@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400..900;1,400..900&family=Roboto&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Lato:wght@400;700&display=swap');

:root {
  --color-bg: #f8f8f1;
  --color-fg: #181818;
  --color-title: #d65b3d;
  --color-nav-link: #4a4a4a;
  --color-nav-link-hover: #d65b3d;
  --header__height: 5rem;

  --font-size-s: 0.85rem;
  --font-size-xl: 3.5rem;
  --font-size-xxl: 5.5rem;
  --spacing-m: 2rem;
  --spacing-l: 5rem;
}

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

html, body {
  height: 100%;
  background: transparent;
  font-family: 'Lato', sans-serif;
  color: var(--color-fg);
  overflow-x: hidden;
}

/* Ribbon Canvas */
#ribbon-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}
#interaction-instruction {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: "Noto Sans", sans-serif;
  font-size: 1rem;
  color: rgb(168, 168, 168);

  z-index: 1000;
  opacity: 1;
  transition: opacity 1s ease;
}


/* Navbar */
header {
  background: linear-gradient(to bottom, #f38e5cbe, rgba(0, 0, 0, 0));
  height: var(--header__height);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
}

.main__nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem var(--spacing-m);
}

.main__nav-bar ul {
  display: flex;
  gap: var(--spacing-l);
  list-style: none;
}

.main__nav-title li a,
.main__nav-list li a {
  font-weight: 700;
  font-size: var(--font-size-s);
  text-decoration: none;
  color: var(--color-nav-link);
  transition: color 0.3s;
}

.main__nav-title li a:hover,
.main__nav-list li a:hover {
  color: var(--color-nav-link-hover);
}

.main__nav-ham {
  display: none;
}

/* Bottom-left title */
#title-section {
  position: fixed;
  bottom: 10rem;
  left: 10rem;
  z-index: 10;
}

.gestural-title {
  font-size: 5rem;
  color: var(--color-title);
  font-family: 'Playfair Display', serif;
  /* font-weight: 100; */
  line-height: 1.1;
}

/* Right-side number links */
#catalogue-links {
  position: fixed;
  top: 50%;
  right: 5rem;
  transform: translateY(-50%);
  z-index: 10;
}

#catalogue-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  font-family: 'Lato', sans-serif;
  font-size: 1rem;
  font-weight: 500;
}

#catalogue-links ul li a {
  text-decoration: none;
  color: var(--color-nav-link);
  transition: color 0.3s;
}

#catalogue-links ul li a:hover {
  color: var(--color-nav-link-hover);
}

/* Responsive */
@media (max-width: 768px) {
  .main__nav-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .main__nav-list {
    flex-direction: column;
    gap: 1rem;
  }

  #title-section {
    left: 2rem;
  }

  #catalogue-links {
    right: 2rem;
  }

  .gestural-title {
    font-size: 3rem;
  }
}