.wd-diary * { margin: 0; padding: 0; box-sizing: border-box; }
.wd-diary {
  --bg: #f5f5f7; --card-bg: #fff; --text: #1d1d1f; --text2: #86868b;
  --border: #e8e8ed; --border2: #d2d2d7; --toolbar-bg: #f0f0f2;
  --accent: #0071e3; --red: #ff4444; --amber: #ffaa00;
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg); color: var(--text);
  min-height: 100vh; position: relative;
  transition: background 0.2s, color 0.2s;
}
.wd-diary.wd-dark {
  --bg: #1c1c1e; --card-bg: #2c2c2e; --text: #f5f5f7; --text2: #98989d;
  --border: #38383a; --border2: #48484a; --toolbar-bg: #3a3a3c;
  --accent: #0a84ff;
}

.wd-overlay {
  position: fixed; inset: 0; z-index: 999999;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
}
.wd-box {
  background: var(--card-bg); border: 2px solid var(--red);
  border-radius: 16px; padding: 48px 32px; max-width: 440px;
  width: 90%; text-align: center; box-shadow: 0 0 60px rgba(255,0,0,0.1);
}
.wd-icon { font-size: 56px; margin-bottom: 16px; }
.wd-box h1 { color: var(--red); font-size: 24px; margin-bottom: 12px; font-weight: 700; }
.wd-box .wd-owner { color: var(--amber); font-size: 18px; font-weight: 600; margin-bottom: 16px; }
.wd-box p { color: var(--text2); font-size: 14px; line-height: 1.6; margin-bottom: 20px; }
.wd-hint { color: var(--amber); font-size: 14px; margin-bottom: 16px; font-style: italic; }
.wd-box input {
  width: 100%; padding: 12px; border: 1px solid var(--border2); border-radius: 10px;
  background: var(--card-bg); color: var(--text); font-size: 16px; text-align: center;
  outline: none; margin-bottom: 12px;
}
.wd-box input:focus { border-color: var(--red); }
.wd-error { color: var(--red); font-size: 13px; margin-bottom: 12px; display: none; }
.wd-box button {
  background: var(--red); color: #fff; border: none; border-radius: 10px;
  padding: 14px 40px; font-size: 16px; font-weight: 600; cursor: pointer; width: 100%;
}
.wd-box button:hover { background: #cc3333; }

.wd-content { display: none; height: 100vh; overflow: hidden; }
.wd-container {
  max-width: 960px; margin: 0 auto; padding: 12px 20px;
  height: 100vh; display: flex; flex-direction: column;
}
.wd-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 8px; flex-wrap: wrap; gap: 6px; flex-shrink: 0;
}
.wd-header h2 { font-size: 22px; font-weight: 700; }
.wd-badge {
  font-size: 11px; color: var(--text2); font-weight: 500;
  background: var(--toolbar-bg); padding: 3px 10px; border-radius: 20px;
}
.wd-master-select { display: none; }
.wd-master-select select {
  font-size: 11px; padding: 2px 6px; border-radius: 6px;
  border: 1px solid var(--border2); background: var(--card-bg); color: var(--text);
  cursor: pointer; max-width: 120px;
}
.wd-nav { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.wd-nav button, .wd-actions button {
  background: var(--card-bg); border: 1px solid var(--border2); border-radius: 6px;
  padding: 5px 10px; font-size: 12px; cursor: pointer; color: var(--text);
  line-height: 1.5;
}
.wd-nav button:hover, .wd-actions button:hover { background: var(--toolbar-bg); }
.wd-label { font-size: 12px; font-weight: 600; min-width: 130px; text-align: center; color: var(--text); }
.wd-number {
  font-size: 10px; color: var(--text2); font-weight: 500;
  background: var(--toolbar-bg); padding: 2px 6px; border-radius: 20px;
}
.wd-actions { display: flex; gap: 4px; }
.wd-actions .wd-export-txt { background: var(--accent); color: #fff; border-color: var(--accent); }
.wd-actions .wd-export-pdf { background: var(--red); color: #fff; border-color: var(--red); }
.wd-actions .wd-theme-btn { font-size: 16px; padding: 3px 8px; line-height: 1; }
.wd-actions .wd-logout-btn { font-size: 16px; padding: 3px 8px; line-height: 1; color: var(--red); background:none; border-color:var(--border2); }

.wd-toolbar {
  display: flex; align-items: center; gap: 4px; padding: 6px 10px;
  background: var(--toolbar-bg); border-radius: 8px; margin-bottom: 6px;
  flex-shrink: 0; flex-wrap: wrap; border: 1px solid var(--border);
}
.wd-toolbar button {
  background: none; border: 1px solid transparent; border-radius: 4px;
  padding: 4px 8px; font-size: 13px; cursor: pointer; color: var(--text); line-height: 1.3;
}
.wd-toolbar button:hover { background: var(--card-bg); border-color: var(--border2); }
.wd-tb-sep { width: 1px; height: 20px; background: var(--border2); margin: 0 4px; }

.wd-card {
  flex: 1; background: var(--card-bg); border-radius: 10px; padding: 12px 16px;
  display: flex; flex-direction: column; min-height: 0;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05); border: 1px solid var(--border);
}
.wd-card.wd-today { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.wd-card-header {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 8px; border-bottom: 1px solid var(--border);
  margin-bottom: 8px; flex-shrink: 0; flex-wrap: wrap; gap: 6px;
}
.wd-range { font-size: 15px; font-weight: 700; letter-spacing: -0.2px; }
.wd-range .wd-month { color: var(--text2); font-weight: 500; font-size: 13px; }

.wd-mood { display: flex; align-items: center; gap: 4px; }
.wd-mood-label { font-size: 11px; color: var(--text2); margin-right: 4px; }
.wd-mood-option {
  font-size: 20px; cursor: pointer; opacity: 0.4; transition: opacity 0.15s; line-height: 1;
  padding: 2px;
}
.wd-mood-option:hover { opacity: 0.8; }
.wd-mood-option.wd-mood-active { opacity: 1; transform: scale(1.2); }

.wd-days {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px;
  padding-bottom: 8px; border-bottom: 1px solid var(--border); margin-bottom: 8px; flex-shrink: 0;
}
.wd-day-item { text-align: center; font-size: 12px; }
.wd-day-name { color: var(--text2); font-weight: 500; font-size: 10px; text-transform: uppercase; letter-spacing: 0.3px; }
.wd-day-num { color: var(--text); font-weight: 600; font-size: 13px; }
.wd-day-item.wd-today .wd-day-num, .wd-day-item.wd-today .wd-day-name { color: var(--accent); }

.wd-editor {
  flex: 1; border: none; resize: none; font-size: 16px; line-height: 1.7;
  font-family: inherit; color: var(--text); background: transparent; outline: none;
  min-height: 0; overflow-y: auto; padding: 4px 0;
}
.wd-editor:empty::before { content: attr(placeholder); color: #c7c7cc; pointer-events: none; }
.wd-editor ul, .wd-editor ol { padding-left: 24px; }
.wd-editor h3 { font-size: 1.3em; margin: 8px 0 4px; }

.wd-footer {
  display: flex; justify-content: space-between; align-items: center;
  flex-shrink: 0; padding-top: 8px; border-top: 1px solid var(--border);
  margin-top: 8px; flex-wrap: wrap; gap: 6px;
}
.wd-stats { font-size: 11px; color: var(--text2); }
.wd-save-status { font-size: 11px; font-weight: 600; min-width: 50px; text-align: center; }
.wd-save-status.wd-saving { color: var(--amber); }
.wd-save-status.wd-saved { color: #34c759; }
.wd-save-status.wd-failed { color: var(--red); }
.wd-save-btn {
  background: var(--accent); color: #fff; border: none; border-radius: 6px;
  padding: 5px 14px; font-size: 12px; font-weight: 600; cursor: pointer;
  line-height: 1.5; white-space: nowrap;
}
.wd-save-btn:hover { opacity: 0.85; }
.wd-save-btn:disabled { opacity: 0.5; cursor: default; }
.wd-tags { flex: 1; min-width: 120px; }
.wd-tags input {
  width: 100%; border: 1px solid var(--border2); border-radius: 6px;
  padding: 4px 8px; font-size: 12px; background: var(--card-bg); color: var(--text); outline: none;
}
.wd-tags input:focus { border-color: var(--accent); }
.wd-font-size { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.wd-font-size label { font-size: 11px; color: var(--text2); }
.wd-font-size input[type=range] { width: 70px; height: 4px; cursor: pointer; }

@media (max-width: 768px) {
  .wd-box { padding: 24px 16px; }
  #wdSignupForm input { font-size: 14px; padding: 10px; }
  .wd-header h2 { font-size: 18px; }
  .wd-nav { gap: 4px; }
  .wd-nav button, .wd-actions button { padding: 4px 8px; font-size: 11px; }
  .wd-label { min-width: 80px; font-size: 11px; }
  .wd-card { padding: 8px 10px; }
  .wd-range { font-size: 14px; }
  .wd-mood-option { font-size: 18px; }
  .wd-days { gap: 2px; }
  .wd-day-name { font-size: 9px; }
  .wd-day-num { font-size: 11px; }
  .wd-editor { font-size: 15px; }
  .wd-container { padding: 8px 12px; }
  .wd-toolbar { padding: 4px 6px; gap: 2px; }
  .wd-toolbar button { font-size: 12px; padding: 3px 6px; }
  .wd-footer { flex-direction: column; align-items: stretch; gap: 4px; }
  .wd-footer > .wd-save-status { order: 1; }
  .wd-footer > .wd-save-btn { order: 1; }
  .wd-font-size { justify-content: flex-end; }
}

.wd-pw-wrap { position: relative; display: block; width: 100%; margin-bottom: 12px; }
.wd-pw-wrap input { margin-bottom: 0; padding-right: 36px; }
.wd-pw-wrap button.wd-pw-btn {
  position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; font-size: 16px; line-height: 1;
  padding: 6px; opacity: 0.5; color: var(--text2); width: auto; border-radius: 4px;
  font-weight: 400;
}
.wd-pw-wrap button.wd-pw-btn:hover { opacity: 1; background: none; color: var(--text); }

@media (max-width: 480px) {
  .wd-header { flex-direction: column; align-items: stretch; text-align: center; gap: 4px; }
  .wd-nav { justify-content: center; }
  .wd-actions { justify-content: center; }
  .wd-box { padding: 24px 16px; }
  .wd-box h1 { font-size: 20px; }
}