/* ═══════════════════════════════════════════════════
   TECHSTARS OS · Theme: Light (default)
   ═══════════════════════════════════════════════════ */

/* ── CSS Variables ── */
:root {
  --bg:           #f4f4f5;
  --bg-card:      #ffffff;
  --bg-hover:     #f9fafb;
  --bg-input:     #ffffff;
  --bg-selected:  #f0faf3;
  --bg-nav:       #111111;
  --bg-terminal:  #0d0d0d;
  --border:       #e4e4e7;
  --border-mid:   #d1d5db;
  --text-primary: #111111;
  --text-muted:   #6b7280;
  --text-faint:   #9ca3af;
  --green:        #39C463;
  --green-dark:   #16a34a;
  --green-dim:    rgba(22,163,74,0.08);
  --green-border: rgba(22,163,74,0.22);
  --red:          #dc2626;
  --red-dim:      rgba(220,38,38,0.07);
  --red-border:   rgba(220,38,38,0.2);
  --amber:        #d97706;
  --amber-dim:    rgba(217,119,6,0.08);
  --amber-border: rgba(217,119,6,0.2);
  --blue:         #4b6a82;
  --sidebar-w:    300px;
  --panel-w:      400px;
  --nav-h:        56px;
  --hud-h:        40px;
}

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

html, body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

::selection { background: var(--green-dim); color: var(--green-dark); }

/* ── Utilities ── */
.mono { font-family: 'JetBrains Mono', monospace; }

/* ── Section divider ── */
.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.section-label span {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}
.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Card ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 24px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  border: 1px solid transparent;
  line-height: 1;
}
.btn-primary   { background: var(--green); color: #000; border-color: var(--green); }
.btn-primary:hover { background: #2dab52; border-color: #2dab52; }
.btn-secondary { background: transparent; color: var(--text-primary); border-color: var(--border-mid); }
.btn-secondary:hover { background: var(--bg-hover); border-color: var(--border-mid); }
.btn-ghost     { background: transparent; color: var(--text-muted); border-color: transparent; }
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }
.btn-danger    { background: transparent; color: var(--red); border-color: var(--red-border); }
.btn-danger:hover { background: var(--red-dim); }
.btn-sm { padding: 5px 12px; font-size: 12px; }

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.badge-green   { background: var(--green-dim);  color: var(--green-dark); border: 1px solid var(--green-border); }
.badge-red     { background: var(--red-dim);    color: var(--red);        border: 1px solid var(--red-border); }
.badge-amber   { background: var(--amber-dim);  color: var(--amber);      border: 1px solid var(--amber-border); }
.badge-neutral { background: var(--bg-hover);   color: var(--text-muted); border: 1px solid var(--border); }

/* ── Form inputs ── */
.input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-mid);
  color: var(--text-primary);
  padding: 8px 12px;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}
.input::placeholder { color: var(--text-faint); }
.input:focus { border-color: #3a3a3a; box-shadow: 0 0 0 3px rgba(57,196,99,0.08); }
.input-error { border-color: var(--red-border); }
.input-error:focus { box-shadow: 0 0 0 3px var(--red-dim); }

label.field-label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
}

/* ── Score display ── */
.score-positive { color: var(--green-dark); font-weight: 600; font-family: 'JetBrains Mono', monospace; }
.score-warning  { color: var(--amber);      font-weight: 600; font-family: 'JetBrains Mono', monospace; }
.score-negative { color: var(--red);        font-weight: 600; font-family: 'JetBrains Mono', monospace; }

/* ── Progress bar ── */
.progress-bar      { height: 3px; background: var(--border); overflow: hidden; width: 64px; }
.progress-bar-fill { height: 100%; background: var(--green); transition: width 0.3s; }

/* ── Data table (style guide) ── */
.data-table { width: 100%; border-collapse: collapse; }
.data-table thead tr { border-bottom: 1px solid var(--border); }
.data-table th {
  text-align: left;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 10px 16px;
}
.data-table td { padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: 13px; }
.data-table tbody tr:hover { background: var(--bg-hover); }
.data-table tbody tr:last-child td { border-bottom: none; }

/* ── Dots ── */
.dot       { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.dot-green { background: var(--green); }
.dot-red   { background: var(--red); }
.dot-amber { background: var(--amber); }
.dot-muted { background: var(--border-mid); }

/* ════════════════════════════════════════════════════
   APP LAYOUT  (app.html)
   ════════════════════════════════════════════════════ */

#app { display: flex; flex-direction: column; height: 100vh; }

/* ── Nav ── */
#nav {
  height: var(--nav-h);
  background: #111;
  border-bottom: 1px solid #222;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  flex-shrink: 0;
  z-index: 40;
}

/* ── HUD ── */
#hud {
  height: var(--hud-h);
  background: #1a1a1a;
  border-bottom: 1px solid #2a2a2a;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  overflow-x: auto;
}
.hud-label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #444;
  padding: 0 16px;
  border-right: 1px solid #2a2a2a;
  height: 100%;
  display: flex;
  align-items: center;
  white-space: nowrap;
}
.hud-cell {
  padding: 0 16px;
  border-right: 1px solid #2a2a2a;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  flex-shrink: 0;
}
.hud-cell:hover { background: #222; }
.hud-cell span:first-child { font-size: 12px; color: #888; }
.hud-value { font-family: 'JetBrains Mono', monospace; font-size: 12px; font-weight: 600; }

/* ── Body row ── */
#body { display: flex; flex: 1; overflow: hidden; }

/* ── Filter sidebar ── */
#sidebar {
  width: var(--sidebar-w);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex-shrink: 0;
}
.sidebar-section { padding: 16px; border-bottom: 1px solid var(--border); }
.sidebar-title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 5px 0;
  cursor: pointer;
}
.filter-row:hover span:last-child { color: var(--text-primary); }
.check {
  width: 15px; height: 15px;
  border: 1px solid var(--border-mid);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.check.checked { background: var(--green-dim); border-color: var(--green-border); }

/* ── Main content ── */
#main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }

/* ── Toolbar ── */
#toolbar {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-input {
  flex: 1;
  max-width: 280px;
  background: var(--bg-input);
  border: 1px solid var(--border-mid);
  color: var(--text-primary);
  padding: 7px 12px;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  outline: none;
}
.search-input::placeholder { color: var(--text-faint); }
.search-input:focus { border-color: #3a3a3a; }

/* ── Stats bar ── */
#statsbar {
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-shrink: 0;
}
.stat-item  { display: flex; align-items: baseline; gap: 6px; }
.stat-value { font-size: 20px; font-weight: 700; letter-spacing: -0.02em; }
.stat-label { font-size: 11px; color: var(--text-muted); }

/* ── App table ── */
#table-wrap { flex: 1; overflow-y: auto; }
table { width: 100%; border-collapse: collapse; }
thead tr { border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--bg); z-index: 2; }
th {
  text-align: left;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 10px 16px;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}
th:hover { color: var(--text-primary); }
th.sorted { color: var(--text-primary); }
td { padding: 11px 16px; border-bottom: 1px solid var(--border); font-size: 13px; vertical-align: middle; }
tbody tr { cursor: pointer; transition: background 0.1s; }
tbody tr:hover { background: var(--bg-hover); }
tbody tr.selected { background: var(--bg-selected); border-left: 2px solid var(--green); }
tbody tr.selected td:first-child { padding-left: 14px; }

/* ── Detail panel ── */
#detail {
  width: var(--panel-w);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}
#detail-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-shrink: 0;
}
#detail-body { flex: 1; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 20px; }
.detail-section { display: flex; flex-direction: column; gap: 10px; }
.detail-section-title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.kv-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.kv-key { font-size: 12px; color: var(--text-muted); flex-shrink: 0; }
.kv-val { font-size: 12px; color: var(--text-primary); text-align: right; }

/* ── Vote / Rating ── */
.vote-btn {
  width: 32px; height: 32px;
  border: 1px solid var(--border-mid);
  background: transparent;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.15s;
  color: var(--text-muted);
}
.vote-btn:hover      { border-color: var(--green-border); color: var(--green); background: var(--green-dim); }
.vote-btn.active-up  { border-color: var(--green-border); color: var(--green); background: var(--green-dim); }
.vote-btn.active-down { border-color: var(--red-border);  color: var(--red);   background: var(--red-dim); }

.star    { color: var(--border-mid); cursor: pointer; font-size: 16px; transition: color 0.1s; }
.star.on { color: var(--amber); }

/* ── Activity log ── */
.activity-entry { display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.activity-entry:last-child { border-bottom: none; }
.activity-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; margin-top: 5px; }

/* ── Diagnostic log ── */
#diag-log {
  background: #0d0d0d;
  border: 1px solid #2a2a2a;
  padding: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  line-height: 1.8;
  overflow-x: auto;
  max-height: 220px;
  overflow-y: auto;
  color: #e0e0e0;
}

/* ── Vertical tag ── */
.vertical-tag {
  font-size: 11px; font-weight: 500; padding: 2px 7px;
  background: rgba(130,152,171,0.1);
  color: var(--blue);
  border: 1px solid rgba(130,152,171,0.2);
}