* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Noto Sans KR", "Malgun Gothic", sans-serif;
  background: #f5f6f8;
  color: #1b1f24;
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

header h1 { font-size: 26px; margin: 0 0 8px; font-weight: 700; }
.subtitle { margin: 0 0 24px; color: #5a6271; font-size: 14px; }
.subtitle a { color: #6366f1; text-decoration: underline; text-underline-offset: 2px; }
.subtitle a:hover { color: #4f52e6; }

.card {
  background: #fff;
  border: 1px solid #e4e8ef;
  border-radius: 14px;
  padding: 22px;
  margin-bottom: 16px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.two-col .card { margin-bottom: 0; }
@media (max-width: 780px) {
  .two-col { grid-template-columns: 1fr; }
}

.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; color: #5a6271; font-weight: 500; }
.field input[type="text"],
.field input[type="datetime-local"] {
  padding: 10px 12px;
  border: 1px solid #d0d5de;
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
  font-family: inherit;
  color: #1b1f24;
}
.field input:focus {
  outline: none;
  border-color: #3f6df9;
  box-shadow: 0 0 0 3px rgba(63,109,249,0.15);
}
.field-hint { font-size: 12px; color: #8a94a4; margin-top: 4px; }

.ref-time-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}
.ref-time-input-wrap {
  position: relative;
  flex: 1;
  display: flex;
}
.ref-time-input-wrap input { flex: 1; padding-right: 90px; }
.current-time-badge {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  color: #f59e0b;
  pointer-events: none;
  background: #fff;
  padding: 0 4px;
}

/* 기간 라디오 */
.duration {
  border: 1px solid #eef0f4;
  border-radius: 10px;
  padding: 14px 16px;
  margin: 16px 0 0;
}
.duration legend { font-size: 13px; color: #5a6271; font-weight: 500; padding: 0 6px; }
.radio {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 4px;
  cursor: pointer;
  font-size: 14px;
}
.radio input { margin-top: 5px; accent-color: #3f6df9; }
.radio:has(input:disabled) { opacity: 0.5; cursor: not-allowed; }
.radio > span { display: flex; flex-direction: column; gap: 2px; }

/* 버튼 */
.btn {
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 120ms, border-color 120ms, color 120ms, box-shadow 120ms;
}
.btn-primary {
  background: #6366f1;
  color: #fff;
  border-color: #6366f1;
  font-weight: 500;
}
.btn-primary:hover:not(:disabled) { background: #4f52e6; border-color: #4f52e6; }
.btn-primary.is-pressed,
.btn-primary.is-pressed:hover {
  background: #3f42c4;
  border-color: #3f42c4;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.18);
  transform: translateY(1px);
}
.btn-primary:disabled { background: #c7cfde; border-color: #c7cfde; cursor: not-allowed; color: #fff; }
.btn-ghost {
  border: 1px solid #d0d5de;
  background: #fff;
  color: #1b1f24;
}
.btn-ghost:hover:not(:disabled) { border-color: #6366f1; color: #6366f1; }
.btn-ghost:disabled {
  background: #f5f6f8;
  border-color: #e4e8ef;
  color: #a8b0bd;
  cursor: not-allowed;
}
.btn-block { width: 100%; padding: 12px; font-size: 15px; font-weight: 500; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn.copied,
.btn.copied:hover,
.btn.copied:hover:not(:disabled) {
  background: #1f7a3d;
  border-color: #1f7a3d;
  color: #fff;
}

/* divider */
.divider {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #8a94a4;
  font-size: 12px;
  margin: 18px 0 14px;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #e4e8ef;
}

/* dropzone */
.dropzone {
  border: 2px dashed #c2cad6;
  border-radius: 12px;
  padding: 38px 20px;
  text-align: center;
  cursor: pointer;
}
.dropzone:hover, .dropzone:focus, .dropzone.is-dragging {
  border-color: #6366f1;
  background: #f1f3ff;
  outline: none;
}
.dropzone-icon { margin-bottom: 8px; color: #8a94a4; display: flex; justify-content: center; }
.dropzone:hover .dropzone-icon, .dropzone.is-dragging .dropzone-icon { color: #6366f1; }
.dropzone-text { font-size: 14px; line-height: 1.8; }
.dropzone-text kbd {
  display: inline-block;
  padding: 2px 6px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  background: #f0f2f6;
  border: 1px solid #d0d5de;
  border-radius: 4px;
  box-shadow: 0 1px 0 #d0d5de;
  margin: 0 2px;
}

/* status */
.status {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  margin-bottom: 16px;
}
.status.is-info    { background: #eff3ff; color: #234bbf; }
.status.is-success { background: #e8f6ee; color: #1f7a3d; }
.status.is-error   { background: #fdecec; color: #b32020; }

/* result — 강조 카드 */
.result-section {
  border: 2px solid #6366f1;
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.12);
}
.result-section .result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 8px;
}
.result-header h2 { margin: 0; font-size: 16px; font-weight: 700; }
.result-actions { display: flex; gap: 8px; align-items: stretch; }

.save-wrap { position: relative; }

.popover {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 100;
  width: 320px;
  background: #fff;
  border: 1px solid #e4e8ef;
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.popover::before {
  content: '';
  position: absolute;
  top: -6px;
  right: 28px;
  width: 12px;
  height: 12px;
  background: #fff;
  border-left: 1px solid #e4e8ef;
  border-top: 1px solid #e4e8ef;
  transform: rotate(45deg);
}
.popover-title { margin: 0 0 4px; font-size: 14px; font-weight: 600; }
.popover-label { font-size: 12px; color: #5a6271; font-weight: 500; }
.popover input[type="text"] {
  padding: 9px 11px;
  border: 1px solid #d0d5de;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
}
.popover input[type="text"]:focus {
  outline: none;
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}
.popover-hint {
  margin: 0;
  font-size: 12px;
  color: #5a6271;
  background: #f5f6f8;
  padding: 8px 10px;
  border-radius: 6px;
}
.popover-hint strong { color: #1b1f24; }
.popover-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 6px;
}

.result-text {
  margin: 0;
  padding: 16px 18px;
  background: #fafbfc;
  border: 1px solid #eef0f4;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.85;
  white-space: pre-wrap;
  font-family: "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.02em;
}

.debug { margin-top: 14px; font-size: 13px; color: #5a6271; }
.debug summary { cursor: pointer; padding: 6px 0; color: #6366f1; }
.debug table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.debug th, .debug td {
  border-bottom: 1px solid #eef0f4;
  padding: 6px 8px;
  text-align: left;
  font-size: 12px;
  vertical-align: top;
}
.debug-table .org-cell {
  background: #f9fafc;
  border-right: 1px solid #eef0f4;
  vertical-align: middle;
}
.debug-table .org-cell small { color: #8a94a4; font-size: 11px; }
/* 대표자 행은 '대표' 배지로만 구분 — 배경색 없음 */
.debug-table .rep-badge {
  display: inline-block;
  margin-left: 4px;
  padding: 1px 6px;
  font-size: 10px;
  background: #6366f1;
  color: #fff;
  border-radius: 4px;
  vertical-align: 1px;
}
.debug-table .mono-cell {
  font-family: "SFMono-Regular", Consolas, monospace;
  color: #5a6271;
}

/* history */
.history-section .history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.history-section h2 { margin: 0; font-size: 16px; font-weight: 700; }
.history-list { display: flex; flex-direction: column; gap: 10px; }
.history-list .empty { color: #8a94a4; font-size: 13px; margin: 4px 0; }
.history-item {
  border: 1px solid #eef0f4;
  border-radius: 10px;
  padding: 12px 14px;
  background: #fafbfc;
}
.history-meta {
  font-size: 14px;
  color: #5a6271;
  margin-bottom: 6px;
  line-height: 1.6;
}
.history-meta strong { color: #1b1f24; font-size: 14px; margin-right: 8px; }
.accent-latest { color: #f59e0b; }
.history-text {
  margin: 8px 0 0;
  padding: 12px;
  background: #fff;
  border: 1px solid #eef0f4;
  border-radius: 8px;
  white-space: pre-wrap;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  color: #1b1f24;
  line-height: 1.75;
}

.history-toggle { margin-top: 2px; }
.history-toggle summary {
  cursor: pointer;
  color: #6366f1;
  font-size: 12px;
  padding: 4px 0;
  list-style: none;
  user-select: none;
}
.history-toggle summary::-webkit-details-marker { display: none; }
.history-toggle summary::marker { display: none; }
.history-toggle summary::before { content: '▶ 보고 내용 보기'; }
.history-toggle[open] summary::before { content: '▼ 접기'; }
.history-footer {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed #e4e8ef;
  font-size: 12px;
  color: #8a94a4;
  text-align: right;
}

.hidden { display: none !important; }

/* busy state: UI 잠금 */
body.is-busy .dropzone,
body.is-busy .duration,
body.is-busy .ref-time-row input,
body.is-busy #referenceTime {
  pointer-events: none;
  opacity: 0.55;
}
body.is-busy .btn:disabled { cursor: wait; }
body.is-busy .status.is-info::after {
  content: '';
  display: inline-block;
  width: 10px; height: 10px;
  margin-left: 10px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* flatpickr — 시간 프리셋 버튼 영역 */
.fp-time-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 8px;
  border-top: 1px solid #e4e8ef;
  background: #fafbfc;
}
.fp-preset-btn {
  flex: 1;
  min-width: 48px;
  padding: 6px 8px;
  border: 1px solid #d0d5de;
  background: #fff;
  color: #1b1f24;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
}
.fp-preset-btn:hover { border-color: #6366f1; color: #6366f1; }

/* flatpickr 시간 입력 스피너 크기를 좀 더 크게 */
.flatpickr-time input {
  font-size: 16px !important;
  height: 40px !important;
}
.flatpickr-time .flatpickr-time-separator { font-size: 18px; }