/* ========== CSS Variables ========== */
:root {
  --primary-color: #00d4ff;
  --secondary-color: #f39c12;
  --accent-color: #e74c3c;
  --bg-dark: #0f0f0f;
  --bg-light: #1a1a1a;
  --bg-card: #141414;
  --text-primary: #f5f5f5;
  --text-secondary: #b0b0b0;
  --gradient-1: linear-gradient(135deg, #00d4ff, #007a99);
  --gradient-2: linear-gradient(135deg, #f39c12, #e67e22);
  --gradient-3: linear-gradient(135deg, #1a1a1a, #2c3e50);
  --shadow: 0 5px 20px rgba(0, 212, 255, 0.3);
  --shadow-hover: 0 10px 40px rgba(0, 212, 255, 0.5);
  --transition: all 0.3s ease;
}

/* Light Mode Variables */
body.light-mode {
  --bg-dark: #ffffff;
  --bg-light: #f8f9fa;
  --bg-card: #ffffff;
  --text-primary: #1a1a1a;
  --text-secondary: #6c757d;
  --shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 10px 40px rgba(0, 0, 0, 0.15);
}

/* ========== General Styles ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Poppins', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: var(--transition);
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.2;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== Navbar ========== */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(20, 20, 20, 0.95);
  backdrop-filter: blur(10px);
  padding: 15px 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  transition: var(--transition);
}

body.light-mode .navbar {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  cursor: pointer;
  transition: var(--transition);
}

.logo:hover {
  transform: scale(1.05);
}

.logo span {
  color: var(--secondary-color);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}

.nav-menu li a {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 1rem;
  position: relative;
  padding: 5px 0;
}

.nav-menu li a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  left: 0;
  bottom: 0;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.nav-menu li a:hover::after {
  width: 100%;
}

.theme-toggle {
  background: none;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  padding: 8px 16px;
  border-radius: 25px;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition);
}

.theme-toggle:hover {
  background: var(--primary-color);
  color: white;
  transform: scale(1.05);
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--primary-color);
  transition: var(--transition);
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ========== Hero Section ========== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-3);
  background-image: url('image3.avif');
  background-size: cover;
  background-position: center;
  padding: 120px 20px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(0, 212, 255, 0.1), transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 0.5;
  }

  50% {
    opacity: 1;
  }
}

.hero-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.hero-image {
  flex: 1;
  min-width: 300px;
  display: flex;
  justify-content: center;
}

.hero-image img {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 5px solid var(--primary-color);
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.6);
  object-fit: cover;
  animation: float 3s ease-in-out infinite;
  transition: var(--transition);
}

.hero-image img:hover {
  transform: scale(1.05);
  box-shadow: 0 0 60px rgba(0, 212, 255, 0.8);
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-20px);
  }
}

.hero-text {
  flex: 1;
  min-width: 300px;
}

.hero-text h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  animation: slideInLeft 0.8s ease;
}

.hero-text h1 .typing {
  color: var(--primary-color);
  border-right: 3px solid var(--primary-color);
  padding-right: 5px;
  white-space: nowrap;
  display: inline-block;
}

.hero-text .subtitle {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  color: var(--text-secondary);
  animation: slideInLeft 1s ease;
}

.hero-text .location {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  color: var(--text-secondary);
  animation: slideInLeft 1.2s ease;
}

.cta-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  animation: slideInLeft 1.4s ease;
}

.scroll-down {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-down a {
  color: var(--primary-color);
  font-size: 2rem;
}

@keyframes bounce {

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }

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

/* ========== Buttons ========== */
.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn.primary {
  background: var(--gradient-1);
  color: white;
  box-shadow: 0 5px 15px rgba(0, 212, 255, 0.3);
}

.btn.primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.btn.secondary {
  background: var(--gradient-2);
  color: white;
  box-shadow: 0 5px 15px rgba(243, 156, 18, 0.3);
}

.btn.secondary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(243, 156, 18, 0.5);
}

.btn.tertiary {
  background: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

.btn.tertiary:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-3px);
}

.btn-small {
  padding: 8px 20px;
  font-size: 0.9rem;
}

.btn.github {
  background: #333;
  color: white;
}

.btn.github:hover {
  background: #24292e;
  transform: translateY(-2px);
}

/* ========== Sections ========== */
.section {
  padding: 80px 20px;
}

.bg-dark {
  background: var(--bg-light);
}

.section-title {
  font-size: 2.8rem;
  text-align: center;
  margin-bottom: 3rem;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--primary-color);
  border-radius: 2px;
}

/* ========== About Section ========== */
.about-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-top: 3rem;
}

.stat-card {
  background: var(--bg-card);
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
}

.stat-card i {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.stat-card h3 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.stat-card p {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ========== Skills Section ========== */
.skills-container {
  display: grid;
  gap: 40px;
}

.skill-category h3 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
}

.skill-card {
  background: var(--bg-card);
  padding: 25px;
  border-radius: 15px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.skill-card:hover {
  transform: translateY(-10px) scale(1.03);
  box-shadow: var(--shadow-hover);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(243, 156, 18, 0.1));
}

.skill-card i {
  font-size: 3rem;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.skill-card span {
  font-size: 1rem;
  font-weight: 500;
}

/* ========== Projects Section ========== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.project-card {
  background: var(--bg-card);
  border-radius: 20px;
  padding: 30px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
  transition: var(--transition);
}

.project-card:hover::before {
  left: 100%;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-color);
}

.project-icon {
  font-size: 3rem;
  margin-bottom: 15px;
}

.project-card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.project-card p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.tech-tag {
  background: rgba(0, 212, 255, 0.1);
  color: var(--primary-color);
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--primary-color);
}

.project-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.project-links .btn {
  position: relative;
  overflow: hidden;
}

.project-links .btn::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: left 0.5s ease;
}

.project-links .btn:hover::before {
  left: 100%;
}

.project-links .btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.5);
}

.project-links .btn.github:hover {
  box-shadow: 0 10px 30px rgba(51, 51, 51, 0.5);
}

/* ========== Vision Section ========== */
.vision-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}

.vision-card {
  background: var(--bg-card);
  padding: 40px 30px;
  border-radius: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 2px solid transparent;
}

.vision-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-color);
}

.vision-icon {
  font-size: 4rem;
  color: var(--primary-color);
  margin-bottom: 20px;
  display: block;
}

.vision-card h3 {
  font-size: 1.8rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.vision-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== Donation Section ========== */

.donation-section {
  position: relative;
  padding: 80px 20px;
  background: var(--bg-light);
}

.donation-container {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.donation-title {
  font-size: 2.6rem;
  background: var(--gradient-1);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 15px;
}

.donation-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 40px;
}

/* Card */

.donation-card {
  background: var(--bg-card);
  padding: 45px 35px;
  border-radius: 25px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid rgba(0,212,255,0.2);
}

.donation-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
}

/* Icon */

.coffee-icon {
  font-size: 4rem;
  margin-bottom: 20px;
  color: var(--primary-color);
}

/* Message */

.donation-message {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 30px;
}

.donation-message strong {
  color: var(--primary-color);
}

/* Button */

.coffee-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 35px;
  background: var(--gradient-2);
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 40px;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 8px 25px rgba(243,156,18,0.4);
}

.coffee-btn:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 12px 35px rgba(243,156,18,0.6);
}

/* Stats */

.donation-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(150px,1fr));
  gap: 20px;
  margin-top: 40px;
}

.stat-item {
  background: rgba(0,212,255,0.05);
  padding: 20px;
  border-radius: 15px;
  transition: var(--transition);
}

.stat-item:hover {
  background: rgba(0,212,255,0.1);
  transform: scale(1.05);
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Support Message */

.supporters-message {
  margin-top: 30px;
  padding: 20px;
  background: rgba(243,156,18,0.1);
  border-radius: 15px;
  border-left: 4px solid var(--secondary-color);
  color: var(--text-secondary);
}

/* Responsive */

@media (max-width: 768px) {
  .donation-title {
    font-size: 2.1rem;
  }

  .donation-card {
    padding: 35px 25px;
  }

  .coffee-btn {
    padding: 14px 28px;
    font-size: 1rem;
  }
}

    /* Responsive Design */
    @media (max-width: 768px) {
      .donation-title {
        font-size: 2.2rem;
      }

      .donation-card {
        padding: 40px 25px;
      }

      .coffee-icon {
        font-size: 4rem;
      }

      .coffee-btn {
        padding: 15px 30px;
        font-size: 1.1rem;
      }

      .donation-stats {
        grid-template-columns: 1fr;
      }
    }

/* ========== Contact Section ========== */
.contact-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-card {
  background: var(--bg-card);
  padding: 40px 30px;
  border-radius: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.contact-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
}

.contact-card i {
  font-size: 3.5rem;
  margin-bottom: 15px;
  display: block;
}

.contact-card h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.contact-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.contact-card.linkedin:hover {
  border-color: #0077b5;
}

.contact-card.linkedin:hover i {
  color: #0077b5;
}

.contact-card.github:hover {
  border-color: #333;
}

.contact-card.github:hover i {
  color: #333;
}

.contact-card.instagram:hover {
  border-color: #e1306c;
}

.contact-card.instagram:hover i {
  color: #e1306c;
}

.contact-card.email:hover {
  border-color: #d44638;
}

.contact-card.email:hover i {
  color: #d44638;
}

/* ========== Footer ========== */
footer {
  background: var(--bg-card);
  padding: 40px 20px;
  text-align: center;
  border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.footer-content p {
  color: var(--text-secondary);
  margin-bottom: 15px;
  font-size: 1rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-color);
}

/* ========== Back to Top Button ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--primary-color);
  color: white;
  border: none;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: var(--transition);
  opacity: 0;
  visibility: hidden;
  z-index: 999;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

/* ========== Animations ========== */
.fade-in {
  animation: fadeIn 1s ease;
}

.slide-up {
  animation: slideUp 0.8s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }

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

/* ========== Download Button Styles ========== */
.btn.download-btn {
  background: linear-gradient(135deg, #9b59b6, #e91e63);
  color: white;
  box-shadow: 0 5px 20px rgba(155, 89, 182, 0.4);
  position: relative;
  overflow: hidden;
  animation: pulse-download 2s infinite;
}

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

.btn.download-btn:hover::before {
  left: 100%;
}

.btn.download-btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 10px 40px rgba(155, 89, 182, 0.6);
  background: linear-gradient(135deg, #8e44ad, #c0392b);
}

.btn.download-btn i {
  margin-right: 8px;
  animation: bounce-download 2s infinite;
}

@keyframes pulse-download {

  0%,
  100% {
    box-shadow: 0 5px 20px rgba(155, 89, 182, 0.4);
  }

  50% {
    box-shadow: 0 5px 30px rgba(155, 89, 182, 0.7);
  }
}

@keyframes bounce-download {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-3px);
  }
}

/* ========== Enhanced Animations ========== */

/* Shimmer effect on section titles */
.section-title {
  position: relative;
  overflow: hidden;
}

.section-title::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% {
    left: -100%;
  }

  100% {
    left: 100%;
  }
}

/* Enhanced card hover effects */
.project-card,
.skill-card,
.stat-card,
.vision-card,
.contact-card {
  position: relative;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.project-card:hover,
.vision-card:hover {
  transform: translateY(-15px) scale(1.02);
}

.stat-card:hover,
.skill-card:hover {
  transform: translateY(-12px) rotate(2deg);
}

.contact-card:hover {
  transform: translateY(-10px) scale(1.05);
}

/* Glow effect on hover */
.project-card:hover::after,
.vision-card:hover::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, #00d4ff, #f39c12, #e74c3c, #00d4ff);
  border-radius: 20px;
  z-index: -1;
  opacity: 0.7;
  filter: blur(10px);
  animation: glow-rotate 3s linear infinite;
}

@keyframes glow-rotate {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* Smooth image loading */
img {
  transition: opacity 0.5s ease, transform 0.3s ease;
}

img:not(.loaded) {
  opacity: 0.5;
}

img.loaded {
  opacity: 1;
}

/* CTA Buttons stagger animation */
.cta-buttons .btn:nth-child(1) {
  animation: slideInLeft 0.8s ease 0.2s both;
}

.cta-buttons .btn:nth-child(2) {
  animation: slideInLeft 0.8s ease 0.4s both;
}

.cta-buttons .btn:nth-child(3) {
  animation: slideInLeft 0.8s ease 0.6s both;
}

.cta-buttons .btn:nth-child(4) {
  animation: slideInLeft 0.8s ease 0.8s both;
}

/* Gradient animation for primary color elements */
@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

.logo:hover {
  background: linear-gradient(45deg, #00d4ff, #f39c12, #00d4ff);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 3s ease infinite;
}

/* Tech tag hover animation */
.tech-tag {
  transition: all 0.3s ease;
  cursor: pointer;
}

.tech-tag:hover {
  transform: translateY(-3px) scale(1.1);
  background: var(--primary-color);
  color: white;
  box-shadow: 0 5px 15px rgba(0, 212, 255, 0.4);
}

/* Enhanced scroll indicator */
.scroll-down {
  animation: bounce-glow 2s infinite;
}

@keyframes bounce-glow {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
    filter: drop-shadow(0 0 5px var(--primary-color));
  }

  50% {
    transform: translateX(-50%) translateY(-15px);
    filter: drop-shadow(0 0 15px var(--primary-color));
  }
}

/* Navbar link active state enhancement */
.nav-menu li a {
  transition: all 0.3s ease;
}

.nav-menu li a:hover {
  transform: translateY(-2px);
  color: var(--primary-color);
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

/* Kaggle card specific styling */
.contact-card.kaggle:hover {
  border-color: #20beff;
}

.contact-card.kaggle:hover i {
  color: #20beff;
}


/* ========== Responsive Design ========== */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    flex-direction: column;
    background: rgba(20, 20, 20, 0.98);
    width: 100%;
    padding: 40px 20px;
    transition: var(--transition);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    gap: 20px;
  }

  body.light-mode .nav-menu {
    background: rgba(255, 255, 255, 0.98);
  }

  .nav-menu.active {
    left: 0;
  }

  .hero-text h1 {
    font-size: 2.5rem;
    overflow-wrap: break-word;
  }

  .hero-text h1 .typing {
    display: block;
    white-space: nowrap;
  }

  .hero-text .subtitle {
    font-size: 1.1rem;
  }

  .hero-image img {
    width: 250px;
    height: 250px;
  }

  .section-title {
    font-size: 2.2rem;
  }

  .cta-buttons {
    justify-content: center;
  }

  .stats-grid,
  .skill-grid,
  .project-grid,
  .vision-content,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}