/* =============================================================================
   LAYOUT - Modern Sidebar + Content Structure
   ============================================================================= */

/* ========================================
   SIDEBAR - Fixed Navigation
   ======================================== */

.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-primary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sticky);
  overflow-y: auto;
}

.sidebar-header {
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  flex-shrink: 0;
}

.sidebar-header .logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.sidebar-header .logo img {
  width: 100%;
  height: auto;
  max-width: 200px;
  max-height: 80px;
  object-fit: contain;
}

.sidebar-nav {
  flex: 1;
  padding: var(--spacing-4);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--bg-accent);
  color: var(--primary-text);
  border-color: var(--primary);
}

.nav-item .icon {
  font-size: var(--text-lg);
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.nav-item .label {
  flex: 1;
}

.nav-item .badge {
  background: var(--error);
  color: white;
  font-size: var(--text-xs);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  min-width: 20px;
  text-align: center;
  font-weight: var(--font-semibold);
}

.sidebar-footer {
  padding: var(--spacing-4);
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
}

/* Header - Fixed at top */
.main-content .header {
  position: sticky;
  top: 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  padding: var(--spacing-4) var(--spacing-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: var(--z-fixed);
  height: var(--header-height);
  box-shadow: var(--shadow-sm);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.page-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  margin: 0;
}

/* Sidebar Toggle (hidden on desktop) */
.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--text-2xl);
  cursor: pointer;
  padding: var(--spacing-2);
  color: var(--text-primary);
  border-radius: var(--radius-md);
}

.sidebar-toggle:hover {
  background: var(--bg-hover);
}

/* Header Actions */
.btn-icon {
  position: relative;
  background: none;
  border: none;
  font-size: var(--text-xl);
  cursor: pointer;
  padding: var(--spacing-2);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.notification-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  background: var(--error);
  border-radius: 50%;
  border: 2px solid var(--bg-primary);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  font-size: var(--text-sm);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.user-menu:hover {
  border-color: var(--primary);
  background: var(--bg-hover);
}

.subscription-badge {
  background: var(--primary-strong);
  color: white;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ========================================
   HEADER - Profile Dropdown
   ======================================== */

.profile-btn {
  position: relative;
}

.profile-dropdown {
  position: absolute;
  top: calc(100% + var(--spacing-2));
  right: 0;
  min-width: 240px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
  overflow: hidden;
}

.profile-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.profile-dropdown-header {
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.profile-dropdown-user {
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  font-size: var(--text-sm);
  margin-bottom: var(--spacing-1);
}

.profile-dropdown-email {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.profile-dropdown-menu {
  padding: var(--spacing-2);
}

.profile-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.profile-dropdown-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.profile-dropdown-item .icon {
  font-size: var(--text-lg);
  width: 20px;
  text-align: center;
}

.profile-dropdown-divider {
  height: 1px;
  background: var(--border);
  margin: var(--spacing-2) 0;
}

.profile-dropdown-item.danger {
  color: var(--error);
}

.profile-dropdown-item.danger:hover {
  background: var(--error-light);
  color: var(--error);
}

/* ========================================
   PAGE CONTENT
   ======================================== */

.page-content {
  flex: 1;
  padding: var(--content-padding);
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
}

/* Fullscreen pages (kalenteri yms.) - ei paddingia eikä max-width */
.page-content.fullscreen {
  padding: 0;
  max-width: none;
  position: relative;
  height: calc(100vh - var(--header-height));
  overflow: hidden;
}

/* ========================================
   GRID & UTILITIES
   ======================================== */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--content-padding);
  width: 100%;
}

.grid {
  display: grid;
  gap: var(--spacing-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

/* Section */
.section {
  margin-bottom: var(--spacing-12);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-6);
}

.section-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
}

.section-description {
  color: var(--text-secondary);
  font-size: var(--text-base);
  margin-top: var(--spacing-2);
}

/* ========================================
   MOBILE RESPONSIVE
   ======================================== */

/* Sidebar overlay for mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-sticky) - 1);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sidebar-overlay.active {
  display: block;
  opacity: 1;
}

body.sidebar-open {
  overflow: hidden;
}

@media (max-width: 768px) {
  /* Hide sidebar by default on mobile */
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    z-index: var(--z-modal);
    box-shadow: var(--shadow-xl);
  }

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

  /* Adjust header for smaller logo */
  .sidebar-header {
    min-height: 70px;
    padding: var(--spacing-4);
  }

  .sidebar-header .logo img {
    max-width: 140px;
    max-height: 60px;
  }

  /* Remove left margin on main content */
  .main-content {
    margin-left: 0;
  }

  /* Show sidebar toggle */
  .sidebar-toggle {
    display: block;
  }

  /* Header scrolls away on mobile (your preference) */
  .main-content .header {
    position: fixed;
    left: 0;
    right: 0;
    transition: transform var(--transition-base);
  }

  .main-content .header.header-hidden {
    transform: translateY(-100%);
  }

  /* Adjust page content padding */
  .page-content {
    padding: var(--spacing-4);
    padding-top: calc(var(--header-height) + var(--spacing-4));
  }

  /* Simplify user menu on mobile */
  .user-menu {
    padding: var(--spacing-2);
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
  }

  .user-menu #userName,
  .user-menu .subscription-badge {
    display: none;
  }

  /* Stack grids on mobile */
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   SIVUN LATAUS JA LATAUSVIRHE (router)
   ======================================== */

.page-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
  min-height: 40vh;
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.page-loading .spinner {
  width: 28px;
  height: 28px;
  border-width: 3px;
}

.page-load-error {
  max-width: 420px;
  margin: var(--spacing-12) auto;
  padding: var(--spacing-8);
  text-align: center;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}

.page-load-error h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-2);
  color: var(--text-primary);
}

.page-load-error p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-5);
}

/* ========================================
   SAAVUTETTAVUUS: OHITUSLINKKI
   ======================================== */

.skip-link {
  position: fixed;
  top: var(--spacing-2);
  left: var(--spacing-2);
  z-index: 10100;
  padding: var(--spacing-2) var(--spacing-4);
  background: var(--primary-strong);
  color: var(--on-primary);
  border-radius: var(--radius-md);
  font-weight: var(--font-semibold);
  transform: translateY(-200%);
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ========================================
   SIVUPALKIN RYHMÄT JA ROOLIKOHDAT
   ======================================== */

.sidebar-nav {
  gap: var(--spacing-1);
}

.nav-section-label {
  margin: var(--spacing-4) 0 var(--spacing-1);
  padding: 0 var(--spacing-4);
  font-size: 11px;
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.nav-item:focus-visible,
.bottom-nav-item:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.nav-unread-badge {
  margin-left: auto;
}

.sidebar-header .logo picture {
  display: flex;
  justify-content: center;
  width: 100%;
}

/* ========================================
   HEADER: SIVUN OTSIKKO (vain mobiili)
   ======================================== */

.header-page-title {
  display: none;
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ========================================
   PROFIILIVALIKON VÄRITEEMA
   ======================================== */

.profile-dropdown-themes {
  padding: var(--spacing-3) var(--spacing-4);
  border-bottom: 1px solid var(--border);
}

.profile-dropdown-label {
  display: block;
  margin-bottom: var(--spacing-2);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.theme-swatches {
  display: flex;
  gap: var(--spacing-2);
}

.theme-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--bg-primary);
  background: var(--swatch);
  box-shadow: 0 0 0 1px var(--border);
  cursor: pointer;
  padding: 0;
  transition: transform var(--transition-fast);
}

.theme-swatch:hover {
  transform: scale(1.1);
}

.theme-swatch[aria-pressed="true"] {
  box-shadow: 0 0 0 2px var(--text-primary);
}

.theme-swatch:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* ========================================
   YHTEYS KATKENNUT -ILMOITUS
   ======================================== */

.offline-banner {
  position: sticky;
  top: var(--header-height);
  z-index: calc(var(--z-fixed) - 1);
  padding: var(--spacing-2) var(--spacing-4);
  background: #92400e;
  color: #fff;
  font-size: var(--text-sm);
  text-align: center;
}

/* ========================================
   MOBIILIN ALAPALKKI
   ======================================== */

.bottom-nav {
  display: none;
}

@media (max-width: 768px) {
  :root {
    --tabbar-height: 64px;
  }

  .header-page-title {
    display: block;
  }

  .main-content .header {
    padding: var(--spacing-3) var(--spacing-4);
  }

  .header-left {
    gap: var(--spacing-2);
    min-width: 0;
    flex: 1;
  }

  /* Profiilipainike pelkkänä ikonina, jotta otsikolle jää tilaa */
  .profile-btn .text {
    display: none;
  }

  .offline-banner {
    position: fixed;
    left: 0;
    right: 0;
  }

  body.has-bottom-nav .page-content {
    padding-bottom: calc(var(--tabbar-height) + var(--spacing-6) + env(safe-area-inset-bottom, 0px));
  }

  .bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-fixed);
    display: flex;
    height: calc(var(--tabbar-height) + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.06);
  }

  .bottom-nav-item {
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-height: 44px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 11px;
    font-weight: var(--font-medium);
  }

  .bottom-nav-icon {
    font-size: 1.3rem;
    line-height: 1;
    filter: grayscale(0.6);
    opacity: 0.8;
  }

  .bottom-nav-item.active {
    color: var(--primary-text);
    font-weight: var(--font-semibold);
  }

  .bottom-nav-item.active .bottom-nav-icon {
    filter: none;
    opacity: 1;
  }

  .bottom-nav-item.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 25%;
    right: 25%;
    height: 3px;
    border-radius: 0 0 3px 3px;
    background: var(--primary);
  }

  .bottom-nav-badge {
    position: absolute;
    top: 6px;
    left: calc(50% + 6px);
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: var(--radius-full);
    background: var(--error);
    color: #fff;
    font-size: 11px;
    font-weight: var(--font-bold);
    line-height: 18px;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}