/* assets/css/style.css */
:root {
  /* Minimal monochrome high-contrast palette */
  --color-bg: #ffffff;
  --color-text: #000000;
  --color-secondary: #666666;
  --color-muted: #999999;
  --color-border: #e5e5e5;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Typography */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Layout */
  --sidebar-width: 320px;
  --header-height: 80px;
}

/* Dark mode variables */
[data-theme="dark"] {
  --color-bg: #000000;
  --color-text: #ffffff;
  --color-secondary: #a0a0a0;
  --color-muted: #666666;
  --color-border: #333333;
}

/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: var(--header-height); /* Account for fixed navigation */
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* Scroll progress indicator */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-border);
  z-index: 1000;
}

.scroll-progress-bar {
  height: 100%;
  background: var(--color-text);
  width: 0%;
  transition: width var(--transition-fast);
}

/* Theme toggle - fixed positioning with reserved space */
.theme-toggle {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 1001;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--color-text);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .theme-toggle {
  background: var(--color-bg);
  box-shadow: 0 2px 8px rgba(255, 255, 255, 0.1);
}

.theme-toggle:hover {
  border-color: var(--color-text);
  background: var(--color-text);
  color: var(--color-bg);
  transform: scale(1.05);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
  position: absolute;
  transition: all var(--transition-base);
}

[data-theme="light"] .theme-toggle .sun-icon {
  opacity: 1;
  transform: rotate(0deg);
}

[data-theme="light"] .theme-toggle .moon-icon {
  opacity: 0;
  transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle .sun-icon {
  opacity: 0;
  transform: rotate(-180deg);
}

[data-theme="dark"] .theme-toggle .moon-icon {
  opacity: 1;
  transform: rotate(0deg);
}

/* Hero section with reserved space for theme toggle */
#hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  text-align: center;
  padding: var(--spacing-2xl);
  padding-right: calc(var(--spacing-2xl) + 80px); /* Reserve space for toggle */
  position: relative;
  background: var(--color-bg);
}

.wordmark {
  font-weight: var(--font-weight-black);
  font-size: clamp(3rem, 8vw, 8rem);
  line-height: 0.9;
  margin-bottom: var(--spacing-xl);
  color: var(--color-text);
  letter-spacing: -0.03em;
  font-variant: small-caps;
}

.tagline {
  font-weight: var(--font-weight-medium);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  max-width: 60ch;
  color: var(--color-secondary);
  line-height: 1.4;
  margin-bottom: var(--spacing-2xl);
}

/* Scroll to vision button */
.scroll-to-vision {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  background: transparent;
  backdrop-filter: none;
  border: none;
  border-radius: 50px;
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: color var(--transition-base), transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  padding: var(--spacing-lg) var(--spacing-xl);
  position: fixed;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  animation: fadeInUpCentered 1s ease-out 2s forwards;
}

/* Ensure JS can override the animation */
.scroll-to-vision.js-hidden {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
  animation: none !important;
  transform: translateX(-50%) translateY(20px) !important;
  transition: all var(--transition-base) !important;
}

.scroll-to-vision.js-visible {
  opacity: 1 !important;
  visibility: visible !important;
  pointer-events: auto !important;
  transform: translateX(-50%) translateY(0) !important;
  transition: all var(--transition-base) !important;
}

[data-theme="dark"] .scroll-to-vision {
  background: transparent;
}

.scroll-to-vision:hover {
  color: var(--color-secondary);
  transform: translateX(-50%) translateY(-2px);
}

.scroll-to-vision:hover .scroll-arrow {
  opacity: 1;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUpCentered {
  from {
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fadeInUp,
.animate-fadeInDown {
  animation-duration: 0.6s;
  animation-fill-mode: both;
  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-fadeInUp {
  animation-name: fadeInUp;
}

.animate-fadeInDown {
  animation-name: fadeInDown;
}

/* Main layout - improved grid structure */
.main-layout {
  display: block;
  min-height: 100vh;
  position: relative;
  width: 100%;
}

.content-main {
  transition: margin-right var(--transition-base);
  position: relative;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
}

.content-main.with-sidebar {
  margin-right: var(--sidebar-width);
}

/* Navigation - only sidebar mode (no bottom navigation) */
.elegant-nav {
  position: fixed;
  top: 0;
  right: 0;
  width: var(--sidebar-width);
  height: 100vh;
  z-index: 100;
  background: var(--color-bg);
  backdrop-filter: blur(20px);
  transition: all var(--transition-base);
  border-left: 1px solid var(--color-border);
  transform: translateX(100%); /* Hidden by default */
}

.elegant-nav.sidebar-mode {
  transform: translateX(0); /* Show when active */
}

/* Navigation visibility states */
.elegant-nav.hidden {
  transform: translateX(100%);
}

.nav-container {
  display: flex;
  align-items: stretch;
  justify-content: flex-start;
  flex-direction: column;
  height: 100%;
  padding: var(--spacing-2xl) 0;
  max-width: none;
  margin: 0;
}

/* Navigation brand - align with nav links */
.nav-brand {
  position: relative;
  margin-bottom: var(--spacing-xl);
  padding: 0 var(--spacing-md); /* Match nav-link padding */
  margin-left: var(--spacing-lg); /* Match nav-link margin */
  margin-right: var(--spacing-lg); /* Match nav-link margin */
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-lg);
}

.nav-brand-full {
  font-weight: var(--font-weight-black);
  font-size: 1.5rem;
  color: var(--color-text);
  font-variant: small-caps;
  letter-spacing: -0.02em;
}

.nav-brand-compact {
  display: none;
  font-weight: var(--font-weight-black);
  font-size: 1.2rem;
  color: var(--color-text);
  font-variant: small-caps;
}

/* Navigation links container with overflow handling */
.nav-links {
  display: flex;
  flex-direction: column;
  width: 100%;
  overflow: visible;
}

.nav-link {
  display: block;
  text-decoration: none;
  color: var(--color-text);
  font-weight: var(--font-weight-bold);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--spacing-lg) var(--spacing-md);
  margin: 0 var(--spacing-lg);
  position: relative;
  transition: all var(--transition-base);
  min-width: max-content;
  text-align: left;
  overflow: visible;
}

/* Remove all horizontal navigation styles since we only use sidebar */

/* Remove grey separators between navigation items */
.nav-link:not(:last-child)::after {
  display: none;
}

/* Elegant hover effects - horizontal underline */
.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--spacing-md);
  right: var(--spacing-md);
  height: 2px;
  background: var(--color-text);
  transform: scaleX(0);
  transition: transform var(--transition-base);
  transform-origin: left;
}

.nav-link:hover::before,
.nav-link:focus::before,
.nav-link.active::before {
  transform: scaleX(1);
}

/* Responsive navigation text - improved to prevent cropping */
.nav-text-full,
.nav-text-short,
.nav-text-letter {
  position: relative;
  z-index: 1;
  transition: opacity var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  display: inline-block;
  min-width: 0;
}

/* Navigation link sizing to accommodate text */
.nav-link {
  display: block;
  text-decoration: none;
  color: var(--color-text);
  font-weight: var(--font-weight-bold);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--spacing-lg) var(--spacing-md);
  margin: 0 var(--spacing-lg);
  position: relative;
  transition: all var(--transition-base);
  min-width: max-content;
  text-align: left;
}

/* Default: show full text */
.nav-text-short,
.nav-text-letter {
  display: none;
}

.nav-text-full {
  display: inline-block;
}

/* Large screens: ensure proper sizing for full text */
@media (min-width: 901px) {
  .nav-text-full {
    display: inline-block;
  }
  .nav-text-short,
  .nav-text-letter {
    display: none;
  }
  
  .nav-link {
    min-width: auto;
    width: auto;
  }
}

/* Medium screens: show short text with proper sizing */
@media (max-width: 900px) and (min-width: 651px) {
  .nav-text-full {
    display: none;
  }
  .nav-text-short {
    display: inline-block;
  }
  .nav-text-letter {
    display: none;
  }
  
  .nav-link {
    min-width: auto;
    width: auto;
    padding: var(--spacing-lg) var(--spacing-sm);
  }
}

/* Transition zone: prevent cropping between short and letter views */
@media (max-width: 650px) and (min-width: 601px) {
  .nav-text-full,
  .nav-text-short {
    display: none;
  }
  .nav-text-letter {
    display: inline-block;
    font-size: 1.1rem;
    font-weight: var(--font-weight-black);
    text-align: center;
    width: 100%;
  }
  
  .nav-link {
    min-width: 44px;
    width: auto;
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
  }
}

/* Small screens: show single letters with proper centering */
@media (max-width: 600px) {
  .nav-text-full,
  .nav-text-short {
    display: none;
  }
  .nav-text-letter {
    display: inline-block;
    font-size: 1.1rem;
    font-weight: var(--font-weight-black);
    text-align: center;
    width: 100%;
  }
  
  .nav-link {
    min-width: 44px;
    width: 44px;
    padding: var(--spacing-md) var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
  }
}
.content-block {
  padding: var(--spacing-4xl) var(--spacing-2xl);
  max-width: 800px;
  margin: 0 auto;
  background: var(--color-bg);
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

/* Content layout adjustments for sidebar mode */
.content-main.with-sidebar .content-block {
  max-width: calc(100vw - var(--sidebar-width) - var(--spacing-4xl));
  margin-left: var(--spacing-2xl);
  margin-right: var(--spacing-2xl);
}

/* Ensure proper spacing - no bottom padding needed */
.content-main {
  position: relative;
  width: 100%;
  overflow-x: hidden;
}

.content-main.with-sidebar {
  margin-right: var(--sidebar-width);
  padding-right: var(--spacing-lg); /* Space for dark mode toggle */
}

/* Ensure content doesn't overlap with dark mode toggle */
.content-block h1,
.content-block h2 {
  padding-right: 80px; /* Reserve space for toggle on large screens */
}

/* Better content wrapping */
.content-block * {
  max-width: 100%;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.content-block h1,
.content-block h2,
.content-block h3 {
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

.content-block h1 {
  font-size: 2.5rem;
  font-weight: var(--font-weight-black);
}

.content-block h2 {
  font-size: 2rem;
}

.content-block h3 {
  font-size: 1.5rem;
}

.content-block p {
  margin-bottom: var(--spacing-lg);
  color: var(--color-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
}

.content-block ul,
.content-block ol {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-xl);
}

.content-block li {
  margin-bottom: var(--spacing-sm);
  color: var(--color-secondary);
}

/* Footer */
footer {
  padding: var(--spacing-3xl) var(--spacing-lg);
  text-align: center;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: var(--font-weight-medium);
  position: relative;
  margin-top: var(--spacing-4xl);
}

/* Elegant footer separator */
footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(200px, 50vw);
  height: 1px;
  background: var(--color-text);
  opacity: 0.8;
}

/* Responsive design */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 280px;
  }
  
  .content-block {
    padding: var(--spacing-3xl) var(--spacing-lg);
  }
  
  #hero {
    padding-right: calc(var(--spacing-lg) + 60px);
  }
}

@media (max-width: 900px) {
  :root {
    --sidebar-width: 240px;
  }
  
  /* Show compact brand text */
  .nav-brand-full {
    display: none;
  }
  .nav-brand-compact {
    display: inline;
  }
}

@media (max-width: 768px) {
  :root {
    --sidebar-width: 100%;
  }
  
  #hero {
    padding-right: var(--spacing-lg);
  }
  
  .elegant-nav {
    width: 100%;
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    border-left: none;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%); /* Hide at top instead of right */
  }
  
  .elegant-nav.sidebar-mode {
    transform: translateY(0); /* Show by sliding down */
  }
  
  .nav-container {
    flex-direction: row;
    padding: var(--spacing-md) var(--spacing-lg);
    justify-content: flex-start;
    align-items: center;
    height: 100%;
  }
  
  .nav-brand {
    margin-bottom: 0;
    margin-right: var(--spacing-lg);
    padding: 0;
    border-bottom: none;
    padding-bottom: 0;
  }
  
  .nav-brand-full {
    display: inline; /* Show full "openemage" on mobile */
    font-size: 1.2rem;
  }
  
  .nav-brand-compact {
    display: none;
  }
  
  .nav-links {
    flex-direction: row;
    overflow-x: auto;
    gap: 0;
    justify-content: center;
    align-items: center;
  }
  
  .nav-link {
    margin: 0;
    padding: var(--spacing-md);
    white-space: nowrap;
    min-width: auto;
    flex-shrink: 0;
  }
  
  .nav-link:not(:last-child)::after {
    display: none; /* Remove grey separators */
  }
  
  .content-main.with-sidebar {
    margin-right: 0;
    padding-top: var(--header-height);
  }
  
  .content-main.with-sidebar .content-block {
    margin-left: var(--spacing-md);
    max-width: none;
    padding-top: var(--spacing-2xl); /* Extra padding to prevent overlap */
  }
  
  .content-block {
    padding: var(--spacing-2xl) var(--spacing-md);
    margin: 0 var(--spacing-md);
  }
  
  .theme-toggle {
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
  }
  
  /* Medium screen footer adjustments */
  footer::before {
    width: min(180px, 45vw);
  }
}

@media (max-width: 600px) {
  .nav-link {
    padding: var(--spacing-md) var(--spacing-sm);
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    flex-shrink: 0;
  }
  
  /* Keep full brand name on small screens */
  .nav-brand-full {
    display: inline;
    font-size: 1.1rem;
  }
  .nav-brand-compact {
    display: none;
  }
  
  /* Remove padding for toggle overlap prevention on small screens */
  .content-block h1,
  .content-block h2 {
    padding-right: 0;
  }
  
  /* Ensure navigation text is properly centered */
  .nav-text-letter {
    display: inline-block;
    font-size: 1.1rem;
    font-weight: var(--font-weight-black);
    text-align: center;
    width: 100%;
  }
}

@media (max-width: 480px) {
  .content-block {
    margin: 0 var(--spacing-sm);
    padding: var(--spacing-xl) var(--spacing-sm);
  }
  
  .content-main.with-sidebar .content-block {
    margin-left: var(--spacing-sm);
    margin-right: var(--spacing-sm);
    max-width: calc(100vw - var(--spacing-md));
  }
  
  .theme-toggle {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  
  .nav-link {
    padding: var(--spacing-sm);
    min-width: 40px;
  }
  
  .nav-brand-full {
    font-size: 1rem;
  }
  
  /* Responsive footer separator */
  footer::before {
    width: min(150px, 40vw);
  }
  
  footer {
    padding: var(--spacing-2xl) var(--spacing-sm);
    font-size: 0.8rem;
  }

  /* Adjust scroll button for mobile */
  .scroll-to-vision {
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.8rem;
  }
  
  .scroll-to-vision:hover {
    transform: translateX(-50%) translateY(-2px);
  }
}