/**
 * SunoPadho — Layout & Navigation Architecture
 */

/* Main App Wrapper */
.app-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--sp-canvas);
  position: relative;
}

/* ==========================================================================
   DESKTOP & GLOBAL HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--sp-z-sticky);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--sp-border-subtle);
  transition: all var(--sp-transition-base);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--sp-space-4);
}

/* Official Logo Treatment */
.brand-logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  transition: transform var(--sp-transition-fast);
}

.brand-logo-link:hover .brand-logo-img {
  transform: scale(1.02);
}

/* Header Navigation Links */
.nav-links-desktop {
  display: none;
  align-items: center;
  gap: var(--sp-space-6);
  margin-left: var(--sp-space-4);
}

@media (min-width: 1024px) {
  .nav-links-desktop {
    display: flex;
  }
}

.nav-link {
  font-weight: 500;
  font-size: var(--sp-text-sm);
  color: var(--sp-text-secondary);
  padding: var(--sp-space-2) 0;
  position: relative;
  transition: color var(--sp-transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--sp-navy-850);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--sp-emerald-850);
  border-radius: var(--sp-radius-full);
}

/* Header Search Bar (Desktop) */
.header-search-box {
  display: none;
  flex: 1;
  max-width: 380px;
  position: relative;
  margin: 0 var(--sp-space-2);
}

@media (min-width: 768px) {
  .header-search-box {
    display: block;
  }
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.search-input-wrapper .search-icon {
  position: absolute;
  left: 14px;
  color: var(--sp-text-tertiary);
  pointer-events: none;
}

.header-search-input {
  width: 100%;
  height: 42px;
  padding: 0 16px 0 42px;
  background-color: var(--sp-surface-subtle);
  border: 1px solid transparent;
  border-radius: var(--sp-radius-full);
  font-size: var(--sp-text-sm);
  color: var(--sp-text-primary);
  transition: all var(--sp-transition-fast);
}

.header-search-input:focus {
  background-color: var(--sp-surface-pure);
  border-color: var(--sp-emerald-700);
  box-shadow: 0 0 0 3px var(--sp-emerald-50);
  outline: none;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-space-3);
}

/* Language Switcher Dropdown */
.lang-selector-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--sp-border-default);
  border-radius: var(--sp-radius-md);
  font-size: var(--sp-text-sm);
  font-weight: 500;
  color: var(--sp-navy-850);
  background: var(--sp-surface-pure);
  transition: all var(--sp-transition-fast);
}

.lang-selector-btn:hover {
  border-color: var(--sp-emerald-700);
  background-color: var(--sp-emerald-50);
}

/* Senior Mode Toggle Pill */
.mode-toggle-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--sp-radius-md);
  font-size: var(--sp-text-xs);
  font-weight: 600;
  border: 1px solid var(--sp-border-subtle);
  background: var(--sp-surface-subtle);
  color: var(--sp-navy-800);
  transition: all var(--sp-transition-fast);
}

.mode-toggle-btn:hover {
  background-color: var(--sp-surface-hover);
}

.mode-toggle-btn.active {
  background-color: var(--sp-navy-850);
  color: var(--sp-text-inverse);
  border-color: var(--sp-navy-850);
}

/* Premium Header CTA */
.btn-header-premium {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: linear-gradient(135deg, var(--sp-amber-500) 0%, #C97508 100%);
  color: #FFFFFF;
  border-radius: var(--sp-radius-full);
  font-size: var(--sp-text-sm);
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(217, 137, 24, 0.25);
  transition: all var(--sp-transition-fast);
}

.btn-header-premium:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(217, 137, 24, 0.35);
}

/* User Profile Avatar / Button */
.user-profile-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px;
  border-radius: var(--sp-radius-full);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sp-navy-850), var(--sp-emerald-850));
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--sp-text-sm);
  font-weight: 600;
}

/* ==========================================================================
   MAIN CONTENT AREA
   ========================================================================== */
.main-content {
  flex: 1;
  padding-bottom: 120px; /* Leave space for sticky mini-player & mobile bottom nav */
}

/* ==========================================================================
   MOBILE BOTTOM NAVIGATION (Sticky)
   ========================================================================== */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--sp-z-bottom-nav);
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--sp-border-subtle);
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 64px;
  padding: 0 var(--sp-space-2);
}

@media (min-width: 1024px) {
  .bottom-nav {
    display: none; /* Desktop uses top header nav */
  }
  .main-content {
    padding-bottom: 90px;
  }
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: var(--sp-text-tertiary);
  font-size: 11px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--sp-radius-md);
  transition: all var(--sp-transition-fast);
  min-width: 60px;
}

.bottom-nav-item svg {
  width: 22px;
  height: 22px;
  stroke-width: 2;
  transition: transform var(--sp-transition-fast);
}

.bottom-nav-item:hover, .bottom-nav-item.active {
  color: var(--sp-emerald-850);
}

.bottom-nav-item.active svg {
  transform: scale(1.1);
  color: var(--sp-emerald-850);
}

/* ==========================================================================
   FOOTER (Desktop & Tablet)
   ========================================================================== */
.site-footer {
  background-color: var(--sp-navy-950);
  color: var(--sp-navy-100);
  padding: var(--sp-space-16) 0 var(--sp-space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-space-10);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
  }
}

.footer-brand-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
  background: #FFFFFF;
  padding: 4px 8px;
  border-radius: var(--sp-radius-sm);
  margin-bottom: var(--sp-space-4);
}

.footer-desc {
  font-size: var(--sp-text-sm);
  color: var(--sp-navy-300);
  line-height: 1.6;
  max-width: 320px;
}

.footer-title {
  color: #FFFFFF;
  font-size: var(--sp-text-base);
  font-weight: 600;
  margin-bottom: var(--sp-space-4);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-space-3);
}

.footer-link {
  font-size: var(--sp-text-sm);
  color: var(--sp-navy-300);
  transition: color var(--sp-transition-fast);
}

.footer-link:hover {
  color: var(--sp-emerald-300);
}

.footer-bottom {
  margin-top: var(--sp-space-12);
  padding-top: var(--sp-space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: var(--sp-space-4);
  align-items: center;
  justify-content: space-between;
  font-size: var(--sp-text-xs);
  color: var(--sp-navy-300);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

/* ==========================================================================
   SENIOR-FRIENDLY MODE ADJUSTMENTS
   ========================================================================== */
body.senior-mode .header-container {
  height: 84px;
}

body.senior-mode .brand-logo-img {
  height: 56px;
}

body.senior-mode .nav-link {
  font-size: var(--sp-text-md);
  font-weight: 600;
}

body.senior-mode .bottom-nav {
  height: 76px;
}

body.senior-mode .bottom-nav-item {
  font-size: 14px;
  font-weight: 700;
  gap: 4px;
}

body.senior-mode .bottom-nav-item svg {
  width: 26px;
  height: 26px;
}