/* ═══ Batteriespeicher Page Styles ═══ */

/* ── Hero Section ── */
.batteriespeicher-hero {
  min-height: clamp(640px, 88vh, 780px);
  padding-bottom: clamp(3rem, 5vw, 5rem);
  background: radial-gradient(circle at 80% 30%, rgba(215, 144, 43, 0.05), transparent 45%), var(--color-bg);
}

.batteriespeicher-hero .page-hero__title {
  max-width: 15ch;
  font-size: clamp(2.6rem, 5.5vw, 5.2rem);
  line-height: 0.95;
}

.batteriespeicher-hero__media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-soft);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  padding: clamp(1rem, 2.5vw, 2.5rem);
  min-height: clamp(340px, 42vw, 520px);
}

#hero-storage-svg {
  width: 100%;
  height: auto;
  max-height: 430px;
  display: block;
}

/* ── Key Modularity Section ── */
.modular-info {
  background: linear-gradient(180deg, var(--color-bg-soft) 0%, var(--color-bg-warm) 100%);
  position: relative;
}

.modular-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.modular-text__title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 1.2rem;
}

.modular-text__desc {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.75;
  max-width: 60ch;
}

.modular-highlights {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}

.modular-highlight-item {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.modular-highlight-item__icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.8rem;
  height: 2.8rem;
  border-radius: 12px;
  background: rgba(215, 144, 43, 0.1);
  color: var(--color-primary-dark);
}

.modular-highlight-item h4 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.3rem;
}

.modular-highlight-item p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* ── Interactive Stacking Configurator Section ── */
.configurator-section {
  background: var(--color-bg-soft);
  padding-top: clamp(4rem, 6vw, 6rem);
  padding-bottom: clamp(4rem, 6vw, 6rem);
}

.configurator-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

/* Left Column: Interactive Visual Stack Simulator */
.configurator-visualizer-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
}

.configurator-title-mobile {
  display: none;
}

.visualizer-card {
  position: relative;
  background: radial-gradient(circle at 50% 50%, #ffffff 0%, #f6f4ee 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-strong);
  box-shadow: var(--shadow-md);
  padding: 2.5rem 1.5rem;
  min-height: 480px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  overflow: hidden;
}

/* The Room Simulation Grid Background */
.room-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: 30px 30px;
  background-image: 
    linear-gradient(to right, rgba(16, 26, 34, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(16, 26, 34, 0.025) 1px, transparent 1px);
  pointer-events: none;
}

/* Ceiling and floor elements */
.room-ceiling {
  position: absolute;
  top: 60px; /* Dynamic value updated via JS */
  left: 0;
  width: 100%;
  border-top: 3px dashed var(--color-danger);
  padding-top: 6px;
  padding-left: 1.5rem;
  color: var(--color-danger);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  z-index: 10;
  transition: top var(--transition-smooth);
}

.room-ceiling::after {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 100%;
  height: 12px;
  background: repeating-linear-gradient(
    45deg,
    rgba(182, 70, 50, 0.1),
    rgba(182, 70, 50, 0.1) 8px,
    transparent 8px,
    transparent 16px
  );
}

.room-floor {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 25px;
  background: var(--color-bg-warm);
  border-top: 1px solid var(--color-border-strong);
  z-index: 2;
}

/* Vertical Height Ruler Scale */
.ruler-scale {
  position: absolute;
  left: 2rem;
  bottom: 25px;
  height: calc(100% - 100px);
  width: 45px;
  border-right: 1.5px solid var(--color-text-muted);
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-start;
  pointer-events: none;
  z-index: 5;
  opacity: 0.85;
}

.ruler-tick {
  position: absolute;
  right: 0;
  width: 10px;
  height: 1px;
  background: var(--color-text-muted);
}

.ruler-tick.major {
  width: 18px;
  height: 1.5px;
}

.ruler-label {
  position: absolute;
  right: 24px;
  transform: translateY(50%);
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* The Battery Stack Tower representation */
.battery-tower-wrapper {
  position: relative;
  width: 170px;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 5;
  margin-bottom: 0px; /* rests on floor */
  transition: transform var(--transition-smooth);
}

.battery-base {
  width: 150px;
  height: 24px; /* base is 15cm equiv scaled */
  background: linear-gradient(90deg, #efefeb 0%, #ffffff 52%, #e4e4df 100%);
  border-radius: 3px 3px 2px 2px;
  border: 1px solid #d3d4d0;
  box-shadow: 0 8px 18px rgba(16, 26, 34, 0.16);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
}

.battery-base__led {
  width: 108px;
  height: 3px;
  border-radius: 999px;
  background: rgba(16, 26, 34, 0.2);
  box-shadow: none;
}

.battery-module-stack {
  display: flex;
  flex-direction: column;
  width: 138px;
  z-index: 6;
}

.battery-module {
  position: relative;
  width: 138px;
  height: 38px; /* each module is 24cm equiv scaled */
  background: linear-gradient(90deg, #ffffff 0%, #fafaf8 52%, #eeeeea 100%);
  border: 1px solid #d7d8d4;
  border-bottom-color: #d0d1cd;
  border-radius: 2px;
  margin-bottom: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  box-shadow: inset 8px 0 0 rgba(232, 232, 228, 0.82), inset -8px 0 0 rgba(219, 220, 216, 0.65);
  transform: scaleY(0);
  opacity: 0;
  transform-origin: bottom;
  animation: module-enter 0.5s var(--ease-out-expo) forwards;
}

.battery-module::before,
.battery-module::after {
  content: "";
  position: absolute;
  top: 5px;
  bottom: 5px;
  width: 1px;
  background: #d7d8d4;
}

.battery-module::before {
  left: 17px;
}

.battery-module::after {
  right: 17px;
}

@keyframes module-enter {
  to {
    transform: scaleY(1);
    opacity: 1;
  }
}

.battery-head {
  width: 138px;
  height: 28px; /* head controller is 20cm equiv */
  background: linear-gradient(90deg, #ffffff 0%, #fafaf8 52%, #eeeeea 100%);
  border-radius: 4px 4px 2px 2px;
  border: 1px solid #d7d8d4;
  border-bottom-color: #d0d1cd;
  box-shadow: inset 8px 0 0 rgba(232, 232, 228, 0.82), inset -8px 0 0 rgba(219, 220, 216, 0.65);
  z-index: 7;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-smooth);
}

.battery-head__display {
  width: 20px;
  height: 20px;
  background: radial-gradient(circle at center, #66d46f 0%, #18361f 43%, #151718 100%);
  border-radius: 50%;
  border: 2px solid #2c3030;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 1px rgba(155, 159, 157, 0.55), 0 3px 8px rgba(16, 26, 34, 0.14);
}

.battery-head__status-light {
  width: 4px;
  height: 4px;
  background-color: #f8fff9;
  border-radius: 50%;
  box-shadow: 0 0 5px rgba(102, 212, 111, 0.9);
}

/* Height indicator tag overlaying the visual tower */
.tower-height-tag {
  position: absolute;
  right: -80px;
  top: 0;
  background: var(--color-secondary);
  color: #ffffff;
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  white-space: nowrap;
  box-shadow: var(--shadow-soft);
  z-index: 10;
  transition: top var(--transition-smooth);
}

.tower-height-tag::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 50%;
  transform: translateY(-50%);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-right: 6px solid var(--color-secondary);
}

/* Vertical Safety Clearance area representation */
.safety-clearance-box {
  position: absolute;
  width: 138px;
  background: rgba(215, 144, 43, 0.08);
  border: 1px dashed rgba(215, 144, 43, 0.4);
  bottom: calc(25px + 24px + 38px * var(--module-count, 2) + 28px); /* dynamic */
  height: 48px; /* 30cm clearance equivalent */
  z-index: 3;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  opacity: 0.8;
  transition: bottom var(--transition-smooth), border-color var(--transition-fast), background var(--transition-fast);
}

.safety-clearance-box.violated {
  background: rgba(182, 70, 50, 0.12);
  border-color: rgba(182, 70, 50, 0.6);
  color: var(--color-danger);
}

/* Clearance Warning Box overlays */
.clearance-alert-banner {
  width: 100%;
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  font-size: 0.9rem;
  line-height: 1.5;
  margin-top: 1rem;
  transition: all var(--transition-fast);
}

.clearance-alert-banner.ok {
  background: rgba(31, 143, 90, 0.08);
  border: 1px solid rgba(31, 143, 90, 0.2);
  color: var(--color-success);
}

.clearance-alert-banner.warning {
  background: rgba(215, 144, 43, 0.09);
  border: 1px solid rgba(215, 144, 43, 0.25);
  color: var(--color-primary-dark);
}

.clearance-alert-banner.danger {
  background: rgba(182, 70, 50, 0.09);
  border: 1px solid rgba(182, 70, 50, 0.25);
  color: var(--color-danger);
}

.clearance-alert-banner svg {
  flex-shrink: 0;
  margin-top: 0.15rem;
  width: 1.15rem;
  height: 1.15rem;
}

/* Right Column: Controls & Dynamic Stats Dashboard */
.configurator-controls-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

.control-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-soft);
}

.control-card__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.control-card__badge {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background: var(--color-bg);
  color: var(--color-text-muted);
}

.space-selection-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
}

.btn-space-option {
  padding: 0.8rem 0.5rem;
  border-radius: var(--radius-xs);
  border: 1.5px solid var(--color-border);
  background: var(--color-bg-soft);
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.btn-space-option:hover {
  border-color: rgba(16, 26, 34, 0.25);
  background: var(--color-bg-accent);
}

.btn-space-option.active {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: #ffffff;
}

.btn-space-option.active.space-low {
  background: var(--color-danger);
  border-color: var(--color-danger);
}

/* Module Slider Counter Selector styling */
.module-selector-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.module-adjuster {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.btn-adjust {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 1.25rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-soft);
}

.btn-adjust:hover:not(:disabled) {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: #ffffff;
}

.btn-adjust:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.module-slider-container {
  flex-grow: 1;
}

.module-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  outline: none;
  background: var(--color-bg-warm);
  -webkit-appearance: none;
  appearance: none;
}

.module-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: 2px solid var(--color-surface);
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
  transition: transform var(--transition-fast);
}

.module-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* Configurator Stats Dashboard grid */
.dashboard-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
}

.dashboard-stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.15rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  box-shadow: var(--shadow-soft);
}

.dashboard-stat-card.featured {
  grid-column: span 2;
  background: linear-gradient(135deg, #101a22 0%, #1c2730 100%);
  border-color: rgba(255,255,255,0.06);
  color: #ffffff;
}

.dashboard-stat-card__label {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.dashboard-stat-card.featured .dashboard-stat-card__label {
  color: rgba(255,255,255,0.55);
}

.dashboard-stat-card__value {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.dashboard-stat-card.featured .dashboard-stat-card__value {
  font-size: 1.9rem;
  color: var(--color-primary);
}

.dashboard-stat-card__meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.dashboard-stat-card.featured .dashboard-stat-card__meta {
  color: rgba(255,255,255,0.65);
}

/* Blackout appliances grid indicator status */
.appliance-status-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-soft);
}

.appliance-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-top: 0.85rem;
}

.appliance-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 0.4rem;
  border-radius: var(--radius-sm);
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all var(--transition-fast);
}

.appliance-item__icon {
  width: 2rem;
  height: 2rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.appliance-item__label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.appliance-item.active {
  background: rgba(31, 143, 90, 0.06);
  border-color: rgba(31, 143, 90, 0.25);
}

.appliance-item.active .appliance-item__icon {
  color: var(--color-success);
  filter: drop-shadow(0 0 6px rgba(46, 204, 113, 0.4));
}

.appliance-item.active .appliance-item__label {
  color: var(--color-text);
  font-weight: 700;
}

/* ── Modularity clearance comparisons ── */
.comparison-section {
  padding-top: clamp(4rem, 6vw, 6rem);
  padding-bottom: clamp(4rem, 6vw, 6rem);
}

.clearance-comp-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.clearance-comp-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.clearance-comp-card--bad {
  border-top: 5px solid var(--color-danger);
}

.clearance-comp-card--good {
  border-top: 5px solid var(--color-success);
}

.clearance-comp-card__header {
  padding: 1.5rem 1.5rem 0.5rem 1.5rem;
}

.clearance-comp-card__header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.clearance-comp-card--bad h3 {
  color: var(--color-danger);
}

.clearance-comp-card--good h3 {
  color: var(--color-success);
}

.clearance-comp-card__header p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.clearance-comp-card__visual {
  padding: 1.5rem;
  background: #fbfbf9;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 240px;
}

.clearance-comp-card__body {
  padding: 1.5rem;
  flex-grow: 1;
}

.clearance-comp-card__list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.clearance-comp-card__list li {
  position: relative;
  padding-left: 1.45rem;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.clearance-comp-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.25rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.clearance-comp-card--bad .clearance-comp-card__list li::before {
  content: "✕";
  color: #ffffff;
  background-color: var(--color-danger);
  font-size: 0.5rem;
  font-weight: 900;
}

.clearance-comp-card--good .clearance-comp-card__list li::before {
  content: "✓";
  color: #ffffff;
  background-color: var(--color-success);
  font-size: 0.55rem;
  font-weight: 900;
}

/* ═══ RESPONSIVE BREAKPOINTS ═══ */
@media (min-width: 760px) {
  .modular-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(2rem, 4vw, 4rem);
  }

  .clearance-comp-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .configurator-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(2rem, 3.5vw, 4.5rem);
  }

  .visualizer-card {
    min-height: 520px;
    padding: 3rem 2rem;
  }

  .room-ceiling {
    font-size: 0.76rem;
  }
}

@media (max-width: 979px) {
  .batteriespeicher-hero {
    min-height: 0;
  }
  
  .batteriespeicher-hero__media {
    min-height: 320px;
  }

  .configurator-title-desktop {
    display: none;
  }

  .configurator-title-mobile {
    display: block;
    margin-bottom: 0.5rem;
  }
}

@media (max-width: 640px) {
  .space-selection-buttons {
    grid-template-columns: 1fr;
  }

  .appliance-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .dashboard-stats-grid {
    grid-template-columns: 1fr;
  }

  .dashboard-stat-card.featured {
    grid-column: span 1;
  }

  .visualizer-card {
    min-height: 440px;
  }

  .ruler-scale {
    left: 1rem;
  }

  .tower-height-tag {
    right: auto;
    left: 50%;
    transform: translateX(-50%);
    top: auto;
    bottom: calc(25px + 24px + 38px * var(--module-count, 2) + 40px);
  }

  .tower-height-tag::before {
    display: none;
  }
}

/* ── Towers rendered to scale by JS (max. 3 modules per tower) ── */
.visualizer-card { padding-bottom: 25px; }
.ruler-scale { top: 0; height: auto; }

.battery-towers {
  position: absolute;
  left: 5.5rem;
  right: 1rem;
  bottom: 25px;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 18px;
  z-index: 5;
}

.battery-towers .battery-tower-wrapper { width: 138px; }
.battery-towers.is-split .battery-tower-wrapper { width: 112px; }
.battery-towers .battery-head,
.battery-towers .battery-module-stack,
.battery-towers .battery-module { width: 100%; }

.battery-towers .safety-clearance-box {
  position: absolute;
  left: 0;
  bottom: 100%;
  width: 100%;
  text-align: center;
}

.battery-towers .tower-height-tag {
  top: auto;
  right: auto;
  left: 50%;
  bottom: calc(100% + 6px);
  transform: translateX(-50%);
}
.battery-towers .tower-height-tag::before { display: none; }

@media (max-width: 640px) {
  .ruler-scale { left: 1.9rem; }
  .battery-towers { left: 5rem; right: 0.5rem; gap: 12px; }
  .battery-towers.is-split .battery-tower-wrapper { width: 92px; }
}