@keyframes n {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

/* ===== Drawer ===== */
.btm-drawer {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: clamp(320px, 40%, 720px);
  background-color: var(--background-color-A);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
  transition:
    transform 0.2s cubic-bezier(0.4, 0, 0.2, 1),
    width 0.2s cubic-bezier(0.4, 0, 0.2, 1),
    left 0.2s cubic-bezier(0.4, 0, 0.2, 1),
    border-radius 0.2s ease;
  z-index: var(--z-bottom-drawer);
  box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.2);
}

.btm-drawer.btm-closed {
  transform: translateX(-50%) translateY(calc(100% - 30px));
}

.btm-drawer:not(.btm-closed) {
  width: 100%;
  left: 0;
  transform: none;
  border-radius: 0;
}

/* ===== Handle ===== */
.btm-drawer-handle {
  height: 30px;
  background: rgba(0, 0, 0, 0.35);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  display: flex;
  align-items: center;
  padding: 0 16px;
  font-size: 11px;
  letter-spacing: 0.5px;
  user-select: none;
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
  transition: background 0.15s ease;
}

.btm-drawer:not(.btm-closed) .btm-drawer-handle {
  border-radius: 0;
}

.btm-drawer-handle:hover {
  background: rgba(0, 0, 0, 0.45);
}

/* ===== Nav ===== */
.btm-nav-left,
.btm-nav-right {
  min-width: 120px;
  cursor: pointer;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.45);
  transition: color 0.15s ease;
}

.btm-nav-left {
  text-align: left;
}

.btm-nav-center {
  flex: 1;
  text-align: center;
  color: rgba(255, 255, 255, 0.55);
  font-weight: 500;
}

.btm-nav-right {
  text-align: right;
}

.btm-nav-left:hover,
.btm-nav-right:hover {
  color: rgba(255, 255, 255, 0.9);
}

/* ===== Content ===== */
.btm-drawer-content {
  padding: 10px 12px;
  height: 200px;
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
}

.btm-drawer-content::-webkit-scrollbar {
  height: 8px;
}

.btm-drawer-content::-webkit-scrollbar-track {
  background: var(--background-color-A);
}

.btm-drawer-content::-webkit-scrollbar-thumb {
  background: var(--color-scrollbar-thumb);
  border-radius: var(--fjm-button-border-radius);
}

.btm-drawer-content::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-hover);
}

.btm-image-container {
  display: inline-flex;
  gap: 8px;
  height: 100%;
}

/* ===== Thumbnail wrapper ===== */
.btm-image-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  margin: 0 20px 0 0;
  height: 100%;
}

/* ===== Thumbnail ===== */
.btm-image {
  height: 100%;
  width: auto;
  object-fit: contain;
  cursor: pointer;
  border: 2px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--fjm-border-radius);
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease,
    transform 0.15s ease;
}

.btm-image:hover {
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  transform: translateY(-2px);
}

.btm-image.btm-active {
  border-color: var(--color-accent);
  box-shadow:
    0 0 0 1px var(--color-accent),
    0 4px 16px rgba(129, 0, 0, 0.3);
}

/* ===== Page number badge ===== */
.btm-page-number {
  position: absolute;
  top: 6px;
  left: 6px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  color: rgba(255, 255, 255, 0.8);
  padding: 1px 7px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 500;
  z-index: 1;
  letter-spacing: 0.5px;
}

/* ===== Action buttons ===== */
.btm-add-btn,
.btm-move-btn,
.btm-delete-btn {
  position: absolute;
  border: none;
  cursor: pointer;
  z-index: 1;
  color: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease;
}

.btm-add-btn,
.btm-move-btn {
  padding: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  font-size: 14px;
}

.btm-delete-btn {
  padding: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  top: 6px;
  right: 6px;
  font-size: 12px;
}

.btm-add-btn {
  right: -22px;
  top: 50%;
  transform: translateY(-50%);
}

.btm-move-btn {
  top: 50%;
  transform: translateY(-50%);
}

.btm-move-left {
  left: 6px;
}

.btm-move-right {
  right: 6px;
}

.btm-add-btn:hover,
.btm-move-btn:hover {
  background: rgba(129, 0, 0, 0.7);
}

.btm-delete-btn:hover {
  background: rgba(180, 40, 40, 0.8);
}

/* ===== Legacy ===== */
.btm-close-btn {
  position: absolute;
  top: 0.5vh;
  right: 0.5vh;
  background-color: rgba(0, 0, 0, 0.7);
  border: none;
  border-radius: 50%;
  width: 2em;
  height: 2em;
  font-size: 0.8em;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
}

.btm-drawer-content h2 {
  color: var(--color-hr);
  text-shadow: 0 0 10px rgba(255, 149, 50, 0.7);
}

.btm-drawer-content p {
  color: #e0e0e0;
}

.neon-text {
  color: var(--color-hr);
}

.btm-image.btm-placeholder {
  min-width: 100px;
  background: var(--color-tertiary);
}

/* ===== Dialog ===== */
.btm-dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: var(--z-modal);
}

.btm-dialog {
  background: var(--background-color-A);
  padding: 24px;
  border-radius: var(--fjm-border-radius);
  min-width: 300px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-text-primary);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}

.btm-dialog h3 {
  margin: 0 0 20px 0;
  font-size: 16px;
  font-weight: 500;
}

.btm-radio-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.btm-radio-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: 4px 0;
}

.btm-radio-group input[type="radio"] {
  accent-color: var(--color-accent);
}

.btm-dialog-buttons {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.btm-dialog-button {
  padding: 8px 16px;
  border: none;
  border-radius: var(--fjm-button-border-radius);
  cursor: pointer;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text-secondary);
  transition: background 0.15s ease;
}

.btm-dialog-button:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btm-dialog-submit {
  background: var(--color-accent);
  color: var(--color-text-primary);
}

.btm-dialog-submit:hover {
  background: var(--color-accent-hover);
}

/* ===== Light mode ===== */
.light-mode .btm-drawer {
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.light-mode .btm-drawer-handle {
  background: rgba(0, 0, 0, 0.07);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.light-mode .btm-drawer-handle:hover {
  background: rgba(0, 0, 0, 0.12);
}

.light-mode .btm-dialog {
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.light-mode .btm-dialog-button {
  background: rgba(0, 0, 0, 0.06);
}

.light-mode .btm-dialog-button:hover {
  background: rgba(0, 0, 0, 0.12);
}