/* KeepMotion CSS */

:root {
  --sat: env(safe-area-inset-top, 0px);
  --sab: env(safe-area-inset-bottom, 0px);
  --sal: env(safe-area-inset-left, 0px);
  --sar: env(safe-area-inset-right, 0px);
}

body {
  padding-top: var(--sat);
  padding-left: var(--sal);
  padding-right: var(--sar);
  padding-bottom: calc(5rem + var(--sab));
  -webkit-tap-highlight-color: transparent;
}

@media (min-width: 640px) {
  body {
    padding-bottom: 2rem;
  }
}

/* PC Wide Canvas Mode */
.canvas-expanded {
  max-width: 96% !important;
}

/* Responsive Masonry Layout for PC & Mobile */
.masonry-columns {
  column-count: 1;
  column-gap: 1rem;
}
@media (min-width: 480px) {
  .masonry-columns {
    column-count: 2;
    column-gap: 1rem;
  }
}
@media (min-width: 768px) {
  .masonry-columns {
    column-count: 2;
    column-gap: 1.25rem;
  }
}
@media (min-width: 1024px) {
  .masonry-columns {
    column-count: 3;
    column-gap: 1.25rem;
  }
}
@media (min-width: 1280px) {
  .masonry-columns {
    column-count: 4;
    column-gap: 1.25rem;
  }
}
/* Ultrawide 1440p and 4K displays */
@media (min-width: 1536px) {
  .masonry-columns {
    column-count: 5;
    column-gap: 1.25rem;
  }
}
@media (min-width: 1920px) {
  .masonry-columns {
    column-count: 6;
    column-gap: 1.25rem;
  }
}

.masonry-card {
  break-inside: avoid;
  margin-bottom: 1rem;
  transform: translateZ(0);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease, border-color 0.2s ease;
  user-select: none;
}

@media (min-width: 640px) {
  .masonry-card {
    margin-bottom: 1.25rem;
  }
  .masonry-card:hover {
    transform: translateY(-2px);
  }
}

/* Keyboard selection outline */
.card-keyboard-focus {
  outline: 3px solid #3b82f6 !important;
  outline-offset: 2px;
}

/* Grid Layout Variant */
.board-grid-view {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 1rem;
}
@media (min-width: 480px) {
  .board-grid-view {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1024px) {
  .board-grid-view {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }
}
@media (min-width: 1280px) {
  .board-grid-view {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.25rem;
  }
}
@media (min-width: 1536px) {
  .board-grid-view {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1.25rem;
  }
}
@media (min-width: 1920px) {
  .board-grid-view {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 1.25rem;
  }
}
.board-grid-view .masonry-card {
  margin-bottom: 0;
  height: 100%;
}

/* List Layout Variant */
.board-list-view {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
}
.board-list-view .masonry-card {
  margin-bottom: 0;
  width: 100%;
}

/* Full-Window Drag & Drop Overlay on PC */
#globalDropOverlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
#globalDropOverlay.active {
  display: flex;
}
.drop-border-animated {
  border: 3px dashed #60a5fa;
  animation: pulse-border 1.2s infinite;
}

/* Dynamic Top-Bump Animation */
@keyframes bumpPulse {
  0% {
    transform: scale(0.96) translateY(-4px);
    box-shadow: 0 0 0 4px #3b82f6, 0 15px 30px -5px rgba(59, 130, 246, 0.45);
  }
  50% {
    transform: scale(1.02) translateY(0);
    box-shadow: 0 0 0 5px #60a5fa, 0 20px 35px -5px rgba(59, 130, 246, 0.35);
  }
  100% {
    transform: scale(1) translateY(0);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  }
}
.bump-highlight {
  animation: bumpPulse 1.8s cubic-bezier(0.16, 1, 0.3, 1) forwards !important;
  border-color: #3b82f6 !important;
  position: relative;
  z-index: 10;
}

/* Tag Chip Pulse for Newly Added Tags */
@keyframes tagFlash {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.12); background-color: #dbeafe; color: #1d4ed8; }
}
.new-tag-flash {
  animation: tagFlash 1.2s ease-in-out;
}

/* Drag & Drop Pulse */
@keyframes pulse-border {
  0%, 100% { border-color: #3b82f6; }
  50% { border-color: #93c5fd; }
}
.dragover-active {
  animation: pulse-border 1.2s infinite;
  background-color: rgba(239, 246, 255, 0.95) !important;
}

/* Custom Scrollbar for PC */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}
.no-scrollbar::-webkit-scrollbar {
  display: none;
}
.no-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Color backgrounds mapping */
.bg-keep-white   { background-color: #ffffff; }
.bg-keep-coral   { background-color: #ffebee; }
.bg-keep-peach   { background-color: #fff3e0; }
.bg-keep-sand    { background-color: #fffde7; }
.bg-keep-mint    { background-color: #e8f5e9; }
.bg-keep-sage    { background-color: #e0f2f1; }
.bg-keep-fog     { background-color: #f1f5f9; }
.bg-keep-storm   { background-color: #e2e8f0; }
.bg-keep-dusk    { background-color: #ede7f6; }
.bg-keep-blossom { background-color: #fce4ec; }

/* Keep border colors to complement background */
.border-keep-white   { border-color: #e2e8f0; }
.border-keep-coral   { border-color: #ffcdd2; }
.border-keep-peach   { border-color: #ffe0b2; }
.border-keep-sand    { border-color: #fff9c4; }
.border-keep-mint    { border-color: #c8e6c9; }
.border-keep-sage    { border-color: #b2dfdb; }
.border-keep-fog     { border-color: #cbd5e1; }
.border-keep-storm   { border-color: #94a3b8; }
.border-keep-dusk    { border-color: #d1c4e9; }
.border-keep-blossom { border-color: #f8bbd0; }

/* Mobile Bottom Navigation Bar */
.mobile-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 45;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid #e2e8f0;
  padding-bottom: max(0.5rem, var(--sab));
  padding-top: 0.5rem;
  box-shadow: 0 -4px 15px -3px rgba(0, 0, 0, 0.05);
}

/* Desktop Custom Context Menu */
#desktopContextMenu {
  position: fixed;
  z-index: 90;
  display: none;
  min-width: 180px;
  background: #ffffff;
  border-radius: 0.75rem;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  border: 1px solid #e2e8f0;
  padding: 0.35rem;
  font-size: 0.8125rem;
}
.context-menu-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.65rem;
  border-radius: 0.5rem;
  color: #334155;
  cursor: pointer;
  transition: background-color 0.15s ease;
}
.context-menu-item:hover {
  background-color: #f1f5f9;
  color: #0f172a;
}
.context-menu-divider {
  height: 1px;
  background-color: #f1f5f9;
  margin: 0.25rem 0;
}

/* Touch active state on Android */
.touch-active:active {
  transform: scale(0.96);
  opacity: 0.85;
}