/* =========================================================
   GUESTBOOK (SỔ LƯU BÚT & STICKER BOARD) COMPONENT
   ========================================================= */

.guestbook-wrapper {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 36px;
  align-items: flex-start;
}

.guestbook-input-card {
  padding: 28px;
  background-color: var(--bg-card);
}

.sticker-picker-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.sticker-opt {
  font-size: 1.6rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-secondary);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-solid-sm);
  transition: var(--transition-fast);
  cursor: pointer;
}

.sticker-opt:hover {
  transform: scale(1.15) rotate(-5deg);
}

.sticker-opt.selected {
  background-color: var(--card-pastel-2);
  border-color: var(--accent-primary);
  transform: scale(1.12);
  box-shadow: var(--shadow-solid);
}

/* Sticker Board / Corkboard / Scrapbook Canvas */
.guestbook-board-container {
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-solid-lg);
  min-height: 420px;
  position: relative;
  background-image: radial-gradient(var(--bg-dot) 1px, transparent 1px);
  background-size: 16px 16px;
}

.guestbook-board-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 20px;
}

/* Post-It Sticker Note */
.sticker-note {
  background-color: var(--note-bg, #FFF1CD);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px;
  box-shadow: 3px 3px 0px rgba(51, 39, 34, 0.2);
  position: relative;
  transform: rotate(var(--note-rotation, 0deg));
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 140px;
}

.sticker-note:hover {
  transform: scale(1.06) rotate(0deg);
  box-shadow: 6px 6px 0px rgba(51, 39, 34, 0.3);
  z-index: 10;
}

.pin-thumbtack {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1rem;
  filter: drop-shadow(1px 1px 0px rgba(0,0,0,0.2));
}

.sticker-note-icon {
  font-size: 1.8rem;
  margin-bottom: 6px;
}

.sticker-note-text {
  font-family: var(--font-handwriting);
  font-size: 1.15rem;
  color: #332722;
  line-height: 1.4;
  margin-bottom: 10px;
  word-break: break-word;
}

.sticker-note-author {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: #6B574D;
  border-top: 1px dashed rgba(51, 39, 34, 0.2);
  padding-top: 6px;
}

.guestbook-empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

@media (max-width: 860px) {
  .guestbook-wrapper {
    grid-template-columns: 1fr;
  }
}