/* ====================================
   CSS Variables - Lens-style Theme
   ==================================== */
:root {
  /* Grayscale palette */
  --color-black: #000000;
  --color-gray-900: #1a1a1a;
  --color-gray-800: #2d2d2d;
  --color-gray-700: #404040;
  --color-gray-500: #999999;
  --color-gray-300: #b3b3b3;
  --color-gray-200: #cccccc;
  --color-gray-100: #e6e6e6;
  --color-white: #ffffff;

  /* Semantic colors */
  --color-background: var(--color-black);
  --color-text: var(--color-white);
  --color-text-muted: var(--color-gray-300);
  --color-border: var(--color-gray-800);
  --color-hover: var(--color-gray-900);

  /* Typography */
  --font-primary: Georgia, 'Times New Roman', serif;
  --font-secondary: 'Helvetica Neue', Arial, sans-serif;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 32px;
  --spacing-lg: 64px;
  --spacing-xl: 96px;

  /* Layout */
  --side-panel-width: 300px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* ====================================
   Base Styles
   ==================================== */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-secondary);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-background);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ====================================
   Typography
   ==================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: 1.2;
  margin: 0 0 var(--spacing-sm) 0;
}

h1 {
  font-size: 28px;
  letter-spacing: -0.5px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 20px;
}

p {
  margin: 0 0 var(--spacing-sm) 0;
}

a {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-gray-300);
}

a:focus {
  outline: 2px solid var(--color-white);
  outline-offset: 2px;
}

/* ====================================
   Mobile Header (hidden on desktop)
   ==================================== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background-color: var(--color-black);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  padding: 0 var(--spacing-sm);
  align-items: center;
  justify-content: space-between;
}

.mobile-title {
  font-size: 20px;
  font-weight: 400;
  margin: 0;
}

.nav-toggle {
  display: flex;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

.nav-toggle:focus {
  outline: 2px solid var(--color-white);
  outline-offset: 2px;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  position: relative;
  transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  position: absolute;
  left: 0;
  transition: transform var(--transition-normal);
}

.hamburger::before {
  top: -7px;
}

.hamburger::after {
  top: 7px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: translateY(-7px) rotate(-45deg);
}

/* ====================================
   Side Panel
   ==================================== */
.side-panel {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--side-panel-width);
  background-color: var(--color-black);
  border-right: 1px solid var(--color-border);
  z-index: 100;
  overflow-y: auto;
}

.side-panel-content {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: var(--spacing-lg) var(--spacing-md);
}

.side-panel-header {
  margin-bottom: var(--spacing-lg);
}

.site-title {
  font-size: 24px;
  font-weight: 400;
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.5px;
}

.site-tagline {
  font-size: 14px;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.5;
}

/* Side Panel Navigation */
.side-panel-nav {
  margin-bottom: var(--spacing-lg);
}

.side-panel-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.side-panel-nav li {
  margin-bottom: var(--spacing-xs);
}

.side-panel-nav a {
  display: block;
  padding: var(--spacing-xs) 0;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.side-panel-nav a:hover,
.side-panel-nav a.active {
  color: var(--color-white);
}

/* Side Panel Social */
.side-panel-social {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: auto;
  padding-top: var(--spacing-lg);
}

.side-panel-social a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.side-panel-social a:hover {
  color: var(--color-white);
}

.side-panel-social svg {
  width: 20px;
  height: 20px;
}

/* Side Panel Footer */
.side-panel-footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.side-panel-footer p {
  font-size: 12px;
  color: var(--color-gray-500);
  margin: 0;
}

/* Side Panel Overlay (for mobile) */
.side-panel-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.side-panel-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ====================================
   Main Content
   ==================================== */
.main-content {
  margin-left: var(--side-panel-width);
  min-height: 100vh;
}

/* ====================================
   Section Styles
   ==================================== */
section {
  padding: var(--spacing-lg) var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.section-title {
  font-size: 14px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-muted);
}

.section-intro {
  max-width: 600px;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-muted);
  font-size: 16px;
}

/* ====================================
   Gallery Section
   ==================================== */
.gallery-section {
  padding: var(--spacing-md);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1em;
}

.gallery-item {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  background-color: var(--color-gray-900);
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.gallery-item:hover img {
  transform: scale(1.05);
  opacity: 0.8;
}

.gallery-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-gray-900);
  border: 1px solid var(--color-border);
}

.gallery-placeholder p {
  color: var(--color-text-muted);
  text-align: center;
  font-size: 14px;
}

/* Gallery Captions */
.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md) var(--spacing-sm);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.7) 60%, transparent 100%);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
}

.gallery-item:hover .gallery-caption,
.gallery-item:focus .gallery-caption,
.gallery-item:focus-within .gallery-caption {
  transform: translateY(0);
}

.gallery-caption h3 {
  font-size: 16px;
  font-weight: 400;
  margin: 0 0 var(--spacing-xs) 0;
  color: var(--color-white);
}

.gallery-caption p {
  font-size: 13px;
  line-height: 1.5;
  margin: 0;
  color: var(--color-text-muted);
}

/* ====================================
   About Section
   ==================================== */
.about-section {
  padding: var(--spacing-lg) var(--spacing-md);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-lg);
  align-items: start;
  max-width: 900px;
}

.about-image {
  width: 100%;
  height: auto;
  display: block;
}

.about-text p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ====================================
   Contact Section
   ==================================== */
.contact-section {
  padding: var(--spacing-lg) var(--spacing-md);
}

.contact-content {
  max-width: 600px;
}

.contact-info p {
  font-size: 16px;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-muted);
}

.contact-info a {
  color: var(--color-white);
}

.contact-info a:hover {
  color: var(--color-gray-300);
}

.instagram-link a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.instagram-icon {
  width: 20px;
  height: 20px;
  stroke: currentColor;
}

/* ====================================
   Responsive Design
   ==================================== */

/* Tablet and smaller */
@media (max-width: 1024px) {
  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .about-image {
    max-width: 400px;
  }
}

/* Mobile: up to 768px */
@media (max-width: 768px) {
  /* Show mobile header */
  .mobile-header {
    display: flex;
  }

  /* Side panel becomes overlay */
  .side-panel {
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    z-index: 1001;
  }

  .side-panel.active {
    transform: translateX(0);
  }

  .side-panel-overlay {
    display: block;
  }

  /* Main content takes full width */
  .main-content {
    margin-left: 0;
    padding-top: 60px;
  }

  /* Gallery adjustments */
  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 0.5em;
  }

  .gallery-section {
    padding: var(--spacing-sm);
  }

  /* Section adjustments */
  section {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .section-title {
    font-size: 12px;
    letter-spacing: 2px;
  }

  /* Hide captions on mobile by default */
  .gallery-caption {
    display: none;
  }

  /* About adjustments */
  .about-content {
    grid-template-columns: 1fr;
  }

  .about-image {
    max-width: 100%;
  }
}

/* ====================================
   Accessibility
   ==================================== */
.skip-link {
  position: fixed;
  top: -100px;
  left: var(--spacing-sm);
  background-color: var(--color-white);
  color: var(--color-black);
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 10001;
  font-weight: 600;
  text-decoration: none;
  transition: top var(--transition-fast);
  border-radius: 4px;
}

.skip-link:focus {
  top: var(--spacing-sm);
  outline: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Reduce motion for users who prefer it */
@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;
  }
}