, 0.15);
}

.light {
  --slide-bg: var(--gray-1);
  --slide-text: var(--gray-12);
  --slide-accent: var(--green-7);
  --slide-secondary: var(--blue-7);
  --gradient-start: var(--green-5);
  --gradient-end: var(--blue-5);
  --code-bg: var(--gray-2);
  --nav-icon-color: var(--gray-6);
  --glow-color: rgba(0, 100, 200, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: var(--slide-bg);
}

.slideshow {
  background: var(--slide-bg);
  color: var(--slide-text);
  min-height: 100vh;
  overflow: hidden;
  position: relative;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  transition: background 0.4s ease;
}

.slideshow::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 20%, var(--glow-color) 0%, transparent 50%),
    radial-gradient(
      ellipse at 80% 80%,
      rgba(100, 100, 255, 0.08) 0%,
      transparent 50%
    );
  pointer-events: none;
  z-index: 1;
}

.slide-container {
  display: flex;
  height: 100vh;
  transition: transform var(--slide-transition-duration)
    var(--slide-transition-easing);
  will-change: transform;
}

.slide {
  min-width: 100vw;
  min-height: 100vh;
  padding: var(--slide-padding);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  flex-shrink: 0;
}

.slide-content {
  /* max-width: var(--slide-max-width); */
  /* width: 100%; */
  position: relative;
  z-index: 2;
  max-height: 85vh;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.slide-content::-webkit-scrollbar {
  width: 6px;
}

.slide-content::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

.slide-content::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
}

.slide-content::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

.slide-content > * {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.6s var(--slide-transition-easing) forwards;
}

.slide-content > *:nth-child(1) {
  animation-delay: 0.1s;
}
.slide-content > *:nth-child(2) {
  animation-delay: 0.2s;
}
.slide-content > *:nth-child(3) {
  animation-delay: 0.3s;
}
.slide-content > *:nth-child(4) {
  animation-delay: 0.4s;
}
.slide-content > *:nth-child(5) {
  animation-delay: 0.5s;
}
.slide-content > *:nth-child(6) {
  animation-delay: 0.6s;
}
.slide-content > *:nth-child(7) {
  animation-delay: 0.7s;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  margin-bottom: 0.5rem;
  background: linear-gradient(
    135deg,
    var(--gradient-start),
    var(--gradient-end)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.slide-subtitle {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  margin-bottom: 2rem;
  opacity: 0.85;
  font-weight: 500;
  color: var(--slide-secondary);
}

.slide-text {
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  text-align: left;
  max-width: 800px;
}

/* Centered text for title slides */
.slide-text.centered {
  text-align: center;
  max-height: none;
  overflow: visible;
}

.slide-text h2 {
  font-size: 1.8rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--slide-accent);
}

.slide-text h3 {
  font-size: 1.3rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--slide-secondary);
}

.slide-text p {
  margin-bottom: 1rem;
}

.slide-text ul,
.slide-text ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.slide-text li {
  margin-bottom: 0.5rem;
}

.slide-text table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.slide-text th,
.slide-text td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-7);
  text-align: left;
}

.slide-text th {
  background: var(--gray-10);
  font-weight: 600;
}

.slide-text blockquote {
  border-left: 4px solid var(--slide-accent);
  padding-left: 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
  opacity: 0.9;
}

.slide-text a {
  color: var(--slide-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.slide-text a:hover {
  border-bottom-color: var(--slide-accent);
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: var(--progress-height);
  background: linear-gradient(
    90deg,
    var(--gradient-start),
    var(--gradient-end)
  );
  transition: width var(--slide-transition-duration)
    var(--slide-transition-easing);
  z-index: 100;
  box-shadow: 0 0 10px var(--progress-color);
}

.progress-bg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--progress-height);
  background: var(--progress-bg);
  z-index: 99;
}

.nav-prev,
.nav-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: var(--nav-size);
  height: var(--nav-size);
  color: var(--nav-icon-color);
  cursor: pointer;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  font-size: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  transition: all 0.3s var(--slide-transition-easing);
  opacity: 0.6;
}

.nav-prev:hover,
.nav-next:hover {
  color: var(--nav-hover-color);
  opacity: 1;
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 0 20px var(--glow-color);
}

.nav-prev {
  left: 1.5rem;
}

.nav-next {
  right: 1.5rem;
}

.nav-prev:disabled,
.nav-next:disabled {
  opacity: 0.2;
  cursor: not-allowed;
  transform: translateY(-50%);
}

.overview .nav-prev,
.overview .nav-next {
  display: none;
}

.slide-container.overview {
  flex-wrap: wrap;
  height: auto;
  min-height: 100vh;
}

.slide-container.overview .slide {
  min-width: 33.333vw;
  min-height: 50vh;
  cursor: pointer;
  transition: all 0.3s ease;
}

.slide-container.overview .slide:hover {
  transform: scale(1.02);
  z-index: 10;
}

.slide-container.overview .slide.active {
  outline: 3px solid var(--slide-accent);
  box-shadow: 0 0 30px var(--glow-color);
}

.slide-container.overview .slide-content {
  transform: scale(0.7);
}

.speaker-notes {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, var(--gray-11), rgba(30, 30, 40, 0.95));
  backdrop-filter: blur(20px);
  color: var(--gray-2);
  padding: 1.5rem 2rem;
  max-height: 25vh;
  overflow-y: auto;
  z-index: 40;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.speaker-notes strong {
  color: var(--slide-accent);
  margin-right: 0.5rem;
}

pre {
  font-family: var(--code-font);
  background: var(--gray-10);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  text-align: left;
  font-size: 0.9rem;
  line-height: 1.6;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.3);
}

code {
  font-family: var(--code-font);
  background: var(--gray-10);
  border-radius: 4px;
  padding: 0.15rem 0.4rem;
  font-size: 0.9em;
  color: var(--slide-accent);
}

pre code {
  background: transparent;
  padding: 0;
  color: var(--gray-2);
}

/* Prism overrides for better contrast */
.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
  color: var(--gray-6);
}

.token.punctuation {
  color: var(--gray-4);
}

.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol,
.token.deleted {
  color: var(--orange-4);
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
  color: var(--green-4);
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
  color: var(--blue-4);
}

.token.atrule,
.token.attr-value,
.token.keyword {
  color: var(--purple-4);
}

.token.function,
.token.class-name {
  color: var(--yellow-4);
}

.token.regex,
.token.important,
.token.variable {
  color: var(--red-4);
}

.control-bar {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.75rem;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(15px);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  z-index: 30;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.control-btn {
  background: transparent;
  border: none;
  color: var(--gray-4);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.control-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--slide-accent);
  transform: translateY(-2px);
}

.control-btn:active {
  transform: translateY(0);
}

.demo-counter {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  margin: 2rem 0;
  background: var(--code-bg);
  padding: 1.5rem 2rem;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.demo-counter button {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--slide-accent);
  background: transparent;
  color: var(--slide-accent);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.demo-counter button:hover {
  background: var(--slide-accent);
  color: var(--slide-bg);
  transform: scale(1.1);
}

.demo-counter span {
  font-size: 1.8rem;
  font-weight: 700;
  min-width: 100px;
}

.demo-counter p {
  margin: 0;
  opacity: 0.7;
  font-size: 0.9rem;
}

.cta-btn {
  display: inline-block;
  margin-top: 2rem;
  margin-bottom: 5rem;
  padding: 1rem 2.5rem;
  background: linear-gradient(
    135deg,
    var(--gradient-start),
    var(--gradient-end)
  );
  color: white;
  text-decoration: none;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(100, 200, 150, 0.3);
}

.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(100, 200, 150, 0.4);
}

.slide-number {
  position: fixed;
  bottom: 1.5rem;
  right: 2rem;
  font-size: 0.9rem;
  color: var(--gray-6);
  z-index: 25;
  font-family: var(--code-font);
}

@media (max-width: 768px) {
  :root {
    --slide-padding: 1.5rem;
    --nav-size: 44px;
  }

  .slide-title {
    font-size: 2rem;
  }

  .slide-text {
    font-size: 0.95rem;
  }

  .slide-text h2 {
    font-size: 1.4rem;
  }

  .nav-prev,
  .nav-next {
    width: 44px;
    height: 44px;
    font-size: 1.4rem;
  }

  .nav-prev {
    left: 0.75rem;
  }

  .nav-next {
    right: 0.75rem;
  }

  .control-bar {
    padding: 0.5rem 0.8rem;
    gap: 0.4rem;
    bottom: 1rem;
  }

  .control-btn {
    font-size: 1rem;
    padding: 0.4rem 0.6rem;
  }

  .slide-container.overview .slide {
    min-width: 50vw;
    min-height: 33.333vh;
  }

  pre {
    font-size: 0.8rem;
    padding: 1rem;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  .slide,
  .progress-bar,
  .slide-container,
  .slide-content > * {
    transition-duration: 0s;
    animation-duration: 0s;
    animation-delay: 0s;
    opacity: 1;
    transform: none;
  }
}

.nav-prev:focus,
.nav-next:focus,
.control-btn:focus {
  outline: 2px solid var(--slide-accent);
  outline-offset: 3px;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading {
  animation: pulse 1.5s ease-in-out infinite;
}