/* ── CSS Variables ─────────────────────────────────────────────────────── */
:root {
  /* Dark Theme Base */
  --bg-primary:    #0a0e27;
  --bg-secondary:  #0f1535;
  --bg-tertiary:   #1a1f3a;
  --bg-surface:    #141829;
  --bg-card:       rgba(30, 35, 70, 0.4);
  --bg-hover:      rgba(50, 60, 100, 0.3);
  
  /* Gradients */
  --grad-dark:     linear-gradient(135deg, #0a0e27 0%, #1a1f3a 100%);
  --grad-accent:   linear-gradient(135deg, #00d9ff 0%, #0099cc 100%);
  --grad-success:  linear-gradient(135deg, #00ff88 0%, #00cc66 100%);
  --grad-danger:   linear-gradient(135deg, #ff1744 0%, #cc0033 100%);
  --grad-warning:  linear-gradient(135deg, #ffaa00 0%, #ff6600 100%);
  --grad-card:     linear-gradient(135deg, rgba(100, 120, 255, 0.1) 0%, rgba(30, 200, 255, 0.05) 100%);
  
  /* Colors */
  --cyan:          #00d9ff;
  --cyan-dark:     #0099cc;
  --green:         #00ff88;
  --red:           #ff1744;
  --orange:        #ffaa00;
  --gold:          #ffd700;
  --purple:        #b24bff;
  --pink:          #ff1493;
  
  /* Text Colors */
  --text-primary:   #f0f4ff;
  --text-secondary: #c0c8ff;
  --text-muted:     #7a8aaa;
  --text-bright:    #ffffff;
  
  /* Borders & Effects */
  --border-glow:    rgba(0, 217, 255, 0.2);
  --border-light:   rgba(255, 255, 255, 0.08);
  --border-medium:  rgba(255, 255, 255, 0.12);
  --border-dark:    rgba(0, 0, 0, 0.3);
  --glow-cyan:      0 0 20px rgba(0, 217, 255, 0.3);
  --glow-cyan-strong: 0 0 30px rgba(0, 217, 255, 0.5);
  --shadow-lg:      0 20px 60px rgba(0, 0, 0, 0.5);
  
  /* Typography */
  --font-main:      'Inter', sans-serif;
  --font-mono:      'JetBrains Mono', monospace;
  --radius-sm:      6px;
  --radius-md:      10px;
  --radius-lg:      14px;
  --radius-xl:      20px;
  
  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-mid:  0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body { 
  height: 100%; 
  width: 100%;
}

body {
  font-family: var(--font-main);
  background: var(--grad-dark);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow: hidden;
}

/* ── Header ────────────────────────────────────────────────────────────── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-surface);
  backdrop-filter: blur(10px);
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    var(--cyan) 20%, 
    var(--cyan) 80%, 
    transparent 100%);
  opacity: 0.4;
}

header h1 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-bright);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

header h1 span { 
  color: var(--cyan);
  -webkit-text-fill-color: var(--cyan);
}

.header-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 170, 0, 0.15);
  color: var(--orange);
  border: 1px solid rgba(255, 170, 0, 0.3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  backdrop-filter: blur(10px);
}

/* ── Layout ────────────────────────────────────────────────────────────── */
.app {
  display: grid;
  grid-template-columns: 1fr 340px;
  grid-template-rows: auto 1fr;
  gap: 0;
  flex: 1;
  overflow: hidden;
}

/* ── Controls ──────────────────────────────────────────────────────────── */
.controls {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 14px 24px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
  backdrop-filter: blur(10px);
}

.ctrl-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ctrl-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.ctrl-group input[type=number] {
  width: 56px;
  padding: 7px 10px;
  font-size: 13px;
  font-family: var(--font-mono);
  font-weight: 500;
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
}

.ctrl-group input[type=number]:focus { 
  border-color: var(--cyan);
  box-shadow: 0 0 16px rgba(0, 217, 255, 0.2);
  background: rgba(0, 217, 255, 0.05);
}

.divider { 
  width: 1px; 
  height: 28px; 
  background: linear-gradient(180deg, transparent 0%, var(--border-medium) 50%, transparent 100%);
}

/* ── Buttons ───────────────────────────────────────────────────────────── */
button {
  padding: 8px 18px;
  font-size: 13px;
  font-family: var(--font-main);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1.5px solid var(--border-medium);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}

button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left var(--transition-mid);
}

button:hover::before {
  left: 100%;
}

button:hover {
  background: var(--bg-hover);
  border-color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 217, 255, 0.15);
}

button:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(0, 217, 255, 0.1);
}

button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

button.primary {
  background: var(--grad-accent);
  border-color: var(--cyan);
  color: #0a0e27;
  font-weight: 700;
  box-shadow: 0 0 16px rgba(0, 217, 255, 0.2);
}

button.primary:hover {
  box-shadow: var(--glow-cyan-strong);
  transform: translateY(-3px);
}

button.danger {
  background: rgba(255, 23, 68, 0.15);
  border-color: rgba(255, 23, 68, 0.3);
  color: var(--red);
}

button.danger:hover {
  background: rgba(255, 23, 68, 0.25);
  border-color: var(--red);
  box-shadow: 0 0 12px rgba(255, 23, 68, 0.2);
}

button.active {
  background: rgba(255, 170, 0, 0.2);
  border-color: var(--orange);
  color: var(--orange);
  box-shadow: 0 0 12px rgba(255, 170, 0, 0.15);
}

/* ── Canvas ────────────────────────────────────────────────────────────── */
.canvas {
  overflow: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px;
  background: var(--grad-dark);
}

#grid-outer {
  background: var(--bg-card);
  border: 1.5px solid var(--border-glow);
  border-radius: var(--radius-xl);
  padding: 16px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 217, 255, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: all var(--transition-slow);
}

#grid-outer:hover {
  border-color: rgba(0, 217, 255, 0.4);
  box-shadow: 0 12px 40px rgba(0, 217, 255, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

#grid {
  display: inline-grid;
  gap: 6px;
  animation: gridFadeIn 0.6s ease-out;
}

@keyframes gridFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ── Grid Cells ────────────────────────────────────────────────────────── */
.cell {
  width: 88px;
  height: 88px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  border: 2px solid transparent;
  background: var(--bg-secondary);
  transition: all var(--transition-mid);
  cursor: default;
  user-select: none;
  backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
}

.cell::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), transparent);
  pointer-events: none;
  border-radius: var(--radius-lg);
}

.cell:hover.clickable {
  transform: translateY(-4px);
  cursor: pointer;
}

.cell-coord {
  position: absolute;
  top: 6px;
  left: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  opacity: 0.6;
}

.cell-icon {
  font-size: 32px;
  line-height: 1;
  animation: cellIconPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes cellIconPop {
  0% {
    opacity: 0;
    transform: scale(0.3) rotateZ(-15deg);
  }
  60% {
    transform: scale(1.1);
  }
  100% {
    opacity: 1;
    transform: scale(1) rotateZ(0deg);
  }
}

.cell-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  margin-top: 4px;
  opacity: 0.8;
  text-align: center;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.cell-percepts {
  position: absolute;
  bottom: 6px;
  font-size: 13px;
  line-height: 1;
  animation: perceptsPulse 0.6s ease;
}

@keyframes perceptsPulse {
  0% {
    opacity: 0;
    transform: scale(0.5);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* ── Cell States ───────────────────────────────────────────────────────── */
.c-fog {
  background: linear-gradient(135deg, #0f1535 0%, #1a1f3a 100%);
  border-color: var(--border-medium);
}

.c-visited {
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.12) 0%, rgba(0, 153, 204, 0.08) 100%);
  border-color: rgba(0, 217, 255, 0.25);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 20px rgba(0, 217, 255, 0.1);
}

.c-safe {
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.15) 0%, rgba(0, 204, 102, 0.08) 100%);
  border-color: rgba(0, 255, 136, 0.4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 20px rgba(0, 255, 136, 0.1);
}

.c-agent {
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.25) 0%, rgba(0, 153, 204, 0.15) 100%);
  border-color: var(--cyan);
  border-width: 2.5px;
  box-shadow: 0 0 24px rgba(0, 217, 255, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  animation: agentGlow 1.5s ease-in-out infinite;
}

@keyframes agentGlow {
  0%, 100% {
    box-shadow: 0 0 24px rgba(0, 217, 255, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  }
  50% {
    box-shadow: 0 0 32px rgba(0, 217, 255, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  }
}

.c-pit {
  background: linear-gradient(135deg, rgba(255, 23, 68, 0.2) 0%, rgba(255, 23, 68, 0.08) 100%);
  border-color: rgba(255, 23, 68, 0.4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 20px rgba(255, 23, 68, 0.15);
}

.c-wumpus {
  background: linear-gradient(135deg, rgba(178, 75, 255, 0.2) 0%, rgba(178, 75, 255, 0.08) 100%);
  border-color: rgba(178, 75, 255, 0.4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 20px rgba(178, 75, 255, 0.15);
}

.c-gold {
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.2) 0%, rgba(255, 215, 0, 0.08) 100%);
  border-color: rgba(255, 215, 0, 0.5);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 20px rgba(255, 215, 0, 0.2);
  animation: goldShine 2s ease-in-out infinite;
}

@keyframes goldShine {
  0%, 100% {
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 20px rgba(255, 215, 0, 0.2);
  }
  50% {
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 30px rgba(255, 215, 0, 0.4);
  }
}

/* ── Legend ────────────────────────────────────────────────────────────── */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
  padding: 0 8px;
}

.leg {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.leg:hover {
  color: var(--text-primary);
}

.leg-swatch {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  flex-shrink: 0;
  border: 1.5px solid var(--border-medium);
  transition: all var(--transition-fast);
}

.leg:hover .leg-swatch {
  transform: scale(1.15);
  border-color: var(--cyan);
}

/* ── Sidebar ───────────────────────────────────────────────────────────── */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
  overflow-x: hidden;
  border-left: 1px solid var(--border-light);
  background: var(--bg-surface);
  backdrop-filter: blur(10px);
}

.panel {
  padding: 18px 18px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.panel:last-child {
  border-bottom: none;
  flex: 1;
  overflow: hidden;
}

.panel-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: linear-gradient(90deg, var(--text-muted) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Metrics ───────────────────────────────────────────────────────────── */
.metric-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.metric-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  border: 1.5px solid var(--border-medium);
  transition: all var(--transition-mid);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.metric-card:hover {
  border-color: rgba(0, 217, 255, 0.4);
  background: rgba(0, 217, 255, 0.08);
  transform: translateY(-2px);
}

.metric-card:hover::before {
  opacity: 1;
}

.metric-card .val {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan) 0%, var(--green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  letter-spacing: -0.02em;
}

.metric-card .lbl {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.metric-pos {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-tertiary);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-medium);
}

.metric-pos span {
  color: var(--cyan);
  font-weight: 700;
}

/* ── Percepts ──────────────────────────────────────────────────────────── */
.percept-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.ptag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 11px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  border: 1.5px solid transparent;
  backdrop-filter: blur(10px);
  transition: all var(--transition-fast);
  letter-spacing: 0.03em;
}

.ptag:hover {
  transform: translateY(-2px);
}

.ptag-none {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 400;
}

.ptag-breeze {
  background: rgba(0, 217, 255, 0.15);
  color: #60d9ff;
  border-color: rgba(0, 217, 255, 0.35);
  box-shadow: 0 0 12px rgba(0, 217, 255, 0.15);
}

.ptag-breeze:hover {
  box-shadow: 0 0 16px rgba(0, 217, 255, 0.25);
  border-color: rgba(0, 217, 255, 0.5);
}

.ptag-stench {
  background: rgba(178, 75, 255, 0.15);
  color: #d9a7ff;
  border-color: rgba(178, 75, 255, 0.35);
  box-shadow: 0 0 12px rgba(178, 75, 255, 0.15);
}

.ptag-stench:hover {
  box-shadow: 0 0 16px rgba(178, 75, 255, 0.25);
  border-color: rgba(178, 75, 255, 0.5);
}

.ptag-glitter {
  background: rgba(255, 215, 0, 0.15);
  color: #ffd740;
  border-color: rgba(255, 215, 0, 0.35);
  box-shadow: 0 0 12px rgba(255, 215, 0, 0.15);
}

.ptag-glitter:hover {
  box-shadow: 0 0 16px rgba(255, 215, 0, 0.25);
  border-color: rgba(255, 215, 0, 0.5);
}

/* ── KB Display ────────────────────────────────────────────────────────── */
#kb-display {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  max-height: 160px;
  overflow-y: auto;
  line-height: 1.8;
  background: var(--bg-secondary);
  padding: 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-medium);
  backdrop-filter: blur(10px);
}

#kb-display div {
  border-bottom: 1px solid var(--border-light);
  padding: 3px 0;
  transition: all var(--transition-fast);
}

#kb-display div:hover {
  color: var(--cyan);
  padding-left: 4px;
}

#kb-display div:last-child {
  border: none;
}

/* ── Log ───────────────────────────────────────────────────────────────── */
#log {
  font-family: var(--font-mono);
  font-size: 11px;
  max-height: 100%;
  overflow-y: auto;
  line-height: 1.85;
  background: var(--bg-secondary);
  padding: 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-medium);
  backdrop-filter: blur(10px);
  flex: 1;
}

.log-entry {
  padding: 2px 0;
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-fast);
  padding-left: 2px;
}

.log-entry:hover {
  padding-left: 6px;
}

.log-entry:last-child {
  border: none;
}

.log-infer { color: var(--green); }
.log-move { color: var(--cyan); }
.log-warn { color: var(--orange); }
.log-dead { color: var(--red); font-weight: 700; }
.log-win { color: var(--gold); font-weight: 700; }
.log-info { color: var(--text-muted); }

/* ── Status Banner ─────────────────────────────────────────────────────── */
#status-banner {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  z-index: 100;
  padding: 36px 48px;
  border-radius: var(--radius-xl);
  text-align: center;
  background: var(--bg-surface);
  border: 2px solid var(--border-medium);
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.7), 0 0 40px rgba(0, 217, 255, 0.1);
  min-width: 320px;
  backdrop-filter: blur(20px);
  animation: bannerSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes bannerSlideIn {
  from {
    transform: translate(-50%, -50%) scale(0.9);
    opacity: 0;
  }
  to {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
}

#status-banner.win {
  border-color: var(--gold);
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.7), 0 0 40px rgba(255, 215, 0, 0.2);
}

#status-banner.lose {
  border-color: var(--red);
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.7), 0 0 40px rgba(255, 23, 68, 0.2);
}

#status-banner h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#status-banner.win h2 {
  background: linear-gradient(135deg, var(--gold) 0%, var(--orange) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#status-banner.lose h2 {
  background: linear-gradient(135deg, var(--red) 0%, var(--orange) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#status-banner p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-weight: 500;
}

#overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 99;
  animation: overlayFadeIn 0.3s ease;
}

@keyframes overlayFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ── Scrollbars ────────────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 217, 255, 0.2);
  border-radius: 3px;
  transition: background 0.2s;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 217, 255, 0.4);
}

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .cell {
    width: 78px;
    height: 78px;
  }
  .cell-icon {
    font-size: 28px;
  }
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr;
  }
  .sidebar {
    border-left: none;
    border-top: 1px solid var(--border-light);
    max-height: 400px;
  }
}

@media (max-width: 700px) {
  header {
    flex-direction: column;
    gap: 12px;
  }
  .cell {
    width: 70px;
    height: 70px;
  }
  .cell-icon {
    font-size: 24px;
  }
  .controls {
    flex-direction: column;
    align-items: stretch;
  }
  .ctrl-group {
    justify-content: space-between;
  }
}