/* ==========================================================================
   LAYOUT — Header, Sidebar, Main, Footer
   ========================================================================== */

/* ===================== HEADER ===================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-md);
  background: transparent;
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

body.scrolled .header {
  background: rgba(251, 248, 243, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}

/* Logo */
.header__logo {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  letter-spacing: 0.2em;
  font-weight: 300;
  color: var(--text-primary);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

/* Hamburger */
.header__menu-btn {
  position: relative;
  width: 28px;
  height: 20px;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header__menu-icon,
.header__menu-icon::before,
.header__menu-icon::after {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  transition: all var(--transition-normal);
}

.header__menu-icon {
  position: relative;
}

.header__menu-icon::before,
.header__menu-icon::after {
  content: '';
  position: absolute;
  left: 0;
}

.header__menu-icon::before {
  top: -7px;
}

.header__menu-icon::after {
  top: 7px;
}

/* Search */
.header__search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.header__search-btn svg {
  display: block;
}


/* ===================== SIDEBAR ===================== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  height: 100dvh;
  z-index: 200;
  background: #FAFAF8;
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
  overflow-y: auto;
  padding: 70px 16px 40px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.sidebar.active {
  transform: translateX(0);
}

.sidebar__close {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 1.5rem;
  line-height: 1;
  color: #2C2418;
  background: none;
  border: none;
  cursor: inherit;
  z-index: 1;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast);
}

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

.sidebar__chips {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 0 8px;
}

.pantone-chip {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  text-decoration: none;
  color: inherit;
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: inherit;
  background: #fff;
}

.pantone-chip:hover {
  transform: translateX(4px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.pantone-chip__color {
  width: 48px;
  min-height: 48px;
  flex-shrink: 0;
}

.pantone-chip__label {
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #fff;
}

.pantone-chip__name {
  display: block;
  font-family: 'Helvetica Neue', 'Helvetica', 'Arial', sans-serif;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: #2C2418;
}

.pantone-chip__code {
  display: block;
  font-family: 'Helvetica Neue', 'Helvetica', 'Arial', sans-serif;
  font-size: 0.55rem;
  font-weight: 300;
  color: #aaa;
  margin-top: 1px;
  letter-spacing: 0.05em;
}

/* Sidebar overlay */
.sidebar__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 150;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.sidebar__overlay.active {
  opacity: 1;
  pointer-events: auto;
}


/* ===================== MAIN ===================== */
.main {
  padding-top: var(--header-height);
}

.section {
  min-height: 100vh;
  min-height: 100dvh;
  display: none;
  padding: var(--space-xl) var(--space-md);
}

.section.active {
  display: block;
}

.section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  letter-spacing: 0.3em;
  text-align: center;
  margin-bottom: var(--space-xl);
  font-weight: 300;
  color: var(--text-primary);
}


/* ===================== FOOTER ===================== */
.footer {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  border-top: 1px solid var(--cream-300);
}

.footer__logo {
  width: 160px;
  margin: 0 auto var(--space-sm);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.footer__logo:hover {
  opacity: 1;
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

.footer__biz {
  font-size: var(--text-xs);
  color: var(--text-muted);
}