/* ====================================
   LED WALL CALCULATOR - MAIN STYLES
   ==================================== */

.led-wall-calculator {
  --color-bg: #f8f9fa;
  --color-text: #1a1a1a;
  --color-text-muted: #666;
  --color-border: #ddd;
  --color-card-bg: #fff;
  --color-accent: #e7133d;
  --color-accent-hover: #c20a30;
  --color-grid-bg: #f0f2f5;

  margin: 0;
  padding: 0;
  width: 100%;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu',
    'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

.led-wall-calculator__container {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* HEADER */
.led-wall-calculator__header {
  background: var(--color-card-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 24px;
  flex-shrink: 0;
}

.led-wall-calculator__header-content {
  max-width: 1400px;
  margin: 0 auto;
}

.led-wall-calculator__title {
  margin: 0 0 8px 0;
  font-size: 28px;
  font-weight: 600;
  color: var(--color-text);
}

.led-wall-calculator__description {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-muted);
}

/* FORM */
.led-wall-calculator__form {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.led-wall-calculator__main {
  display: flex;
  flex-direction: column;
  gap: 24px;
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 100%;
  width: 100%;
  margin: 0 auto;
}

/* CONTROLS PANEL (TOP) */
.led-wall-calculator__controls-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  flex-shrink: 0;
}

/* CARD STYLES */
.led-wall-calculator__card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.led-wall-calculator__card-title {
  margin: 0 0 12px 0;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text);
}

/* FORM GROUPS */
.led-wall-calculator__form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.led-wall-calculator__form-group:last-child {
  margin-bottom: 0;
}

.led-wall-calculator__label {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text);
}

/* SELECT */
.led-wall-calculator__select {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: #fff;
  color: var(--color-text);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.2s;
}

.led-wall-calculator__select:hover {
  border-color: var(--color-accent);
}

.led-wall-calculator__select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(231, 19, 61, 0.1);
}

/* INPUT GROUP */
.led-wall-calculator__input-group {
  display: grid;
  grid-template-columns: 40px 1fr 40px;
  gap: 6px;
  align-items: center;
}

.led-wall-calculator__input-number {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: #fff;
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  transition: border-color 0.2s;
}

.led-wall-calculator__input-number:hover {
  border-color: var(--color-accent);
}

.led-wall-calculator__input-number:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(231, 19, 61, 0.1);
}

/* STEPPER BUTTONS */
.led-wall-calculator__btn-stepper {
  padding: 8px 4px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: #fff;
  color: var(--color-text);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.led-wall-calculator__btn-stepper:hover {
  background: var(--color-grid-bg);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.led-wall-calculator__btn-stepper:active {
  background: rgba(231, 19, 61, 0.1);
}

/* INPUT HINT */
.led-wall-calculator__input-hint {
  margin: 0;
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ASPECT RATIO */
.led-wall-calculator__aspect-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.led-wall-calculator__aspect-inputs {
  display: grid;
  grid-template-columns: 1fr 30px 1fr 50px;
  gap: 6px;
  align-items: center;
}

.led-wall-calculator__input-ratio {
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: #fff;
  color: var(--color-text);
  font-size: 13px;
  text-align: center;
  transition: border-color 0.2s;
}

.led-wall-calculator__input-ratio:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(231, 19, 61, 0.1);
}

.led-wall-calculator__aspect-separator {
  text-align: center;
  color: var(--color-text-muted);
  font-weight: 500;
}

.led-wall-calculator__btn-lock {
  padding: 8px 8px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: #fff;
  color: var(--color-text);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.led-wall-calculator__btn-lock:hover {
  background: var(--color-grid-bg);
  border-color: var(--color-accent);
}

.led-wall-calculator__btn-lock[aria-pressed='true'] {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

/* UNIT GROUP */
.led-wall-calculator__unit-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.led-wall-calculator__btn-unit {
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: #fff;
  color: var(--color-text);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.led-wall-calculator__btn-unit:hover {
  border-color: var(--color-accent);
  background: rgba(231, 19, 61, 0.05);
}

.led-wall-calculator__btn-unit.active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

/* VISUAL PANEL (CENTER) */
.led-wall-calculator__visual-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--color-grid-bg);
  border-radius: 8px;
  padding: 16px;
  overflow: hidden;
  flex: 1;
  height: calc(100vh - 300px);
  position: relative;
}

.led-wall-calculator__grid-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 6px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  z-index: 10;
}

.led-wall-calculator__grid-wrapper {
  flex: 1;
  position: relative;
  background: #fff;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  margin-top: 24px;
  width: 100%;
  min-width: 100%;
}

.led-wall-calculator__grid-panels {
  position: relative;
  display: inline-grid;
  gap: 0;
  grid-template-columns: repeat(var(--grid-cols, 1), var(--panel-width));
  grid-template-rows: repeat(var(--grid-rows, 1), var(--panel-height));
  transform-origin: center center;
  transition: transform 0.2s ease-out;
}

.led-wall-calculator__grid-scale {
  position: absolute;
  bottom: 24px;
  left: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 6px;
  padding: 12px;
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  z-index: 5;
}

.led-wall-calculator__btn-zoom {
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: #fff;
  color: var(--color-text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-width: 34px;
  text-align: center;
}

.led-wall-calculator__btn-zoom:hover {
  background: var(--color-grid-bg);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.led-wall-calculator__btn-zoom:active {
  background: rgba(231, 19, 61, 0.1);
}

.led-wall-calculator__zoom-level {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text);
  min-width: 50px;
  text-align: center;
}

.led-wall-calculator__btn-zoom-fit {
  padding: 6px 12px;
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  background: var(--color-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.led-wall-calculator__btn-zoom-fit:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.led-wall-calculator__btn-zoom-fit:active {
  opacity: 0.9;
}

.led-wall-calculator__grid-person {
  width: 48px;
  height: 120px;
}

.led-wall-calculator__grid-person svg {
  width: 100%;
  height: 100%;
  fill: var(--color-text-muted);
}

.led-wall-calculator__scale-label {
  margin: 0;
  font-size: 11px;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* GRID INFO */
.led-wall-calculator__grid-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.led-wall-calculator__info-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 8px 12px;
  text-align: center;
}

.led-wall-calculator__info-label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 4px;
}

.led-wall-calculator__info-value {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-accent);
}

/* RESULTS PANEL (BOTTOM) */
.led-wall-calculator__results-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  flex-shrink: 0;
}

.led-wall-calculator__results-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.led-wall-calculator__results-list li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--color-border);
  align-items: center;
}

.led-wall-calculator__results-list li:last-child {
  border-bottom: none;
}

.led-wall-calculator__results-list span {
  font-size: 12px;
  color: var(--color-text-muted);
}

.led-wall-calculator__results-list strong {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  text-align: right;
}

/* PANEL STYLES */
.led-wall-calculator__grid-panels .panel {
  background: rgba(231, 19, 61, 0.1);
  border: 1px solid var(--color-accent);
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  font-size: 10px;
  color: var(--color-text-muted);
  font-weight: 500;
  min-width: 20px;
  min-height: 20px;
}

.led-wall-calculator__grid-panels .panel:hover {
  background: rgba(231, 19, 61, 0.15);
}

/* RESPONSIVE */
@media (max-width: 1200px) {
  .led-wall-calculator__main {
    grid-template-columns: 280px 1fr 280px;
    gap: 16px;
    padding: 16px;
  }
}

@media (max-width: 992px) {
  .led-wall-calculator__main {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .led-wall-calculator__controls-panel,
  .led-wall-calculator__results-panel {
    max-height: 200px;
  }

  .led-wall-calculator__visual-panel {
    order: -1;
    max-height: calc(100vh - 300px);
  }
}

@media (max-width: 768px) {
  .led-wall-calculator__header {
    padding: 16px;
  }

  .led-wall-calculator__title {
    font-size: 20px;
  }

  .led-wall-calculator__description {
    font-size: 12px;
  }

  .led-wall-calculator__main {
    padding: 12px;
    gap: 12px;
  }
}