/* Tokyo Night Theme - AI Engineering Website */

:root {
  /* Tokyo Night Color Palette */
  --tn-bg-primary: #1a1b26;
  --tn-bg-secondary: #24283b;
  --tn-bg-tertiary: #414868;
  --tn-bg-float: #16161e;
  --tn-bg-highlight: #292e42;
  
  /* Text Colors */
  --tn-text-primary: #c0caf5;
  --tn-text-secondary: #a9b1d6;
  --tn-text-muted: #565f89;
  --tn-text-dark: #414868;
  
  /* Accent Colors */
  --tn-blue: #7aa2f7;
  --tn-cyan: #7dcfff;
  --tn-teal: #73daca;
  --tn-green: #9ece6a;
  --tn-yellow: #e0af68;
  --tn-orange: #ff9e64;
  --tn-red: #f7768e;
  --tn-purple: #bb9af7;
  --tn-magenta: #c678dd;
  
  /* Gradients */
  --tn-gradient-primary: linear-gradient(135deg, var(--tn-blue) 0%, var(--tn-purple) 100%);
  --tn-gradient-secondary: linear-gradient(135deg, var(--tn-cyan) 0%, var(--tn-teal) 100%);
  --tn-gradient-accent: linear-gradient(135deg, var(--tn-orange) 0%, var(--tn-yellow) 100%);
  
  /* Shadows */
  --tn-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --tn-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --tn-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --tn-shadow-glow: 0 0 20px rgba(122, 162, 247, 0.3);
  
  /* Animation timings */
  --tn-transition-fast: 0.2s ease;
  --tn-transition-normal: 0.3s ease;
  --tn-transition-slow: 0.5s ease;
}

/* Global Styles */
* {
  box-sizing: border-box;
}

body {
  background: var(--tn-bg-primary);
  color: var(--tn-text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--tn-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--tn-blue);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--tn-cyan);
}

/* Text Selection */
::selection {
  background: var(--tn-blue);
  color: var(--tn-bg-primary);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(122, 162, 247, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(122, 162, 247, 0.6);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Header Styles */
.header {
  background: rgba(26, 27, 38, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--tn-bg-secondary);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--tn-transition-normal);
}

.header.scrolled {
  background: rgba(26, 27, 38, 0.98);
  box-shadow: var(--tn-shadow-md);
}

.header__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--tn-text-primary);
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  transition: var(--tn-transition-fast);
  white-space: nowrap;
}

.header__logo:hover {
  color: var(--tn-blue);
}

.header__logo img,
.header__logo svg {
  width: 32px;
  height: 32px;
  transition: var(--tn-transition-fast);
}

.header__logo:hover img,
.header__logo:hover svg {
  transform: scale(1.1);
}

/* Navigation */
.menu__list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 2rem;
}

.menu__link {
  color: var(--tn-text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  position: relative;
  transition: var(--tn-transition-fast);
}

.menu__link:hover,
.menu__link.active {
  color: var(--tn-blue);
  background: rgba(122, 162, 247, 0.1);
}

.menu__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--tn-blue);
  transition: var(--tn-transition-fast);
  transform: translateX(-50%);
}

.menu__link:hover::after,
.menu__link.active::after {
  width: 80%;
}

/* Mobile Navigation */
.menu__icon {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 0.5rem;
  background: none;
  border: none;
}

.menu__icon span,
.menu__icon span::before,
.menu__icon span::after {
  width: 24px;
  height: 2px;
  background: var(--tn-text-primary);
  transition: var(--tn-transition-fast);
  position: relative;
  transform-origin: center;
}

.menu__icon span::before,
.menu__icon span::after {
  content: '';
  position: absolute;
  left: 0;
}

.menu__icon span::before {
  top: -8px;
}

.menu__icon span::after {
  top: 8px;
}

/* Hamburger Animation */
.menu-open .menu__icon span {
  background: transparent;
}

.menu-open .menu__icon span::before {
  transform: rotate(45deg);
  top: 0;
}

.menu-open .menu__icon span::after {
  transform: rotate(-45deg);
  top: 0;
}

/* Mobile Navigation Responsive */
@media (max-width: 768px) {
  .header__container {
    padding: 0 1rem;
    min-height: 70px;
  }
  
  .header__logo {
    font-size: 1.3rem;
  }
  
  .header__logo img,
  .header__logo svg {
    width: 28px;
    height: 28px;
  }
  
  .menu__icon {
    display: flex;
  }
  
  .menu__list {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: calc(100vh - 70px);
    background: rgba(26, 27, 38, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: flex-start;
    padding: 2rem;
    gap: 1rem;
    transform: translateX(-100%);
    transition: var(--tn-transition-normal);
    border-right: 1px solid var(--tn-bg-tertiary);
  }
  
  .menu__list.active {
    transform: translateX(0);
  }
  
  .menu__link {
    padding: 1rem;
    font-size: 1.1rem;
    border-radius: 12px;
    width: 100%;
    text-align: center;
  }
  
  .menu__link::after {
    display: none;
  }
  
  .cube-container {
    margin-top: auto;
    padding-top: 2rem;
  }
}

@media (max-width: 480px) {
  .header__container {
    padding: 0 0.5rem;
  }
  
  .header__logo {
    font-size: 1.1rem;
  }
  
  .header__logo span {
    display: none;
  }
}

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background: var(--tn-gradient-primary);
  color: white;
  text-decoration: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--tn-transition-normal);
  position: relative;
  overflow: hidden;
}

.button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--tn-transition-slow);
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: var(--tn-shadow-glow);
}

.button:hover::before {
  left: 100%;
}

.button--secondary {
  background: transparent;
  color: var(--tn-blue);
  border: 2px solid var(--tn-blue);
}

.button--secondary:hover {
  background: var(--tn-blue);
  color: white;
}

/* Typography */
.title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: var(--tn-gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 1.2rem;
  color: var(--tn-text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

/* Cards */
.card {
  background: var(--tn-bg-secondary);
  border-radius: 16px;
  padding: 2rem;
  border: 1px solid var(--tn-bg-tertiary);
  transition: var(--tn-transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--tn-gradient-secondary);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--tn-shadow-lg);
  border-color: var(--tn-blue);
}

/* Sections */
.section {
  padding: 6rem 0;
  position: relative;
}

.section--dark {
  background: var(--tn-bg-float);
}

.section__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Hero Section Universal Styles */
.main_pages {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--tn-bg-primary);
  padding: 120px 0 80px;
}

.main_pages::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(122, 162, 247, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(187, 154, 247, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(125, 207, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.main__container_pages {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 2;
  text-align: center;
}

.main__image {
  width: 100%;
  max-width: 500px;
  height: 280px;
  margin: 0 auto 3rem;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  box-shadow: var(--tn-shadow-lg);
  background: var(--tn-bg-secondary);
}

.main__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: var(--tn-transition-slow);
  filter: brightness(0.9) contrast(1.1);
}

.main__image:hover img {
  transform: scale(1.05);
  filter: brightness(1) contrast(1.2);
}

.main__title {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: var(--tn-gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease forwards;
}

.main__text_pages {
  font-size: 1.3rem;
  color: var(--tn-text-secondary);
  margin-bottom: 3rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
  animation: fadeInUp 0.8s ease 0.2s forwards;
  opacity: 0;
}

/* Outro Section Universal Styles */
.outro {
  padding: 6rem 0;
  background: var(--tn-bg-primary);
  position: relative;
  overflow: hidden;
}

.outro::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 30% 70%, rgba(122, 162, 247, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(187, 154, 247, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.outro__image {
  display: none; /* Hide problematic background images */
}

.outro__image_half {
  display: none; /* Hide problematic background images */
}

.outro__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.outro__title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: var(--tn-gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
  line-height: 1.2;
}

.outro__text {
  font-size: 1.2rem;
  color: var(--tn-text-secondary);
  max-width: 600px;
  line-height: 1.6;
  margin-bottom: 2rem;
  text-align: center;
}

.outro__button {
  font-size: 1.1rem;
  padding: 1.2rem 2.5rem;
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: 2rem;
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.text-gradient {
  background: var(--tn-gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.animate-fade-in {
  animation: fadeInUp 0.8s ease forwards;
  opacity: 0;
}

.animate-slide-in {
  animation: slideInRight 0.8s ease forwards;
  opacity: 0;
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

.animate-glow {
  animation: glow 2s ease-in-out infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
  .header__container {
    padding: 0 1rem;
    min-height: 70px;
  }
  
  .menu__list {
    gap: 1rem;
  }
  
  .section {
    padding: 4rem 0;
  }
  
  .section__container {
    padding: 0 1rem;
  }
  
  .title {
    font-size: 2.5rem;
  }
}