@font-face {
  font-family: 'JingXiaoPeng';
  src: url('../fonts/jingxiaopeng.woff2') format('woff2'),
       url('../fonts/jingxiaopeng.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: #f5f0eb;
  color: #333;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  text-align: center;
  padding: 2rem 1rem 1rem;
  background: #fff;
  border-bottom: 1px solid #e0d8d0;
}

header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #2c2c2c;
  letter-spacing: 0.1em;
}

header .subtitle {
  margin-top: 0.4rem;
  color: #888;
  font-size: 0.9rem;
}

main {
  flex: 1;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

/* Search */
.search-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.input-wrapper {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.clear-input {
  position: absolute;
  right: 0.75rem;
  background: none;
  border: none;
  color: #bbb;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color 0.2s;
  display: none;
}

.clear-input:hover {
  color: #666;
}

.clear-input.visible {
  display: block;
}

#charInput {
  flex: 1;
  width: 100%;
  font-size: 1.2rem;
  padding: 0.75rem 2.5rem 0.75rem 1rem;
  border: 2px solid #d4c9be;
  border-radius: 8px;
  outline: none;
  text-align: center;
  background: #fff;
  transition: border-color 0.2s;
}

#charInput:focus {
  border-color: #8b7355;
}

#searchBtn {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  background: #5a4a3a;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
}

#searchBtn:hover {
  background: #3d3228;
}

/* Compare Area */
.compare-area {
  margin-bottom: 2rem;
}

.current-text {
  text-align: center;
  margin-bottom: 1rem;
}

.current-text span {
  display: inline-block;
  font-size: 1.3rem;
  font-weight: 600;
  color: #5a4a3a;
  padding: 0.3rem 1rem;
  background: #fff;
  border-radius: 6px;
  border: 1px solid #e8e0d8;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
}

.compare-card {
  background: #fff;
  border-radius: 12px;
  padding: 1.2rem;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  border: 1px solid #e8e0d8;
}

.compare-card h2 {
  font-size: 0.85rem;
  color: #888;
  font-weight: 500;
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
}

.char-display {
  width: 100%;
  aspect-ratio: 1;
  max-width: 260px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 4px;
  position: relative;
  cursor: pointer;
  overflow: hidden;
  transition: box-shadow 0.2s;
  padding: 0.75rem;
}

.char-display:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.char-display img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.jxp-char {
  font-family: 'JingXiaoPeng', cursive;
  font-size: 8.5rem;
  line-height: 1.2;
  color: #000;
  user-select: none;
  word-break: break-all;
}

/* For multi-char, reduce font size */
.jxp-char.multi-char {
  font-size: 6rem;
}

.jxp-char.multi-char.len-3 {
  font-size: 4.5rem;
}

.jxp-char.multi-char.len-4 {
  font-size: 3.5rem;
}

.placeholder-text {
  color: #ccc;
  font-size: 1rem;
}

/* Related Words */
.related-section {
  margin-bottom: 2rem;
  padding: 1rem 1.5rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.related-section h3 {
  font-size: 0.85rem;
  color: #999;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.related-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.related-tags span {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  background: #f5f0eb;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.related-tags span:hover {
  background: #e8dfd5;
  transform: translateY(-1px);
}

.related-tags span.active {
  background: #5a4a3a;
  color: #fff;
}

/* History */
.history-section {
  padding: 1rem 1.5rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.history-section h3 {
  font-size: 0.85rem;
  color: #999;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.history-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.history-tags span {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  background: #f5f0eb;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}

.history-tags span:hover {
  background: #e8dfd5;
}

.clear-history {
  margin-top: 0.75rem;
  background: none;
  border: none;
  color: #bbb;
  font-size: 0.8rem;
  cursor: pointer;
}

.clear-history:hover {
  color: #999;
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.lightbox.active {
  display: flex;
}

.lightbox-content {
  position: relative;
  max-width: 82vw;
  max-height: 82vh;
}

.lightbox-content img {
  max-width: 82vw;
  max-height: 78vh;
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: -2rem;
  right: 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
}

/* Footer */
footer {
  text-align: center;
  padding: 1rem;
  color: #bbb;
  font-size: 0.75rem;
}

/* Mode Selection */
.mode-select {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background: #f5f0eb;
}

.mode-select-inner {
  text-align: center;
  max-width: 480px;
  width: 100%;
  margin-top: -15vh;
}

.mode-select-inner h1 {
  font-size: 2rem;
  font-weight: 700;
  color: #2c2c2c;
  letter-spacing: 0.1em;
  margin-bottom: 0.4rem;
}

.mode-select-inner .subtitle {
  color: #888;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.mode-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mode-btn {
  background: #fff;
  border: 2px solid #e0d8d0;
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  transition: all 0.25s;
  text-align: center;
}

.mode-btn:hover {
  border-color: #8b7355;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.mode-btn .mode-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #5a4a3a;
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.mode-btn h3 {
  font-size: 1.15rem;
  color: #2c2c2c;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.mode-btn p {
  font-size: 0.85rem;
  color: #999;
}

/* App Wrapper */
.app-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Mode Tabs */
.mode-tabs {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  gap: 0;
  background: #fff;
  border-bottom: 1px solid #e0d8d0;
  padding: 0.5rem 1rem;
}

.tab-btn {
  padding: 0.6rem 1.5rem;
  font-size: 0.95rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: #999;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
}

.tab-btn:hover {
  color: #666;
}

.tab-btn.active {
  color: #5a4a3a;
  border-bottom-color: #5a4a3a;
  font-weight: 600;
}

/* 集字模式 */
.jizi-area {
  margin-bottom: 2rem;
}

.jizi-grid {
  display: grid;
  grid-template-columns: repeat(20, 1fr);
  gap: 2px;
  background: #fff;
  border-radius: 8px;
  padding: 4px;
  border: 1px solid #e0d8d0;
}

.jizi-cell {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #faf8f5;
  border: 1px solid #f0ebe5;
  border-radius: 2px;
  font-family: 'JingXiaoPeng', cursive;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  color: #000;
  cursor: pointer;
  user-select: none;
  transition: background 0.15s;
}

.jizi-cell:hover {
  background: #f0e8dc;
}

.jizi-cell.empty {
  background: #f9f7f4;
  border-color: transparent;
  cursor: default;
}

.jizi-cell.empty:hover {
  background: #f9f7f4;
}

/* Mobile */
@media (max-width: 600px) {
  header {
    padding: 1.25rem 1rem 0.75rem;
  }

  header h1 {
    font-size: 1.4rem;
  }

  header .subtitle {
    font-size: 0.8rem;
  }

  main {
    padding: 1rem;
  }

  .search-bar {
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
  }

  #charInput {
    font-size: 1rem; /* prevent iOS zoom */
    padding: 0.75rem 1rem;
    text-align: left;
  }

  #searchBtn {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
  }

  .compare-area {
    margin-bottom: 0.5rem;
  }

  .current-text {
    margin-bottom: 0.5rem;
  }

  .compare-grid {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .compare-card {
    padding: 0.4rem 0.5rem;
    border-radius: 8px;
  }

  .compare-card h2 {
    font-size: 0.85rem;
    font-weight: 600;
    color: #5a4a3a;
    margin-bottom: 0.3rem;
  }

  .compare-card h2 span {
    font-size: 0.65rem;
    color: #aaa;
  }

  .char-display {
    max-width: 160px;
    padding: 0;
    aspect-ratio: auto;
    border: none;
    background: transparent;
    overflow: visible;
  }

  .char-display img {
    max-height: 160px;
    width: auto;
    border-radius: 4px;
    border: 1px solid #eee;
  }

  .jxp-char {
    max-width: 240px;
    font-size: 6.5rem;
    overflow: visible;
  }

  .jxp-char.multi-char {
    font-size: 4.5rem;
  }

  .jxp-char.multi-char.len-3 {
    font-size: 3.5rem;
  }

  .jxp-char.multi-char.len-4 {
    font-size: 2.8rem;
  }

  .related-section,
  .history-section {
    padding: 0.75rem 1rem;
    margin-bottom: 1.25rem;
  }

  .related-tags,
  .history-tags {
    gap: 0.6rem;
  }

  .related-tags span,
  .history-tags span {
    padding: 0.5rem 0.9rem;
    font-size: 1rem;
  }

  .lightbox-content {
    max-width: 92vw;
    max-height: 92vh;
  }

  .lightbox-content img {
    max-width: 92vw;
    max-height: 88vh;
  }

  .lightbox-close {
    top: -2.5rem;
    right: -0.5rem;
    font-size: 2.5rem;
    padding: 0.5rem;
  }

  .mode-select-inner h1 {
    font-size: 1.5rem;
  }

  .mode-btn {
    padding: 1.25rem 1rem;
  }

  .mode-btn .mode-icon {
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
  }

  .mode-tabs {
    padding: 0.4rem 0.75rem;
  }

  .tab-btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }

  .jizi-grid {
    grid-template-columns: repeat(8, 1fr);
    gap: 1px;
    padding: 2px;
  }

  .jizi-cell {
    font-size: clamp(1.2rem, 6.5vw, 1.9rem);
  }
}