:root {
  --color-bg: #0a0a0a;
  --color-text: #f7f5f0;
  --color-text-dim: #a8a59e;
  --color-accent: #d4cfc1;
  --font-sans: "Manrope", sans-serif;
  --font-serif: "Newsreader", serif;
  --font-mono: "DM Mono", monospace;
  --z-background: -10;
  --z-overlay: -5;
  --z-content: 10;
  --z-header: 20;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Film Grain */
.film-grain {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: var(--z-header);
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Header */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 2.5rem 3rem;
  z-index: var(--z-header);
  pointer-events: none;
  mix-blend-mode: difference;
}

.topbar-left a {
  pointer-events: auto;
}

.mark {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--color-text);
  font-style: italic;
}

.topbar-right {
  text-align: right;
}

.issue {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.issue-meta {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-dim);
}

/* Scroll Progress Bar */
.scroll-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  z-index: 30;
}

.scroll-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  transition: width 0.1s ease-out;
}

/* Slideshow Background */
.slideshow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: var(--z-background);
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 2.5s cubic-bezier(0.4, 0, 0.2, 1), transform 12s linear;
  transform: scale(1.03);
}

.slide.slide-active {
  opacity: 1;
  transform: scale(1);
}

.slideshow-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: linear-gradient(180deg, rgba(10,10,10,0.4) 0%, rgba(10,10,10,0.1) 40%, rgba(10,10,10,0.8) 100%);
  z-index: var(--z-overlay);
  pointer-events: none;
}

/* Minimal Geometric Markings */
.marking {
  position: absolute;
  display: flex;
  align-items: center;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 1s ease 1s, transform 1s ease 1s;
}

.slide-active .marking {
  opacity: 1;
  transform: translateY(0);
}

.mark-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--mark-color);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.2), 0 0 10px var(--mark-color);
}

.mark-line {
  width: 40px;
  height: 1px;
  background-color: rgba(255,255,255,0.4);
  margin-left: 10px;
}

.mark-line.line-right {
  margin-left: 0;
  margin-right: 10px;
  order: -1;
}

.mark-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-left: 10px;
  white-space: nowrap;
}

.mark-label.label-right {
  margin-left: 0;
  margin-right: 10px;
  order: -2;
}

/* Scroll Container */
.scroll-container {
  height: 100vh;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
  position: relative;
  z-index: var(--z-content);
}

.scroll-container::-webkit-scrollbar {
  display: none;
}

.scroll-section {
  height: 100vh;
  width: 100vw;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 5rem 4rem;
  position: relative;
}

/* Typography & Content Blocks */
.content-block {
  max-width: 550px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-section.is-visible .content-block {
  opacity: 1;
  transform: translateY(0);
}

.align-left {
  align-self: flex-start;
}

.align-right {
  align-self: flex-end;
  text-align: right;
}

.align-center {
  align-self: center;
  text-align: center;
}

.eyebrow, .feature-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  display: block;
}

.intro-block h1 {
  font-family: var(--font-sans);
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 200;
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin-bottom: 2rem;
  text-transform: uppercase;
}

.intro-block em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 200;
  text-transform: none;
  letter-spacing: -0.02em;
}

.intro-desc {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.5;
  font-weight: 300;
  color: var(--color-text-dim);
  max-width: 400px;
  margin-bottom: 4rem;
}

.scroll-indicator {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-dim);
}

.scroll-indicator .line {
  width: 40px;
  height: 1px;
  background-color: var(--color-text-dim);
}

.feature-block h2 {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 300;
  font-style: italic;
  line-height: 1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.feature-desc {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-dim);
  max-width: 420px;
}

.align-right .feature-desc {
  margin-left: auto;
}

.align-center .feature-desc {
  margin: 0 auto;
}

/* Teaser Block */
.teaser-section {
  justify-content: center;
}

.teaser-block {
  text-align: center;
  margin: 0 auto;
  max-width: 800px;
}

.coming-soon {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: #c94038;
  margin-bottom: 2rem;
}

.teaser-block h2 {
  font-family: var(--font-sans);
  font-weight: 200;
  font-size: clamp(3.5rem, 8vw, 7rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  margin-bottom: 2rem;
  text-transform: uppercase;
}

.teaser-block em {
  font-family: var(--font-serif);
  font-style: italic;
}

.teaser-desc {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--color-text-dim);
}

@media (max-width: 768px) {
  .scroll-section {
    padding: 3rem 2rem;
  }
  .topbar {
    padding: 1.5rem 2rem;
  }
}