:root {
  --bg: #05050f;
  --bg2: #07071a;
  --bg3: #0a0a1e;
  --bg4: #0f0f28;
  --border: #1a1a32;
  --border2: #252545;
  --text: #c8c8e8;
  --text2: #7070a0;
  --text3: #404068;
  --accent: #6060d0;
  --accent2: #4040a0;
  --green: #2a6a3a;
  --green2: #3a9a5a;
  --amber: #8a6a20;
  --amber2: #d4a030;
  --blue: #2a4a8a;
  --blue2: #4a80d0;
  --red: #6a2020;
  --red2: #d04040;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body { background: var(--bg); color: var(--text); font-family: var(--sans); font-size: 14px; line-height: 1.6; }

::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 2px; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--text); }

/* ── Layout ── */
.layout { display: flex; height: 100vh; overflow: hidden; }

/* ── Sidebar ── */
.sidebar {
  width: 220px; min-width: 220px;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
}
.sidebar-header { padding: 20px 16px 16px; border-bottom: 1px solid var(--border); }
.logo { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.logo-icon { font-size: 18px; color: var(--accent); }
.logo-text { font-family: var(--mono); font-size: 13px; color: var(--text); font-weight: 500; }
.logo-sub { font-size: 11px; color: var(--text3); font-family: var(--mono); }
.sidebar-nav { flex: 1; padding: 12px 8px; }
.nav-item { display: block; padding: 8px 10px; border-radius: 7px; color: var(--text2); font-size: 13px; transition: all 0.15s; }
.nav-item:hover, .nav-item.active { background: var(--bg4); color: var(--text); }
.sidebar-footer { padding: 12px 16px; border-top: 1px solid var(--border); }
.pin-status { display: flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 11px; color: var(--text3); }
.dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.dot.locked { background: var(--text3); }
.dot.unlocked { background: var(--green2); box-shadow: 0 0 6px var(--green2); }

/* ── Main ── */
.main { flex: 1; overflow-y: auto; display: flex; flex-direction: column; }
.topbar { padding: 20px 28px 0; display: flex; align-items: center; justify-content: space-between; }
.page-title { font-size: 20px; font-weight: 600; color: var(--text); }
.topbar-actions { display: flex; gap: 10px; }

/* ── Hint ── */
.hint-box {
  margin: 20px 28px 0;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-left: 3px solid var(--accent2);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 13px; color: var(--text2); line-height: 1.6;
}
.hint-icon { font-size: 18px; flex-shrink: 0; margin-top: 1px; }
.hint-box code { background: var(--bg4); padding: 1px 6px; border-radius: 4px; font-family: var(--mono); font-size: 12px; color: var(--accent); }

/* ── Projects Grid ── */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; padding: 20px 28px 28px; }
.empty-state { grid-column: 1/-1; text-align: center; padding: 60px; color: var(--text3); }
.empty-icon { font-size: 40px; margin-bottom: 12px; }
.empty-text { font-family: var(--mono); font-size: 13px; line-height: 1.8; }

.project-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  transition: all 0.2s;
  display: flex; flex-direction: column; gap: 10px;
}
.project-card:hover { border-color: var(--border2); background: var(--bg3); }
.project-card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.project-name { font-weight: 600; font-size: 15px; color: var(--text); }
.project-updated { font-family: var(--mono); font-size: 10px; color: var(--text3); white-space: nowrap; margin-top: 3px; }
.project-desc { font-size: 13px; color: var(--text2); line-height: 1.5; }
.project-stack { font-family: var(--mono); font-size: 11px; color: var(--text3); }
.project-card-footer { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 8px;
  border: 1px solid transparent; cursor: pointer;
  font-family: var(--sans); font-size: 13px; font-weight: 500;
  transition: all 0.15s; white-space: nowrap;
}
.btn:disabled { opacity: 0.4; cursor: default; }
.btn-primary { background: var(--accent2); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent); }
.btn-ghost { background: transparent; border-color: var(--border2); color: var(--text2); }
.btn-ghost:hover { color: var(--text); border-color: var(--text3); }
.btn-danger { background: transparent; border-color: var(--red); color: var(--red2); }
.btn-danger:hover { background: var(--red); }
.btn-context { background: var(--bg4); border-color: var(--accent2); color: var(--accent); }
.btn-context:hover { background: var(--accent2); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 6px; }

/* ── Modals ── */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  align-items: center; justify-content: center; z-index: 100;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg3); border: 1px solid var(--border2);
  border-radius: 14px; padding: 28px;
  width: 440px; max-width: 95vw; max-height: 90vh;
  overflow-y: auto;
}
.modal-lg { width: 700px; }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.modal-title { font-size: 16px; font-weight: 600; color: var(--text); }
.modal-close { background: transparent; border: none; color: var(--text3); cursor: pointer; font-size: 22px; line-height: 1; padding: 0 4px; }
.modal-close:hover { color: var(--text); }
.modal-body { display: flex; flex-direction: column; gap: 16px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 10px; margin-top: 24px; }

/* ── Forms ── */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-full { grid-column: 1/-1; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
label { font-size: 11px; font-family: var(--mono); color: var(--text3); text-transform: uppercase; letter-spacing: 0.1em; }
input[type=text], textarea {
  background: var(--bg2); border: 1px solid var(--border2);
  border-radius: 8px; padding: 10px 14px;
  color: var(--text); font-family: var(--sans); font-size: 13px;
  line-height: 1.6; resize: vertical; outline: none;
  transition: border-color 0.15s;
}
input[type=text]:focus, textarea:focus { border-color: var(--accent); }
textarea { min-height: 70px; }

/* ── PIN pad ── */
.pin-display {
  text-align: center; font-family: var(--mono); font-size: 28px;
  letter-spacing: 0.3em; color: var(--text2); margin-bottom: 20px;
  padding: 12px; background: var(--bg2); border-radius: 8px;
}
.pin-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.pin-btn {
  aspect-ratio: 1; font-size: 20px; font-family: var(--mono);
  background: var(--bg4); border: 1px solid var(--border2);
  border-radius: 10px; color: var(--text); cursor: pointer;
  transition: all 0.1s;
}
.pin-btn:hover { background: var(--border2); }
.pin-btn:active { transform: scale(0.94); }
.pin-ok { background: var(--accent2); border-color: var(--accent); color: #fff; }
.pin-ok:hover { background: var(--accent); }
.pin-clear { color: var(--text2); }
.pin-error { color: var(--red2); font-size: 12px; font-family: var(--mono); text-align: center; margin-top: 12px; min-height: 18px; }

/* ── File Upload ── */
.section-divider {
  font-family: var(--mono); font-size: 11px; color: var(--text3);
  text-transform: uppercase; letter-spacing: 0.1em;
  border-top: 1px solid var(--border); padding-top: 16px; margin-top: 4px;
}
.upload-area {
  border: 1px dashed var(--border2); border-radius: 10px;
  padding: 24px; text-align: center; cursor: pointer;
  transition: all 0.2s; color: var(--text3);
}
.upload-area:hover { border-color: var(--accent); color: var(--text2); }
.upload-area.drag { border-color: var(--accent); background: var(--bg4); }
.upload-icon { font-size: 28px; margin-bottom: 8px; }
.upload-area small { color: var(--text3); font-size: 11px; font-family: var(--mono); }
.file-list { display: flex; flex-direction: column; gap: 6px; margin-top: 10px; }
.file-item {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 12px; gap: 10px;
}
.file-item-name { font-family: var(--mono); font-size: 12px; color: var(--text2); flex: 1; }
.file-item-size { font-family: var(--mono); font-size: 11px; color: var(--text3); white-space: nowrap; }
.file-del { background: transparent; border: none; color: var(--text3); cursor: pointer; font-size: 16px; padding: 0 4px; }
.file-del:hover { color: var(--red2); }

/* ── Toast ── */
.toast {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--bg4); border: 1px solid var(--accent);
  border-radius: 8px; padding: 12px 20px;
  font-family: var(--mono); font-size: 13px; color: var(--text);
  opacity: 0; transform: translateY(8px);
  transition: all 0.3s; pointer-events: none; z-index: 999;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ── Project View (public) ── */
body.project-view { background: var(--bg); overflow-y: auto; }
.pv-container { max-width: 820px; margin: 0 auto; padding: 40px 24px 60px; }
.pv-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; }
.pv-back { font-family: var(--mono); font-size: 12px; color: var(--text3); }
.pv-back:hover { color: var(--text); }
.pv-tag { font-family: var(--mono); font-size: 11px; color: var(--text3); }
.pv-title { font-size: 28px; font-weight: 600; color: var(--text); margin-bottom: 24px; }

.context-link-box {
  background: var(--bg2); border: 1px solid var(--accent2);
  border-radius: var(--radius); padding: 18px 20px; margin-bottom: 28px;
}
.context-link-label { font-size: 11px; font-family: var(--mono); color: var(--accent); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.context-link-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.context-link-url { font-family: var(--mono); font-size: 13px; color: var(--text); background: var(--bg4); padding: 8px 14px; border-radius: 7px; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.context-link-hint { font-size: 12px; color: var(--text3); }

.pv-section { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 14px; }
.pv-section-status { border-left: 3px solid var(--green2); }
.pv-section-next { border-left: 3px solid var(--blue2); }
.pv-section-questions { border-left: 3px solid var(--amber2); }
.pv-section-title { font-size: 11px; font-family: var(--mono); color: var(--text3); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 10px; }
.pv-section-body { font-size: 14px; color: var(--text2); line-height: 1.7; white-space: pre-wrap; }
.pv-mono { font-family: var(--mono); font-size: 12px; }

.pv-files { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }
.pv-file { display: flex; align-items: center; gap: 10px; padding: 8px 12px; background: var(--bg3); border: 1px solid var(--border); border-radius: 8px; transition: all 0.15s; }
.pv-file:hover { border-color: var(--border2); }
.pv-file-icon { color: var(--text3); }
.pv-file-name { font-family: var(--mono); font-size: 12px; color: var(--text); flex: 1; }
.pv-file-size { font-family: var(--mono); font-size: 11px; color: var(--text3); }

.pv-footer { margin-top: 40px; text-align: center; font-family: var(--mono); font-size: 11px; color: var(--text3); }
.pv-footer a { color: var(--text3); }
.pv-footer a:hover { color: var(--accent); }

@media (max-width: 600px) {
  .form-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; padding: 16px; }
  .topbar { padding: 16px 16px 0; }
  .hint-box { margin: 16px 16px 0; }
  .sidebar { display: none; }
}