/**
 * AILO Common Components Stylesheet
 * Header, Navigation, Footer, Buttons, Cards, Badges, Forms, Modals
 */

/* ==========================================================================
   Header & GNB
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-divider);
  z-index: 1000;
  transition: background-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.site-header--scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
}

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

/* Brand Logo */
.brand-link {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-accent, 'Gmarket Sans', sans-serif);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-midnight);
  text-decoration: none;
  min-height: 44px;
  min-width: 44px;
  transition: color var(--duration-fast);
}

.brand-link:hover,
.brand-link:focus-visible {
  color: var(--color-indigo);
}

.brand-logo-text {
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  letter-spacing: inherit;
  color: inherit;
  line-height: 1;
}

.brand-logo-img {
  height: 26px;
  width: auto;
}

/* Desktop Navigation */
.desktop-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-1);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-slate);
  min-height: 44px;
  min-width: 44px;
  position: relative;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-indigo);
}

.nav-link[aria-current="page"] {
  color: var(--color-indigo);
  font-weight: 600;
}

.nav-link[aria-current="page"]::after {
  content: '';
  position: absolute;
  bottom: 0.25rem;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-indigo);
  border-radius: var(--radius-pill);
}

/* Desktop Dropdown */
.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-slate);
  min-height: 44px;
  min-width: 44px;
  padding: var(--space-2) var(--space-1);
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-dropdown-trigger:hover,
.nav-dropdown-trigger[aria-expanded="true"] {
  color: var(--color-indigo);
}

.dropdown-arrow {
  width: 14px;
  height: 14px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav-dropdown-trigger[aria-expanded="true"] .dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 220px;
  background-color: var(--color-white);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  box-shadow: var(--shadow-lift);
  list-style: none;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out),
              visibility var(--duration-fast);
}

.nav-dropdown-menu.is-active,
.nav-item:hover .nav-dropdown-menu,
.nav-item:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item-link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--duration-fast), color var(--duration-fast);
}

.dropdown-item-link:hover,
.dropdown-item-link:focus-visible {
  background-color: var(--color-indigo-mist);
  color: var(--color-indigo);
}

/* Mobile Hamburger Toggle */
.mobile-nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  color: var(--color-midnight);
  z-index: 1100;
}

.hamburger-box {
  width: 22px;
  height: 16px;
  position: relative;
  display: inline-block;
}

.hamburger-line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  transition: transform var(--duration-fast) var(--ease-out),
              top var(--duration-fast) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
}

.hamburger-line:nth-child(1) { top: 0; }
.hamburger-line:nth-child(2) { top: 7px; }
.hamburger-line:nth-child(3) { top: 14px; }

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  top: 7px;
  transform: rotate(45deg);
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  top: 7px;
  transform: rotate(-45deg);
}

/* Mobile Drawer & Overlay */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-base) var(--ease-out),
              visibility var(--duration-base);
}

.drawer-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(85vw, 360px);
  background-color: var(--color-white);
  z-index: 1060;
  padding: calc(var(--header-height-mobile) + var(--space-4)) var(--space-4) var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform: translateX(100%);
  transition: transform var(--duration-base) var(--ease-out);
  overflow-y: auto;
  box-shadow: -10px 0 30px rgba(15, 23, 42, 0.1);
}

.mobile-drawer.is-open {
  transform: translateX(0);
}

.mobile-drawer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-drawer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-3);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-midnight);
  border-radius: var(--radius-md);
  min-height: 48px;
}

.mobile-drawer-link:hover,
.mobile-drawer-link:focus-visible {
  background-color: var(--color-cloud);
  color: var(--color-indigo);
}

.mobile-drawer-link[aria-current="page"] {
  background-color: var(--color-indigo-mist);
  color: var(--color-indigo);
}

.mobile-sub-list {
  list-style: none;
  padding-left: var(--space-4);
  margin-top: var(--space-1);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-sub-link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: 0.9375rem;
  color: var(--color-slate);
  border-radius: var(--radius-sm);
  min-height: 44px;
}

.mobile-sub-link:hover,
.mobile-sub-link:focus-visible {
  color: var(--color-indigo);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  min-width: 44px;
  padding: 0.75rem 1.625rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background-color: var(--color-action);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(63, 81, 247, 0.25);
}

.btn--primary:hover {
  background-color: var(--color-action-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(63, 81, 247, 0.35);
  color: var(--color-white);
}

.btn--secondary {
  background-color: var(--color-white);
  border-color: var(--color-border);
  color: var(--color-midnight);
  box-shadow: var(--shadow-sm);
}

.btn--secondary:hover {
  background-color: var(--color-soft-cloud);
  border-color: var(--color-slate-gray);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-midnight);
}

.btn--ghost:hover {
  background-color: var(--color-cloud);
  color: var(--color-indigo);
}

.btn--sm {
  min-height: 40px;
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

.btn--lg {
  min-height: 56px;
  padding: 1rem 2.25rem;
  font-size: 1.0625rem;
}

.btn--full {
  width: 100%;
}

/* ==========================================================================
   Badges & Pills
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1;
}

.badge--indigo {
  background-color: var(--color-indigo-mist);
  color: var(--color-indigo);
}

.badge--concept {
  background-color: rgba(139, 92, 246, 0.1);
  color: var(--color-violet);
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.badge--confirmed {
  background-color: rgba(45, 212, 191, 0.1);
  color: var(--color-mint-deep);
  border: 1px solid rgba(45, 212, 191, 0.3);
}

/* ==========================================================================
   Cards & Bento
   ========================================================================== */

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
  position: relative;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
  border-color: var(--color-border);
}

.card--glass {
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-soft);
}

/* Thumbnail wrapper */
.card-media-wrapper {
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: transparent;
  position: relative;
  margin-bottom: var(--space-4);
  border: 1px solid var(--color-divider);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
}

.card-media-wrapper img,
.card-media-wrapper svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform var(--duration-base) var(--ease-out);
}

.card:hover .card-media-wrapper img,
.card:hover .card-media-wrapper svg {
  transform: scale(1.03);
}

/* ==========================================================================
   Form Controls
   ========================================================================== */

.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-midnight);
  margin-bottom: var(--space-1);
}

.form-label .required-indicator {
  color: #EF4444;
  margin-left: 0.25rem;
}

.form-control {
  width: 100%;
  min-height: 48px;
  padding: 0.85rem 1.125rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  color: var(--color-text);
  font-size: 1rem;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}

.form-control:focus {
  border-color: var(--color-indigo);
  outline: none;
  box-shadow: 0 0 0 3px var(--color-indigo-mist);
}

.form-control[aria-invalid="true"] {
  border-color: #EF4444;
  background-color: #FEF2F2;
}

.form-control[aria-invalid="true"]:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 16px;
  padding-right: 2.5rem;
}

textarea.form-control {
  min-height: 180px;
  resize: vertical;
  line-height: 1.5;
}

.form-hint {
  font-size: 0.8125rem;
  color: var(--color-slate-gray);
  margin-top: 0.35rem;
}

.form-error {
  font-size: 0.8125rem;
  color: #EF4444;
  margin-top: 0.35rem;
  display: none;
  align-items: center;
  gap: 0.25rem;
  font-weight: 500;
}

.form-error.is-visible {
  display: flex;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background-color: var(--color-midnight);
  color: var(--color-soft-gray);
  padding-block: var(--space-8) var(--space-6);
  border-top: 1px solid var(--color-deep-slate);
  margin-top: auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1.3fr;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-deep-slate);
}

.footer-brand-col {
  max-width: 380px;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-2);
  display: inline-block;
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--color-soft-gray);
  line-height: 1.5;
}

.footer-business-info {
  font-style: normal;
  font-size: 0.8125rem;
  color: var(--color-slate-gray);
  line-height: 1.65;
  margin-top: var(--space-3);
}

.footer-col-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-nav-link {
  font-size: 0.875rem;
  color: var(--color-soft-gray);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: color var(--duration-fast);
}

.footer-nav-link:hover,
.footer-nav-link:focus-visible {
  color: var(--color-white);
}

.footer-bottom {
  padding-top: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: 0.8125rem;
  color: var(--color-slate-gray);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 991px) {
  .desktop-nav {
    display: none;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
  }

  .footer-brand-col {
    grid-column: 1 / -1;
    max-width: 100%;
  }
}

@media (max-width: 767px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}