:root {
  --bg: #0f172a;
  --bg-2: #1e293b;
  --card: #1e293b;
  --card-2: #334155;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --primary: #3b82f6;
  --primary-2: #2563eb;
  --success: #10b981;
  --danger: #ef4444;
  --warn: #f59e0b;
  --border: #334155;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Arabic", "Segoe UI", "Tahoma", system-ui, sans-serif;
  background: linear-gradient(180deg, #0b1220 0%, #0f172a 100%);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  padding-bottom: env(safe-area-inset-bottom);
}
body[data-mode="viewer"] .controls,
body[data-mode="viewer"] .camera-wrap,
body[data-mode="viewer"] .settings { display: none !important; }
body[data-mode="viewer"] .badge-mode { background: #7c3aed; border-color: #6d28d9; color: #fff; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  padding-top: max(14px, env(safe-area-inset-top));
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(15,23,42,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  gap: 10px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand h1 { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: .2px; }
.dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 12px var(--success);
  animation: pulse 1.6s infinite;
}
@keyframes pulse { 50% { opacity: .35; } }
.topbar-right { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.badge-mode {
  font-size: 11px;
  background: var(--card);
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: 999px;
}
.status {
  font-size: 12px; color: var(--muted);
  background: var(--card);
  border: 1px solid var(--border);
  padding: 6px 10px; border-radius: 999px;
}
.status.error { color: #fecaca; border-color: #7f1d1d; background: #450a0a; }
.status.ok { color: #bbf7d0; border-color: #14532d; background: #052e16; }

.stage {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.counters {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.counter-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px 10px;
  text-align: center;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: border-color .3s, background .3s;
}
.counter-card::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.04), transparent);
  pointer-events: none;
}
.counter-card .label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.counter-card .value {
  display: block;
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.counter-card .capacity-hint {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
  min-height: 14px;
}
.counter-card.in .value { color: #6ee7b7; }
.counter-card.out .value { color: #fca5a5; }
.counter-card.net .value { color: #93c5fd; }
.counter-card.net.warn { border-color: var(--warn); background: rgba(245,158,11,.1); }
.counter-card.net.warn .value { color: var(--warn); }
.counter-card.net.full {
  border-color: var(--danger);
  background: rgba(239,68,68,.15);
  animation: alertShake .5s ease;
}
.counter-card.net.full .value { color: var(--danger); }

@keyframes alertShake {
  0%,100% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(3px); }
}

@keyframes valuePulse {
  0% { transform: scale(1); }
  40% { transform: scale(1.18); }
  100% { transform: scale(1); }
}
.counter-card .value.bump { animation: valuePulse .5s cubic-bezier(.34,1.56,.64,1); }

.capacity-bar {
  position: relative;
  height: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.capacity-fill {
  position: absolute; inset: 0 100% 0 0;
  background: linear-gradient(90deg, var(--success), var(--primary));
  border-radius: 999px;
  transition: inset .3s ease, background .3s;
}
.capacity-fill.warn { background: linear-gradient(90deg, var(--warn), #f97316); }
.capacity-fill.full { background: linear-gradient(90deg, var(--danger), #b91c1c); }
.capacity-text {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 10px;
  color: var(--text);
  text-shadow: 0 1px 2px rgba(0,0,0,.5);
  font-variant-numeric: tabular-nums;
}

.camera-wrap {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  background: #000;
  border: 1px solid var(--border);
  aspect-ratio: 3 / 4;
  box-shadow: var(--shadow);
  user-select: none;
  -webkit-user-select: none;
}
#video, #overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.line-handle {
  position: absolute;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  cursor: grab;
  touch-action: none;
}
.line-handle.dragging { cursor: grabbing; }
.line-handle.horizontal {
  left: 0; right: 0;
  height: 44px;
  transform: translateY(-50%);
}
.line-handle.vertical {
  top: 0; bottom: 0;
  width: 44px;
  transform: translateX(-50%);
}
.line-handle-grip {
  width: 60px;
  height: 24px;
  background: rgba(59,130,246,.95);
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,.5), 0 0 0 4px rgba(59,130,246,.25);
  position: relative;
}
.line-handle-grip::before {
  content: "≡";
  color: #fff;
  font-size: 18px;
  font-weight: bold;
  line-height: 1;
}
.line-handle.vertical .line-handle-grip { width: 24px; height: 60px; }
.line-handle.vertical .line-handle-grip::before { content: "⋮"; font-size: 22px; }

.cam-info {
  position: absolute;
  top: 10px; left: 10px; right: 10px;
  display: flex; gap: 6px;
  font-size: 11px; color: #fff;
  flex-wrap: wrap;
  z-index: 4;
  pointer-events: none;
}
.cam-info span {
  background: rgba(0,0,0,.55);
  padding: 4px 8px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}
.cam-info .hint { background: rgba(59,130,246,.7); margin-right: auto; }
.cam-info .hint.hidden { display: none; }

.empty-state {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  z-index: 3;
  background: rgba(15,23,42,.4);
  backdrop-filter: blur(2px);
}
.empty-state.hidden { display: none; }
.empty-card {
  text-align: center;
  background: rgba(15,23,42,.85);
  padding: 24px;
  border-radius: 16px;
  border: 1px solid var(--border);
  max-width: 280px;
}
.empty-icon { font-size: 40px; margin-bottom: 8px; }
.empty-card h3 { margin: 0 0 6px; font-size: 18px; }
.empty-card p { margin: 4px 0; color: var(--muted); font-size: 13px; }
.empty-card .empty-tip { color: var(--text); margin-top: 12px; }
.empty-card strong { color: var(--primary); }

.capacity-flash {
  position: absolute; inset: 0;
  background: var(--danger);
  opacity: 0;
  pointer-events: none;
  z-index: 6;
}
.capacity-flash.flash { animation: flashRed .6s ease; }
@keyframes flashRed {
  0%,100% { opacity: 0; }
  30% { opacity: .35; }
}

.controls {
  display: flex; gap: 8px; flex-wrap: wrap;
}
.btn {
  flex: 1;
  min-width: 70px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .08s ease, background .2s ease, border-color .2s;
  font-family: inherit;
}
.btn:active { transform: scale(.97); }
.btn:hover:not(:disabled) { background: var(--card-2); }
.btn.primary {
  background: var(--primary);
  border-color: var(--primary-2);
  color: #fff;
}
.btn.primary:hover:not(:disabled) { background: var(--primary-2); }
.btn.icon { flex: 0 0 48px; min-width: 48px; }
.btn.small { flex: 0 0 auto; min-width: auto; padding: 8px 12px; font-size: 12px; }
.btn.block { flex: 1 1 100%; width: 100%; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.chart-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
}
.chart-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px;
}
.chart-head h2 { margin: 0; font-size: 14px; color: var(--text); font-weight: 600; }
.chart-sub { font-size: 11px; color: var(--muted); }
.chart-wrap {
  position: relative;
  height: 160px;
}
#hourlyChart {
  width: 100%;
  height: 100%;
  display: block;
}
.chart-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 12px;
}
.chart-empty.hidden { display: none; }

.settings, .history {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
}
.settings summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.settings summary::-webkit-details-marker { display: none; }
.settings summary::after {
  content: "▾";
  color: var(--muted);
  transition: transform .2s;
}
.settings[open] summary::after { transform: rotate(180deg); }
.settings hr {
  border: none;
  border-top: 1px dashed var(--border);
  margin: 14px 0 6px;
}

.setting-row {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
}
.setting-row label { color: var(--muted); }
.setting-row select,
.setting-row input[type=range],
.setting-row input[type=number] {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px;
  font-family: inherit;
  font-size: 13px;
}
.setting-row input[type=range] { padding: 0; accent-color: var(--primary); }
.setting-row input[type=checkbox] {
  width: 22px;
  height: 22px;
  accent-color: var(--primary);
  margin: 0;
}
.setting-hint { font-size: 11px; color: var(--muted); }
.settings-group-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--primary);
  margin: 14px 0 4px;
}

/* ─── Smart Summary ─── */
.summary-card {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border: 1px solid #3b82f630;
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow);
}
.summary-head {
  display: flex; align-items: center; gap: 8px; margin-bottom: 12px;
}
.summary-head h2 { margin: 0; font-size: 15px; font-weight: 700; flex: 1; }
.summary-icon { font-size: 20px; }
.summary-date { font-size: 11px; color: var(--muted); }
.summary-list { list-style: none; margin: 0; padding: 0; }
.summary-list li {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 0;
  font-size: 13px;
  border-bottom: 1px dashed #334155;
}
.summary-list li:last-child { border-bottom: none; }
.summary-list .s-icon { font-size: 16px; width: 24px; text-align: center; }
.summary-compare {
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  padding: 6px;
  background: rgba(255,255,255,.03);
  border-radius: 8px;
}
.compare-up   { color: #6ee7b7; font-weight: 700; }
.compare-down { color: #fca5a5; font-weight: 700; }

/* ─── Dashboard Mode ─── */
.dashboard {
  position: fixed; inset: 0;
  z-index: 200;
  display: flex; align-items: center; justify-content: center;
  animation: fadeIn .3s ease;
}
.dashboard[hidden] { display: none; }
.dash-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 30%, #0b1e40 0%, #050c1a 60%, #000 100%);
}
.dash-content {
  position: relative;
  width: 100%;
  max-width: 900px;
  padding: env(safe-area-inset-top, 20px) 24px env(safe-area-inset-bottom, 20px);
  display: flex; flex-direction: column; align-items: center; gap: 24px;
}
.dash-header {
  text-align: center;
  width: 100%;
}
.dash-title {
  font-size: clamp(16px, 3vw, 22px);
  font-weight: 600;
  color: rgba(255,255,255,.5);
  margin-bottom: 4px;
}
.dash-datetime {
  display: flex; gap: 12px; justify-content: center; align-items: baseline;
}
.dash-time {
  font-size: clamp(28px, 8vw, 56px);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: #fff;
  letter-spacing: 2px;
}
.dash-date {
  font-size: clamp(13px, 2vw, 18px);
  color: rgba(255,255,255,.45);
}
.dash-counters {
  display: grid;
  grid-template-columns: 1fr 1.4fr 1fr;
  gap: 16px;
  width: 100%;
}
.dash-card {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 20px;
  padding: 20px 10px;
  position: relative;
  overflow: hidden;
}
.dash-card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.06), transparent);
  pointer-events: none;
}
.dash-label {
  font-size: clamp(12px, 1.8vw, 16px);
  color: rgba(255,255,255,.45);
  font-weight: 600;
}
.dash-value {
  font-size: clamp(36px, 12vw, 90px);
  font-weight: 900;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.dash-main {
  font-size: clamp(52px, 18vw, 140px);
}
.dash-arrow {
  font-size: clamp(20px, 4vw, 32px);
  opacity: .4;
}
.dash-in  .dash-value { color: #6ee7b7; }
.dash-out .dash-value { color: #fca5a5; }
.dash-net .dash-value { color: #fff; }
.dash-cap {
  font-size: 14px;
  color: rgba(255,255,255,.4);
  font-variant-numeric: tabular-nums;
}
.dash-summary {
  font-size: clamp(13px, 2vw, 16px);
  color: rgba(255,255,255,.4);
  text-align: center;
  max-width: 500px;
}
.dash-capacity-bar {
  width: 100%;
  max-width: 400px;
  height: 8px;
  background: rgba(255,255,255,.1);
  border-radius: 999px;
  overflow: hidden;
}
.dash-capacity-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981, #3b82f6);
  border-radius: 999px;
  transition: width .5s ease;
}
.dash-exit {
  position: absolute;
  top: max(14px, env(safe-area-inset-top));
  left: 16px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.6);
  font-size: 20px;
  width: 44px; height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s;
  z-index: 1;
}
.dash-exit:hover { background: rgba(255,255,255,.16); color: #fff; }

.history h2 { margin: 0 0 10px; font-size: 14px; color: var(--muted); font-weight: 600; }
.history ul { list-style: none; margin: 0; padding: 0; max-height: 200px; overflow-y: auto; }
.history li {
  display: flex; justify-content: space-between;
  padding: 8px 0;
  font-size: 13px;
  border-bottom: 1px dashed var(--border);
}
.history li:last-child { border-bottom: none; }
.history li .ev-in { color: #6ee7b7; }
.history li .ev-out { color: #fca5a5; }
.history li .ev-time { color: var(--muted); font-variant-numeric: tabular-nums; }
.history .empty { color: var(--muted); font-size: 13px; padding: 8px 0; }

.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.7);
  z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: fadeIn .2s ease;
}
@keyframes fadeIn { from { opacity: 0; } }
.modal[hidden] { display: none; }
.modal-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
  max-width: 420px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow);
  animation: slideUp .3s cubic-bezier(.34,1.56,.64,1);
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } }
.modal-card h2 { margin: 0 0 8px; font-size: 18px; }
.modal-desc { color: var(--muted); font-size: 13px; margin: 0 0 16px; }
.modal-close {
  position: absolute;
  top: 10px; left: 10px;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
}
.modal-close:hover { background: var(--card-2); color: var(--text); }

.modal-card.alert { text-align: center; }
.modal-card.alert .alert-icon { font-size: 48px; margin-bottom: 8px; }

.share-status {
  background: rgba(16,185,129,.12);
  border: 1px solid rgba(16,185,129,.3);
  color: #6ee7b7;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 13px;
  margin-bottom: 12px;
}
.share-status.error {
  background: rgba(239,68,68,.12);
  border-color: rgba(239,68,68,.3);
  color: #fca5a5;
}

.share-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
  background: var(--bg-2);
  padding: 4px;
  border-radius: 10px;
}
.share-tab {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 8px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.share-tab.active {
  background: var(--card);
  color: var(--text);
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
}

.share-pane[hidden] { display: none; }
.share-instr { color: var(--muted); font-size: 13px; margin: 0 0 12px; }

.share-result { margin-top: 16px; }
.share-code {
  text-align: center;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 12px;
}
.share-code-label {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
}
.share-code-value {
  display: block;
  font-size: 32px;
  font-weight: 800;
  letter-spacing: 6px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  color: var(--primary);
}
.share-qr {
  background: #fff;
  padding: 12px;
  border-radius: 12px;
  display: flex;
  justify-content: center;
  margin-bottom: 12px;
  min-height: 200px;
  align-items: center;
}
.share-qr canvas, .share-qr img { display: block; }
.share-link-wrap {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}
.share-link-wrap input {
  flex: 1;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px;
  font-size: 12px;
  font-family: ui-monospace, monospace;
  direction: ltr;
}

#joinCode {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 14px;
  font-size: 24px;
  text-align: center;
  letter-spacing: 6px;
  font-family: ui-monospace, monospace;
  font-weight: bold;
  margin-bottom: 12px;
  text-transform: uppercase;
}

@media (max-width: 380px) {
  .counter-card .value { font-size: 24px; }
  .setting-row { grid-template-columns: 90px 1fr auto; }
  .share-code-value { font-size: 26px; letter-spacing: 4px; }
}

@media print {
  body { background: #fff; color: #000; }
  .topbar, .controls, .settings, .camera-wrap, .modal, .capacity-flash { display: none !important; }
  .stage { padding: 0; }
  .chart-section, .history, .counters .counter-card {
    background: #fff;
    border: 1px solid #ccc;
    color: #000;
    box-shadow: none;
  }
  .counter-card .value { color: #000 !important; }
}