:root {
  --bg: #efefef;
  --panel-bg: #dcdcdc;
  --text: #222;
  --cell-size: 14px;
  --cell-gap: 1px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page {
  max-width: 1600px;
  margin: 0 auto;
  padding: 16px;
}

.header {
  margin-bottom: 16px;
}

.header h1 {
  margin: 0 0 8px;
  font-size: 2rem;
}

.header p {
  margin: 0;
  color: #555;
}

.wall-wrapper {
  display: inline-block;
  background: var(--panel-bg);
  border-radius: 10px;
  padding: 8px;
  box-shadow: var(--shadow);
  overflow-x: auto;
  max-width: 100%;
}

.wall {
  display: grid;
  grid-template-columns: repeat(8, max-content);
  gap: var(--cell-size);
  align-items: start;
  width: max-content;
}

.family-column {
  display: flex;
  flex-direction: column;
  gap: var(--cell-size);
}

.grid-section {
  padding: 0;
  margin: 0;
}

.color-grid {
  display: grid;
  grid-template-columns: repeat(7, var(--cell-size));
  grid-template-rows: repeat(7, var(--cell-size));
  gap: var(--cell-gap);
  justify-content: start;
}

.color-cell {
  width: var(--cell-size);
  height: var(--cell-size);
  border: 1px solid rgba(0, 0, 0, 0.08);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.color-cell:hover {
  transform: scale(1.15);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.12);
  position: relative;
  z-index: 2;
}

.color-cell.active {
  outline: 2px solid #d9a441;
  box-shadow: 0 0 0 2px rgba(217, 164, 65, 0.25);
  position: relative;
  z-index: 3;
}

.tooltip {
  position: fixed;
  pointer-events: none;
  background: rgba(20, 20, 20, 0.94);
  color: white;
  font-size: 12px;
  padding: 8px 10px;
  border-radius: 6px;
  opacity: 0;
  transform: translate(-9999px, -9999px);
  transition: opacity 0.15s ease;
  z-index: 9999;
  white-space: nowrap;
}

/* Modal */
.color-modal[hidden] {
  display: none !important;
}

.color-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
}

.color-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(2px);
}

.color-modal-card {
  position: relative;
  z-index: 1;
  margin: 6vh auto;
}

.single-color-card {
  width: min(92vw, 420px);
  padding: 18px;
  background: transparent;
  box-shadow: none;
}

.color-modal-close {
  position: absolute;
  top: 10px;
  right: 14px;
  border: 0;
  background: rgba(255, 255, 255, 0.88);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  color: #333;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  z-index: 3;
}

.selected-color-preview {
  width: 100%;
  min-height: 360px;
  border-radius: 18px;
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: 24px;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.selected-color-info {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(6px);
  border-radius: 14px;
  padding: 14px 16px;
  max-width: 100%;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.1);
}

.detail-code {
  font-size: 0.95rem;
  font-weight: 700;
  color: #444;
  margin-bottom: 6px;
}

.detail-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: #111;
  margin-bottom: 6px;
  line-height: 1.2;
}

.detail-hex {
  font-size: 0.95rem;
  color: #444;
}

/* Responsive */
@media (max-width: 1200px) {
  :root {
    --cell-size: 12px;
    --cell-gap: 1px;
  }

  .wall {
    gap: 5px;
  }

  .family-column {
    gap: 5px;
  }
}

@media (max-width: 768px) {
  .page {
    padding: 10px;
  }

  .header h1 {
    font-size: 1.5rem;
  }

  :root {
    --cell-size: 10px;
    --cell-gap: 1px;
  }

  .wall-wrapper {
    padding: 6px;
  }

  .wall {
    gap: 5px;
  }

  .family-column {
    gap: 5px;
  }

  .single-color-card {
    width: min(94vw, 360px);
    padding: 12px;
  }

  .selected-color-preview {
    min-height: 300px;
    padding: 16px;
    border-radius: 14px;
  }

  .selected-color-info {
    padding: 12px 14px;
    border-radius: 12px;
  }

  .detail-code {
    font-size: 0.85rem;
  }

  .detail-name {
    font-size: 1.1rem;
  }

  .detail-hex {
    font-size: 0.85rem;
  }

  .color-modal-close {
    width: 34px;
    height: 34px;
    font-size: 22px;
    top: 8px;
    right: 10px;
  }
}