:root {
  --v4-bg: #02040A;
  --v4-surface: rgba(0, 20, 40, 0.35);
  --v4-surface-2: rgba(0, 30, 60, 0.5);
  --v4-border: rgba(0, 229, 255, 0.25);
  --v4-border-hover: rgba(0, 229, 255, 0.55);
  --v4-text: #E6F7FF;
  --v4-text-secondary: rgba(230, 247, 255, 0.6);
  --v4-cyan: #00E5FF;
  --v4-green: #00FF9C;
  --v4-amber: #FFB300;
  --v4-red: #FF3B5C;
  --v4-mono: 'Consolas', 'JetBrains Mono', 'Courier New', monospace;
  --v4-sans: 'Segoe UI', system-ui, -apple-system, Arial, sans-serif;
  --v4-radius: 10px;
  --v4-glow-cyan: 0 0 12px rgba(0, 229, 255, 0.35);
  --v4-glow-green: 0 0 12px rgba(0, 255, 156, 0.35);
  --v4-glow-amber: 0 0 12px rgba(255, 179, 0, 0.35);
  --v4-glow-red: 0 0 12px rgba(255, 59, 92, 0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--v4-sans);
  background: var(--v4-bg);
  color: var(--v4-text);
  min-height: 100vh;
}

/* ===== Sternenfeld ===== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,0.4) 50%, transparent 50%),
    radial-gradient(1px 1px at 70% 15%, rgba(255,255,255,0.3) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 40% 70%, rgba(255,255,255,0.25) 50%, transparent 50%),
    radial-gradient(1px 1px at 85% 60%, rgba(255,255,255,0.35) 50%, transparent 50%),
    radial-gradient(1px 1px at 10% 80%, rgba(255,255,255,0.3) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 55% 40%, rgba(255,255,255,0.2) 50%, transparent 50%),
    radial-gradient(1px 1px at 90% 90%, rgba(255,255,255,0.3) 50%, transparent 50%),
    radial-gradient(1px 1px at 30% 10%, rgba(255,255,255,0.4) 50%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ===== Scanlines ===== */
.v4-scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.12) 0px,
    rgba(0, 0, 0, 0.12) 1px,
    transparent 1px,
    transparent 3px
  );
  opacity: 0;
  transition: opacity 0.3s ease;
}
.v4-scanlines.v4-scanlines--on { opacity: 1; }

/* ===== Boot-Sequence ===== */
.v4-boot {
  position: fixed;
  inset: 0;
  background: var(--v4-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.6s ease;
}
.v4-boot.v4-boot--hidden { opacity: 0; pointer-events: none; }
.v4-boot-inner {
  width: 420px;
  max-width: 90vw;
  border: 1px solid var(--v4-border);
  border-radius: var(--v4-radius);
  padding: 24px;
  background: var(--v4-surface);
  box-shadow: var(--v4-glow-cyan);
}
.v4-boot-logo {
  text-align: center;
  font-family: var(--v4-mono);
  font-size: 1.1rem;
  color: var(--v4-cyan);
  text-shadow: var(--v4-glow-cyan);
  margin-bottom: 20px;
  letter-spacing: 2px;
}
.v4-boot-line {
  display: flex;
  justify-content: space-between;
  font-family: var(--v4-mono);
  font-size: 0.85rem;
  color: var(--v4-text-secondary);
  padding: 4px 0;
}
.v4-boot-status { color: var(--v4-amber); }
.v4-boot-status.v4-boot-ok { color: var(--v4-green); }
.v4-boot-bar {
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 3px;
  margin-top: 16px;
  overflow: hidden;
}
.v4-boot-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--v4-cyan), var(--v4-green));
  box-shadow: var(--v4-glow-cyan);
  transition: width 0.3s ease;
}
.v4-boot-done {
  text-align: center;
  font-family: var(--v4-mono);
  font-size: 1rem;
  color: var(--v4-green);
  text-shadow: var(--v4-glow-green);
  margin-top: 16px;
  letter-spacing: 3px;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.v4-boot-done.v4-boot-done--show { opacity: 1; }

/* ===== Seite ===== */
.v4-page {
  position: relative;
  z-index: 1;
  max-width: 1500px;
  margin: 0 auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ===== Header ===== */
.v4-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px 16px;
  background: var(--v4-surface);
  border: 1px solid var(--v4-border);
  border-radius: var(--v4-radius);
  box-shadow: var(--v4-glow-cyan);
}
.v4-header-logo {
  font-family: var(--v4-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--v4-cyan);
  text-shadow: var(--v4-glow-cyan);
  letter-spacing: 2px;
}
.v4-header-clock { display: flex; align-items: baseline; gap: 10px; }
.v4-clock-time {
  font-family: var(--v4-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--v4-cyan);
  text-shadow: var(--v4-glow-cyan);
  font-variant-numeric: tabular-nums;
}
.v4-clock-date { font-size: 0.85rem; color: var(--v4-text-secondary); }
.v4-header-sun { display: flex; gap: 12px; }
.v4-sun-item {
  font-family: var(--v4-mono);
  font-size: 0.9rem;
  color: var(--v4-amber);
  text-shadow: var(--v4-glow-amber);
}
.v4-header-status { display: flex; align-items: center; gap: 8px; }
.v4-status-orb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--v4-red);
  box-shadow: var(--v4-glow-red);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.v4-status-orb.v4-status-orb--on {
  background: var(--v4-green);
  box-shadow: var(--v4-glow-green);
  animation: v4-pulse 2s ease-in-out infinite;
}
.v4-status-text { font-size: 0.8rem; color: var(--v4-text-secondary); }

/* ===== Grid ===== */
.v4-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 12px;
  align-items: start;
}

/* ===== Zone ===== */
.v4-zone {
  background: var(--v4-surface);
  border: 1px solid var(--v4-border);
  border-radius: var(--v4-radius);
  padding: 14px;
  position: relative;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.4);
}
/* Eck-Clips (Cockpit-Look) */
.v4-zone::before,
.v4-zone::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--v4-cyan);
  opacity: 0.6;
}
.v4-zone::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.v4-zone::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.v4-zone-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--v4-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--v4-cyan);
  text-shadow: var(--v4-glow-cyan);
  letter-spacing: 2px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--v4-border);
}
.v4-zone-icon { font-size: 1.1rem; }

.v4-sub-title {
  font-family: var(--v4-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--v4-text-secondary);
  letter-spacing: 2px;
  margin: 14px 0 8px;
  text-transform: uppercase;
}

/* ===== Buttons ===== */
.v4-btn {
  appearance: none;
  border: 1px solid var(--v4-border);
  background: var(--v4-surface-2);
  color: var(--v4-text);
  border-radius: 6px;
  padding: 8px 14px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.v4-btn:hover {
  background: rgba(0, 229, 255, 0.12);
  border-color: var(--v4-border-hover);
  transform: translateY(-1px);
  box-shadow: var(--v4-glow-cyan);
}
.v4-btn:active { transform: translateY(0); }
.v4-btn--primary {
  border-color: rgba(0, 229, 255, 0.4);
  background: rgba(0, 229, 255, 0.1);
  color: var(--v4-cyan);
}
.v4-btn--on {
  border-color: rgba(0, 255, 156, 0.4);
  background: rgba(0, 255, 156, 0.1);
  color: var(--v4-green);
}
.v4-btn--off {
  border-color: rgba(255, 59, 92, 0.4);
  background: rgba(255, 59, 92, 0.1);
  color: var(--v4-red);
}
.v4-btn--big { padding: 12px 18px; font-size: 0.95rem; }
.v4-btn--icon { padding: 6px 10px; font-size: 1rem; }

/* ===== Flash-Feedback ===== */
@keyframes v4-flash-ok-anim {
  from { box-shadow: 0 0 0 2px rgba(0, 255, 156, 0.9); }
  to   { box-shadow: 0 0 0 2px rgba(0, 255, 156, 0); }
}
@keyframes v4-flash-err-anim {
  from { box-shadow: 0 0 0 2px rgba(255, 59, 92, 0.9); }
  to   { box-shadow: 0 0 0 2px rgba(255, 59, 92, 0); }
}
.v4-flash-ok { animation: v4-flash-ok-anim 0.6s ease-out; }
.v4-flash-err { animation: v4-flash-err-anim 0.6s ease-out; }

/* ===== Energie-Zone ===== */
.v4-gauge-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 10px;
}
#v4_gauge {
  width: 100%;
  max-width: 360px;
  height: auto;
  aspect-ratio: 3 / 2;
  display: block;
}
.v4-energy-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}
.v4-stat {
  background: var(--v4-surface-2);
  border: 1px solid var(--v4-border);
  border-radius: 6px;
  padding: 8px;
  text-align: center;
}
.v4-stat-label {
  display: block;
  font-size: 0.65rem;
  color: var(--v4-text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.v4-stat-value {
  font-family: var(--v4-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--v4-text);
}
.v4-chart-wrap {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--v4-border);
  border-radius: 6px;
  padding: 6px;
  margin-bottom: 10px;
  overflow: hidden;
}
#v4_power_chart,
#v4_daily_chart,
#v4_water_chart {
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  display: block;
}
.v4-water {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}
.v4-water-item {
  background: var(--v4-surface-2);
  border: 1px solid var(--v4-border);
  border-radius: 6px;
  padding: 8px;
  text-align: center;
}
.v4-water-label {
  display: block;
  font-size: 0.65rem;
  color: var(--v4-text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.v4-water-value {
  font-family: var(--v4-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--v4-cyan);
}
.v4-wemos {
  font-family: var(--v4-mono);
  font-size: 0.8rem;
  color: var(--v4-text-secondary);
  text-align: center;
  padding: 6px;
  border: 1px dashed var(--v4-border);
  border-radius: 6px;
}

/* ===== Kommando-Zone: Licht-Tiles ===== */
.v4-tiles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.v4-tile {
  background: var(--v4-surface-2);
  border: 1px solid var(--v4-border);
  border-radius: 8px;
  padding: 12px 6px;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease;
  position: relative;
  overflow: hidden;
}
.v4-tile:hover { border-color: var(--v4-border-hover); }
.v4-tile:active { transform: scale(0.96); }
.v4-tile-name {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--v4-text-secondary);
  margin-bottom: 6px;
}
.v4-tile-orb {
  display: block;
  width: 14px;
  height: 14px;
  margin: 0 auto;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.v4-tile--on {
  background: rgba(0, 255, 156, 0.12);
  border-color: rgba(0, 255, 156, 0.5);
  box-shadow: var(--v4-glow-green);
}
.v4-tile--on .v4-tile-name { color: var(--v4-green); }
.v4-tile--on .v4-tile-orb {
  background: var(--v4-green);
  box-shadow: var(--v4-glow-green);
  animation: v4-pulse 2s ease-in-out infinite;
}
/* Ripple */
.v4-tile-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(0, 229, 255, 0.3);
  transform: scale(0);
  animation: v4-ripple 0.5s ease-out;
  pointer-events: none;
}
@keyframes v4-ripple {
  to { transform: scale(3); opacity: 0; }
}

/* ===== WLED ===== */
.v4-wled { display: flex; flex-direction: column; gap: 10px; }
.v4-wled-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.v4-wled-label { font-size: 0.8rem; color: var(--v4-text-secondary); min-width: 80px; }
.v4-slider { flex: 1; min-width: 120px; accent-color: var(--v4-cyan); }
.v4-color { width: 48px; height: 36px; padding: 0; border: 1px solid var(--v4-border); border-radius: 6px; background: transparent; cursor: pointer; }

/* ===== Rolladen ===== */
.v4-rolladen { display: flex; flex-direction: column; gap: 6px; }
.v4-roll-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: var(--v4-surface-2);
  border: 1px solid var(--v4-border);
  border-radius: 6px;
  padding: 6px 10px;
}
.v4-roll-name { font-size: 0.8rem; font-weight: 600; }
.v4-roll-btns { display: flex; gap: 4px; }
.v4-roll-btns .v4-btn { padding: 4px 8px; font-size: 0.75rem; }

/* ===== Steckdosen ===== */
.v4-sockets { display: flex; flex-direction: column; gap: 6px; }
.v4-socket-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: var(--v4-surface-2);
  border: 1px solid var(--v4-border);
  border-radius: 6px;
  padding: 6px 10px;
}
.v4-socket-name { font-size: 0.8rem; font-weight: 600; }
.v4-socket-orb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  cursor: pointer;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.v4-socket-orb.v4-socket-orb--on {
  background: var(--v4-green);
  box-shadow: var(--v4-glow-green);
  animation: v4-pulse 2s ease-in-out infinite;
}

/* ===== Haus ===== */
.v4-house { display: flex; flex-direction: column; gap: 8px; }

/* ===== Funksteckdosen ===== */
.v4-funk { display: flex; flex-direction: column; gap: 6px; }
.v4-funk-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: var(--v4-surface-2);
  border: 1px solid var(--v4-border);
  border-radius: 6px;
  padding: 6px 10px;
}
.v4-funk-state {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--v4-border);
  border-radius: 6px;
  padding: 8px;
  margin-bottom: 10px;
}
.v4-funk-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
}
.v4-funk-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  background: var(--v4-surface-2);
  border: 1px solid var(--v4-border);
  border-radius: 6px;
  padding: 5px 8px;
}
.v4-funk-name { font-size: 0.75rem; font-weight: 600; color: var(--v4-text-secondary); }
.v4-funk-val {
  font-family: var(--v4-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--v4-text);
}
.v4-funk-val.v4-funk-val--on { color: var(--v4-green); text-shadow: var(--v4-glow-green); }
.v4-funk-val.v4-funk-val--off { color: var(--v4-red); text-shadow: var(--v4-glow-red); }
.v4-btn-group { display: flex; gap: 4px; flex-wrap: wrap; }
.v4-funk-row .v4-btn { padding: 4px 8px; font-size: 0.75rem; }

/* ===== Status-Zone: Heizung ===== */
.v4-heat { display: flex; flex-direction: column; gap: 6px; }
.v4-heat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 6px 12px;
  align-items: center;
  background: var(--v4-surface-2);
  border: 1px solid var(--v4-border);
  border-radius: 6px;
  padding: 8px 10px;
  transition: border-color 0.2s ease;
}
.v4-heat-row:hover { border-color: var(--v4-border-hover); }
.v4-heat-name { font-size: 0.8rem; font-weight: 600; grid-column: 1; grid-row: 1; }
.v4-heat-tempwrap {
  grid-column: 2;
  grid-row: 1;
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 6px;
}
.v4-heat-temp {
  font-family: var(--v4-mono);
  font-size: 1.1rem;
  font-weight: 700;
  text-align: right;
}
.v4-heat-temp--normal { color: var(--v4-text); }
.v4-heat-temp--warm { color: var(--v4-amber); }
.v4-heat-temp--hot { color: var(--v4-red); }
.v4-heat-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}
.v4-heat-dot--on {
  background: var(--v4-amber);
  box-shadow: var(--v4-glow-amber);
  animation: v4-pulse 1.5s ease-in-out infinite;
}
.v4-heat-bar-wrap {
  grid-column: 1 / 3;
  grid-row: 2;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}
.v4-heat-set {
  display: flex;
  align-items: center;
  gap: 4px;
}
.v4-heat-set--min { grid-column: 1; grid-row: 3; }
.v4-heat-set--max { grid-column: 2; grid-row: 3; }
.v4-heat-input { width: 46px; padding: 4px 6px; font-size: 0.8rem; }
.v4-btn--sm { padding: 4px 8px; font-size: 0.75rem; }

/* ===== Stepper (Drehschalter) ===== */
.v4-stepper {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--v4-border);
  border-radius: 999px;
  padding: 2px;
}
.v4-stepper-btn {
  appearance: none;
  border: none;
  background: var(--v4-surface-2);
  color: var(--v4-cyan);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.v4-stepper-btn:hover {
  background: rgba(0, 229, 255, 0.2);
  box-shadow: var(--v4-glow-cyan);
}
.v4-stepper-btn:active { transform: scale(0.9); }
.v4-stepper-val {
  font-family: var(--v4-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--v4-text);
  min-width: 48px;
  text-align: center;
  padding: 0 4px;
}
.v4-heat-bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  background: linear-gradient(90deg, var(--v4-cyan), var(--v4-amber), var(--v4-red));
  border-radius: 4px;
  transition: width 0.5s ease;
}
.v4-heat-band {
  position: absolute;
  top: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.15);
  border-left: 1px solid rgba(255, 255, 255, 0.3);
  border-right: 1px solid rgba(255, 255, 255, 0.3);
}

/* ===== Pool ===== */
.v4-pool { display: flex; flex-direction: column; gap: 8px; }
.v4-pool-bar {
  position: relative;
  height: 20px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--v4-border);
  border-radius: 999px;
  overflow: hidden;
}
.v4-pool-bar-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.5), var(--v4-cyan));
  border-radius: 999px;
  box-shadow: var(--v4-glow-cyan);
  transition: width 0.6s ease;
}
.v4-pool-bar-fill--done {
  background: linear-gradient(90deg, rgba(0, 255, 156, 0.5), var(--v4-green));
  box-shadow: var(--v4-glow-green);
}
.v4-pool-bar-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--v4-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--v4-text);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
  pointer-events: none;
}
.v4-pool-set { display: flex; align-items: center; gap: 8px; }
.v4-pool-set-label { font-size: 0.75rem; color: var(--v4-text-secondary); }
.v4-input {
  background: rgba(0, 0, 0, 0.3);
  color: var(--v4-text);
  border: 1px solid var(--v4-border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.9rem;
  width: 80px;
  text-align: center;
}
.v4-input:focus { outline: none; border-color: var(--v4-cyan); }

/* ===== Urlaub ===== */
.v4-urlaub {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--v4-surface-2);
  border: 1px solid var(--v4-border);
  border-radius: 6px;
  padding: 10px;
}
.v4-urlaub-indicator {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.v4-urlaub-indicator.v4-urlaub-indicator--on {
  background: var(--v4-amber);
  box-shadow: var(--v4-glow-amber);
  animation: v4-pulse 1.5s ease-in-out infinite;
}
.v4-urlaub-text {
  font-family: var(--v4-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--v4-text-secondary);
  flex: 1;
}

/* ===== Footer ===== */
.v4-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: var(--v4-surface);
  border: 1px solid var(--v4-border);
  border-radius: var(--v4-radius);
  box-shadow: var(--v4-glow-cyan);
}
.v4-footer-label {
  font-family: var(--v4-mono);
  font-size: 0.8rem;
  color: var(--v4-cyan);
  text-shadow: var(--v4-glow-cyan);
  letter-spacing: 1px;
}

/* ===== Toasts ===== */
.v4-toasts {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 10001;
}
.v4-toast {
  background: var(--v4-surface-2);
  border: 1px solid var(--v4-border);
  border-left: 3px solid var(--v4-cyan);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--v4-text);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  animation: v4-toast-in 0.3s ease;
  max-width: 300px;
}
.v4-toast--ok { border-left-color: var(--v4-green); }
.v4-toast--err { border-left-color: var(--v4-red); }
@keyframes v4-toast-in {
  from { transform: translateX(30px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}
.v4-toast.v4-toast--out { animation: v4-toast-out 0.3s ease forwards; }
@keyframes v4-toast-out {
  to { transform: translateX(30px); opacity: 0; }
}

/* ===== Animationen ===== */
@keyframes v4-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ===== Responsive ===== */
@media (max-width: 1100px) {
  .v4-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .v4-page { padding: 8px; }
  .v4-header { flex-direction: column; align-items: flex-start; }
  .v4-energy-stats { grid-template-columns: repeat(2, 1fr); }
  .v4-tiles { grid-template-columns: repeat(2, 1fr); }
  .v4-water { grid-template-columns: 1fr; }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--v4-bg); }
::-webkit-scrollbar-thumb { background: var(--v4-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--v4-border-hover); }