/* ========================================================
   可愛風學期手寫筆記本生成工具 - 樣式表 (style.css)
   ======================================================== */

:root {
  /* 介面 UI 主題色 (溫馨奶油粉彩) */
  --ui-bg: #f8f6f0;
  --ui-panel-bg: #ffffff;
  --ui-primary: #f08a9d;
  --ui-primary-hover: #e57287;
  --ui-primary-light: #fff0f3;
  --ui-accent: #78a6c8;
  --ui-text-dark: #3a322d;
  --ui-text-muted: #7e736b;
  --ui-border: #ebdcd0;
  --ui-radius-sm: 8px;
  --ui-radius-md: 14px;
  --ui-radius-lg: 20px;
  --ui-shadow: 0 4px 16px rgba(110, 80, 60, 0.08);

  /* 預設筆記本紙張色彩主題 (可在 .theme-* 中動態覆蓋) */
  --page-bg: #fffcf7;
  --page-accent: #ffeedd;
  --page-primary: #d47e52;
  --page-primary-soft: #fcf1e8;
  --page-line: #e8d7c8;
  --page-subline: #f4ede6;
  --page-text: #4a3e36;
  --page-text-light: #94857b;
  --page-border: #dfc8b7;

  /* 字體族群 */
  --font-base: 'Zen Maru Gothic', 'Noto Sans TC', sans-serif;
  --font-gaegu: 'Gaegu', cursive, 'Zen Maru Gothic', sans-serif;
  --font-kiwi: 'Kiwi Maru', 'Zen Maru Gothic', serif;
  --font-noto: 'Noto Sans TC', sans-serif;
}

/* ================== 主題變數庫 ================== */
.theme-cream {
  --page-bg: #fffcf5;
  --page-accent: #ffeed8;
  --page-primary: #cb7742;
  --page-primary-soft: #fdf2e6;
  --page-line: #edd9c7;
  --page-subline: #f7eee5;
  --page-text: #483d35;
  --page-text-light: #96867a;
  --page-border: #dfc7b2;
}

.theme-sakura {
  --page-bg: #fffbfd;
  --page-accent: #ffebf1;
  --page-primary: #e06080;
  --page-primary-soft: #fdeef3;
  --page-line: #f1d4df;
  --page-subline: #faebf1;
  --page-text: #4d383e;
  --page-text-light: #9c8089;
  --page-border: #e8c4d2;
}

.theme-mint {
  --page-bg: #f9fdfa;
  --page-accent: #e5f6ec;
  --page-primary: #3f9269;
  --page-primary-soft: #eaf7f0;
  --page-line: #cae6d5;
  --page-subline: #e4f3eb;
  --page-text: #32443a;
  --page-text-light: #778f82;
  --page-border: #b8dec7;
}

.theme-lavender {
  --page-bg: #fbfaff;
  --page-accent: #f0ecfc;
  --page-primary: #7b58ad;
  --page-primary-soft: #f2ecfb;
  --page-line: #dccef3;
  --page-subline: #eee6fa;
  --page-text: #3d344d;
  --page-text-light: #897c9c;
  --page-border: #cfbee7;
}

.theme-ocean {
  --page-bg: #f8fbff;
  --page-accent: #e4f1fc;
  --page-primary: #3e81b3;
  --page-primary-soft: #e8f3fc;
  --page-line: #c5def2;
  --page-subline: #e2eef8;
  --page-text: #313e4a;
  --page-text-light: #738797;
  --page-border: #b2d2eb;
}

.theme-bw {
  --page-bg: #ffffff;
  --page-accent: #f2f2f2;
  --page-primary: #333333;
  --page-primary-soft: #f5f5f5;
  --page-line: #cccccc;
  --page-subline: #e8e8e8;
  --page-text: #222222;
  --page-text-light: #777777;
  --page-border: #bbbbbb;
}

/* ================== 全域重設與基礎樣式 ================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-base);
  background-color: var(--ui-bg);
  color: var(--ui-text-dark);
  line-height: 1.5;
  overflow-x: hidden;
}

/* 頂部導航列 */
.app-header {
  background: linear-gradient(135deg, #ffffff 0%, #fff7f9 100%);
  border-bottom: 2px dashed #f0d5c8;
  padding: 12px 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.header-content {
  max-width: 1800px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  font-size: 2rem;
  background: var(--ui-primary-light);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 0 2px #ffcdd8;
}

.logo-text h1 {
  font-size: 1.35rem;
  font-weight: 800;
  color: #c7566d;
  letter-spacing: 0.5px;
}

.logo-text .subtitle {
  font-size: 0.85rem;
  color: var(--ui-text-muted);
  font-weight: 500;
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* 按鈕風格 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--ui-radius-md);
  font-size: 0.95rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
  border: none;
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, #f37b90 0%, #ea5c76 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(234, 92, 118, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #ea647b 0%, #db4a65 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(234, 92, 118, 0.45);
}

.btn-secondary {
  background: #ffffff;
  color: var(--ui-text-dark);
  border: 2px solid #ecd8cc;
}

.btn-secondary:hover {
  background: #fff5ee;
  border-color: #dcbfae;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--ui-text-dark);
  border: 1.5px solid #d5c3b6;
}

.btn-outline:hover {
  background: #f7eee7;
}

.btn-chip {
  background: #fbf5ee;
  border: 1px solid #ebdcd0;
  color: #725b4c;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-chip:hover {
  background: #f0e1d1;
  color: #4f3b2d;
}

/* 雙欄工作區 */
.app-container {
  display: flex;
  max-width: 1920px;
  height: calc(100vh - 76px);
  margin: 0 auto;
  overflow: hidden;
}

/* 左側邊欄 */
.sidebar-panel {
  width: 420px;
  min-width: 380px;
  background: var(--ui-panel-bg);
  border-right: 2px solid #ede1d6;
  display: flex;
  flex-direction: column;
  height: 100%;
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.02);
}

/* 標籤導覽列 */
.panel-tabs {
  display: flex;
  background: #fdf8f4;
  border-bottom: 2px solid #ede1d6;
  padding: 6px 12px 0;
  gap: 6px;
}

.tab-btn {
  flex: 1;
  padding: 10px 4px;
  border: none;
  background: transparent;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ui-text-muted);
  cursor: pointer;
  border-radius: 10px 10px 0 0;
  transition: all 0.2s;
  font-family: inherit;
}

.tab-btn:hover {
  color: var(--ui-text-dark);
  background: rgba(255, 235, 240, 0.4);
}

.tab-btn.active {
  color: #c74d64;
  background: #ffffff;
  border: 2px solid #ede1d6;
  border-bottom: 2px solid #ffffff;
  margin-bottom: -2px;
  box-shadow: 0 -2px 6px rgba(0, 0, 0, 0.02);
}

/* 面板內容捲動區 */
.panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* 區塊標題 */
.section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.section-badge {
  background: #ffe3ea;
  color: #cf4360;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
}

.section-title h3 {
  font-size: 1.05rem;
  font-weight: 800;
  color: #493b33;
}

.mt-4 {
  margin-top: 24px;
}

/* 表單控制元件 */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: #5d4d42;
  margin-bottom: 6px;
}

.form-group-row {
  display: flex;
  gap: 12px;
}

.form-group-row .form-group {
  flex: 1;
}

.form-control {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid #e5d5c7;
  border-radius: var(--ui-radius-sm);
  background-color: #fffefb;
  font-size: 0.92rem;
  font-family: inherit;
  color: var(--ui-text-dark);
  transition: all 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: #f08a9d;
  box-shadow: 0 0 0 3px rgba(240, 138, 157, 0.2);
  background-color: #ffffff;
}

.quick-semester-btns {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: -6px;
  margin-bottom: 16px;
}

.quick-label {
  font-size: 0.78rem;
  color: var(--ui-text-muted);
}

/* 單選卡片 (直式/橫式) */
.radio-card-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.radio-card {
  position: relative;
  cursor: pointer;
}

.radio-card input {
  position: absolute;
  opacity: 0;
}

.radio-card-content {
  border: 2px solid #ebdcd0;
  border-radius: var(--ui-radius-md);
  padding: 12px 10px;
  text-align: center;
  background: #fdfaf7;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.radio-card input:checked + .radio-card-content {
  border-color: #e8637c;
  background: #fff3f5;
  box-shadow: 0 2px 8px rgba(232, 99, 124, 0.2);
}

.radio-card-content .icon {
  font-size: 1.5rem;
  margin-bottom: 4px;
}

.radio-card-content .title {
  font-weight: 800;
  font-size: 0.92rem;
  color: #49392e;
}

.radio-card-content .desc {
  font-size: 0.72rem;
  color: var(--ui-text-muted);
  margin-top: 2px;
}

/* 自訂勾選框 */
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.custom-checkbox {
  display: flex;
  align-items: center;
  position: relative;
  cursor: pointer;
  font-size: 0.9rem;
  user-select: none;
  padding: 8px 12px;
  background: #faf6f1;
  border-radius: var(--ui-radius-sm);
  border: 1px solid #ebdcd0;
  transition: all 0.15s;
}

.custom-checkbox:hover {
  background: #f5ebe0;
}

.custom-checkbox input {
  position: absolute;
  opacity: 0;
}

.checkmark {
  width: 18px;
  height: 18px;
  background-color: #ffffff;
  border: 2px solid #cca993;
  border-radius: 5px;
  margin-right: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.custom-checkbox input:checked ~ .checkmark {
  background-color: #e8637c;
  border-color: #e8637c;
}

.custom-checkbox input:checked ~ .checkmark:after {
  content: "✔";
  font-size: 11px;
  color: white;
  font-weight: bold;
}

.label-text {
  font-weight: 700;
  color: #4b3d33;
}

/* 封面樣板網格 */
.cover-template-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}

.template-card {
  cursor: pointer;
  border: 2px solid #ebdcd0;
  border-radius: var(--ui-radius-sm);
  overflow: hidden;
  transition: all 0.2s;
}

.template-card:hover {
  transform: translateY(-2px);
  border-color: #d6b29d;
}

.template-card.active {
  border-color: #e8637c;
  box-shadow: 0 0 0 2px #ffd3dc;
}

.template-preview {
  padding: 14px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 4px;
}

.t-emoji {
  font-size: 1.4rem;
}

.t-name {
  font-size: 0.76rem;
  font-weight: 700;
}

.t-cream { background: #fff6eb; color: #a25828; }
.t-sakura { background: #ffeef3; color: #bf3f60; }
.t-mint { background: #ebf7f0; color: #2e7a53; }
.t-lavender { background: #f3edfc; color: #644199; }
.t-warm { background: #fff0e3; color: #be5d12; }
.t-minimal { background: #f4f4f4; color: #333333; }

/* 圖片上傳區 */
.file-upload-box {
  border: 2px dashed #dbbfad;
  background: #fcf9f5;
  border-radius: var(--ui-radius-md);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: all 0.2s;
}

.file-upload-box:hover {
  background: #f7efe6;
  border-color: #cb9e84;
}

.file-upload-box input[type="file"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--ui-text-muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.upload-icon {
  font-size: 1.8rem;
}

.upload-preview-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.upload-preview-wrap img {
  max-height: 80px;
  border-radius: 6px;
  border: 1px solid #ddd;
}

.btn-clear-img {
  background: #ffeded;
  color: #d6334f;
  border: 1px solid #f9b8c2;
  padding: 3px 8px;
  font-size: 0.75rem;
  font-weight: bold;
  border-radius: 4px;
  cursor: pointer;
  z-index: 10;
}

.hidden {
  display: none !important;
}

/* 滑動條 */
.range-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.badge {
  background: #f0e2d5;
  color: #634b3d;
  font-size: 0.78rem;
  font-weight: bold;
  padding: 2px 8px;
  border-radius: 12px;
}

.range-slider {
  width: 100%;
  accent-color: #ea5c76;
  cursor: pointer;
}

/* 調色盤選項 */
.color-palette-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.palette-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  background: #faf6f2;
  border: 1.5px solid #ebdcd0;
  border-radius: var(--ui-radius-sm);
  cursor: pointer;
  transition: all 0.15s;
}

.palette-option:hover {
  background: #f4eae0;
}

.palette-option input:checked + .palette-bar {
  outline: 2px solid #e8637c;
  outline-offset: 2px;
}

.palette-bar {
  width: 50px;
  height: 20px;
  border-radius: 10px;
  display: inline-block;
}

.palette-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: #4a3e35;
}

.bar-cream { background: linear-gradient(to right, #cb7742, #ffeed8, #fffcf5); border: 1px solid #d4a57f; }
.bar-sakura { background: linear-gradient(to right, #e06080, #ffebf1, #fffbfd); border: 1px solid #e497ad; }
.bar-mint { background: linear-gradient(to right, #3f9269, #e5f6ec, #f9fdfa); border: 1px solid #8ec5a9; }
.bar-lavender { background: linear-gradient(to right, #7b58ad, #f0ecfc, #fbfaff); border: 1px solid #b7a0d8; }
.bar-ocean { background: linear-gradient(to right, #3e81b3, #e4f1fc, #f8fbff); border: 1px solid #94bfe1; }
.bar-bw { background: linear-gradient(to right, #333333, #cccccc, #ffffff); border: 1px solid #999999; }

/* 面板頁尾 (阿剛老師 & CC 授權) */
.panel-footer {
  background: #f7eee7;
  border-top: 1.5px dashed #decbbe;
  padding: 14px 18px;
  font-size: 0.82rem;
}

.author-credits {
  font-weight: 800;
  color: #554439;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}

.heart-icon {
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

.author-link {
  color: #cf4360;
  text-decoration: none;
  font-weight: 900;
  border-bottom: 1.5px solid #f08a9d;
  padding-bottom: 1px;
  transition: all 0.2s;
}

.author-link:hover {
  color: #a82741;
  background-color: #ffe6ec;
}

.license-info {
  margin-top: 6px;
}

.cc-badge {
  display: inline-block;
  background: #e7d8cb;
  color: #584436;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  margin-bottom: 4px;
}

.license-desc {
  font-size: 0.75rem;
  color: #796659;
  line-height: 1.35;
}

/* ================== 右側：即時預覽檢視區 ================== */
.preview-area {
  flex: 1;
  background: #ece5dc;
  background-image: radial-gradient(#dccfbf 1px, transparent 1px);
  background-size: 20px 20px;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.preview-toolbar {
  background: #ffffff;
  padding: 10px 20px;
  border-bottom: 1.5px solid #ded0c3;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.preview-stats {
  display: flex;
  gap: 8px;
  align-items: center;
}

.badge-info {
  background: #ffe3ea;
  color: #cf3d5d;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.85rem;
}

.badge-subtle {
  background: #f0e6dc;
  color: #6a5749;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.82rem;
}

.badge-print-tip {
  background: #e8f5e9;
  color: #2e7d32;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.82rem;
  border: 1px solid #c8e6c9;
}

.preview-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}

.zoom-controls {
  display: flex;
  align-items: center;
  background: #f5ede4;
  border-radius: 8px;
  padding: 2px 6px;
  gap: 6px;
}

.btn-icon {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: bold;
  color: #554438;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all 0.15s;
}

.btn-icon:hover {
  background: #ebdcd0;
}

#zoom-level {
  font-size: 0.82rem;
  font-weight: bold;
  color: #504035;
  min-width: 40px;
  text-align: center;
}

/* 快速頁面跳轉條 */
.page-quick-nav {
  display: flex;
  gap: 8px;
  padding: 8px 20px;
  background: #fdfaf6;
  border-bottom: 1px solid #ebdcd0;
  overflow-x: auto;
  white-space: nowrap;
}

.nav-page-btn {
  background: #ffffff;
  border: 1px solid #d9c5b4;
  color: #614e41;
  font-size: 0.78rem;
  font-weight: bold;
  padding: 4px 10px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.15s;
}

.nav-page-btn:hover, .nav-page-btn.active {
  background: #f58298;
  color: white;
  border-color: #f58298;
}

/* 畫布檢視區 */
.pages-viewport {
  flex: 1;
  overflow: auto;
  padding: 30px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.pages-canvas {
  display: flex;
  flex-direction: column;
  gap: 36px;
  align-items: center;
  transform-origin: top center;
  transition: transform 0.15s ease-out;
}

/* ========================================================
   筆記本頁面核心排版 (標準 A4 尺寸)
   A4 Portrait: 210mm x 297mm (~ 794px x 1123px at 96 DPI)
   A4 Landscape: 297mm x 210mm (~ 1123px x 794px at 96 DPI)
   ======================================================== */
.notebook-page {
  position: relative;
  background-color: var(--page-bg);
  box-shadow: 0 8px 30px rgba(85, 60, 45, 0.15), 0 2px 6px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
  overflow: hidden;
  box-sizing: border-box;
  color: var(--page-text);
  page-break-after: always;
  break-after: page;
}

/* 直式尺寸 */
.orientation-portrait .notebook-page {
  width: 794px;
  height: 1123px;
  min-width: 794px;
  min-height: 1123px;
  padding: 36px 36px;
}

/* 橫式尺寸 */
.orientation-landscape .notebook-page {
  width: 1123px;
  height: 794px;
  min-width: 1123px;
  min-height: 794px;
  padding: 30px 36px;
}

/* 頁面外框手繪細節 */
.notebook-page.with-corner-border {
  border: 2px solid var(--page-border);
}

.page-decor-corner {
  position: absolute;
  width: 28px;
  height: 28px;
  pointer-events: none;
}

.corner-tl { top: 10px; left: 10px; border-top: 3px solid var(--page-primary); border-left: 3px solid var(--page-primary); border-top-left-radius: 8px; }
.corner-tr { top: 10px; right: 10px; border-top: 3px solid var(--page-primary); border-right: 3px solid var(--page-primary); border-top-right-radius: 8px; }
.corner-bl { bottom: 10px; left: 10px; border-bottom: 3px solid var(--page-primary); border-left: 3px solid var(--page-primary); border-bottom-left-radius: 8px; }
.corner-br { bottom: 10px; right: 10px; border-bottom: 3px solid var(--page-primary); border-right: 3px solid var(--page-primary); border-bottom-right-radius: 8px; }

/* 頁尾頁碼與小語 */
.page-footer-bar {
  position: absolute;
  bottom: 12px;
  left: 36px;
  right: 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--page-text-light);
  border-top: 1px dashed var(--page-line);
  padding-top: 4px;
}

/* ================== 1. 可愛封面頁 (Cover Page) ================== */
.page-cover {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  background-color: var(--page-bg);
}

.cover-bg-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  pointer-events: none;
}

.cover-content-wrap {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 40px 20px;
}

.cover-header-decor {
  text-align: center;
}

.cover-badge-top {
  display: inline-block;
  background: var(--page-accent);
  color: var(--page-primary);
  font-size: 0.95rem;
  font-weight: 800;
  padding: 6px 18px;
  border-radius: 20px;
  border: 1.5px dashed var(--page-primary);
  margin-bottom: 14px;
}

.cover-illustration {
  font-size: 5rem;
  line-height: 1;
  margin: 10px 0;
  filter: drop-shadow(0 4px 10px rgba(0,0,0,0.08));
}

.cover-center-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
  border: 3px solid var(--page-primary);
  border-radius: 24px;
  padding: 40px 30px;
  text-align: center;
  box-shadow: 0 10px 25px rgba(160, 100, 70, 0.08);
  margin: 0 auto;
  width: 85%;
  position: relative;
}

.cover-center-card::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 6px;
  right: 6px;
  bottom: 6px;
  border: 1.5px dashed var(--page-line);
  border-radius: 18px;
  pointer-events: none;
}

.cover-main-title {
  font-size: 2.3rem;
  font-weight: 900;
  color: var(--page-primary);
  margin-bottom: 10px;
  line-height: 1.25;
}

.cover-sub-title {
  font-size: 1.15rem;
  color: var(--page-text);
  font-weight: 600;
  margin-bottom: 24px;
}

.cover-meta-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 320px;
  margin: 0 auto;
  text-align: left;
}

.meta-row {
  display: flex;
  align-items: center;
  border-bottom: 1.5px solid var(--page-primary);
  padding-bottom: 4px;
}

.meta-label {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--page-primary);
  min-width: 80px;
}

.meta-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--page-text);
  flex: 1;
}

.cover-bottom-doodles {
  display: flex;
  justify-content: center;
  gap: 20px;
  font-size: 1.8rem;
  opacity: 0.8;
}

.page-count-input-select {
  padding: 4px 6px;
  border: 1.5px solid #d5c3b6;
  border-radius: 6px;
  font-weight: bold;
  font-size: 0.82rem;
  color: var(--ui-text-dark);
  background: white;
  cursor: pointer;
  outline: none;
}

/* ================== 2. 學期課表頁 (Timetable Page) ================== */
.page-timetable {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.page-header-ribbon {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--page-primary);
  padding-bottom: 8px;
}

.ribbon-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--page-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.timetable-grid {
  flex: 1;
  display: grid;
  grid-template-columns: 80px repeat(5, 1fr);
  gap: 4px;
  background: var(--page-accent);
  padding: 6px;
  border-radius: 12px;
  border: 2px solid var(--page-border);
}

.tt-header {
  background: var(--page-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  border-radius: 6px;
}

.tt-time-col {
  background: var(--page-primary-soft);
  color: var(--page-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.82rem;
  border-radius: 6px;
  border: 1px dashed var(--page-line);
  padding: 2px;
  text-align: center;
  cursor: text;
  outline: none;
  transition: all 0.2s;
  line-height: 1.25;
}

.tt-time-col:hover {
  background: #ffffff;
  box-shadow: 0 0 0 2px rgba(240, 138, 157, 0.3);
}

.tt-time-col:focus {
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(240, 138, 157, 0.4);
  border-color: #ea5c76;
}

.tt-cell {
  background: #ffffff;
  border-radius: 6px;
  border: 1px solid var(--page-line);
  position: relative;
  cursor: text;
  outline: none;
  padding: 4px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--page-text);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  transition: all 0.15s;
}

.tt-cell:hover {
  box-shadow: 0 0 0 1.5px rgba(240, 138, 157, 0.3);
}

.tt-cell:focus {
  box-shadow: 0 0 0 2.5px rgba(240, 138, 157, 0.4);
  border-color: #ea5c76;
}

.tt-cell::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 6px;
  right: 6px;
  border-bottom: 1px dotted var(--page-subline);
  pointer-events: none;
}

/* ================== 3. 月計畫頁 (Monthly Planner) ================== */
.page-monthly {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.monthly-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 14px;
  border-bottom: 2.5px solid var(--page-primary);
  padding-bottom: 8px;
}

.monthly-title-group {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.monthly-big-month {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--page-primary);
  line-height: 1;
}

.monthly-year {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--page-text-light);
}

.monthly-top-goals {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
}

.top-goal-pill {
  background: var(--page-primary-soft);
  color: var(--page-primary);
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 800;
  border: 1px dashed var(--page-primary);
}

/* 月曆主網格 */
.monthly-calendar-container {
  display: flex;
  gap: 16px;
  flex: 1;
}

.monthly-calendar-grid {
  flex: 3;
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: var(--page-accent);
  padding: 6px;
  border-radius: 12px;
  border: 2px solid var(--page-border);
}

.cal-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
  height: 32px;
}

.cal-weekday-header {
  background: var(--page-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  border-radius: 4px;
}

.cal-days-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-auto-rows: 1fr;
  gap: 3px;
}

.cal-day-cell {
  background: #ffffff;
  border-radius: 6px;
  border: 1px solid var(--page-line);
  padding: 4px 6px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.cal-day-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2px;
}

.cal-day-cell.empty-day {
  background: rgba(255, 255, 255, 0.4);
  border-style: dashed;
}

.cal-day-num {
  font-size: 0.92rem;
  font-weight: 900;
  color: var(--page-primary);
  background: var(--page-primary-soft);
  width: 21px;
  height: 21px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.cal-week-tag {
  background: var(--page-primary);
  color: #ffffff;
  font-size: 0.68rem;
  font-weight: 900;
  padding: 1px 6px;
  border-radius: 10px;
  line-height: 1.2;
  white-space: nowrap;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.cal-day-cell.weekend .cal-day-num {
  color: #e55c76;
}

.cal-day-lines {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  margin-top: 2px;
}

.cal-mini-line {
  border-bottom: 1px dashed var(--page-subline);
  height: 1px;
}

/* 月計畫側邊欄 (目標與待辦) */
.monthly-sidebar {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.m-side-card {
  background: #ffffff;
  border: 1.5px solid var(--page-border);
  border-radius: 10px;
  padding: 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.m-side-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--page-primary);
  border-bottom: 1.5px dashed var(--page-primary);
  padding-bottom: 4px;
  margin-bottom: 8px;
}

.m-checklist {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.m-check-item {
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--page-subline);
  padding-bottom: 4px;
}

.m-box {
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--page-primary);
  border-radius: 3px;
}

/* ================== 4. 週計畫頁 (Weekly Planner) ================== */
.page-weekly {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.weekly-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2.5px solid var(--page-primary);
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.form-help-text {
  font-size: 0.78rem;
  color: #8c7365;
  background: #fdf6ee;
  border-left: 3px solid #e09f73;
  padding: 6px 10px;
  border-radius: 0 6px 6px 0;
  margin-top: -6px;
  margin-bottom: 12px;
  line-height: 1.4;
}

.weekly-badge {
  background: var(--page-primary);
  color: white;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 1.1rem;
  font-weight: 900;
  cursor: text;
  transition: all 0.2s;
  outline: none;
  border: 2px dashed transparent;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.weekly-badge:hover {
  border-color: rgba(255, 255, 255, 0.8);
  box-shadow: 0 0 0 2px rgba(234, 92, 118, 0.3);
}

.weekly-badge:focus {
  background: #ffffff;
  color: var(--page-primary);
  border-color: var(--page-primary);
  box-shadow: 0 0 0 4px rgba(240, 138, 157, 0.35);
}

.weekly-badge.empty-week {
  background: var(--page-primary-soft);
  color: var(--page-primary);
  border: 1.5px dashed var(--page-primary);
  min-width: 80px;
  min-height: 28px;
}

.weekly-badge.empty-week:empty {
  display: inline-block;
}

.weekly-date-range {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--page-text);
}

.weekly-focus-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--page-primary-soft);
  padding: 4px 12px;
  border-radius: 8px;
  border: 1.5px dashed var(--page-primary);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--page-primary);
  cursor: text;
  outline: none;
  transition: all 0.2s;
  min-width: 140px;
}

.weekly-focus-box:hover {
  background: #ffffff;
  box-shadow: 0 0 0 2px rgba(240, 138, 157, 0.3);
}

.weekly-focus-box:focus {
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(240, 138, 157, 0.4);
  border-color: #ea5c76;
}

.mt-1 {
  margin-top: 4px !important;
}

/* 週計畫版面 (直式) */
.orientation-portrait .weekly-body-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: repeat(4, 1fr);
  gap: 10px;
  flex: 1;
}

/* 週計畫版面 (橫式) */
.orientation-landscape .weekly-body-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: 1fr 1fr;
  gap: 10px;
  flex: 1;
}

.day-card {
  background: #ffffff;
  border: 1.5px solid var(--page-border);
  border-radius: 10px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.day-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1.5px dashed var(--page-line);
  padding-bottom: 4px;
  margin-bottom: 6px;
}

.day-title-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
}

.day-number-pill {
  background: var(--page-primary);
  color: white;
  font-size: 0.9rem;
  font-weight: 900;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.day-name-text {
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--page-text);
}

.day-doodles-bar {
  display: flex;
  gap: 4px;
  font-size: 0.8rem;
  opacity: 0.6;
}

.day-writing-lines {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  background-image: repeating-linear-gradient(
    transparent,
    transparent 19px,
    var(--page-subline) 20px
  );
}

.todo-line {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 20px;
}

.todo-check-circle {
  width: 11px;
  height: 11px;
  border: 1.5px solid var(--page-primary);
  border-radius: 50%;
}

/* 第 8 格：每週筆記、Habit Tracker、待辦 */
.weekly-extra-card {
  background: var(--page-primary-soft);
  border: 2px dashed var(--page-primary);
  border-radius: 10px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.extra-card-title {
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--page-primary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.habit-tracker-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 700;
  margin: 2px 0;
}

.habit-dots {
  display: flex;
  gap: 4px;
}

.h-dot {
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--page-primary);
  border-radius: 50%;
  background: white;
}

/* 附錄選項頁數控制 */
.appendix-item-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.flex-1 {
  flex: 1;
}

.page-count-input-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
  background: #faf6f1;
  border: 1px solid #ebdcd0;
  border-radius: var(--ui-radius-sm);
  padding: 4px 8px;
}

.page-count-input {
  width: 44px;
  padding: 4px 6px;
  border: 1.5px solid #d5c3b6;
  border-radius: 6px;
  text-align: center;
  font-weight: bold;
  font-size: 0.88rem;
  color: var(--ui-text-dark);
}

.page-count-unit {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ui-text-muted);
}

/* ================== 5. 附錄方格與點陣頁 (加倍至 40px) ================== */
.page-grid-notes {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.grid-paper-body {
  flex: 1;
  background-color: #ffffff;
  border: 1.5px solid var(--page-border);
  border-radius: 8px;
  background-image: 
    linear-gradient(var(--page-line) 1.5px, transparent 1.5px),
    linear-gradient(90deg, var(--page-line) 1.5px, transparent 1.5px);
  background-size: 40px 40px; /* 格子加大 2 倍 (40px x 40px) */
  position: relative;
}

.dot-paper-body {
  flex: 1;
  background-color: #ffffff;
  border: 1.5px solid var(--page-border);
  border-radius: 8px;
  background-image: radial-gradient(var(--page-primary) 2.5px, transparent 2.5px);
  background-size: 40px 40px; /* 點陣間距加大 2 倍 (40px x 40px) */
}

/* ================== 字體切換 Class ================== */
.font-zen { font-family: var(--font-base) !important; }
.font-gaegu { font-family: var(--font-gaegu) !important; }
.font-kiwi { font-family: var(--font-kiwi) !important; }
.font-noto { font-family: var(--font-noto) !important; }

/* ========================================================
   列印與匯出 PDF 精準專用樣式 (@media print)
   ======================================================== */
@media print {
  /* 隱藏所有非列印介面 */
  .no-print,
  .app-header,
  .sidebar-panel,
  .preview-toolbar,
  .page-quick-nav {
    display: none !important;
  }

  *, *:before, *:after {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    color-adjust: exact !important;
  }

  html, body {
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
    height: auto !important;
    min-height: 100% !important;
    background: #ffffff !important;
    overflow: visible !important;
  }

  .app-container {
    display: block !important;
    width: 100% !important;
    height: auto !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: visible !important;
  }

  .preview-area,
  .pages-viewport {
    display: block !important;
    width: 100% !important;
    height: auto !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: visible !important;
    background: transparent !important;
  }

  .pages-canvas {
    display: block !important;
    width: 100% !important;
    height: auto !important;
    transform: none !important;
    gap: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .notebook-page {
    box-shadow: none !important;
    border-radius: 0 !important;
    margin: 0 auto !important;
    page-break-after: always !important;
    break-after: page !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
    position: relative !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  /* 直式精確尺寸 (210mm x 296.8mm 防止 0.1px 溢出) */
  .orientation-portrait .notebook-page {
    width: 210mm !important;
    height: 296.8mm !important;
    min-width: 210mm !important;
    max-width: 210mm !important;
    min-height: 296.8mm !important;
    max-height: 296.8mm !important;
    padding: 12mm 14mm !important;
  }

  /* 橫式精確尺寸 (297mm x 209.8mm 防止 0.1px 溢出) */
  .orientation-landscape .notebook-page {
    width: 297mm !important;
    height: 209.8mm !important;
    min-width: 297mm !important;
    max-width: 297mm !important;
    min-height: 209.8mm !important;
    max-height: 209.8mm !important;
    padding: 10mm 14mm !important;
  }

  /* 封面列印微調 */
  .page-cover .cover-content-wrap {
    padding: 10mm 5mm !important;
    height: 100% !important;
    box-sizing: border-box !important;
  }

  .cover-center-card {
    padding: 24px 20px !important;
  }

  .cover-illustration {
    font-size: 3.8rem !important;
    margin: 6px 0 !important;
  }

  .timetable-grid {
    height: calc(100% - 60px) !important;
  }

  .monthly-calendar-container {
    height: calc(100% - 60px) !important;
  }

  .weekly-body-grid {
    height: calc(100% - 60px) !important;
  }

  .page-footer-bar {
    position: absolute !important;
    bottom: 4mm !important;
    left: 14mm !important;
    right: 14mm !important;
  }
}