/* ---------- Tokens ---------- */
:root{
  --canvas: #0a0d13;
  --surface: #12161f;
  --surface-2: #191e2a;
  --surface-3: #212736;
  --border: #2a3142;
  --border-soft: #1d2330;
  --text: #e9ecf3;
  --text-muted: #9aa3b5;
  --text-faint: #838c9e;
  --accent: #5b8cff;
  --accent-strong: #7ea2ff;
  --on-accent: #06101f;
  --focus: #8fb2ff;

  --status-todo: #9aa3b5;
  --status-inprogress: #f5b34e;
  --status-blocked: #ff6b6b;
  --status-done: #4ade9a;

  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-48: 48px;
  --space-64: 64px;
}

*, *::before, *::after{ box-sizing: border-box; }

html, body{
  margin:0;
  padding:0;
  background: var(--canvas);
  color: var(--text);
}

body{
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  background-image:
    linear-gradient(180deg, rgba(91,140,255,0.08), rgba(91,140,255,0) 320px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.02) 0px, rgba(255,255,255,0.02) 1px, transparent 1px, transparent 96px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.02) 0px, rgba(255,255,255,0.02) 1px, transparent 1px, transparent 96px);
  background-attachment: fixed;
  min-height: 100vh;
}

h1,h2,h3{ font-family: var(--font-body); margin: 0; }

.mono{ font-family: var(--font-mono); letter-spacing: 0.02em; }

.skip-link{
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--on-accent);
  padding: 10px 16px;
  z-index: 100;
  font-weight: 600;
  border-radius: 0 0 6px 0;
}
.skip-link:focus{ left: 0; }

:focus-visible{
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- Corner-frame signature device ---------- */
.corner-frame{ position: relative; }
.corner{
  position: absolute;
  width: 10px;
  height: 10px;
  border-color: var(--accent-strong);
  border-style: solid;
  border-width: 0;
  opacity: 0.85;
  pointer-events: none;
}
.corner-tl{ top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.corner-tr{ top: -1px; right: -1px; border-top-width: 2px; border-right-width: 2px; }
.corner-bl{ bottom: -1px; left: -1px; border-bottom-width: 2px; border-left-width: 2px; }
.corner-br{ bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }

/* ---------- Shell / layout ---------- */
.shell{
  max-width: 1320px;
  margin: 0 auto;
  padding: 32px 32px 96px;
}

.app-header{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-soft);
}

.brand{ display: flex; align-items: center; gap: 14px; }

.brand-mark{
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-strong);
  background: var(--surface);
  border: 1px solid var(--border);
}

.brand-text{ display:flex; flex-direction:column; gap: 2px; }

.brand-name{
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--text);
}

.brand-tagline{
  margin: 0;
  font-size: 11px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.header-status{
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- Stats strip ---------- */
.stats-strip{
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding: 20px 0;
}

.stat-chip{
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  flex: 1 1 150px;
}

.stat-dot{
  width: 9px;
  height: 9px;
  border-radius: 50%;
  align-self: center;
  flex-shrink: 0;
}

.stat-value{
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.stat-label{
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.status-todo{ background: var(--status-todo); }
.status-in-progress{ background: var(--status-inprogress); }
.status-blocked{ background: var(--status-blocked); }
.status-done{ background: var(--status-done); }

/* ---------- Layout grid ---------- */
.layout{
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 920px){
  .layout{
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
  }
  .side-rail{
    position: sticky;
    top: 24px;
  }
}

/* ---------- Toolbar ---------- */
.toolbar{
  display: flex;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.field{ display: flex; flex-direction: column; gap: 6px; }
.field label{
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.field-search{ flex: 1 1 260px; }

.input-wrap{
  position: relative;
  display: flex;
  align-items: center;
}
.search-icon{
  position: absolute;
  left: 12px;
  color: var(--text-faint);
  pointer-events: none;
}

#search-input{
  width: 100%;
  padding: 10px 12px 10px 36px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-size: 15px;
  font-family: var(--font-body);
}
#search-input::placeholder{ color: var(--text-faint); }
#search-input:focus-visible{ border-color: var(--accent); }

#filter-select, #status-control{
  padding: 10px 32px 10px 12px;
  background: var(--surface) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="14" height="14"><path d="M6 9l6 6 6-6" fill="none" stroke="%239aa3b5" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/></svg>') no-repeat right 10px center;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-size: 15px;
  font-family: var(--font-body);
  appearance: none;
  -webkit-appearance: none;
  min-width: 168px;
}
#filter-select:focus-visible, #status-control:focus-visible{ border-color: var(--accent); }

.result-count{
  margin: 0 0 0 auto;
  font-size: 12px;
  color: var(--text-faint);
  white-space: nowrap;
}

/* ---------- Item list ---------- */
.item-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.item{ display: block; }

.item-open{
  width: 100%;
  display: flex;
  align-items: stretch;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
  padding: 0;
}

.item-open:hover{
  border-color: var(--accent);
  background: var(--surface-2);
}

.item-bar{
  width: 4px;
  flex-shrink: 0;
}

.item-main{
  flex: 1 1 auto;
  min-width: 0;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.item-top{
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.item-code{
  font-size: 12px;
  color: var(--text-faint);
  flex-shrink: 0;
}

.item-title{
  font-size: 16px;
  font-weight: 650;
  color: var(--text);
}

.item-meta{
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
}

.dot-sep{ color: var(--text-faint); }

.pill{
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
}

.status-pill.status-todo{ color: #cfd4de; background: rgba(154,163,181,0.14); border-color: rgba(154,163,181,0.35); }
.status-pill.status-in-progress{ color: var(--status-inprogress); background: rgba(245,179,78,0.12); border-color: rgba(245,179,78,0.4); }
.status-pill.status-blocked{ color: var(--status-blocked); background: rgba(255,107,107,0.12); border-color: rgba(255,107,107,0.4); }
.status-pill.status-done{ color: var(--status-done); background: rgba(74,222,154,0.12); border-color: rgba(74,222,154,0.4); }

.item-tags{
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag-chip{
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  background: var(--surface-3);
  border: 1px solid var(--border);
  padding: 1px 8px;
  border-radius: 3px;
}

.item-aside{
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 16px;
  border-left: 1px solid var(--border-soft);
}

.priority-flag{
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 3px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.priority-flag.priority-high{ color: var(--status-blocked); border-color: rgba(255,107,107,0.4); }
.priority-flag.priority-medium{ color: var(--status-inprogress); border-color: rgba(245,179,78,0.4); }
.priority-flag.priority-low{ color: var(--text-faint); }

.comment-count{
  font-size: 12px;
  color: var(--text-faint);
  white-space: nowrap;
}

.chevron{
  color: var(--text-faint);
  font-size: 18px;
}

/* in-progress pulse, respects reduced motion */
@media (prefers-reduced-motion: no-preference){
  .stat-chip[data-status="in-progress"] .stat-dot{
    animation: pulse 2.2s ease-in-out infinite;
  }
}
@keyframes pulse{
  0%, 100%{ box-shadow: 0 0 0 0 rgba(245,179,78,0.5); }
  50%{ box-shadow: 0 0 0 4px rgba(245,179,78,0); }
}

/* ---------- Empty state ---------- */
.empty-state{
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  padding: 64px 24px;
  border: 1px dashed var(--border);
  border-radius: 6px;
  color: var(--text-muted);
}

.empty-icon{
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-faint);
  margin-bottom: 8px;
}

.empty-title{ font-size: 17px; font-weight: 700; color: var(--text); margin: 0; }
.empty-copy{ margin: 0; font-size: 14px; }

/* ---------- Buttons ---------- */
.btn{
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 4px;
  border: 1px solid var(--border);
  cursor: pointer;
}
.btn-secondary{
  background: var(--surface-2);
  color: var(--text);
}
.btn-secondary:hover{ border-color: var(--accent); color: var(--accent-strong); }

.icon-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-muted);
  cursor: pointer;
  flex-shrink: 0;
}
.icon-btn:hover{ color: var(--text); border-color: var(--accent); }

/* ---------- Side rail ---------- */
.side-rail{
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rail-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
}

.rail-heading{
  margin: 0 0 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
}

.rail-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rail-list li{
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.rail-list li strong{
  color: var(--text);
  font-weight: 600;
  font-size: 13px;
}

.rail-list-project li span:last-child{
  font-family: var(--font-mono);
  color: var(--text-faint);
}

.rail-empty{ color: var(--text-faint); font-size: 13px; }

/* ---------- Detail dialog ---------- */
.detail-dialog{
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 0;
  color: var(--text);
  background: var(--surface);
  width: min(560px, 92vw);
  max-height: min(720px, 88vh);
  margin: auto;
}

.detail-dialog::backdrop{
  background: rgba(4,6,10,0.72);
}

.detail-shell{
  height: 100%;
}

.detail-frame{
  padding: 24px;
  overflow-y: auto;
  max-height: min(720px, 88vh);
  height: 100%;
}

.detail-head{
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.id-tag{
  font-size: 12px;
  color: var(--accent-strong);
  margin: 0 0 6px;
}

#detail-title{
  font-size: 22px;
  font-weight: 750;
  line-height: 1.3;
}

.detail-meta{
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 12px 20px;
  margin: 0 0 20px;
  padding: 16px;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-radius: 4px;
}

.detail-meta div{ display: flex; flex-direction: column; gap: 3px; }
.detail-meta dt{
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}
.detail-meta dd{
  margin: 0;
  font-size: 14px;
  color: var(--text);
}

.detail-status-row{
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.detail-status-row label{
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.status-feedback{
  margin: 0;
  font-size: 13px;
  color: var(--status-done);
  min-height: 18px;
}

.detail-body h3{
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  margin: 0 0 10px;
}

.detail-body p{
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  white-space: pre-line;
  max-width: 62ch;
}

/* ---------- Mobile ---------- */
@media (max-width: 640px){
  .shell{ padding: 20px 20px 64px; }
  .app-header{ flex-direction: column; align-items: flex-start; gap: 12px; }
  .stats-strip{ padding: 16px 0; }
  .stat-chip{ flex: 1 1 42%; }
  .toolbar{ flex-direction: column; align-items: stretch; }
  .result-count{ margin: 0; }
  .field-filter{ width: 100%; }
  #filter-select{ width: 100%; }
  .item-open{ flex-direction: column; }
  .item-bar{ width: 100%; height: 4px; }
  .item-aside{ border-left: none; border-top: 1px solid var(--border-soft); padding: 10px 16px; justify-content: space-between; }
  .detail-dialog{ width: 100%; max-width: 100%; max-height: 100%; height: 100%; margin: 0; }
  .detail-frame{ max-height: 100%; }
  .detail-meta{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 420px){
  .detail-meta{ grid-template-columns: 1fr; }
}