/* ============================================================================
 * anim-tools-canvas-drawer-modal.css · 我的素材 drawer + 创建主体 modal (B-4 4a+4b)
 * ----------------------------------------------------------------------------
 * Plan v5 Phase 3 Stage B-4 4a/4b
 * 注：本文件从 overlay.css (1092 行) 拆出，避免单文件破 300 约束
 * 内容：
 *   - .canvas-mymedia-drawer-mount / .canvas-mymedia-drawer (dual section drawer)
 *   - .canvas-modal-backdrop / .canvas-modal (业务 modal 通用容器)
 *   - .canvas-create-subject-modal (创建主体 modal 字段)
 *   - .canvas-confirm-modal / .canvas-confirm-modal-danger (退出 confirm mixed convention)
 * 全 token：--canvas-* (来自 anim-tools-canvas-tokens.css)
 * ============================================================================ */

/* === MyMedia Drawer (B-4 4a+4b) ============================================ */
.canvas-mymedia-drawer-mount {
  position: fixed;
  inset: 0;
  z-index: var(--canvas-z-modal);
  pointer-events: none;
}

.canvas-mymedia-drawer {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 420px;
  background: var(--canvas-bg-card);
  border-right: 1px solid var(--canvas-border-default);
  box-shadow: var(--canvas-shadow-lg);
  display: flex;
  flex-direction: column;
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
  pointer-events: auto;
  animation: canvas-drawer-slide-in 200ms var(--canvas-ease-out);
}

@keyframes canvas-drawer-slide-in {
  from { transform: translateX(-100%); }
  to   { transform: translateX(0); }
}

.canvas-mymedia-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--canvas-space-4);
  border-bottom: 1px solid var(--canvas-border-default);
}
.canvas-mymedia-title {
  font-size: var(--canvas-text-base);
  font-weight: 500;
  color: var(--canvas-fg-default);
}
.canvas-mymedia-close {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 18px;
  color: var(--canvas-fg-muted);
  padding: 4px 8px;
  border-radius: var(--canvas-radius-sm);
}
.canvas-mymedia-close:hover { background: var(--canvas-hover-bg); color: var(--canvas-fg-default); }

.canvas-mymedia-sections {
  display: flex;
  padding: 0 var(--canvas-space-4);
  border-bottom: 1px solid var(--canvas-border-default);
}
.canvas-mymedia-section-btn {
  padding: var(--canvas-space-3) var(--canvas-space-3);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--canvas-fg-muted);
  font-size: var(--canvas-text-sm);
  font-family: inherit;
  border-bottom: 2px solid transparent;
  margin-right: var(--canvas-space-3);
  transition: color 150ms var(--canvas-ease-out);
}
.canvas-mymedia-section-btn:hover { color: var(--canvas-fg-default); }
.canvas-mymedia-section-btn.active {
  color: var(--canvas-primary-filled);
  border-bottom-color: var(--canvas-primary-filled);
}

.canvas-mymedia-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: var(--canvas-space-3) var(--canvas-space-4);
  border-bottom: 1px solid var(--canvas-border-default);
}
.canvas-mymedia-tab {
  padding: 4px 12px;
  background: var(--canvas-bg-canvas);
  border: 1px solid var(--canvas-border-default);
  border-radius: var(--canvas-radius-sm);
  cursor: pointer;
  font-size: var(--canvas-text-xs);
  font-family: inherit;
  color: var(--canvas-fg-default);
  transition: all 150ms var(--canvas-ease-out);
}
.canvas-mymedia-tab:hover {
  border-color: var(--canvas-border-strong);
}
.canvas-mymedia-tab.active {
  background: var(--canvas-primary-filled);
  color: var(--canvas-fg-on-brand);
  border-color: var(--canvas-primary-filled);
}

.canvas-mymedia-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--canvas-space-4);
}
.canvas-mymedia-create-subject {
  width: 100%;
  padding: var(--canvas-space-3) var(--canvas-space-4);
  background: var(--canvas-primary-soft);
  border: 1px dashed var(--canvas-primary-filled);
  border-radius: var(--canvas-radius-md);
  color: var(--canvas-primary-filled);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--canvas-text-sm);
  margin-bottom: var(--canvas-space-3);
  transition: background 150ms var(--canvas-ease-out);
}
.canvas-mymedia-create-subject:hover { background: var(--canvas-primary-ring); }

.canvas-mymedia-empty {
  text-align: center;
  color: var(--canvas-fg-muted);
  padding: var(--canvas-space-10) var(--canvas-space-4);
  font-size: var(--canvas-text-sm);
}

/* === Modal Backdrop / Base 通用容器 ======================================== */
.canvas-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.40);
  z-index: var(--canvas-z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--canvas-font-family);
}
.canvas-modal {
  background: var(--canvas-bg-card);
  border-radius: var(--canvas-radius-lg);
  box-shadow: var(--canvas-shadow-xl);
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
  overflow: hidden;
}
.canvas-create-subject-modal { width: 520px; }
.canvas-confirm-modal { width: 360px; }

.canvas-modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--canvas-space-4);
  border-bottom: 1px solid var(--canvas-border-default);
}
.canvas-modal-title {
  font-size: var(--canvas-text-base);
  font-weight: 500;
  color: var(--canvas-fg-default);
}
.canvas-modal-close {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 18px;
  color: var(--canvas-fg-muted);
  padding: 4px 8px;
  border-radius: var(--canvas-radius-sm);
}
.canvas-modal-close:hover { background: var(--canvas-hover-bg); color: var(--canvas-fg-default); }

.canvas-modal-body {
  padding: var(--canvas-space-4);
  overflow-y: auto;
  flex: 1;
}
.canvas-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--canvas-space-2);
  padding: var(--canvas-space-3) var(--canvas-space-4);
  border-top: 1px solid var(--canvas-border-default);
}

/* === Modal button trio (cancel / confirm-blue / confirm-danger) ============ */
.canvas-modal-cancel,
.canvas-modal-confirm-blue,
.canvas-modal-confirm-danger {
  padding: 6px 18px;
  border-radius: var(--canvas-radius-md);
  font-family: inherit;
  font-size: var(--canvas-text-sm);
  cursor: pointer;
  transition: background 150ms var(--canvas-ease-out);
}
.canvas-modal-cancel {
  background: transparent;
  border: 1px solid var(--canvas-border-default);
  color: var(--canvas-fg-default);
}
.canvas-modal-cancel:hover { background: var(--canvas-bg-canvas); }
/* mixed convention #1: 创建 = 蓝色 (UTEN 统一玫瑰豆沙) */
.canvas-modal-confirm-blue {
  background: var(--canvas-primary-filled);
  color: var(--canvas-fg-on-brand);
  border: 1px solid var(--canvas-primary-filled);
}
.canvas-modal-confirm-blue:hover { background: var(--canvas-primary-hover); }
.canvas-modal-confirm-blue.is-disabled,
.canvas-modal-confirm-blue:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.canvas-modal-confirm-blue.is-disabled:hover,
.canvas-modal-confirm-blue:disabled:hover { background: var(--canvas-primary-filled); }
/* mixed convention #2: 退出未保存 = 红色 danger */
.canvas-modal-confirm-danger {
  background: var(--canvas-danger);
  color: var(--canvas-fg-on-brand);
  border: 1px solid var(--canvas-danger);
}
.canvas-modal-confirm-danger:hover { background: #B83838; }

/* === Confirm Modal Danger (⊘ 红 icon header) =============================== */
.canvas-confirm-modal-danger .canvas-confirm-header {
  display: flex;
  align-items: center;
  gap: var(--canvas-space-2);
}
.canvas-modal-danger-icon {
  color: var(--canvas-danger);
  font-size: 18px;
  font-weight: 600;
}
.canvas-confirm-message {
  margin: 0;
  color: var(--canvas-fg-subtle);
  font-size: var(--canvas-text-sm);
  line-height: 1.5;
}

/* === 表单控件 (创建主体 modal) ============================================ */
.canvas-form-row {
  margin-bottom: var(--canvas-space-4);
  position: relative;
}
.canvas-form-label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
}
.canvas-form-input,
.canvas-form-textarea {
  width: 100%;
  padding: 8px 12px;
  background: var(--canvas-bg-card);
  border: 1px solid var(--canvas-border-default);
  border-radius: var(--canvas-radius-sm);
  font-family: inherit;
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
  box-sizing: border-box;
  transition: border-color 150ms var(--canvas-ease-out);
}
.canvas-form-input:focus,
.canvas-form-textarea:focus {
  outline: none;
  border-color: var(--canvas-border-focus);
}
.canvas-form-textarea {
  resize: vertical;
  min-height: 72px;
}
.canvas-form-hint {
  display: block;
  text-align: right;
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-muted);
  margin-top: 4px;
}

.canvas-media-upload-box {
  border: 1px dashed var(--canvas-border-default);
  border-radius: var(--canvas-radius-md);
  padding: var(--canvas-space-5);
  text-align: center;
  background: var(--canvas-bg-canvas);
  cursor: pointer;
  transition: border-color 150ms var(--canvas-ease-out);
}
.canvas-media-upload-box:hover {
  border-color: var(--canvas-primary-filled);
}
.canvas-media-upload-hint {
  color: var(--canvas-primary-filled);
  font-size: var(--canvas-text-sm);
  font-weight: 500;
  margin-bottom: 4px;
}
.canvas-media-upload-sub {
  color: var(--canvas-fg-muted);
  font-size: var(--canvas-text-xs);
  line-height: 1.4;
}

/* === Tag input (chip + 输入) =============================================== */
.canvas-tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 8px;
  background: var(--canvas-bg-card);
  border: 1px solid var(--canvas-border-default);
  border-radius: var(--canvas-radius-sm);
  min-height: 38px;
  align-items: center;
}
.canvas-tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background: var(--canvas-primary-filled);
  color: var(--canvas-fg-on-brand);
  border-radius: var(--canvas-radius-sm);
  font-size: var(--canvas-text-xs);
}
.canvas-tag-remove {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--canvas-fg-on-brand);
  padding: 0 2px;
  font-size: 14px;
  line-height: 1;
}
.canvas-tag-input {
  flex: 1;
  min-width: 120px;
  background: transparent;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-default);
}

/* === AI 智能生成 button =================================================== */
.canvas-ai-generate-btn {
  width: 100%;
  margin-top: 8px;
  padding: 6px 12px;
  background: var(--canvas-primary-soft);
  border: 1px solid var(--canvas-primary-filled);
  border-radius: var(--canvas-radius-md);
  color: var(--canvas-primary-filled);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--canvas-text-xs);
  transition: background 150ms var(--canvas-ease-out);
}
.canvas-ai-generate-btn:hover { background: var(--canvas-primary-ring); }