/* ===== PROFESSIONAL COLOR PALETTE ===== */
:root {
  --deep-navy: #0a192f;
  --navy: #112240;
  --light-navy: #233554;
  --lightest-navy: #303C55;
  --dark-slate: #495670;
  --slate: #8892b0;
  --light-slate: #a8b2d1;
  --lightest-slate: #ccd6f6;
  --teal: #64ffda;
  --teal-transparent: rgba(100, 255, 218, 0.1);
  --white: #e6f1ff;
  --transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
}

/* ===== BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', 'Montserrat', sans-serif;
  background: linear-gradient(135deg, #0a192f, #0d1c38);
  color: var(--slate);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 15% 30%, var(--teal-transparent) 0%, transparent 25%),
    radial-gradient(circle at 85% 70%, var(--teal-transparent) 0%, transparent 25%),
    linear-gradient(135deg, transparent 0%, rgba(10, 25, 47, 0.9) 100%);
  z-index: -1;
  pointer-events: none;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
  color: var(--white);
  font-weight: 600;
  line-height: 1.1;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 0.5rem;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin-bottom: 2rem;
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--teal);
  border-radius: 2px;
}

p {
  margin-bottom: 1rem;
  color: var(--light-slate);
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 0 20px;
  overflow: hidden;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  padding: 2rem;
  z-index: 2;
  position: relative;
}
/* --- Typing effect (CSS-only) --- */
.typing-text {
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  border-right: 3px solid #fff; /* cursor */
  font-size: 1.1rem;
  min-height: 1.5em; /* keep height stable before animation */
  /* Infinite loop: type, hold, erase, hold */
  animation: typing 6s steps(45, end) infinite, blink 0.7s step-end infinite;
}
.typing-text span {
  display: inline-block;
  white-space: nowrap;
}

/* Keyframes for typing */
@keyframes typing {
  0%   { width: 0; }
  40%  { width: 100%; }
  60%  { width: 100%; }
  100% { width: 0; }
}
.avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 4px solid var(--teal);
  object-fit: cover;
  margin: 0 auto 2rem;
  box-shadow: 0 0 30px rgba(100, 255, 218, 0.3);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.avatar:hover {
  transform: scale(1.05);
  box-shadow: 0 0 50px rgba(100, 255, 218, 0.5);
}

.avatar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, transparent 50%, rgba(100, 255, 218, 0.1));
  pointer-events: none;
}

.hero h1 {
  background: linear-gradient(90deg, var(--white), var(--teal));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 300% 300%;
  animation: gradient-shift 6s ease infinite;
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.typing-container {
  min-height: 60px;
  margin: 1.5rem 0;
  position: relative;
}

.typing-text {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  color: var(--light-slate);
  display: inline-block;
  position: relative;
  font-weight: 300;
}

.typing-text::after {
  content: '|';
  position: absolute;
  right: -10px;
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.btn {
  display: inline-block;
  background: transparent;
  color: var(--teal);
  padding: 0.8rem 2rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 500;
  margin-top: 1rem;
  border: 1px solid var(--teal);
  position: relative;
  overflow: hidden;
  z-index: 1;
  transition: var(--transition);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: var(--teal-transparent);
  z-index: -1;
  transition: width 0.5s ease;
}

.btn:hover {
  color: var(--deep-navy);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(100, 255, 218, 0.2);
}

.btn:hover::before {
  width: 100%;
}

.wave-divider {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100px;
  background: var(--navy);
  clip-path: polygon(0 70%, 100% 0, 100% 100%, 0% 100%);
}

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(10, 25, 47, 0.85);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: 0 5px 20px rgba(2, 12, 27, 0.7);
  border-bottom: 1px solid rgba(100, 255, 218, 0.1);
  transition: var(--transition);
}

.navbar ul {
  display: flex;
  justify-content: center;
  list-style: none;
  padding: 1rem 0;
  margin: 0;
  flex-wrap: wrap;
}

.navbar li {
  margin: 0 1.5rem;
}

.navbar a {
  color: var(--light-slate);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
  transition: var(--transition);
  font-size: 0.9rem;
}

.navbar a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--teal);
  border-radius: 2px;
  transition: var(--transition);
}

.navbar a:hover {
  color: var(--teal);
}

.navbar a:hover::after {
  width: 100%;
}

/* ===== GLASS CARDS ===== */
.glass-card {
  background: rgba(17, 34, 64, 0.5);
  backdrop-filter: blur(10px);
  border-radius: 6px;
  padding: 2.5rem;
  margin: 2rem auto;
  max-width: 800px;
  border: 1px solid rgba(100, 255, 218, 0.1);
  box-shadow: 0 10px 30px rgba(2, 12, 27, 0.7);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, var(--teal), transparent, transparent, var(--teal));
  z-index: -1;
  animation: border-animate 4s linear infinite;
}

.glass-card::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, transparent, var(--lightest-navy), transparent, var(--lightest-navy));
  z-index: -1;
  animation: border-animate 4s linear infinite;
  animation-delay: -2s;
}

@keyframes border-animate {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(100%); }
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(2, 12, 27, 0.9);
}

/* ===== SKILLS SECTION ===== */
.skills-container {
  max-width: 700px;
  margin: 0 auto;
}

.skill {
  margin-bottom: 1.8rem;
}

.skill span {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--lightest-slate);
}

.bar {
  width: 100%;
  height: 12px;
  background: var(--light-navy);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}

.progress {
  height: 100%;
  border-radius: 6px;
  position: relative;
  width: 0;
  animation: fillBar 1.5s forwards;
  animation-delay: 0.5s;
  box-shadow: inset 0 0 10px rgba(100, 255, 218, 0.3);
}

.progress::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  animation: shine 2s infinite;
}

@keyframes fillBar {
  to { width: var(--progress-width); }
}

@keyframes shine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.htmlcss { 
  --progress-width: 45%; 
  background: linear-gradient(90deg, var(--teal), #2ecc71);
}
.objectorientedprogramming { 
  --progress-width: 85%; 
  background: linear-gradient(90deg, var(--teal), #3498db);
}
.cpp { 
  --progress-width: 83%; 
  background: linear-gradient(90deg, var(--teal), #9b59b6);
}
.c { 
  --progress-width: 75%; 
  background: linear-gradient(90deg, var(--teal), #e74c3c);
}

/* ===== INTERESTS SECTION ===== */
.interests-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.interests-list li {
  padding: 1.2rem;
  background: rgba(35, 53, 84, 0.5);
  border-radius: 6px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  text-align: center;
  border: 1px solid rgba(100, 255, 218, 0.1);
}

.interests-list li:hover {
  transform: translateY(-5px);
  background: rgba(35, 53, 84, 0.8);
  box-shadow: 0 10px 25px rgba(2, 12, 27, 0.7);
}

.interests-list li::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: var(--teal);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.3s ease;
}

.interests-list li:hover::before {
  transform: scaleY(1);
}

/* ===== PROJECTS SECTION ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 1.5rem;
}

.project-card {
  background: var(--navy);
  border-radius: 6px;
  padding: 1.8rem;
  transition: var(--transition);
  border: 1px solid rgba(100, 255, 218, 0.1);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 35px rgba(2, 12, 27, 0.8);
  border-color: var(--teal);
}

.project-card h3 {
  margin-bottom: 1rem;
  font-size: 1.3rem;
  color: var(--teal);
}

.project-card p {
  flex-grow: 1;
  margin-bottom: 1.5rem;
  color: var(--light-slate);
}

.project-card a {
  display: inline-block;
  color: var(--teal);
  text-decoration: none;
  font-weight: 500;
  margin-right: 1rem;
  transition: var(--transition);
  position: relative;
  padding-bottom: 2px;
}

.project-card a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--teal);
  transition: var(--transition);
}

.project-card a:hover {
  color: var(--white);
}

.project-card a:hover::after {
  width: 100%;
}

/* ===== CONTACT SECTION ===== */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  margin-top: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  padding: 0.8rem 1.2rem;
  border-radius: 6px;
  transition: var(--transition);
  background: rgba(35, 53, 84, 0.5);
  border: 1px solid rgba(100, 255, 218, 0.1);
}

.contact-item:hover {
  background: rgba(35, 53, 84, 0.8);
  transform: translateX(5px);
}

.contact-item i {
  font-size: 1.3rem;
  margin-right: 1rem;
  color: var(--teal);
  min-width: 30px;
}

.contact-item a {
  color: var(--lightest-slate);
  text-decoration: none;
  transition: var(--transition);
}

.contact-item a:hover {
  color: var(--teal);
}

/* ===== FOOTER ===== */
footer {
  text-align: center;
  padding: 2.5rem 0;
  background: var(--navy);
  margin-top: 3rem;
  border-top: 1px solid rgba(100, 255, 218, 0.1);
}

footer p {
  margin: 0.5rem 0;
  color: var(--slate);
  font-size: 0.9rem;
}

footer a {
  display: inline-block;
  color: var(--slate);
  font-size: 1.3rem;
  margin: 0 0.8rem;
  transition: var(--transition);
}

footer a:hover {
  color: var(--teal);
  transform: translateY(-5px);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .navbar ul {
    padding: 0.7rem 0;
  }
  
  .navbar li {
    margin: 0 0.8rem;
  }
  
  .glass-card {
    padding: 1.8rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .interests-list {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }
}

@media (max-width: 480px) {
  .hero-content {
    padding: 1rem;
  }
  
  .avatar {
    width: 160px;
    height: 160px;
  }
  
  .navbar li {
    margin: 0 0.5rem;
  }
  
  .navbar a {
    font-size: 0.8rem;
  }
  
  .glass-card {
    padding: 1.5rem;
  }
}

/* ===== SECTION SPACING ===== */
section {
  padding: 5rem 20px;
}

#about {
  padding-top: 8rem;
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 10px;
}

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

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

::-webkit-scrollbar-thumb:hover {
  background: #52d3b9;
}

/* ===== 3D EFFECTS ===== */
.glass-card {
  transform-style: preserve-3d;
  perspective: 1000px;
}

.glass-card:hover {
  transform: translateY(-5px) rotateX(5deg) rotateY(5deg);
}

/* ===== ADVANCED ANIMATIONS ===== */
@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0px); }
}

.avatar {
  animation: float 4s ease-in-out infinite;
}

/* ===== GRADIENT TEXT CORRECTION ===== */
.hero h1 {
  background: linear-gradient(90deg, var(--white), var(--teal));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}