:root {
  /* Color Palette - Cyber/Space Theme */
  --bg-dark: #050505;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.1);
  --text-main: #ffffff;
  --text-muted: #a0a0a0;

  /* Neon Accents */
  --neon-cyan: #00f3ff;
  --neon-purple: #bc13fe;
  --neon-orange: #00f3ff;
  /* Changed to cyan to match theme */

  /* Gradients */
  --gradient-main: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  --gradient-glow: radial-gradient(circle at center, rgba(188, 19, 254, 0.2) 0%, transparent 70%);

  /* Glassmorphism */
  --glass-border: 1px solid rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --backdrop-blur: blur(12px);

  /* Typography */
  --font-main: 'Inter', sans-serif;
  --font-display: 'Orbitron', sans-serif;

  /* Spacing */
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
}

/* Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Typography */
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  background: var(--gradient-main);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 30px rgba(0, 243, 255, 0.3);
  line-height: 1.1;
}

h2 {
  font-size: 2.5rem;
  color: var(--neon-cyan);
  border-bottom: 2px solid var(--neon-purple);
  display: inline-block;
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.5rem;
  color: var(--neon-orange);
}

p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

a {
  color: var(--neon-cyan);
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
}

a:hover {
  color: var(--neon-purple);
  text-shadow: 0 0 10px var(--neon-purple);
}

/* Layout Utilities */
.wrapper {
  position: relative;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.section-spacer {
  height: var(--spacing-lg);
}

/* Hero Section */
header {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-image: url('imgs/f4k.jpeg');
  background-size: cover;
  background-position: center;
  filter: brightness(0.4);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
  opacity: 0.7;
}

.scroll-indicator i {
  font-size: 2rem;
  color: var(--neon-cyan);
}

@keyframes bounce {

  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  40% {
    transform: translateX(-50%) translateY(-10px);
  }

  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* Glass Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: var(--glass-border);
  border-radius: 16px;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--glass-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  overflow: hidden;
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px 0 rgba(0, 243, 255, 0.1);
  border-color: rgba(0, 243, 255, 0.3);
  background: var(--bg-card-hover);
}

/* Project Toggle Button */
.toggle-button {
  background: transparent;
  border: none;
  color: var(--text-main);
  width: 100%;
  text-align: left;
  padding: 1rem 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.3s ease;
}

.toggle-button:hover {
  color: var(--neon-cyan);
  text-shadow: 0 0 8px var(--neon-cyan);
}

.toggle-button i {
  transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.toggle-button.active i {
  transform: rotate(180deg);
  color: var(--neon-purple);
}

/* Content Section */
.content-section {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0, 1, 0, 1);
  opacity: 0;
}

.content-section.open {
  max-height: 5000px;
  /* Arbitrary large number */
  opacity: 1;
  transition: max-height 0.8s ease-in-out, opacity 0.5s ease-in;
  padding-top: var(--spacing-sm);
}

/* Images */
.responsive-img,
.responsive-img-big,
.responsive-img-full {
  width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 1rem 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  transition: transform 0.3s ease;
}

.responsive-img:hover,
.responsive-img-big:hover,
.responsive-img-full:hover {
  transform: scale(1.02);
}

.responsive-img {
  max-width: 400px;
}

.responsive-img-big {
  max-width: 800px;
}

/* CV Table */
.cv-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0 10px;
}

.cv-label {
  color: var(--neon-cyan);
  font-weight: bold;
  padding: 10px;
  border-left: 3px solid var(--neon-purple);
  background: rgba(255, 255, 255, 0.03);
  width: 30%;
  vertical-align: top;
  border-radius: 8px 0 0 8px;
}

.cv-value {
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 0 8px 8px 0;
}

/* Badges & Links */
.link-button {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  background: transparent;
  border: 1px solid var(--neon-cyan);
  color: var(--neon-cyan);
  border-radius: 30px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 1rem;
  transition: all 0.3s ease;
}

.link-button:hover {
  background: var(--neon-cyan);
  color: #000;
  box-shadow: 0 0 20px var(--neon-cyan);
  text-decoration: none;
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.8s ease forwards;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2rem;
  }

  .cv-table,
  .cv-table tbody,
  .cv-table tr,
  .cv-table td {
    display: block;
    width: 100%;
  }

  .cv-label {
    width: 100%;
    border-left: 3px solid var(--neon-purple);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    margin-bottom: 0;
  }

  .cv-value {
    width: 100%;
    border-radius: 0 0 8px 8px;
    margin-bottom: 10px;
  }

  .wrapper {
    padding: 0 1rem;
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: #333;
  border-radius: 5px;
  border: 1px solid var(--glass-border);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--neon-purple);
}