.vertical-separator {
  border-left: solid 1px var(--color-contrast-muted);
  position: relative;
}

.vertical-separator::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -1px; /* aligns glow with the border */
  width: 2px;
  background: var(--color-contrast-muted);
  filter: blur(8px);
  mix-blend-mode: screen; /* additive light */
  opacity: 0.9;
  pointer-events: none;
}

.horizontal-separator {
  border-bottom: solid 1px var(--color-contrast-muted);
  position: relative;
}

.horizontal-separator::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--color-contrast-muted);
  filter: blur(8px);
  mix-blend-mode: screen; /* additive light */
  opacity: 0.9;
  pointer-events: none;
}

/* BUTTON */
.button-style {
  appearance: none;
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-contrast-cool);
  border-radius: var(--radius-md);
  box-sizing: border-box;
  color: var(--color-text);
  cursor: pointer;
  display: inline-block;
  font-size: var(--fs-300);
  font-weight: var(--fw-md);
  padding: var(--space-1) var(--space-2);
  position: relative;
  transition: background-color 0.2s cubic-bezier(0.3, 0, 0.5, 1);
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  vertical-align: middle;
  white-space: nowrap;
  word-wrap: break-word;
}

.button-style:hover {
  background-color: var(--color-contrast-muted);
  text-decoration: none;
  transition-duration: 0.1s;
}

.button-style:disabled {
  background-color: #fafbfc;
  border-color: rgba(27, 31, 35, 0.15);
  color: #959da5;
  cursor: default;
}

.button-style:active {
  background-color: var(--color-bg-alt);
  box-shadow: rgba(225, 228, 232, 0.2) 0 1px 0 inset;
  transition: none 0s;
}

.button-style:focus {
  outline: 1px transparent;
}

.button-style:before {
  display: none;
}

.fade-section {
  opacity: 0;
  transition: opacity 1s ease-out;
}

.fade-section.visible {
  opacity: 1;
}

/* Sections */
.header-container {
  width: min(1200px, 90%);
  margin: auto;
  padding: var(--space-4);
  text-align: center;
}

.header-container h1 {
  padding: var(--space-4);
}

.header-container p {
  padding: var(--space-4);
}

.header-container h4 {
  padding: var(--space-4);
}

.section-container {
  width: min(1200px, 90%);
  margin: auto;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.section-container h1 {
  padding: var(--space-4);
}

/* Navigation Bar */
.nav-bar {
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  border-bottom: solid 1px var(--color-contrast-muted);
  backdrop-filter: blur(4px);
}

.nav-bar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--color-contrast-muted);
  filter: blur(8px);
  mix-blend-mode: screen; /* additive light */
  opacity: 0.9;
  pointer-events: none;
}

.nav-bar-toggle {
  display: none;
}

.nav-link {
  position: relative;
  padding: var(--space-2);
  transition: background 0.3s ease;
}

/* For projects page */
.nav-link-active {
  position: relative;
  padding: var(--space-2);
  transition: background 0.3s ease;
  background: var(--color-contrast-muted);
}

.nav-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0%;
  background: var(--color-contrast-muted);
  backdrop-filter: blur(6px);
  transition: width 0.4s ease;
  z-index: -1;
}

.nav-link.active {
  background: var(--color-contrast-muted);
}

/* CARDS */
.card-container {
  padding: var(--space-2);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-contrast-cool);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.card-content {
  padding: var(--space-4);
}

.card-title {
  font-size: var(--fs-600);
  margin-bottom: var(--space-2);
}

.card-desc {
  font-size: var(--fs-300);
  color: var(--color-text-muted);
}

.project-container {
  width: min(1200px, 90%);
  margin: auto;
  padding: var(--space-8);
  overflow: visible;
}

.project-container h1,
p {
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}

.project-container h2 {
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}

.project-container img {
  border-radius: var(--radius-md);
}

/* TAGS */
.tag-container {
  display: flex;
  padding-top: var(--space-4);
  border-bottom: solid 1px var(--color-contrast-muted);
}

.tag-item {
  display: inline-block;
  margin-right: var(--space-1);
  margin-left: var(--space-1);
  padding-left: var(--space-1);
  padding-right: var(--space-1);
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  font-size: var(--fs-300);
  color: var(--color-text-muted);
}

.footer {
  display: flex;
  justify-content: center;
  border-top: solid 1px var(--color-contrast-muted);
  backdrop-filter: blur(4px);
}

.footer::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 2px;
  background: var(--color-contrast-muted);
  filter: blur(8px);
  mix-blend-mode: screen; /* additive light */
  opacity: 0.9;
  pointer-events: none;
}

.video-container {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 ratio */
  width: 100%;
  height: 0;
  overflow: hidden;
  border-radius: 12px;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.error-message {
  color: var(--color-error);
  font-size: var(--fs-200);
  margin-top: var(--space-1);
}

.typewriter {
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  border-right: 2px solid #fff;
  animation:
    typing 1s steps(14, end) forwards,
    blink 0.7s step-end infinite;
}

@media (prefers-reduced-motion: reduce) {
  /* .typewriter {
    animation: none !important;
  } */
}

/* adjust steps() to match character count of your text */
@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 14ch;
  }
}

@keyframes blink {
  50% {
    border-color: transparent;
  }
}

@media (max-width: 768px) {
  .inner-section h1 {
    font-size: var(--fs-600);
  }
}