:root {
  --bg:          #141416;
  --surface:     #1e1e22;
  --surface-2:   #28282e;
  --surface-3:   #32323a;
  --primary:     #f5a623;
  --primary-dim: #c4841a;
  --accent:      #ff6b35;
  --success:     #3ddc84;
  --danger:      #ff4d4f;
  --warning:     #facc15;
  --text:        #e8e8ec;
  --text-light:  #888898;
  --border:      #3a3a44;
  --border-light:#2e2e38;
  --radius:      8px;
  --radius-sm:   5px;
  --shadow:      0 4px 24px rgba(0,0,0,.5);
  --font-display: 'Bebas Neue', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
html { font-size: 15px; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}
body::before {
  content:'';
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(245,166,35,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,166,35,.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events:none;
  z-index:0;
}
#root { position:relative; z-index:1; }

/* ── Auth ─────────────────────────────────────────────── */
#authScreen {
  display:flex; align-items:center; justify-content:center;
  min-height:100vh; padding:2rem;
}
.auth-card {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:3rem 2.5rem;
  width:100%; max-width:440px;
  box-shadow: var(--shadow);
  position:relative;
  overflow:hidden;
}
.auth-card::before {
  content:'';
  position:absolute;
  top:-40px; left:-40px;
  width:160px; height:160px;
  background: radial-gradient(circle, rgba(245,166,35,.15) 0%, transparent 70%);
  pointer-events:none;
}
.auth-logo {
  font-family: var(--font-display);
  font-size:3rem;
  letter-spacing:.06em;
  color: var(--primary);
  line-height:1;
  margin-bottom:.25rem;
}
.auth-tagline {
  font-size:.82rem;
  color: var(--text-light);
  margin-bottom:2.5rem;
  font-family: var(--font-mono);
  letter-spacing:.05em;
}
.auth-label {
  font-size:.75rem; font-weight:600;
  letter-spacing:.08em; text-transform:uppercase;
  color:var(--text-light); margin-bottom:.4rem; display:block;
}
.auth-input {
  width:100%; padding:.7rem 1rem;
  background:var(--surface-2); border:1px solid var(--border);
  border-radius:var(--radius-sm); color:var(--text);
  font-family:var(--font-body); font-size:.9rem;
  transition: border-color .2s;
  margin-bottom:1rem;
}
.auth-input:focus { outline:none; border-color:var(--primary); }
.btn { display:inline-flex; align-items:center; gap:.45rem; padding:.55rem 1.1rem;
  border:none; border-radius:var(--radius-sm); cursor:pointer;
  font-family:var(--font-body); font-size:.875rem; font-weight:600;
  transition: all .15s; white-space:nowrap; }
.btn-primary { background:var(--primary); color:#000; }
.btn-primary:hover { background:var(--primary-dim); }
.btn-primary:disabled { opacity:.4; cursor:not-allowed; }
.btn-secondary { background:var(--surface-3); color:var(--text); border:1px solid var(--border); }
.btn-secondary:hover { background:var(--surface-2); }
.btn-success { background:var(--success); color:#000; }
.btn-success:hover { filter:brightness(.9); }
.btn-danger { background:transparent; color:var(--danger); border:1px solid var(--danger); }
.btn-danger:hover { background:rgba(255,77,79,.1); }
.btn-ghost { background:transparent; color:var(--text-light); border:1px solid var(--border); }
.btn-ghost:hover { background:var(--surface-2); color:var(--text); }
.btn-sm { padding:.35rem .8rem; font-size:.8rem; }
.btn-full { width:100%; justify-content:center; margin-bottom:.75rem; }
.btn-google { background:var(--surface-2); border:1px solid var(--border); color:var(--text); }
.btn-google:hover { background:var(--surface-3); }
.divider { display:flex; align-items:center; gap:.75rem; color:var(--text-light); font-size:.8rem; margin:.75rem 0; }
.divider::before, .divider::after { content:''; flex:1; height:1px; background:var(--border); }

/* ── App Shell ───────────────────────────────────────── */
#appShell { display:none; flex-direction:column; min-height:100vh; }
.top-bar {
  display:flex; align-items:center; gap:1rem; padding:.75rem 1.5rem;
  background:var(--surface); border-bottom:1px solid var(--border);
  position:sticky; top:0; z-index:50;
}
.app-logo { font-family:var(--font-display); font-size:1.7rem; letter-spacing:.06em; color:var(--primary); line-height:1; }
.app-logo span { color:var(--text-light); font-size:.9rem; font-family:var(--font-mono); font-weight:400; letter-spacing:.05em; margin-left:.5rem; vertical-align:middle; }
.top-bar-right { margin-left:auto; display:flex; align-items:center; gap:.75rem; }
.level-badge {
  display:none; padding:.2rem .6rem; font-size:.7rem; font-weight:600;
  letter-spacing:.08em; text-transform:uppercase;
  background:rgba(245,166,35,.15); border:1px solid rgba(245,166,35,.4);
  border-radius:99px; color:var(--primary);
  font-family:var(--font-mono);
}

/* ── Nav ──────────────────────────────────────────────── */
.nav-tabs {
  display:flex; gap:0; background:var(--surface);
  border-bottom:1px solid var(--border);
  padding:0 1.5rem;
}
.nav-tab {
  padding:.7rem 1.25rem; cursor:pointer;
  font-size:.85rem; font-weight:600; letter-spacing:.04em;
  color:var(--text-light); border:none; background:none;
  border-bottom:2px solid transparent;
  transition: all .15s; display:flex; align-items:center; gap:.4rem;
}
.nav-tab.active { color:var(--primary); border-bottom-color:var(--primary); }
.nav-tab:hover:not(.active) { color:var(--text); }

/* ── Tab content ─────────────────────────────────────── */
.tab-pane { display:none; padding:1.5rem; max-width:900px; margin:0 auto; width:100%; }
.tab-pane.active { display:block; }

/* ── Search + list ────────────────────────────────────── */
.search-bar { display:flex; gap:.75rem; margin-bottom:1.25rem; }
.search-input {
  flex:1; padding:.65rem 1rem;
  background:var(--surface); border:1px solid var(--border);
  border-radius:var(--radius-sm); color:var(--text);
  font-family:var(--font-body); font-size:.9rem;
}
.search-input:focus { outline:none; border-color:var(--primary); }
.section-title {
  font-family:var(--font-display); font-size:1.6rem;
  letter-spacing:.04em; color:var(--text); margin-bottom:1rem;
  display:flex; align-items:center; gap:.75rem;
}
.section-title .icon { color:var(--primary); }
.project-card {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1rem 1.25rem;
  margin-bottom:.6rem;
  cursor:pointer;
  display:flex; align-items:center; gap:1rem;
  transition: border-color .15s, background .15s;
  position:relative; overflow:hidden;
}
.project-card::before {
  content:''; position:absolute; left:0; top:0; bottom:0; width:3px;
  background:var(--primary); opacity:0; transition:opacity .15s;
}
.project-card:hover { border-color:var(--primary); background:var(--surface-2); }
.project-card:hover::before { opacity:1; }
.project-card-info { flex:1; min-width:0; }
.project-card-name { font-weight:600; font-size:.95rem; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.project-card-meta { font-size:.8rem; color:var(--text-light); margin-top:.2rem; }
.project-card-badge {
  font-size:.7rem; font-weight:600; letter-spacing:.06em; text-transform:uppercase;
  padding:.2rem .6rem; border-radius:99px; white-space:nowrap;
  background:var(--surface-3); color:var(--text-light); border:1px solid var(--border);
  font-family:var(--font-mono);
}
.project-card-delete {
  opacity:0; padding:.3rem .5rem; border-radius:var(--radius-sm);
  background:transparent; border:none; cursor:pointer; color:var(--danger);
  transition:opacity .15s;
}
.project-card:hover .project-card-delete { opacity:1; }
.empty-state {
  text-align:center; padding:4rem 2rem;
  color:var(--text-light);
}
.empty-state .big-icon { font-size:3.5rem; margin-bottom:1rem; opacity:.3; }
.empty-state h3 { font-family:var(--font-display); font-size:1.4rem; letter-spacing:.04em; margin-bottom:.5rem; color:var(--text); }

/* ── Method selector ─────────────────────────────────── */
#methodSelector { padding:0; }
.method-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:1rem; margin-top:1rem; }
@media(max-width:540px) { .method-grid { grid-template-columns:1fr; } }
.method-card {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.75rem 1.5rem;
  cursor:pointer; text-align:left;
  transition: border-color .15s, transform .15s, background .15s;
  position:relative; overflow:hidden;
}
.method-card::before {
  content:''; position:absolute; bottom:0; right:0;
  width:80px; height:80px;
  border-radius:50%; opacity:.06;
  background:var(--primary);
  transform:translate(30%,30%);
}
.method-card:hover { border-color:var(--primary); background:var(--surface-2); transform:translateY(-2px); }
.method-icon { font-size:2rem; margin-bottom:.75rem; display:block; }
.method-title { font-family:var(--font-display); font-size:1.25rem; letter-spacing:.04em; margin-bottom:.4rem; color:var(--text); }
.method-desc { font-size:.82rem; color:var(--text-light); line-height:1.5; }
.method-tag {
  display:inline-block; margin-top:.75rem; padding:.15rem .55rem;
  background:rgba(245,166,35,.12); border:1px solid rgba(245,166,35,.3);
  border-radius:99px; font-size:.7rem; font-weight:600;
  color:var(--primary); font-family:var(--font-mono); letter-spacing:.05em;
}

/* ── Wizard ───────────────────────────────────────────── */
.wizard { display:none; }
.wizard.active { display:block; }
.wizard-header {
  display:flex; align-items:center; gap:.75rem;
  margin-bottom:1.5rem;
}
.wizard-back {
  background:none; border:none; cursor:pointer;
  color:var(--text-light); padding:.3rem;
  border-radius:var(--radius-sm); transition:color .15s;
  display:flex; align-items:center; gap:.3rem; font-size:.85rem;
}
.wizard-back:hover { color:var(--primary); }
.wizard-title { font-family:var(--font-display); font-size:1.5rem; letter-spacing:.04em; }

/* Stepper */
.stepper { display:flex; align-items:center; margin-bottom:2rem; }
.step-dot {
  width:28px; height:28px; border-radius:50%;
  border:2px solid var(--border-light);
  display:flex; align-items:center; justify-content:center;
  font-size:.75rem; font-weight:700; color:var(--text-light);
  font-family:var(--font-mono);
  transition: all .2s;
}
.step-dot.active { border-color:var(--primary); color:var(--primary); background:rgba(245,166,35,.12); }
.step-dot.done { border-color:var(--success); background:var(--success); color:#000; }
.step-line { flex:1; height:2px; background:var(--border-light); margin:0 .4rem; transition:background .2s; }
.step-line.done { background:var(--success); }
.wizard-panel { display:none; }
.wizard-panel.active { display:block; }
.form-label {
  display:block; font-size:.75rem; font-weight:600;
  letter-spacing:.08em; text-transform:uppercase;
  color:var(--text-light); margin-bottom:.5rem;
}
.form-input, .form-select, .form-textarea {
  width:100%; padding:.65rem 1rem;
  background:var(--surface-2); border:1px solid var(--border);
  border-radius:var(--radius-sm); color:var(--text);
  font-family:var(--font-body); font-size:.9rem;
  transition: border-color .2s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { outline:none; border-color:var(--primary); }
.form-textarea { resize:vertical; min-height:90px; }
.form-select option { background:var(--surface-2); }
.form-group { margin-bottom:1.1rem; }
.wizard-actions { display:flex; gap:.75rem; margin-top:1.5rem; }
.result-box {
  display:none; margin-top:1rem; padding:.85rem 1rem;
  background:var(--surface-2); border:1px solid var(--border);
  border-radius:var(--radius-sm); font-size:.875rem;
  color:var(--text-light);
}

/* Constraint chips */
.chips { display:flex; flex-wrap:wrap; gap:.5rem; margin-top:.5rem; }
.chip {
  padding:.3rem .8rem; border-radius:99px;
  font-size:.78rem; font-weight:600; cursor:pointer;
  background:var(--surface-2); border:1px solid var(--border);
  color:var(--text-light); transition:all .15s;
  font-family:var(--font-mono);
}
.chip.selected { background:rgba(245,166,35,.15); border-color:var(--primary); color:var(--primary); }
.chip:hover:not(.selected) { border-color:var(--text-light); color:var(--text); }

/* Tag pills */
.tag-pill {
  display:inline-flex; align-items:center; gap:.35rem;
  padding:.25rem .65rem; background:var(--surface-3);
  border:1px solid var(--border); border-radius:99px;
  font-size:.8rem; color:var(--text);
}
.tag-pill button { background:none; border:none; cursor:pointer; color:var(--text-light); font-size:.9rem; line-height:1; padding:0; }
.tag-pill button:hover { color:var(--danger); }

/* Import tabs */
.import-tabs { display:flex; gap:0; border-bottom:1px solid var(--border); margin-bottom:1.25rem; }
.import-tab {
  padding:.55rem 1rem; cursor:pointer; font-size:.85rem; font-weight:600;
  color:var(--text-light); background:none; border:none;
  border-bottom:2px solid transparent; transition:all .15s;
}
.import-tab.active { color:var(--primary); border-bottom-color:var(--primary); }
.import-pane { display:none; }
.import-pane.active { display:block; }

/* ── Project Viewer Modal ─────────────────────────────── */
.modal-overlay {
  position:fixed; inset:0; background:rgba(0,0,0,.75);
  display:none; align-items:flex-start; justify-content:center;
  z-index:100; padding:1.5rem; overflow-y:auto;
}
.modal-overlay.active, .modal-overlay.open { display:flex; }
.modal-content {
  background:var(--surface); border:1px solid var(--border);
  border-radius:var(--radius); width:100%; max-width:780px;
  box-shadow: var(--shadow); position:relative;
  margin:auto;
}
.modal-header {
  padding:1.5rem 1.5rem 0;
  border-bottom:1px solid var(--border); padding-bottom:1rem;
  display:flex; align-items:flex-start; gap:1rem;
}
.modal-title { font-family:var(--font-display); font-size:1.6rem; letter-spacing:.04em; flex:1; }
.modal-close {
  background:none; border:none; cursor:pointer; color:var(--text-light);
  padding:.3rem; border-radius:var(--radius-sm); font-size:1.2rem; line-height:1;
  transition:color .15s;
}
.modal-close:hover { color:var(--danger); }
.modal-body { padding:1.25rem 1.5rem 1.5rem; }

/* Materials + tasks lists */
.interactive-list { list-style:none; }
.material-item, .task-item {
  display:flex; align-items:flex-start; gap:.75rem;
  padding:.7rem .85rem; border-radius:var(--radius-sm);
  margin-bottom:.4rem; background:var(--surface-2);
  border:1px solid var(--border-light);
  transition: border-color .15s;
}
.material-item:hover, .task-item:hover { border-color:var(--border); }
.item-qty {
  font-family:var(--font-mono); font-size:.85rem; font-weight:600;
  color:var(--primary); min-width:52px; text-align:right; padding-top:.05rem;
}
.item-name { flex:1; font-size:.9rem; line-height:1.4; }
.item-actions { display:flex; gap:.4rem; }
.item-actions button {
  background:var(--surface-3); border:1px solid var(--border);
  border-radius:var(--radius-sm); padding:.25rem .5rem;
  cursor:pointer; color:var(--text-light); font-size:.75rem;
  transition:all .15s; display:flex; align-items:center; gap:.25rem;
}
.item-actions button:hover { background:var(--surface); color:var(--text); border-color:var(--text-light); }
.task-num {
  font-family:var(--font-mono); font-size:.85rem; font-weight:700;
  color:var(--primary); min-width:28px; padding-top:.05rem;
}
.task-body { flex:1; }
.task-narrative { font-size:.9rem; line-height:1.5; }
.task-meta {
  display:flex; flex-wrap:wrap; gap:.5rem; margin-top:.5rem;
}
.task-badge {
  display:inline-flex; align-items:center; gap:.3rem;
  padding:.15rem .55rem; border-radius:99px;
  font-size:.72rem; font-weight:600;
  background:var(--surface-3); color:var(--text-light);
  border:1px solid var(--border-light);
  font-family:var(--font-mono);
}
.sim-result {
  margin-top:.75rem; padding:.75rem; border-radius:var(--radius-sm);
  background:rgba(61,220,132,.07); border:1px solid rgba(61,220,132,.2);
  font-size:.82rem; line-height:1.5;
}
.sim-result .sim-outcome { font-weight:600; color:var(--success); margin-bottom:.25rem; }
.sim-result .sim-confidence { color:var(--text-light); font-family:var(--font-mono); font-size:.75rem; }
.sim-summary-bar {
  display:flex; align-items:center; gap:.75rem;
  padding:.65rem 1rem; background:rgba(245,166,35,.08);
  border:1px solid rgba(245,166,35,.25); border-radius:var(--radius-sm);
  margin-bottom:1rem; font-size:.85rem;
}

/* Sub menu */
.sub-menu {
  position:fixed; background:var(--surface-2); border:1px solid var(--border);
  border-radius:var(--radius-sm); z-index:400; min-width:230px; max-height:300px;
  overflow-y:auto; box-shadow:var(--shadow);
}
.sub-menu-header {
  padding:.45rem .75rem; font-size:.75rem; font-weight:700;
  letter-spacing:.06em; text-transform:uppercase; color:var(--text-light);
  border-bottom:1px solid var(--border); background:var(--surface-3);
  font-family:var(--font-mono);
}
.sub-menu-item {
  padding:.55rem .75rem; cursor:pointer;
  border-bottom:1px solid var(--border-light); transition:background .12s;
}
.sub-menu-item:hover { background:var(--surface-3); }
.sub-menu-item-title { font-weight:600; font-size:.85rem; }
.sub-menu-item-desc { font-size:.75rem; color:var(--text-light); }
.sub-menu-cancel {
  padding:.45rem .75rem; text-align:center; cursor:pointer;
  color:var(--danger); font-size:.8rem; font-weight:600;
}
.sub-menu-cancel:hover { background:rgba(255,77,79,.07); }

/* ── Lab ─────────────────────────────────────────────── */
.lab-tabs { display:flex; gap:0; border-bottom:1px solid var(--border); margin-bottom:1.5rem; overflow-x:auto; }
.lab-tab {
  padding:.55rem 1rem; cursor:pointer; font-size:.82rem; font-weight:600;
  color:var(--text-light); background:none; border:none;
  border-bottom:2px solid transparent; transition:all .15s; white-space:nowrap;
  letter-spacing:.03em;
}
.lab-tab.active { color:var(--primary); border-bottom-color:var(--primary); }
.lab-pane { display:none; }
.lab-pane.active { display:block; }
.lab-card {
  background:var(--surface); border:1px solid var(--border);
  border-radius:var(--radius); padding:1.25rem;
  margin-bottom:.75rem;
}
.lab-card h4 {
  font-family:var(--font-display); font-size:1.1rem; letter-spacing:.04em;
  margin-bottom:.6rem; color:var(--text);
}
.ai-output {
  background:var(--bg); border:1px solid var(--border);
  border-radius:var(--radius-sm); padding:1rem;
  font-size:.85rem; line-height:1.7; color:var(--text-light);
  min-height:80px; white-space:pre-wrap; font-family:var(--font-body);
  margin-top:.75rem;
}

/* Workspace selector */
.workspace-select {
  padding:.2rem .5rem; background:var(--surface-3); border:1px solid var(--border);
  border-radius:var(--radius-sm); color:var(--text-light);
  font-family:var(--font-mono); font-size:.72rem; cursor:pointer;
}

/* ── Info blocks ─────────────────────────────────────── */
.scope-bar {
  display:flex; align-items:center; gap:1.5rem; flex-wrap:wrap;
  padding:.85rem 1rem; background:var(--surface-2);
  border-radius:var(--radius-sm); border:1px solid var(--border);
  margin-bottom:1.5rem;
}
.scope-label { font-size:.82rem; font-weight:600; color:var(--text-light); letter-spacing:.04em; }

/* ── Toast ────────────────────────────────────────────── */
#toastContainer {
  position:fixed; bottom:1.5rem; right:1.5rem; z-index:9000;
  display:flex; flex-direction:column; gap:.5rem; pointer-events:none;
}
.toast {
  display:flex; align-items:center; gap:.6rem;
  padding:.7rem 1.1rem; border-radius:var(--radius-sm);
  background:var(--surface-2); border:1px solid var(--border);
  font-size:.85rem; color:var(--text); box-shadow:var(--shadow);
  animation: slideIn .2s ease;
  pointer-events:all;
}
.toast-success { border-left:3px solid var(--success); }
.toast-error   { border-left:3px solid var(--danger); }
.toast-warning { border-left:3px solid var(--warning); }
.toast-info    { border-left:3px solid var(--primary); }
@keyframes slideIn { from { transform:translateX(120%); opacity:0; } to { transform:translateX(0); opacity:1; } }

/* ── Spinner / utils ──────────────────────────────────── */
.icon { width:1em; height:1em; display:inline-block; vertical-align:middle; fill:currentColor; }
@keyframes spin { to { transform:rotate(360deg); } }
.spin { animation:spin .8s linear infinite; }
.hidden { display:none !important; }
.text-muted { color:var(--text-light); }
.mt-1 { margin-top:.5rem; }
.mt-2 { margin-top:1rem; }
.flex { display:flex; align-items:center; gap:.5rem; }
.tag-row { display:flex; flex-wrap:wrap; gap:.4rem; margin-top:.5rem; }

/* ── Facts panel ─────────────────────────────────────── */
.fact-item {
  display:flex; align-items:flex-start; gap:.75rem;
  padding:.6rem .85rem; border-radius:var(--radius-sm);
  background:var(--surface-2); border:1px solid var(--border-light);
  margin-bottom:.4rem; font-size:.85rem;
}
.fact-key { font-weight:600; color:var(--primary); font-family:var(--font-mono); font-size:.78rem; min-width:100px; }
.fact-val { flex:1; color:var(--text); line-height:1.4; }
.fact-del { background:none; border:none; cursor:pointer; color:var(--text-light); padding:.1rem .3rem; border-radius:3px; }
.fact-del:hover { color:var(--danger); }

/* translate btn */
#translateProjectBtn { padding:.3rem .55rem; }

/* scrollbar */
::-webkit-scrollbar { width:6px; height:6px; }
::-webkit-scrollbar-track { background:var(--surface); }
::-webkit-scrollbar-thumb { background:var(--border); border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background:var(--text-light); }