/* Critical CSS - Above the fold styles only */

/* Essential CSS Variables */
:root {
  /* Core Colors */
  --color-background: #0A0A0A;
  --color-surface: #0A0A0A;
  --color-text: #e5e5e5;
  --color-text-secondary: #e5e5e5;
  --color-primary: rgba(50, 184, 198, 1);
  --color-secondary: rgba(119, 124, 124, 0.15);
  --color-border: rgba(119, 124, 124, 0.2);
  
  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-size-base: 28px;
  --font-size-xl: 36px;
  --font-size-lg: 32px;
  --font-size-sm: 16px;
  --font-size-xs: 14px;
  --font-weight-bold: 600;
  --font-weight-semibold: 550;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  
  /* Spacing */
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;
  
  /* Layout */
  --sidebar-width-desktop: 15vw;
  --mobile-header-height: 60px;
  
  /* Animation */
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);
  
  /* Theme toggle */
  --theme-toggle-width: 60px;
  --theme-toggle-height: 24px;
  --theme-toggle-thumb-size: 18px;
  --theme-toggle-padding: 2px;
}

/* Light mode colors */
[data-color-scheme="light"] {
  --color-background: #ffffff;
  --color-surface: #ffffff;
  --color-text: rgba(19, 52, 59, 1);
  --color-text-secondary: rgba(98, 108, 113, 1);
}

/* Base styles */
html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--color-background);
  color: var(--color-text);
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 { font-size: var(--font-size-xl); }
h2 { font-size: var(--font-size-lg); }

p {
  margin: 0 0 var(--space-16) 0;
  color: var(--color-text);
}

/* Application container */
.app-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
  position: relative;
  background-color: var(--color-background);
}

/* Sidebar - Critical styles only */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-width-desktop);
  height: 100vh;
  background-color: var(--color-surface);
  padding: var(--space-32) var(--space-20);
  overflow-y: auto;
  z-index: 25;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform: translateX(0);
  transition: all var(--duration-normal) var(--ease-standard);
}

.sidebar-header {
  margin-bottom: var(--space-32);
  padding-bottom: var(--space-24);
  padding-top: var(--space-32);
  padding-left: var(--space-32);
}

.photographer-name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  color: var(--color-text);
  line-height: var(--line-height-tight);
  font-family: 'Work Sans', sans-serif !important;
  font-weight: 800 !important;
}

.photographer-subtitle {
  font-size: var(--font-size-xs);
  font-weight: 400;
  color: var(--color-text-secondary);
  letter-spacing: 0.1em;
  margin: 0;
}

/* Navigation - Critical styles */
.nav-menu {
  list-style: none;
  padding: 14px;
  margin: 0;
  flex-grow: 1;
}

.nav-item {
  margin-bottom: var(--space-16);
}

.nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 10px;
  background: transparent;
  border: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
}

.nav-link:hover {
  background-color: rgba(119, 124, 124, 0.25);
  color: var(--color-text);
}

/* Main content - Critical styles */
.main-content {
  margin-left: var(--sidebar-width-desktop);
  width: calc(100% - var(--sidebar-width-desktop));
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  background-color: var(--color-background);
  padding-left: 0;
  transition: all var(--duration-normal) var(--ease-standard);
  position: relative;
}

/* Enhanced content sections transitions - now handled via inline styles */
.content-section {
  display: none !important;
  padding: var(--space-24) var(--space-24) var(--space-24) 2vw;
  width: 100%;
  min-height: calc(100vh - 48px);
  overflow: hidden;
}

.content-section.active {
  display: block !important;
}

/* Mobile header - Critical styles */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--mobile-header-height);
  background-color: var(--color-surface);
  z-index: 15;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-20);
}

.mobile-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin: 0;
}

/* Mobile responsive - Critical breakpoint */
@media (max-width: 768px) {
  :root {
    --theme-toggle-width: 50px;
    --theme-toggle-height: 20px;
    --theme-toggle-thumb-size: 16px;
    --theme-toggle-padding: 2px;
  }

  .mobile-header {
    display: flex;
  }
  
  .sidebar {
    width: 280px;
    transform: translateX(-100%);
    transition: transform var(--duration-normal) var(--ease-standard);
  }
  
  .main-content {
    margin-left: 0 !important;
    width: 100% !important;
    padding-top: var(--mobile-header-height) !important;
  }
  
  .content-section {
    padding: var(--space-16) var(--space-16);
    min-height: auto;
  }

  .image-grid {
    column-count: 1 !important;
    column-gap: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    max-width: 100% !important;
  }

  .image-item {
    width: 100% !important;
    break-inside: avoid !important;
    -webkit-column-break-inside: avoid !important;
    page-break-inside: avoid !important;
  }

  .image-container {
    height: auto !important;
  }

  .image-container img {
    height: auto !important;
    width: 100% !important;
  }

  /* Landing page mobile styles */
  .landing-content {
    padding: var(--space-16);
  }

  .landing-nav {
    flex-direction: column;
    gap: var(--space-16);
  }

  .landing-nav-link {
    font-size: var(--font-size-sm);
    padding: var(--space-12) var(--space-20);
  }
}

@media (max-width: 480px) {
  :root {
    --theme-toggle-width: 45px;
    --theme-toggle-height: 18px;
    --theme-toggle-thumb-size: 14px;
    --theme-toggle-padding: 2px;
  }
}

/* Loading state - Critical for perceived performance */
.image-item {
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  page-break-inside: avoid;
  margin-bottom: var(--space-24);
  width: 100%;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-standard);
}

.image-grid {
  column-count: 3;
  column-gap: var(--space-24);
  column-fill: balance;
  max-width: calc(100% - 2vw);
  margin: 0;
  padding: 0 var(--space-16);
}

.image-container {
  position: relative;
  width: 100%;
  background: transparent;
  display: block;
  /* Ensure container maintains its space during loading */
  min-height: 200px;
  transition: min-height 0.3s ease;
}

.image-container img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0;
  transition: opacity 0.6s ease;
  /* Prevent layout shift during loading */
  position: relative;
  z-index: 1;
}

.image-container img.loaded {
  opacity: 1;
}

/* Remove min-height after image loads to allow natural sizing */
.image-container:has(img.loaded) {
  min-height: auto;
}

/* Landing Page Styles */
.landing-page {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: 1000;
  display: var(--landing-page-display, flex);
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  background-color: #0A0A0A;
  transition: opacity 0.8s ease, transform 0.8s ease;
  overflow: hidden;
  /* Force landing page to always use dark theme */
  --color-background: #0A0A0A !important;
  --color-surface: #0A0A0A !important;
  --color-text: #e5e5e5 !important;
  --color-text-secondary: #e5e5e5 !important;
  --color-primary: rgba(50, 184, 198, 1) !important;
}

/* Prevent body scrolling when landing page is visible */
body:has(.landing-page:not(.hidden)) {
  overflow: hidden;
}

/* Prevent scrollbars during transitions */
html, body {
  overflow-x: hidden;
}

/* Additional protection during transitions */
body.transitioning {
  overflow: hidden !important;
}

/* Extra protection for section transitions */
.content-section {
  overflow: hidden;
}

.landing-page.hidden {
  opacity: 0;
  transform: scale(1.1);
  pointer-events: none;
}

.landing-slideshow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -1;
}

.landing-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: #0A0A0A;
    opacity: 0;
    transition: opacity 2s ease-in-out;
}

.landing-slide.active {
  opacity: 1;
}

.landing-slide.active::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0) 30%, rgba(0, 0, 0, 0.8) 100%);
  pointer-events: none;
}

.landing-content {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-32);
  box-sizing: border-box;
}

.landing-title {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  opacity: 1;
  transform: translateY(0);
}

.landing-name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.05em;
    margin: 0 0 6px 0;
    color: var(--color-text);
    line-height: var(--line-height-tight);
    font-family: 'Work Sans', sans-serif !important;
    font-weight: 800 !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    cursor: default;
    min-height: 1.2em; /* Prevent height changes during animation */
    opacity: 0; /* Hide initially, shown via JS animation */
}

.landing-name .letter {
    display: inline-block;
    opacity: 0;
    transform: translateY(30px);
    will-change: transform, opacity;
    transform-origin: center center;
    vertical-align: top; /* Prevent baseline shifts during animation */
}

.landing-subtitle {
  font-size: var(--font-size-xs);
  font-weight: 400;
  color: var(--color-text-secondary);
  letter-spacing: 0.1em;
  margin: 0;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transform: translateY(20px);
}

.landing-nav {
  display: flex;
  gap: var(--space-32);
  align-items: center;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.landing-nav-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-8) var(--space-16);
  border-radius: 4px;
  transition: all var(--duration-normal) var(--ease-standard);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  cursor: pointer;
}

.landing-nav-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

/* Landing page transition animations - now handled via inline styles for consistency */

/* Enhanced app container transitions */
.app-container {
  opacity: var(--app-container-opacity, 0);
  transform: translateX(100px) scale(0.95);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  filter: blur(1px);
}

.app-container.visible {
  opacity: 1;
  transform: translateX(0) scale(1);
  filter: blur(0);
}

/* App container transitions now handled via inline styles for consistency */

.app-container.transitioning-out {
  opacity: 0;
  transform: translateX(-100px) scale(0.95);
  filter: blur(2px);
}

/* Theme toggle - Critical for user preference */

.theme-toggle {
  position: relative;
  width: var(--theme-toggle-width);
  height: var(--theme-toggle-height);
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 0;
  display: block !important;
}

.theme-toggle-track {
  position: relative;
  width: 100%;
  height: 100%;
  background-color: #000000;
  border: 1px solid #333;
  border-radius: calc(var(--theme-toggle-height) / 2);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: var(--theme-toggle-padding);
  transition: all var(--duration-normal) var(--ease-standard);
}

.theme-toggle-thumb {
  position: relative;
  width: var(--theme-toggle-thumb-size);
  height: var(--theme-toggle-thumb-size);
  background-color: #ffffff;
  border-radius: 50%;
  transition: all var(--duration-normal) var(--ease-standard);
  z-index: 3;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
}

/* Light mode theme toggle */
[data-color-scheme="light"] .theme-toggle-track {
  background-color: var(--color-background) !important;
  border-color: #ccc;
  justify-content: flex-end !important;
}

[data-color-scheme="light"] .theme-toggle-thumb {
  background-color: #0A0A0A !important;
}