* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg-dark: #0a0f1a;
  --bg-panel: #111827;
  --bg-surface: #1f2937;
  --border: #374151;
  --text: #e5e7eb;
  --text-dim: #9ca3af;
  --accent: #3b82f6;
  --green: #22c55e;
  --yellow: #f59e0b;
  --red: #ef4444;
  --cyan: #06b6d4;
}

body {
  font-family: 'Segoe UI', 'SF Pro', -apple-system, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* NORTH DOCK - Header */
.dock-north {
  background: linear-gradient(180deg, #1e3a5f 0%, #0f2744 100%);
  border-bottom: 2px solid var(--accent);
  padding: 0.5rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 56px;
  flex-shrink: 0;
}

.system-title {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.system-title h1 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.5px;
}

.system-title .version {
  font-size: 0.7rem;
  color: var(--cyan);
  background: rgba(6, 182, 212, 0.2);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.status-dot.online { background: var(--green); }
.status-dot.warning { background: var(--yellow); }
.status-dot.alarm { background: var(--red); animation: blink 0.5s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.alarm-count {
  background: var(--yellow);
  color: #000;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
}

.alarm-count:hover { background: #fbbf24; }

.datetime {
  text-align: right;
  font-family: 'Consolas', 'Monaco', monospace;
}

.datetime .time {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--cyan);
}

.datetime .date {
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* MAIN CONTAINER */
.dock-container {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* WEST DOCK - Navigation */
.dock-west {
  width: 220px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.nav-section {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.nav-section-title {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
  padding-left: 0.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.nav-item:hover {
  background: var(--bg-surface);
  color: var(--text);
}

.nav-item.active {
  background: rgba(59, 130, 246, 0.2);
  color: var(--accent);
  border-left: 3px solid var(--accent);
  margin-left: -3px;
}

.nav-item .icon {
  font-size: 1rem;
  width: 24px;
  text-align: center;
}

.nav-item .badge {
  margin-left: auto;
  background: var(--yellow);
  color: #000;
  font-size: 0.65rem;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-weight: 600;
}

/* CENTER DOCK - Main Content */
.dock-center {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-dark);
}

.screen-header {
  background: var(--bg-surface);
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.screen-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.screen-title h2 {
  font-size: 1rem;
  font-weight: 500;
}

.screen-title .breadcrumb {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.screen-actions {
  display: flex;
  gap: 0.5rem;
}

.screen-actions button {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s;
}

.screen-actions button:hover {
  background: var(--bg-surface);
  color: var(--text);
}

.screen-content {
  flex: 1;
  overflow: hidden;
}

.screen-content iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: var(--bg-dark);
}

/* Overview Screen */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto 1fr 1fr;
  gap: 1rem;
  padding: 1rem;
  height: 100%;
  overflow: auto;
}

.kpi-row {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.75rem;
}

.kpi-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
}

.kpi-card .value {
  font-size: 1.75rem;
  font-weight: 700;
  font-family: 'Consolas', monospace;
}

.kpi-card .label {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.kpi-card .target {
  font-size: 0.65rem;
  color: var(--text-dim);
  margin-top: 0.5rem;
}

.kpi-card.good .value { color: var(--green); }
.kpi-card.warning .value { color: var(--yellow); }
.kpi-card.bad .value { color: var(--red); }

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.panel-header {
  background: var(--bg-surface);
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.panel-content {
  padding: 0.75rem;
  max-height: 300px;
  overflow-y: auto;
}

.alarm-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem;
  border-radius: 6px;
  margin-bottom: 0.5rem;
  cursor: pointer;
  font-size: 0.8rem;
}

.alarm-item:hover { background: var(--bg-surface); }

.alarm-item.high { border-left: 3px solid var(--red); }
.alarm-item.medium { border-left: 3px solid var(--yellow); }
.alarm-item.low { border-left: 3px solid var(--cyan); }
.alarm-item.info { border-left: 3px solid var(--text-dim); }

.alarm-item .priority {
  font-size: 0.65rem;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  text-transform: uppercase;
  font-weight: 600;
}

.alarm-item.high .priority { background: rgba(239, 68, 68, 0.2); color: var(--red); }
.alarm-item.medium .priority { background: rgba(245, 158, 11, 0.2); color: var(--yellow); }
.alarm-item.low .priority { background: rgba(6, 182, 212, 0.2); color: var(--cyan); }

.screen-tile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--bg-surface);
  border-radius: 6px;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all 0.15s;
}

.screen-tile:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--accent);
}

.screen-tile .icon {
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-panel);
  border-radius: 8px;
}

.screen-tile .info h4 {
  font-size: 0.85rem;
  font-weight: 500;
}

.screen-tile .info p {
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* EAST DOCK - Context Panel */
.dock-east {
  width: 280px;
  background: var(--bg-panel);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.dock-east .panel {
  border-radius: 0;
  border: none;
  border-bottom: 1px solid var(--border);
}

.mini-chart {
  height: 60px;
  display: flex;
  align-items: flex-end;
  gap: 3px;
  padding: 0.5rem;
}

.mini-chart .bar {
  flex: 1;
  background: var(--accent);
  border-radius: 2px 2px 0 0;
  min-height: 4px;
}

.row-officer-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
}

.row-officer-item:last-child { border-bottom: none; }

.row-officer-item .name { color: var(--text); }

.row-officer-item .oee {
  font-family: monospace;
  font-weight: 600;
}

/* SOUTH DOCK - Status Bar */
.dock-south {
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  padding: 0.4rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-dim);
  height: 32px;
  flex-shrink: 0;
}

.status-left, .status-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.status-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-item .indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-item .indicator.green { background: var(--green); }
.status-item .indicator.yellow { background: var(--yellow); }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #4b5563; }

@media (max-width: 1200px) {
  .dock-east { display: none; }
}

@media (max-width: 900px) {
  .dock-west { width: 60px; }
  .nav-item span:not(.icon) { display: none; }
  .nav-section-title { display: none; }
  .nav-item .badge { display: none; }
  .kpi-row { grid-template-columns: repeat(3, 1fr); }
}

/* Mobile: Full responsive */
@media (max-width: 640px) {
  body {
    height: auto;
    height: 100dvh;
    overflow: auto;
  }

  .dock-north {
    padding: 0.5rem;
    height: auto;
    min-height: 56px;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-top: max(0.5rem, env(safe-area-inset-top));
  }

  .system-title h1 { font-size: 1rem; }
  .system-title .version { display: none; }
  .datetime { display: none; }

  .dock-container {
    flex-direction: column;
    height: auto;
  }

  .dock-west {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    max-width: 85vw;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 200;
    overflow-y: auto;
    padding-top: env(safe-area-inset-top);
  }

  .dock-west.open {
    transform: translateX(0);
  }

  .dock-west.open ~ .mobile-overlay {
    opacity: 1;
    visibility: visible;
  }

  .dock-west .nav-item span:not(.icon) { display: inline; }
  .dock-west .nav-section-title { display: block; }
  .dock-west .nav-item .badge { display: inline; }

  .mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 150;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
  }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    margin-right: 0.5rem;
  }
}

/* Hide mobile menu button on desktop */
@media (min-width: 641px) {
  .mobile-menu-btn {
    display: none;
  }
}