/* Animations CSS - Transitions, Reveals, Effects */

/* Fade in animation */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Fade in up animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scale in animation */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Scroll indicator animation */
@keyframes scrollBounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(8px);
  }
}

/* Animation classes */
.animate-fade-in {
  animation: fadeIn 0.5s ease forwards;
}

.animate-fade-in-up {
  animation: fadeInUp 0.5s ease forwards;
}

.animate-scale-in {
  animation: scaleIn 0.3s ease forwards;
}

/* Stagger animations */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* Scroll reveal (used with JS) */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero scroll indicator */
.scroll-indicator {
  animation: scrollBounce 2s ease-in-out infinite;
}

/* Project card modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  position: relative;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  max-width: 800px;
  max-height: 90vh;
  overflow: hidden;
  width: 100%;
  transform: scale(0.95);
  transition: transform var(--transition-base);
}

.modal-overlay.open .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-subtle);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  z-index: 1;
}

.modal-close:hover {
  background-color: var(--color-border);
  color: var(--color-text);
}

/* Modal navigation arrows - positioned outside modal on desktop */
.modal-nav {
  position: fixed;
  top: 65%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  z-index: calc(var(--z-modal) + 1);
}

.modal-nav:hover {
  background-color: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

/* Desktop: position outside the modal (modal is max 800px centered) */
.modal-nav-prev {
  left: calc(50% - 400px - 60px);
}

.modal-nav-next {
  right: calc(50% - 400px - 60px);
}

/* Medium screens: adjust position */
@media (max-width: 960px) {
  .modal-nav-prev {
    left: var(--space-4);
  }

  .modal-nav-next {
    right: var(--space-4);
  }
}

/* Mobile: smaller buttons, stay at sides */
@media (max-width: 768px) {
  .modal-nav {
    width: 44px;
    height: 44px;
  }

  .modal-nav-prev {
    left: var(--space-2);
  }

  .modal-nav-next {
    right: var(--space-2);
  }

  /* Modal content mobile layout - leave space for iOS nav bars */
  .modal-content {
    max-height: 85vh;
    max-height: 85dvh; /* Dynamic viewport height for iOS */
    margin: 24px 0;
    border-radius: var(--radius-lg);
  }

  .modal-media {
    max-height: 35vh;
    aspect-ratio: auto;
  }

  .modal-youtube-container {
    max-height: 35vh;
    aspect-ratio: 16/9;
    border-radius: 0;
  }

  .modal-body {
    padding: var(--space-4);
  }

  /* Stack header: pills on top, title below */
  .modal-header-row {
    flex-direction: column;
    gap: var(--space-2);
    padding-right: 40px;
  }

  .modal-pills {
    order: -1;
    justify-content: flex-start;
  }

  .modal-title {
    font-size: var(--text-lg);
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .modal-subtitle {
    font-size: var(--text-sm);
  }

  .modal-description {
    font-size: var(--text-sm);
  }

  .modal-close {
    top: var(--space-2);
    right: var(--space-2);
  }

  .modal-pill {
    font-size: 11px;
  }
}

.modal-media {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  flex-shrink: 0;
}

/* Prevent any tap/click interaction on inline videos */
.modal-video-inline {
  pointer-events: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.modal-media-contain {
  object-fit: contain;
  background-color: var(--color-bg-subtle);
}

/* Video controls - show on hover only (desktop) */
@media (hover: hover) {
  .video-hover-controls::-webkit-media-controls-panel {
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .video-hover-controls:hover::-webkit-media-controls-panel {
    opacity: 1;
  }

  /* Firefox fallback */
  .video-hover-controls {
    --controls-opacity: 0;
  }

  .video-hover-controls:hover {
    --controls-opacity: 1;
  }
}

/* Mobile: hide video controls completely */
@media (hover: none) and (pointer: coarse) {
  .video-hover-controls::-webkit-media-controls {
    display: none !important;
  }

  .video-hover-controls::-webkit-media-controls-panel {
    display: none !important;
  }

  .video-hover-controls::-webkit-media-controls-enclosure {
    display: none !important;
  }
}

.modal-youtube-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--bg-primary);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  overflow: hidden;
  flex-shrink: 0;
}

.modal-youtube-iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.modal-body {
  padding: var(--space-6);
  padding-bottom: var(--space-8);
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.modal-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-2);
  padding-right: 44px; /* Space for close button */
}

.modal-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin: 0;
  flex: 1;
}

.modal-pills {
  display: flex;
  gap: var(--space-2);
  flex-shrink: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.modal-pill {
  font-size: 10px;
  font-family: var(--font-mono);
  font-weight: var(--font-medium);
  padding: 4px 10px;
  background-color: var(--color-bg-subtle);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.modal-pill-nda {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-text-subtle);
}

.modal-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.modal-description {
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

/* Markdown content styles */
.modal-description p {
  margin: 0 0 0.75em 0;
}

.modal-description p:last-child {
  margin-bottom: 0;
}

.modal-description ul {
  margin: 0.5em 0;
  padding-left: 1.5em;
  list-style: disc outside;
}

.modal-description ol {
  margin: 0.5em 0;
  padding-left: 1.5em;
  list-style: decimal outside;
}

.modal-description li {
  margin-bottom: 0.2em;
  display: list-item;
}

.modal-description li:last-child {
  margin-bottom: 0;
}

.modal-description a {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

.modal-description a:hover {
  color: var(--color-primary);
}

.modal-description strong {
  font-weight: var(--font-semibold);
  color: var(--color-text);
}

.modal-description em {
  font-style: italic;
}

.modal-collaborators {
  font-size: var(--text-sm);
  margin-bottom: var(--space-6);
}

.collaborators-label {
  color: var(--color-text-subtle);
  margin-right: var(--space-2);
}

.collaborators-list {
  color: var(--color-text-muted);
}

.modal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.modal-actions-row {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  flex: 1;
  order: 1;
}

.modal-links {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  flex-shrink: 0;
  order: 2;
}

/* Mobile: stack tags above links */
@media (max-width: 768px) {
  .modal-actions-row {
    flex-direction: column;
    gap: var(--space-4);
  }

  .modal-tags {
    width: 100%;
    order: 1;
  }

  .modal-links {
    width: 100%;
    order: 2;
  }
}

/* Page transitions */
.page-enter {
  opacity: 0;
}

.page-enter-active {
  opacity: 1;
  transition: opacity 300ms ease;
}

.page-exit {
  opacity: 1;
}

.page-exit-active {
  opacity: 0;
  transition: opacity 300ms ease;
}

/* Hover lift effect */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .scroll-indicator {
    animation: none;
  }
}