/* ==========================================================================
   IRIS OHYAMA - Layout Styles
   Header / Footer / Navigation / Grid Layout (BEM)
   ========================================================================== */

/* Header
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background-color: var(--color-bg);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
  transition: box-shadow var(--transition-base);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.header__logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--color-secondary);
}

.header__logo-img {
  height: 44px;
  width: auto;
  display: block;
}

.header__logo-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: 1px;
}

.header__logo-sub {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  display: block;
  margin-top: -2px;
}

.header__logo-fallback {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: 1px;
}

/* Main Navigation
   ========================================================================== */
.nav {
  display: flex;
  align-items: center;
  height: 100%;
}

.nav__list {
  display: flex;
  align-items: center;
  height: 100%;
  gap: var(--spacing-xs);
}

.nav__item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav__link {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 var(--spacing-md);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--spacing-md);
  right: var(--spacing-md);
  height: 3px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
  border-radius: 2px 2px 0 0;
}

.nav__link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.nav__link:hover::after,
.nav__link--active::after {
  transform: scaleX(1);
}

.nav__link--active {
  color: var(--color-primary);
}

/* Navigation with Submenu */
.nav__item--has-submenu {
  position: relative;
}

.nav__item--has-submenu > .nav__link::before {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: var(--spacing-xs);
  transition: transform var(--transition-fast);
}

.nav__submenu {
  position: absolute;
  top: 100%;
  left: 50%;
  min-width: 240px;
  background-color: var(--color-bg);
  box-shadow: 0 10px 38px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  padding: var(--spacing-sm) 0;
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -8px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  z-index: 100;
}

/* Arrow indicator */
.nav__submenu::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border-light);
  border-left: 1px solid var(--color-border-light);
  border-radius: 2px 0 0 0;
}

.nav__item--has-submenu:hover .nav__submenu,
.nav__item--has-submenu:focus-within .nav__submenu {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.nav__submenu-item {
  display: block;
}

.nav__submenu-link {
  display: block;
  padding: 10px var(--spacing-lg);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
  border-left: 3px solid transparent;
  margin: 0 var(--spacing-xs);
  border-radius: var(--radius-sm);
}

.nav__submenu-link:hover {
  background-color: rgba(230, 0, 18, 0.04);
  color: var(--color-primary);
  text-decoration: none;
  border-left-color: var(--color-primary);
  padding-left: calc(var(--spacing-lg) + 4px);
}

.nav__submenu-item:first-child .nav__submenu-link {
  margin-top: var(--spacing-xs);
}

.nav__submenu-item:last-child .nav__submenu-link {
  margin-bottom: var(--spacing-xs);
}

/* Header Right */
.header__right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
}

/* Hamburger Menu Button */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
  cursor: pointer;
  background: none;
  border: none;
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-secondary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.hamburger--active .hamburger__line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger--active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger--active .hamburger__line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Main Content
   ========================================================================== */
.main-content {
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

.main-content--full {
  max-width: 100%;
  padding-left: 0;
  padding-right: 0;
}

/* Page Layout with Sidebar */
.page-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  padding-bottom: var(--spacing-3xl);
}

/* Sidebar Navigation */
.sidebar-nav {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: fit-content;
  position: sticky;
  top: calc(var(--header-height) + var(--spacing-lg));
}

.sidebar-nav__title {
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-primary);
  color: var(--color-bg);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
}

.sidebar-nav__list {
  padding: var(--spacing-sm) 0;
}

.sidebar-nav__item {
  border-bottom: 1px solid var(--color-border-light);
}

.sidebar-nav__item:last-child {
  border-bottom: none;
}

.sidebar-nav__link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.sidebar-nav__link:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
  text-decoration: none;
}

.sidebar-nav__link--active {
  background-color: rgba(230, 0, 18, 0.05);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  border-left: 3px solid var(--color-primary);
}

/* Content Area */
.content-area {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  min-height: 400px;
}

.content-area__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-border);
}

/* Footer
   ========================================================================== */
.footer {
  background-color: var(--color-bg-dark);
  color: #CCCCCC;
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin-top: var(--spacing-3xl);
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
}

.footer__column-title {
  color: var(--color-bg);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__link {
  color: #AAAAAA;
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-bg);
  text-decoration: none;
}

.footer__bottom {
  max-width: var(--max-width);
  margin: var(--spacing-xl) auto 0;
  padding-top: var(--spacing-lg);
  border-top: 1px solid #333333;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer__copyright {
  font-size: var(--font-size-sm);
  color: #888888;
}

.footer__legal {
  display: flex;
  gap: var(--spacing-md);
}

.footer__legal-link {
  font-size: var(--font-size-sm);
  color: #888888;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__legal-link:hover {
  color: var(--color-bg);
  text-decoration: none;
}