:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --ink: #162033;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #146c43;
  --primary-ink: #ffffff;
  --soft: #eaf6ef;
  --warn: #fff7ed;
  --danger: #fef2f2;
  --shadow: 0 18px 50px rgba(15, 23, 42, .08);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); }
button, input, select, textarea { font: inherit; }
.app-shell { display: flex; min-height: 100vh; }
.sidebar { width: 280px; padding: 24px; background: #0f172a; color: #fff; display: flex; flex-direction: column; }
.brand { display: flex; gap: 12px; align-items: center; margin-bottom: 28px; }
.brand-mark { width: 44px; height: 44px; border-radius: 14px; background: #22c55e; color: #052e16; display: grid; place-items: center; font-weight: 800; font-size: 24px; }
.brand-logo { width: 170px; max-width: 100%; height: auto; display: block; }
.auth-logo-img { width: 260px; max-width: 86%; height: auto; display: block; margin: 0 auto 16px; background: #0f172a; border-radius: 16px; padding: 18px; }
.brand h1 { font-size: 18px; margin: 0; }
.brand p { margin: 3px 0 0; color: #cbd5e1; font-size: 12px; }
nav { display: grid; gap: 8px; }
.nav { border: 0; border-radius: 12px; padding: 12px 14px; color: #cbd5e1; background: transparent; text-align: left; cursor: pointer; }
.nav:hover, .nav.active { background: rgba(255,255,255,.1); color: #fff; }
.sidebar-footer { margin-top: auto; color: #cbd5e1; font-size: 13px; display: grid; gap: 4px; }
.sidebar-footer small { color: #94a3b8; }
.main { flex: 1; padding: 28px; overflow: auto; }
.topbar { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; margin-bottom: 22px; }
.topbar h2 { margin: 0 0 6px; font-size: 28px; }
.topbar p { margin: 0; color: var(--muted); }
.top-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.primary, .ghost, .danger-btn { border: 0; border-radius: 11px; padding: 10px 14px; cursor: pointer; font-weight: 650; }
.primary { background: var(--primary); color: var(--primary-ink); }
.ghost { background: var(--panel); color: var(--ink); border: 1px solid var(--line); }
.danger-btn { background: #dc2626; color: #fff; }
.file-label input { display: none; }
.view { display: none; }
.view.active { display: block; }
.cards { display: grid; grid-template-columns: repeat(4, minmax(160px, 1fr)); gap: 14px; margin-bottom: 18px; }
.card, .panel { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.card { padding: 18px; }
.card span { color: var(--muted); font-size: 13px; }
.card strong { display: block; font-size: 28px; margin-top: 8px; }
.panel { padding: 18px; margin-bottom: 18px; }
.panel h3 { margin: 0 0 14px; }
.toolbar { display: grid; grid-template-columns: minmax(220px, 1fr) 180px; gap: 12px; align-items: end; margin: 6px 0 12px; }

.project-tools { display: grid; gap: 14px; margin: 8px 0 12px; }
.project-search { max-width: 520px; }
.sort-panel { border: 1px solid var(--line); border-radius: 14px; padding: 12px; background: #f8fafc; }
.sort-panel > b { display: block; margin-bottom: 10px; }
.sort-grid { display: grid; grid-template-columns: repeat(3, minmax(220px, 1fr)); gap: 8px; }
.sort-field { display: flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: 11px; background: #fff; padding: 8px; }
.sort-field span { flex: 1; font-size: 13px; font-weight: 650; color: #374151; }
.sort-btn { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 5px 8px; cursor: pointer; font-size: 12px; }
.sort-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.brand-text h1 { font-size: 18px; margin: 0; }
.file-label.upload-single { background: var(--primary); color: #fff; border-radius: 11px; padding: 10px 14px; font-weight: 750; cursor: pointer; }

.grid { display: grid; gap: 14px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
label { display: grid; gap: 6px; color: #374151; font-size: 13px; }
input, select, textarea { border: 1px solid var(--line); border-radius: 10px; padding: 10px 11px; background: #fff; color: var(--ink); }
textarea { resize: vertical; }
table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 14px; overflow: hidden; }
th, td { padding: 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: #374151; font-size: 13px; background: #f9fafb; }
tr:last-child td { border-bottom: 0; }
.badge { display: inline-flex; border-radius: 999px; padding: 4px 9px; font-size: 12px; font-weight: 700; background: #eef2ff; }
.grade-A { background: #dcfce7; color: #166534; }
.grade-B { background: #e0f2fe; color: #075985; }
.grade-C { background: #fef3c7; color: #92400e; }
.grade-D { background: #fee2e2; color: #991b1b; }
.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.row-actions button { border: 1px solid var(--line); background: #fff; border-radius: 9px; padding: 7px 9px; cursor: pointer; }
.folder-grid { display: grid; grid-template-columns: repeat(5, minmax(150px, 1fr)); gap: 12px; }
.folder { border: 1px solid var(--line); border-radius: 14px; padding: 13px; background: #fff; }
.folder b { display: block; margin-bottom: 5px; }
.folder small { color: var(--muted); }
.checklist { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.check-item { border: 1px solid var(--line); border-radius: 12px; padding: 12px; background: #fff; display: flex; justify-content: space-between; gap: 10px; align-items: center; }
.check-item select { max-width: 150px; }
.report-box { white-space: pre-wrap; background: #0f172a; color: #e2e8f0; padding: 18px; border-radius: 16px; line-height: 1.7; }
dialog { border: 0; padding: 0; border-radius: 20px; box-shadow: 0 20px 80px rgba(0,0,0,.28); width: min(860px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(15,23,42,.52); }
.modal { padding: 20px; display: grid; gap: 14px; }
.modal-header, .modal-actions { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.modal-header h3 { margin: 0; }
.icon { border: 0; background: #f3f4f6; border-radius: 50%; width: 34px; height: 34px; cursor: pointer; font-size: 22px; }
@media (max-width: 980px) {
  .app-shell { flex-direction: column; }
  .sidebar { width: 100%; }
  nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .topbar { flex-direction: column; }
  .cards, .grid.two, .grid.three, .folder-grid, .checklist { grid-template-columns: 1fr; }
}
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.five { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.badge.ok { background: #dcfce7; color: #166534; }
.badge.warn { background: #fef3c7; color: #92400e; }
.muted { color: var(--muted); }
.callout { border: 1px solid var(--line); border-radius: 14px; padding: 14px; background: #f8fafc; display: flex; justify-content: space-between; gap: 12px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.callout.success { background: #ecfdf5; border-color: #bbf7d0; }
.callout.warning { background: #fff7ed; border-color: #fed7aa; }
.help-box { border: 1px solid #bfdbfe; background: #eff6ff; color: #1e3a8a; border-radius: 12px; padding: 12px; font-size: 13px; line-height: 1.6; }
details { border: 1px solid var(--line); border-radius: 14px; padding: 12px; background: #fff; margin-bottom: 12px; }
summary { cursor: pointer; font-weight: 800; }
table.criteria { margin-top: 12px; }
@media (max-width: 980px) { .grid.four, .grid.five, .toolbar, .sort-grid { grid-template-columns: 1fr; } }

.auth-screen { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: linear-gradient(135deg,#0f172a,#14532d); }
.auth-screen[hidden], .app-shell[hidden] { display: none !important; }
.auth-card { width: min(440px,100%); background: #fff; border-radius: 24px; padding: 36px; box-shadow: 0 30px 90px rgba(0,0,0,.3); text-align: center; }
.auth-card h1 { margin: 14px 0 6px; } .auth-card p { color: var(--muted); margin: 0 0 24px; }
.auth-logo { margin: auto; } .auth-button { width: 100%; padding: 13px; margin-bottom: 12px; }
.auth-card small { color: var(--muted); } .auth-message { margin-top: 18px; padding: 10px; border-radius: 10px; background: #f8fafc; color: #475569; font-size: 13px; }
.user-chip, .sync-status { padding: 8px 11px; border-radius: 999px; font-size: 12px; background: #fff; border: 1px solid var(--line); }
.sync-status.ok { background:#ecfdf5;color:#166534;border-color:#bbf7d0; } .sync-status.saving { background:#eff6ff;color:#1d4ed8;border-color:#bfdbfe; } .sync-status.error { background:#fef2f2;color:#991b1b;border-color:#fecaca; }
.empty-state { text-align:center; padding:48px 20px; }

/* Firebase Storage upload */
.upload-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:18px}.file-label{display:inline-flex;align-items:center;gap:10px;margin:0}.file-label input[type=file]{max-width:420px}.upload-status{font-size:13px;color:#667085}.progress-wrap{height:10px;background:#eef2f6;border-radius:999px;overflow:hidden;margin-top:12px}.progress-bar{height:100%;width:0;background:#2563eb;transition:width .15s ease}.file-link{font-weight:700;color:#1d4ed8;text-decoration:none}.file-link:hover{text-decoration:underline}.table-scroll{overflow-x:auto}.danger-text{color:#b42318;border-color:#fecdca;background:#fff}.danger-text:hover{background:#fef3f2}