:root {
  --bg: #f5f1e8;
  --fg: #2c2825;
  --muted: #8a8279;
  --accent: #c45c3e;
  --card: #fffef9;
  --border: #d9d3c7;
  --paper-line: #e0d9cc;
  --shadow: rgba(44, 40, 37, 0.08);
}

[data-theme="white"] {
  --bg: #fafafa;
  --fg: #1a1a1a;
  --muted: #737373;
  --accent: #2563eb;
  --card: #ffffff;
  --border: #e5e5e5;
  --paper-line: #f0f0f0;
  --shadow: rgba(0, 0, 0, 0.06);
}

[data-theme="yellow"] {
  --bg: #fff9c4;
  --fg: #3d3d00;
  --muted: #8a8a4a;
  --accent: #e65100;
  --card: #fffde7;
  --border: #f0e68c;
  --paper-line: #f5f0b0;
  --shadow: rgba(61, 61, 0, 0.08);
}

[data-theme="sepia"] {
  --bg: #f4ecd8;
  --fg: #3d3425;
  --muted: #8a7d69;
  --accent: #8b4513;
  --card: #faf6eb;
  --border: #d4c9b5;
  --paper-line: #e8dfca;
  --shadow: rgba(61, 52, 37, 0.1);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Source Sans 3', sans-serif;
}

h1, h2, h3, .font-display {
  font-family: 'Crimson Pro', serif;
}

.paper-texture {
  background-image: 
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 27px,
      var(--paper-line) 28px
    );
  background-color: var(--card);
}

.grid-texture {
  background-image: 
    linear-gradient(var(--paper-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--paper-line) 1px, transparent 1px);
  background-size: 20px 20px;
  background-color: var(--card);
}

.dot-texture {
  background-image: radial-gradient(circle, var(--paper-line) 1px, transparent 1px);
  background-size: 16px 16px;
  background-color: var(--card);
}

.btn {
  transition: all 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.modal-overlay {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

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

.modal-content {
  transform: scale(0.95) translateY(10px);
  transition: transform 0.25s ease;
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
}

.box-enter {
  animation: boxEnter 0.4s ease forwards;
}

@keyframes boxEnter {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.tool-active {
  background: var(--accent) !important;
  color: white !important;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: var(--border);
  border-radius: 4px;
  height: 6px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

.title-input {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  outline: none;
  transition: border-color 0.2s;
}

.title-input:focus {
  border-bottom-color: var(--accent);
}

/* Draggable elements */
.draggable {
  cursor: grab;
  user-select: none;
  transition: box-shadow 0.15s ease, transform 0.1s ease;
}

.draggable:hover {
  box-shadow: 0 4px 12px var(--shadow);
}

.draggable.dragging {
  cursor: grabbing;
  box-shadow: 0 8px 24px var(--shadow);
  transform: scale(1.02);
  z-index: 100;
  opacity: 0.9;
}

/* Sticky Note Styles */
.draggable-text {
  pointer-events: auto;
  background-color: #fef3c7; /* Tailwind Amber-100 sticky note */
  border-radius: 2px;
  padding: 16px;
  border: 1px solid #fde68a;
  box-shadow: 2px 4px 6px rgba(0, 0, 0, 0.1);
  min-width: 140px;
  min-height: 140px;
  font-family: 'Source Sans 3', sans-serif;
  color: #3f3f46;
  resize: both;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.draggable-text:hover {
  border-color: #eab308;
  box-shadow: 2px 6px 12px rgba(0, 0, 0, 0.12);
}

.draggable-text.editing {
  border-color: #f59e0b;
  background-color: #fffbeb;
  box-shadow: 2px 8px 16px rgba(0, 0, 0, 0.15);
}

.sticky-content {
  cursor: text;
  flex: 1;
  width: 100%;
  height: 100%;
  outline: none;
  resize: none;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.draggable-text.editing .sticky-content {
  user-select: text;
}

.draggable-image {
  pointer-events: auto;
  border-radius: 6px;
  border: 2px solid transparent;
}

.draggable-image:hover {
  border-color: var(--accent);
}

.draggable-image.dragging {
  border-color: var(--accent);
}

/* Delete button for elements */
.element-delete {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 20px;
  height: 20px;
  background: #dc2626;
  color: white;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 12px;
  font-weight: bold;
  z-index: 10;
  transition: transform 0.1s ease;
}

.draggable:hover .element-delete {
  display: flex;
}

.element-delete:hover {
  transform: scale(1.2);
}

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