/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #080c10;
  --bg2:       #0d1117;
  --bg3:       #111820;
  --border:    #1a2535;
  --accent:    #00e5ff;
  --accent2:   #0077ff;
  --on:        #00e5ff;
  --off:       #2a3a4a;
  --text:      #c8d8e8;
  --muted:     #4a6070;
  --danger:    #ff4060;
  --success:   #00e5ff;
  --card-w:    calc(50% - 8px);
}

body.light {
  --bg:        #eef2f7;
  --bg2:       #ffffff;
  --bg3:       #dde5ef;
  --border:    #c0cedd;
  --accent:    #0077ff;
  --accent2:   #0055cc;
  --on:        #0077ff;
  --off:       #b0bec5;
  --text:      #1a2535;
  --muted:     #7090a0;
  --danger:    #e0203a;
  --success:   #0077ff;
}

body {
  font-family: 'Share Tech Mono', monospace;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.4s, color 0.4s;
}

/* ===== BACKGROUND EFFECTS ===== */
.grid-bg {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
}

.scanline {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0.15;
  animation: scan 4s linear infinite;
  pointer-events: none;
  z-index: 999;
}

@keyframes scan {
  0%   { top: 0; }
  100% { top: 100vh; }
}

/* ===== APP LAYOUT ===== */
.app {
  position: relative;
  z-index: 1;
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== HEADER ===== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border: 2px solid var(--accent);
  border-radius: 6px;
  position: relative;
  animation: pulse-border 2s ease-in-out infinite;
}

.logo-mark::after {
  content: '';
  position: absolute;
  inset: 4px;
  background: var(--accent);
  border-radius: 2px;
  opacity: 0.4;
}

@keyframes pulse-border {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,229,255,0.3); }
  50%       { box-shadow: 0 0 0 6px rgba(0,229,255,0); }
}

.title {
  font-family: 'Orbitron', sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text);
  line-height: 1;
}

.title span { color: var(--accent); }

.subtitle {
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--muted);
  margin-top: 3px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg3);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--muted);
  transition: background 0.3s;
}

.status-indicator.online .dot {
  background: var(--accent);
  animation: blink 1.5s ease-in-out infinite;
}

.status-indicator.error .dot { background: var(--danger); }

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

.status-text {
  font-size: 9px;
  letter-spacing: 1.5px;
  color: var(--muted);
}

.status-indicator.online .status-text { color: var(--accent); }
.status-indicator.error  .status-text { color: var(--danger); }

.settings-btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--muted);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, border-color 0.2s;
}

.settings-btn:hover { color: var(--accent); border-color: var(--accent); }

.settings-panel {
  position: absolute;
  top: 44px;
  right: 0;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  min-width: 180px;
  display: none;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  z-index: 200;
}

.settings-panel.open { display: block; }

.settings-item {
  padding: 11px 16px;
  font-size: 11px;
  letter-spacing: 1px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.settings-item:hover { background: var(--bg3); color: var(--accent); }

.settings-divider {
  height: 1px;
  background: var(--border);
}

/* ===== MAIN ===== */
.main {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ===== STAT BAR ===== */
.stat-bar {
  display: flex;
  align-items: center;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 20px;
  gap: 0;
}

.stat {
  flex: 1;
  text-align: center;
}

.stat-label {
  display: block;
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--muted);
  margin-bottom: 4px;
}

.stat-value {
  display: block;
  font-family: 'Orbitron', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}

.stat-divider {
  width: 1px;
  height: 32px;
  background: var(--border);
}

/* ===== RELAY GRID ===== */
.relay-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== RELAY CARD ===== */
.relay-card {
  width: var(--card-w);
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  cursor: pointer;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.1s;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.relay-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.3s;
}

.relay-card.active {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(0,229,255,0.15), inset 0 0 20px rgba(0,229,255,0.04);
}

.relay-card.active::before { transform: scaleX(1); }

.relay-card:active { transform: scale(0.97); }

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.relay-num {
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--muted);
}

.relay-badge {
  font-size: 9px;
  letter-spacing: 2px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--off);
  color: var(--muted);
  transition: background 0.3s, color 0.3s;
}

.relay-card.active .relay-badge {
  background: var(--accent);
  color: var(--bg);
}

.card-icon {
  font-size: 28px;
  text-align: center;
  margin: 6px 0;
  filter: grayscale(1);
  opacity: 0.4;
  transition: filter 0.3s, opacity 0.3s;
}

.relay-card.active .card-icon {
  filter: grayscale(0);
  opacity: 1;
}

.card-label {
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--text);
  text-align: center;
  margin-bottom: 12px;
}

.card-footer {
  display: flex;
  justify-content: center;
}

/* ===== TOGGLE ===== */
.toggle-track {
  width: 44px;
  height: 24px;
  background: var(--off);
  border-radius: 12px;
  position: relative;
  transition: background 0.3s;
  pointer-events: none;
}

.relay-card.active .toggle-track { background: var(--accent); }

.toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg);
  transition: transform 0.3s;
}

.relay-card.active .toggle-thumb { transform: translateX(20px); }

/* ===== BULK ACTIONS ===== */
.bulk-actions {
  display: flex;
  gap: 12px;
}

.bulk-btn {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  font-family: 'Orbitron', sans-serif;
  font-size: 11px;
  letter-spacing: 2px;
  cursor: pointer;
  border: 1px solid;
  transition: background 0.2s, color 0.2s, transform 0.1s;
}

.bulk-btn:active { transform: scale(0.97); }

.bulk-btn.off {
  background: var(--bg2);
  border-color: var(--border);
  color: var(--muted);
}

.bulk-btn.off:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.bulk-btn.on {
  background: var(--bg2);
  border-color: var(--border);
  color: var(--muted);
}

.bulk-btn.on:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== FOOTER ===== */
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--muted);
}

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg2);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 11px;
  letter-spacing: 1px;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  z-index: 999;
  white-space: nowrap;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}