/* ========================================
   color-library.css — Color Library Styles
   ======================================== */

/* ========== Container ========== */
.header__container,
.color-library__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px;
}

/* ========== Header ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  border-bottom: 1px solid var(--border);
  transition: all var(--transition-base);
}

.header__container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.header__logo-img {
  width: 32px;
  height: 32px;
  margin: 0;
  object-fit: contain;
}

.header__nav {
  display: flex;
  gap: 32px;
}

.header__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.header__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-base);
}

.header__link:hover {
  color: var(--text-primary);
}

.header__link:hover::after {
  width: 100%;
}

.header__link--active {
  color: var(--accent);
}

.header__link--active::after {
  width: 100%;
}

.header__menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 28px;
  cursor: pointer;
}

.header__menu-toggle span {
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-base);
}

.header__menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.header__menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.header__menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ========== Mobile Menu ========== */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--bg-primary);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: 24px;
  text-align: center;
}

.mobile-menu__link {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.mobile-menu__link:hover {
  color: var(--accent);
}

/* ========== Color Library Main ========== */
.color-library {
  min-height: 100vh;
  padding-top: calc(var(--header-height) + 80px);
  padding-bottom: 80px;
}

.color-library__header {
  text-align: center;
  margin-bottom: 48px;
}

.color-library__title {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.color-library__subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

/* ========== Category Tabs ========== */
.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
  justify-content: center;
  align-items: center;
  width: 100%;
  z-index: 50;
}

.category-tab {
  width: 56px;
  height: 56px;
  min-width: 56px;
  min-height: 56px;
  border-radius: 50%;
  border: 3px solid transparent;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  opacity: 1; /* ensure fully opaque */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  z-index: 60;
  background-clip: padding-box;
  border: 2px solid rgba(255,255,255,0.06);
}

/* Force visible state to avoid animation leaving tabs hidden */
.category-tab {
  opacity: 1 !important;
  visibility: visible !important;
  transform: none !important;
  pointer-events: auto !important;
}

.category-tab:hover {
  transform: scale(1.12);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

.category-tab:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.category-tab::after {
  /* hide textual labels under tabs (icons-only UI) */
  display: none !important;
}

.category-tab--active {
  border-color: var(--accent);
  transform: scale(1.16);
  box-shadow: 0 0 0 6px rgba(0,0,0,0.06);
}

.category-tab[data-category="black"] {
  border: 3px solid #333;
}
.category-tab[data-category="black"].category-tab--active {
  border-color: var(--accent);
}

/* ========== Color Grid ========== */
.color-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.color-card {
  aspect-ratio: 1;
  border-radius: 12px;
  cursor: pointer;
  transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.color-card:hover {
  transform: translateY(-8px) scale(1.05);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
  z-index: 1;
}

.color-card__hex {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.5);
  padding: 6px 10px;
  border-radius: 6px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-fast);
}

.color-card:hover .color-card__hex {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .color-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 768px) {
  .header__nav {
    display: none;
  }

  .header__menu-toggle {
    display: flex;
  }

  .color-library__title {
    font-size: 2rem;
  }

  .color-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .header__container,
  .color-library__container {
    padding: 0 24px;
  }
}

@media (max-width: 480px) {
  .color-library__title {
    font-size: 1.75rem;
  }

  .category-tab {
    padding: 8px 16px;
    font-size: 0.8125rem;
  }

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