/* ── reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── base ── */
:root {
  --blue:       #185FA5;
  --blue-light: #E6F1FB;
  --blue-mid:   #378ADD;
  --blue-dark:  #0C447C;
  --green:      #3B6D11;
  --green-light:#EAF3DE;
  --green-dark: #27500A;
  --red:        #A32D2D;
  --red-light:  #FCEBEB;
  --red-dark:   #791F1F;
  --amber-light:#FAEEDA;
  --amber-dark: #633806;
  --gray-50:    #F1EFE8;
  --gray-100:   #D3D1C7;
  --gray-400:   #888780;
  --gray-600:   #5F5E5A;
  --gray-800:   #444441;
  --border:     rgba(0,0,0,0.12);
  --border-md:  rgba(0,0,0,0.22);
  --radius-md:  8px;
  --radius-lg:  12px;
  --font:       -apple-system, BlinkMacSystemFont, 'Segoe UI', "Noto Sans KR", "Malgun Gothic", sans-serif;
}

body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  color: #1a1a1a;
  background: #f5f4f0;
  min-height: 100vh;
  padding: 2rem 1rem;
}

/* ── layout ── */
.app {
  max-width: 980px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 0.5px solid var(--border);
  padding: 2rem 2.5rem;
}

.app-header { margin-bottom: 2rem; }
.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.back-link {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--blue);
  text-decoration: none;
  font-weight: 600;
}
.back-link:hover { text-decoration: underline; }
.header-top .back-link { margin-bottom: 0; }
.app-header h1 { font-size: 20px; font-weight: 600; color: #111; margin-bottom: 6px; }
.app-desc { font-size: 13px; color: var(--gray-600); line-height: 1.7; }

.section { margin-bottom: 1.5rem; }
.section-title { font-size: 14px; font-weight: 600; color: #111; margin-bottom: 8px; letter-spacing: -0.01em; }
.section-hint { font-size: 12px; color: var(--gray-600); margin-bottom: 1rem; line-height: 1.7; }

.divider { height: 1px; background: var(--border); margin: 2rem 0; }

/* ── slots ── */
.slots-wrap {
  display: flex;
  align-items: flex-start;
  gap: 0;
  overflow-x: auto;
  padding-bottom: 10px;
  padding-top: 4px;
}

.slot-col { display: flex; flex-direction: column; align-items: center; flex-shrink: 0; }

.slot-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 130px;
  flex-shrink: 0;
}
.arrow-line {
  width: 26px;
  height: 2px;
  background: var(--gray-100);
  position: relative;
}
.arrow-line::after {
  content: '';
  position: absolute;
  right: -6px;
  top: -4px;
  border: 5px solid transparent;
  border-left-color: var(--gray-100);
}

.slot {
  width: 148px;
  border: 1.5px dashed var(--border-md);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  background: #fff;
  position: relative;
}
.slot:hover { border-color: var(--blue-mid); }
.slot.loaded { border-style: solid; border-color: var(--green); }
.slot input[type="file"] { display: none; }

.slot-inner {
  width: 148px;
  height: 130px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px;
}

.slot-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--gray-50);
  border: 0.5px solid var(--border-md);
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  flex-shrink: 0;
}
.slot.loaded .slot-num { background: var(--green); color: #fff; border-color: var(--green); }

.slot-label { font-size: 12px; font-weight: 500; color: var(--gray-600); text-align: center; }
.slot.loaded .slot-label { color: var(--green-dark); }
.slot-sub { font-size: 11px; color: var(--gray-400); text-align: center; }

.thumb-canvas { width: 148px; height: 88px; display: block; }

.slot-bottom {
  padding: 5px 7px;
  text-align: center;
  border-top: 0.5px solid var(--border);
  background: var(--green-light);
}
.slot-fname {
  font-size: 10px;
  color: var(--green-dark);
  word-break: break-all;
  line-height: 1.5;
}

/* ── add button ── */
.add-btn {
  width: 148px;
  height: 130px;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  cursor: pointer;
  background: transparent;
  color: var(--gray-400);
  font-size: 12px;
  font-family: var(--font);
  transition: border-color .2s, color .2s;
  flex-shrink: 0;
}
.add-btn:hover { border-color: var(--blue-mid); color: var(--blue); }
.add-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1.5px solid currentColor;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  line-height: 1;
}

/* ── border info ── */
.border-info { font-size: 12px; color: var(--gray-600); margin-top: 10px; min-height: 18px; }

/* ── 도면 아카이브 ── */
.archive-toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.archive-search-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.archive-search-row input[type="text"] {
  flex: 1 1 auto;
  min-width: 0;
  padding: 10px 12px;
  font-size: 13px;
  font-family: var(--font);
  border: 0.5px solid var(--border-md);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color .2s;
}
.archive-search-row input[type="text"]:focus { border-color: var(--blue-mid); }

.archive-search-row .archive-search-btn {
  flex: none;
  width: auto;
  padding: 10px 22px;
  margin-top: 0;
  white-space: nowrap;
}

.archive-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 14px;
  border: 0.5px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.archive-card:hover { background: var(--blue-light); border-color: var(--blue-mid); }

.archive-card-title { font-size: 13px; font-weight: 600; color: #111; }
.archive-card-name { font-weight: 400; color: var(--gray-600); margin-left: 6px; }
.archive-card-meta { font-size: 11px; color: var(--gray-400); margin-top: 2px; }

.archive-empty {
  font-size: 12px;
  color: var(--gray-400);
  padding: 10px 2px;
}

/* ── 관리자 폼 ── */
.admin-input {
  width: 100%;
  padding: 10px 12px;
  font-size: 13px;
  font-family: var(--font);
  border: 0.5px solid var(--border-md);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color .2s;
}
.admin-input:focus { border-color: var(--blue-mid); }

.admin-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}
@media (max-width: 640px) {
  .admin-form-grid { grid-template-columns: 1fr; }
}

.stage-list { margin: 12px 0; }
.stage-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 12px;
  border: 0.5px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 6px;
  font-size: 12px;
}
.stage-item .stage-info { display: flex; align-items: center; gap: 8px; }

.btn-danger {
  padding: 4px 10px;
  font-size: 11px;
  border-radius: 6px;
  border: 1px solid var(--red);
  background: #fff;
  color: var(--red);
  cursor: pointer;
  transition: background .15s, color .15s;
  flex-shrink: 0;
}
.btn-danger:hover { background: var(--red); color: #fff; }

.status-ok  { color: var(--green-dark); font-size: 13px; padding: 10px 2px; }
.status-err { color: var(--red-dark);   font-size: 13px; padding: 10px 2px; }

/* ── run button ── */
.run-btn {
  width: 100%;
  padding: 12px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-lg);
  background: var(--blue);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: background .2s;
  margin-top: 0.5rem;
}
.run-btn:hover { background: var(--blue-dark); }
.run-btn:disabled {
  background: var(--gray-50);
  color: var(--gray-400);
  cursor: not-allowed;
}

/* ── export button ── */
.export-btn {
  display: inline-block;
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-lg);
  background: #1a7f64;
  color: #fff;
  border: none;
  cursor: pointer;
  transition: background .2s, box-shadow .2s;
  box-shadow: 0 4px 14px rgba(26, 127, 100, 0.30);
}
.export-btn:hover {
  background: #15664f;
  box-shadow: 0 6px 18px rgba(26, 127, 100, 0.40);
}

/* ── error ── */
.errmsg {
  background: var(--red-light);
  color: var(--red-dark);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 13px;
  margin-top: 10px;
}

/* ── results ── */
.step-pair {
  background: #fff;
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 10px;
}

.pair-head {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}
.pair-badge { display: flex; align-items: center; gap: 6px; }

.badge-from,
.badge-to {
  padding: 3px 11px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 500;
  background: var(--gray-50);
  color: var(--gray-800);
}
.badge-arr { font-size: 13px; color: var(--gray-400); }

.pair-pct { margin-left: auto; font-size: 20px; font-weight: 600; color: var(--blue); }
.pair-pct.zero { color: var(--gray-400); }

.chevron { font-size: 11px; color: var(--gray-400); transition: transform .2s; }
.chevron.open { transform: rotate(180deg); }

.pair-detail { overflow: hidden; transition: max-height .3s ease; }

/* ── table ── */
table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 12px; }
th {
  text-align: left;
  padding: 7px 10px;
  border-bottom: 1px solid var(--border-md);
  color: var(--gray-600);
  font-weight: 500;
  font-size: 12px;
}
td { padding: 6px 10px; border-bottom: 0.5px solid var(--border); color: #1a1a1a; }
tr:last-child td { border-bottom: none; }

.layer-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  margin-right: 5px;
  vertical-align: middle;
}

/* ── pills ── */
.pill {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 500;
}
.pill-up { background: var(--green-light); color: var(--green-dark); }
.pill-dn { background: var(--red-light); color: var(--red-dark); }
.pill-nc { background: var(--gray-50); color: var(--gray-600); }

.pair-meta {
  margin-top: 10px;
  font-size: 12px;
  color: var(--gray-600);
  padding: 0 4px;
}

/* ── total box ── */
.total-box {
  background: #fff;
  border: 2px solid var(--blue);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-top: 1.5rem;
}
.total-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.summary-card {
  background: var(--gray-50);
  border-radius: var(--radius-md);
  padding: 1rem;
}
.summary-label { font-size: 12px; color: var(--gray-600); margin-bottom: 5px; }
.summary-val { font-size: 26px; font-weight: 600; color: #111; }
.summary-val.up { color: var(--blue); }
.summary-val.dn { color: var(--red); }
.summary-sub { font-size: 11px; color: var(--gray-400); margin-top: 3px; }

/* ── responsive ── */
@media (max-width: 640px) {
  .app { padding: 1.25rem; }
  .total-grid { grid-template-columns: 1fr 1fr; }
}

/* ── 관리자 2단 레이아웃 (입력 / 미리보기) ── */
.admin-app { max-width: 1800px; }

.admin-layout {
  display: grid;
  grid-template-columns: minmax(460px, 620px) 1fr;
  gap: 24px;
  align-items: start;
}
.admin-main { min-width: 0; }

.admin-preview { position: sticky; top: 20px; }
.preview-box {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  background: #fff;
  overflow: hidden;
}
.preview-box canvas { width: 100%; height: 100%; display: block; }
.preview-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  font-size: 12px;
  color: var(--gray-400);
  line-height: 1.7;
}
.preview-meta { font-size: 12px; color: var(--gray-600); margin-top: 10px; line-height: 1.7; word-break: break-all; }

@media (max-width: 1000px) {
  .admin-layout { grid-template-columns: 1fr; }
  .admin-preview { position: static; }
  .preview-box { aspect-ratio: 16 / 9; }
}

/* ── 타임라인 업로드 타일 (관리자 슬롯 축소판) ── */
.timeline-wrap .slot,
.timeline-wrap .slot-inner,
.timeline-wrap .add-btn { width: 96px; }
.timeline-wrap .slot-inner,
.timeline-wrap .add-btn { height: 76px; padding: 6px; gap: 4px; }
.timeline-wrap .thumb-canvas { width: 96px; height: 56px; }
.timeline-wrap .slot-arrow { width: 22px; height: 76px; }
.timeline-wrap .slot-num { width: 18px; height: 18px; font-size: 9px; }
.timeline-wrap .slot-label { font-size: 10px; }
.timeline-wrap .slot-sub { font-size: 9px; }
.timeline-wrap .slot-bottom { padding: 3px 5px; }
.timeline-wrap .slot-fname { font-size: 9px; }
.timeline-wrap .add-icon { width: 20px; height: 20px; font-size: 14px; }

.timeline-wrap .slot.loaded { cursor: pointer; }
.timeline-wrap .slot.loaded.selected { border-color: var(--blue-mid); box-shadow: 0 0 0 2px var(--blue-light); }

.tile-replace-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 5px;
  border: 0.5px solid var(--border-md);
  background: rgba(255,255,255,.92);
  color: var(--gray-600);
  cursor: pointer;
}
.tile-replace-btn:hover { border-color: var(--blue-mid); color: var(--blue); }

/* ── 등록된 단계 썸네일 ── */
.stage-thumb {
  width: 56px;
  height: 40px;
  border-radius: 6px;
  border: 0.5px solid var(--border);
  cursor: pointer;
  flex-shrink: 0;
  background: #fff;
}
.stage-thumb.selected { border-color: var(--blue-mid); box-shadow: 0 0 0 2px var(--blue-light); }