@import url("https://fonts.googleapis.com/css2?family=Pixelify+Sans:wght@400;500;600;700&family=ZCOOL+KuaiLe&display=swap");

* {
  box-sizing: border-box;
}

:root {
  --deep-green: #315c28;
  --dark-green: #21421d;
  --soft-green: #4e7b3a;
  --gold: #d6a92f;
  --gold-light: #f2d35f;
  --paper: #f7dfaa;
  --paper-light: #ffecc3;
  --paper-dark: #d9b978;
  --ink: #3f5f2b;
  --brown: #6f4b25;
  --shadow: rgba(39, 55, 24, 0.35);
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  min-height: 100vh;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.08) 0 8px, transparent 8px 56px),
    linear-gradient(rgba(255,255,255,0.05) 0 8px, transparent 8px 56px),
    #d7c38d;
  background-size: 96px 96px;
  font-family: "Pixelify Sans", "Courier New", "Microsoft YaHei", monospace;
  color: var(--ink);
  image-rendering: pixelated;
}

button,
input,
textarea {
  font-family: inherit;
}

.app {
  min-height: 100vh;
  padding: 24px 18px 34px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.screen {
  display: none;
  width: 100%;
}

.screen.active {
  display: block;
}

/* =========================
   封面：合上的书
========================== */

.closed-book {
  position: relative;
  width: min(520px, 88vw);
  aspect-ratio: 3 / 4;
  margin: 0 auto;
  filter: drop-shadow(10px 12px 0 rgba(34, 55, 25, 0.25));
}

.cover-bg {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  image-rendering: pixelated;
}

/* 可替换 OC 小人 */
.cover-oc {
  position: absolute;
  left: 50%;
  bottom: 7%;
  width: 56%;
  max-height: 54%;
  transform: translateX(-50%);
  object-fit: contain;
  image-rendering: pixelated;
  pointer-events: none;
}

/* =========================
   打开的书整体
========================== */

.open-book {
  position: relative;
  width: min(1120px, 96vw);
  height: min(720px, 76vh);
  min-height: 620px;
  margin: 0 auto;

  display: grid;
  grid-template-columns: 1fr 20px 1fr;

  background: var(--deep-green);
  border: 10px solid var(--dark-green);
  box-shadow:
    0 0 0 5px #173015,
    12px 14px 0 rgba(36, 52, 25, 0.35);

  image-rendering: pixelated;
}

/* 书页中间的阴影/书脊 */
.book-gutter {
  background:
    linear-gradient(90deg,
      rgba(20, 35, 15, 0.55),
      rgba(255,255,255,0.12),
      rgba(20, 35, 15, 0.55)
    );
  box-shadow:
    inset 4px 0 0 rgba(0,0,0,0.15),
    inset -4px 0 0 rgba(0,0,0,0.15);
}

/* 每一页 */
.book-page {
  position: relative;
  margin: 22px;
  padding: 28px;
  overflow: hidden;

  background:
    radial-gradient(circle at 50% 20%, rgba(255,255,255,0.22), transparent 38%),
    linear-gradient(90deg, rgba(255,255,255,0.12) 0 2px, transparent 2px 60px),
    var(--paper);

  border: 5px solid var(--paper-dark);
  box-shadow:
    inset 0 0 0 5px var(--paper-light),
    inset 0 0 0 9px rgba(110, 77, 31, 0.15);

  image-rendering: pixelated;
}

/* 书页边边：能看到深绿色硬壳 */
.book-page::before {
  content: "";
  position: absolute;
  inset: -12px;
  border: 12px solid var(--deep-green);
  pointer-events: none;
  z-index: 0;
}

.book-page > * {
  position: relative;
  z-index: 1;
}

.left-page {
  border-right-color: #c6a25c;
}

.right-page {
  border-left-color: #c6a25c;
}

/* 页面内容标题 */
.page-title {
  margin: 0 0 16px;
  text-align: center;
  font-size: 30px;
  color: var(--deep-green);
  letter-spacing: 2px;
  text-shadow: 2px 2px 0 #ffecc4;
}

.page-subtitle {
  margin: 0 0 14px;
  text-align: center;
  font-size: 18px;
  color: var(--brown);
}

/* =========================
   书外翻页按钮
========================== */

.book-controls {
  width: min(1120px, 96vw);
  margin: 20px auto 0;
  display: flex;
  justify-content: center;
  gap: 28px;
}

.page-btn,
.action-btn {
  border: 4px solid var(--dark-green);
  background: var(--paper-light);
  color: var(--dark-green);
  padding: 10px 20px;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  border-radius: 0;

  box-shadow:
    4px 4px 0 var(--gold),
    inset 0 0 0 3px #fff6d8;

  image-rendering: pixelated;
}

.page-btn:hover,
.action-btn:hover {
  transform: translate(1px, 1px);
  box-shadow:
    3px 3px 0 var(--gold),
    inset 0 0 0 3px #fff6d8;
}

.page-btn:active,
.action-btn:active {
  transform: translate(4px, 4px);
  box-shadow:
    0 0 0 var(--gold),
    inset 0 0 0 3px #fff6d8;
}

/* =========================
   签到日历页
========================== */

.calendar-head {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 14px;
}

.month-pill,
.year-pill {
  border: 3px solid var(--deep-green);
  background: #fff2c6;
  padding: 6px 14px;
  box-shadow: 3px 3px 0 var(--gold);
  font-size: 19px;
  font-weight: 700;
}

.week-row,
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
}

.week-row {
  margin-bottom: 6px;
}

.week-row div {
  text-align: center;
  padding: 6px 0;
  border: 2px solid var(--deep-green);
  background: #f5d992;
  color: var(--dark-green);
  font-size: 14px;
  font-weight: 700;
}

.day-cell,
.blank-cell {
  min-height: 70px;
  border: 2px solid #b9893b;
  background: #fff0be;
  position: relative;
  overflow: hidden;
}

.day-cell {
  cursor: pointer;
}

.day-cell:hover {
  background: #ffe7a7;
}

.blank-cell {
  background: rgba(255, 241, 194, 0.45);
  border-style: dashed;
}

.day-number {
  position: absolute;
  top: 5px;
  left: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--brown);
  z-index: 3;
}

.day-cell.checked {
  background: #dce9b6;
  border-color: var(--deep-green);
}

.stamp-image {
  position: absolute;
  width: 52px;
  left: 50%;
  top: 54%;
  transform: translate(-50%, -50%);
  image-rendering: pixelated;
  pointer-events: none;
}

.month-count {
  margin-top: 14px;
  padding: 10px;
  border: 3px solid var(--deep-green);
  background: #fff2c6;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  box-shadow: 3px 3px 0 var(--gold);
}

/* =========================
   Monthly Poem 页
========================== */

.poem-box {
  height: calc(100% - 50px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.poem-month {
  font-size: 20px;
  color: var(--gold);
  margin-bottom: 8px;
}

.poem-title {
  font-size: 24px;
  color: var(--deep-green);
  margin-bottom: 4px;
}

.poem-author {
  font-size: 17px;
  color: var(--brown);
  margin-bottom: 22px;
}

.poem-text {
  white-space: pre-line;
  font-size: 22px;
  line-height: 1.75;
  color: #4f5e2d;
}

/* =========================
   今日观察表单
========================== */

.observe-form {
  display: grid;
  gap: 11px;
}

.field {
  display: grid;
  gap: 4px;
}

.field label {
  font-size: 18px;
  font-weight: 700;
  color: var(--deep-green);
}

.field input,
.field textarea {
  width: 100%;
  border: 3px solid var(--deep-green);
  background: #fff3c7;
  color: var(--brown);
  padding: 8px 10px;
  font-size: 17px;
  outline: none;
  border-radius: 0;
  box-shadow: inset 3px 3px 0 rgba(112, 82, 35, 0.12);
}

.field textarea {
  min-height: 110px;
  resize: vertical;
  line-height: 1.45;
}

.form-buttons {
  margin-top: 8px;
  display: flex;
  justify-content: center;
  gap: 12px;
}

/* =========================
   今日卡片
========================== */

.card-preview-wrap {
  height: calc(100% - 58px);
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 12px;
}

.today-card {
  width: 100%;
  height: 100%;
  padding: 16px;
  background: #fff2c6;
  border: 4px solid var(--deep-green);
  box-shadow:
    inset 0 0 0 4px #fff9df,
    5px 5px 0 var(--gold);
  overflow: hidden;
}

.card-image-box {
  width: 100%;
  height: 42%;
  border: 3px solid var(--deep-green);
  background: #e9d39a;
  overflow: hidden;
  margin-bottom: 12px;
}

.card-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  image-rendering: pixelated;
  display: block;
}

.card-content {
  font-size: 16px;
  line-height: 1.45;
  color: var(--brown);
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: break-word;
}

.card-content strong {
  color: var(--deep-green);
}

.export-row {
  display: flex;
  justify-content: center;
}

/* 空白页 */
.blank-note {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: rgba(63, 95, 43, 0.55);
  font-size: 24px;
  line-height: 1.6;
}

/* =========================
   响应式
========================== */

@media (max-width: 900px) {
  .app {
    align-items: flex-start;
  }

  .open-book {
    height: auto;
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .book-gutter {
    height: 16px;
  }

  .book-page {
    min-height: 640px;
  }

  .book-controls {
    flex-wrap: wrap;
  }
}

@media (max-width: 560px) {
  .book-page {
    margin: 12px;
    padding: 18px;
  }

  .page-title {
    font-size: 24px;
  }

  .day-cell,
  .blank-cell {
    min-height: 54px;
  }

  .stamp-image {
    width: 38px;
  }

  .poem-text {
    font-size: 18px;
  }

  .page-btn,
  .action-btn {
    font-size: 17px;
    padding: 8px 14px;
  }
}