:root {
  /* Color Palette - Deep Blue & Vibrant Accents */
  --bg-primary: #0a192f;
  --bg-secondary: #112240;
  --text-primary: #e6f1ff;
  --text-secondary: #8892b0;
  --accent-primary: #64ffda;
  /* Teal/Cyan */
  --accent-secondary: #00b4d8;
  /* Blue */
  --glass-bg: rgba(17, 34, 64, 0.95);
  --glass-border: rgba(230, 241, 255, 0.1);
  --shadow-soft: 0 10px 30px -10px rgba(2, 12, 27, 0.7);
  --transition-speed: 0.3s;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Animated Background */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(100, 255, 218, 0.05), transparent 60%),
    radial-gradient(circle at 10% 10%, rgba(0, 180, 216, 0.05), transparent 50%),
    radial-gradient(circle at 90% 90%, rgba(100, 255, 218, 0.05), transparent 50%);
  z-index: -1;
  animation: bgPulse 15s ease-in-out infinite alternate;
}

@keyframes bgPulse {
  0% {
    transform: scale(1);
    opacity: 0.5;
  }

  100% {
    transform: scale(1.2);
    opacity: 0.8;
  }
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-primary);
  color: var(--bg-primary);
  padding: 8px;
  z-index: 2000;
  transition: top 0.3s;
  font-weight: bold;
}

.skip-link:focus {
  top: 0;
}

ul {
  list-style: none;
}

/* Header & Nav */
header {
  background: rgba(10, 25, 47, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 1200px;
}

h1 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: -0.5px;
}

.language-switcher {
  display: flex;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.language-switcher a {
  color: var(--text-secondary);
  font-weight: 500;
}

.language-switcher a:hover,
.language-switcher a.active {
  color: var(--accent-primary);
}

header>p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.main-nav {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.main-nav a {
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 500;
  position: relative;
  padding-bottom: 5px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--accent-primary);
  transition: width var(--transition-speed);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--accent-primary);
}

/* Accessibility Controls */
.accessibility-controls {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 99999 !important;
  display: block !important;
}

#daltonicMode {
  background: linear-gradient(135deg, rgba(17, 34, 64, 0.95), rgba(10, 25, 47, 0.95));
  color: var(--accent-primary);
  border: 2px solid var(--accent-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 24px rgba(100, 255, 218, 0.2),
    0 4px 8px rgba(2, 12, 27, 0.5);
  opacity: 1 !important;
  visibility: visible !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
  text-shadow: 0 0 20px rgba(100, 255, 218, 0.5);
}

#daltonicMode::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(100, 255, 218, 0.3), transparent);
  transition: left 0.5s;
}

#daltonicMode:hover::before {
  left: 100%;
}

#daltonicMode:hover {
  background: linear-gradient(135deg, rgba(100, 255, 218, 0.15), rgba(0, 180, 216, 0.15));
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 32px rgba(100, 255, 218, 0.35),
    0 6px 12px rgba(2, 12, 27, 0.6);
  border-color: #64ffda;
  text-shadow: 0 0 30px rgba(100, 255, 218, 0.8);
}

#daltonicMode:active {
  transform: translateY(-1px) scale(0.98);
}

/* Accessibility Panel */
.accessibility-panel {
  position: fixed;
  bottom: 80px;
  right: 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 15px;
  padding: 1.5rem;
  width: 300px;
  box-shadow: var(--shadow-soft);
  z-index: 100000;
  display: none;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s, transform 0.3s;
}

.accessibility-panel.visible {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 0.5rem;
}

.panel-header h3 {
  font-size: 1.1rem;
  color: var(--accent-primary);
  margin: 0;
}

.close-panel {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.2rem;
  transition: color var(--transition-speed);
}

.close-panel:hover {
  color: var(--accent-primary);
}

.control-group {
  margin-bottom: 1.5rem;
}

.control-group:last-child {
  margin-bottom: 0;
}

.control-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
}

.value-display {
  color: var(--accent-primary);
  font-family: monospace;
}

.mode-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.mode-btn {
  background: rgba(100, 255, 218, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  padding: 0.5rem;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all var(--transition-speed);
}

.mode-btn:hover,
.mode-btn.active {
  background: rgba(100, 255, 218, 0.15);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

input[type="range"] {
  width: 100%;
  height: 6px;
  background: var(--bg-secondary);
  border-radius: 3px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent-primary);
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Accessibility Overlay */
#accessibility-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 99998;
  mix-blend-mode: multiply;
  transition: opacity 0.3s;
}

#accessibility-overlay.protanopia {
  background-color: rgba(255, 240, 200, 0.5);
  /* Warm filter */
}

#accessibility-overlay.deuteranopia {
  background-color: rgba(240, 255, 240, 0.5);
  /* Greenish filter correction */
}

#accessibility-overlay.tritanopia {
  background-color: rgba(255, 220, 220, 0.5);
  /* Reddish filter correction */
}

/* Main Content */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

section {
  margin-bottom: 5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

h2 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: 2rem;
  position: relative;
  display: inline-block;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2::after {
  content: '';
  position: absolute;
  width: 60%;
  height: 4px;
  bottom: -10px;
  left: 0;
  background: linear-gradient(90deg, var(--accent-primary), transparent);
  border-radius: 2px;
}

/* About Section */
.profile-container {
  display: flex;
  align-items: center;
  gap: 3rem;
  background: var(--glass-bg);
  padding: 2rem;
  border-radius: 15px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-soft);
}

.profile-image {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent-primary);
  box-shadow: 0 0 20px rgba(100, 255, 218, 0.3);
}

.about-content p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--bg-secondary);
  border-radius: 10px;
  padding: 1.5rem;
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  border: 1px solid transparent;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-soft);
  border-color: var(--accent-primary);
}

.project-title h3 {
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.project-image,
.project-video {
  width: 100%;
  border-radius: 5px;
  margin-bottom: 1rem;
  border: 1px solid var(--glass-border);
}

.collapsible {
  background-color: transparent;
  color: var(--accent-primary);
  cursor: pointer;
  padding: 0.5rem 0;
  width: 100%;
  text-align: left;
  border: none;
  outline: none;
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.collapsible:after {
  content: '+';
  font-size: 1.2rem;
  margin-left: auto;
}

.collapsible.active:after {
  content: '-';
}

.content {
  padding: 0 1rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  background-color: rgba(2, 12, 27, 0.3);
  border-radius: 5px;
  margin-bottom: 1rem;
}

.content p {
  margin: 1rem 0;
  color: var(--text-secondary);
}

.project-details h4 {
  color: var(--accent-secondary);
  margin-bottom: 0.5rem;
  font-family: var(--font-heading);
}

.project-details ul {
  list-style: disc;
  margin-left: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.project-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--accent-primary);
  font-weight: 600;
  border: 1px solid var(--accent-primary);
  padding: 0.5rem 1rem;
  border-radius: 5px;
  transition: all var(--transition-speed);
}

.project-link:hover {
  background-color: rgba(100, 255, 218, 0.1);
}

/* Skills & Achievements */
.skills-grid,
.achievements-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.skill-card,
.achievement-item {
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 8px;
  border-left: 4px solid var(--accent-primary);
  transition: transform var(--transition-speed);
}

.skill-card:hover,
.achievement-item:hover {
  transform: translateX(5px);
  background: rgba(17, 34, 64, 0.9);
}

.skill-card h3,
.achievement-item h3 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-family: var(--font-heading);
}

.skill-card ul,
.achievement-item p {
  color: var(--text-secondary);
}

.skill-card li {
  margin-bottom: 0.3rem;
  position: relative;
  padding-left: 1.2rem;
}

.skill-card li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
}

/* Contact Page */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-card {
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--glass-border);
}

.contact-card h3 {
  color: var(--accent-secondary);
  margin-bottom: 1rem;
  font-family: var(--font-heading);
  font-size: 1.1rem;
}

.contact-list {
  list-style: none;
}

.contact-list li {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-secondary);
  font-size: 1rem;
}

.contact-list .icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--accent-primary);
}

.contact-list .icon svg {
  width: 20px;
  height: 20px;
  stroke-width: 2;
}

.contact-list a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-speed);
  font-weight: 500;
}

.contact-list a:hover {
  color: var(--accent-primary);
  text-decoration: none;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.social-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(100, 255, 218, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: 5px;
  color: var(--text-primary);
  transition: all var(--transition-speed);
}

.social-btn:hover {
  background: rgba(100, 255, 218, 0.1);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-2px);
}

.social-btn svg {
  width: 18px;
  height: 18px;
}

.contact-form {
  background: var(--glass-bg);
  padding: 2rem;
  border-radius: 15px;
  border: 1px solid var(--glass-border);
}

.contact-form h3 {
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  font-family: var(--font-heading);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem;
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: 5px;
  color: var(--text-primary);
  font-family: var(--font-body);
  transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.submit-button {
  background: transparent;
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  padding: 1rem 2rem;
  border-radius: 5px;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-speed);
  width: 100%;
  font-family: var(--font-heading);
  font-weight: 600;
}

.submit-button:hover {
  background: rgba(100, 255, 218, 0.1);
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 3rem;
  border-top: 1px solid var(--glass-border);
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--bg-secondary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .header-top {
    max-width: 90%;
  }

  main {
    padding: 2rem;
  }
}

@media (max-width: 768px) {
  .header-top {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  h1 {
    font-size: 1.5rem;
  }

  .main-nav {
    gap: 1rem;
    font-size: 0.9rem;
  }

  .profile-container {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem;
  }

  .profile-image {
    width: 150px;
    height: 150px;
  }

  .contact-container {
    grid-template-columns: 1fr;
  }

  h2 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  header {
    padding: 1rem;
  }

  .main-nav {
    gap: 0.8rem;
  }

  .main-nav a {
    font-size: 0.85rem;
  }

  section {
    margin-bottom: 3rem;
  }

  .project-card,
  .skill-card,
  .achievement-item,
  .contact-card,
  .contact-form {
    padding: 1rem;
  }

  .accessibility-controls {
    bottom: 15px;
    right: 15px;
  }

  #daltonicMode {
    padding: 0.6rem 1.2rem;
    font-size: 0.85rem;
  }
}

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

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

@media (max-width: 480px) {
  .accessibility-panel {
    width: calc(100% - 40px);
    right: 20px;
    left: 20px;
    bottom: 70px;
  }
}