/* Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
  font-family: Arial, sans-serif; 
  line-height: 1.6; 
  scroll-behavior: smooth;
  background: linear-gradient(-45deg, #4facfe, #00f2fe, #43e97b, #38f9d7);
  background-size: 400% 400%;
  animation: gradientBG 15s ease infinite;
  transition: background 0.3s, color 0.3s;
}

/* Navbar */
header {
  background: rgba(17, 17, 17, 0.8);
  backdrop-filter: blur(10px);
  color: #fff;
  padding: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
}
header nav { display: flex; justify-content: space-between; align-items: center; }
header ul { list-style: none; display: flex; gap: 1rem; }
header ul li a { color: white; text-decoration: none; font-weight: bold; }
header ul li a:hover { color: #00f2fe; }
#dark-toggle { margin-left: 20px; padding: 5px 10px; border: none; border-radius: 5px; cursor: pointer; }

/* Hero Section */
#hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 40px;
  color: white;
  background: linear-gradient(120deg, #485663, #00f2fe); /* bright cyan/blue */
  background-size: 200% 200%;
  animation: gradientMove 8s ease infinite;
}
.hero-container { max-width: 800px; }
#hero h2 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 10px;
  color: #fff;
  text-shadow: 0 0 10px rgba(0,0,0,0.5);
}
#hero p {
  font-size: 1.5rem;
  margin: 1rem 0;
  color: #f0f0f0;
  text-shadow: 0 0 8px rgba(0,0,0,0.4);
}
.hero-buttons { display: flex; gap: 15px; justify-content: center; margin-top: 20px; }
.btn {
  background: white; color: #111; padding: 10px 20px; border-radius: 6px;
  text-decoration: none; font-weight: bold; transition: 0.3s;
}
.btn:hover { background: #b2ea0b; color: white; }
.resume-btn { background: #111; color: white; }
.resume-btn:hover { background: #e08910; }

/* Floating shapes in hero */
.floating-shapes { position: absolute; width: 100%; height: 100%; top: 0; left: 0; overflow: hidden; z-index: 0; }
.floating-shapes span {
  position: absolute;
  display: block;
  width: 20px; height: 20px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  animation: float 10s infinite ease-in-out;
}
.floating-shapes span:nth-child(1) { left: 10%; animation-duration: 8s; }
.floating-shapes span:nth-child(2) { left: 30%; animation-duration: 12s; }
.floating-shapes span:nth-child(3) { left: 50%; animation-duration: 10s; }
.floating-shapes span:nth-child(4) { left: 70%; animation-duration: 14s; }
.floating-shapes span:nth-child(5) { left: 90%; animation-duration: 9s; }

@keyframes float {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  50% { opacity: 1; }
  100% { transform: translateY(-10vh) scale(1.2); opacity: 0; }
}

/* Wave Effect */
.wave {
  position: absolute;
  bottom: 0;
  width: 200%;
  height: 120px;
  background: url('https://svgshare.com/i/ubB.svg') repeat-x;
  background-size: 50% 100%;
  animation: waveMove 10s linear infinite;
  pointer-events: none;
}
@keyframes waveMove {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* About */
#about { padding: 60px 20px; text-align: center; }
.about-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  max-width: 800px;
  margin: auto;
  background: #fff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  transition: 0.3s;
}
.about-container {
  animation: pulseGlow 3s infinite ease-in-out;
  /* Optional: add transform origin for smooth scaling */
  transform-origin: center;
  transition: box-shadow 0.3s ease;
}

@keyframes pulseGlow {
  0% {
    transform: scale(1);
    box-shadow: 0 0 5px rgba(0, 242, 254, 0.4);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(0, 242, 254, 0.8);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 5px rgba(0, 242, 254, 0.4);
  }
}


body.dark .about-container {
  background: #222;
  color: #eee;
}
.profile-pic { width: 160px; height: 160px; border-radius: 50%; object-fit: cover; border: 3px solid #00f2fe; transition: 0.3s; }
.profile-pic:hover { transform: scale(1.05); box-shadow: 0 8px 20px rgba(0,0,0,0.2); }

/* Skills */
#skills { padding: 60px 20px; text-align: center; background: #8db341; }
#skills h2 { margin-bottom: 30px; font-size: 2rem; color: #111; }
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 15px; max-width: 900px; margin: auto;
}
.skill {
  background: white; border: 2px solid #2e7768; padding: 15px; border-radius: 8px;
  font-weight: bold; color: #111; transition: 0.3s ease;
}
.skill:hover { background: #00f2fe; color: white; transform: scale(1.05); }

/* Projects */
#projects { padding: 60px 20px; background: linear-gradient(135deg, #d50d0d, #098fd6); text-align: center; }
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 25px; max-width: 1100px; margin: auto; }
.project-card { background: white; border-radius: 12px; border: 2px solid #00f2fe; overflow: hidden; transition: 0.3s; }
.project-card:hover { transform: translateY(-8px) scale(1.03); box-shadow: 0 10px 20px rgba(0,0,0,0.2); }
.project-card img { width: 100%; border-bottom: 2px solid #00f2fe; }
.project-card h3 { margin: 15px; }
.project-card p { margin: 0 15px 15px; color: #444; }
.project-buttons { margin: 15px; }
.project-buttons .btn { display: inline-block; }

/* Experience */
#experience { padding: 60px 20px; background: #f9f9f9; text-align: center; }
.timeline { max-width: 800px; margin: auto; border-left: 3px solid #00f2fe; padding-left: 20px; }
.timeline-item { margin-bottom: 30px; position: relative; }
.timeline-item::before {
  content: ''; position: absolute; left: -10px; top: 5px;
  width: 15px; height: 15px; background: #00f2fe; border-radius: 50%;
}

/* Education */
#education { padding: 60px 20px; background: #d45e36; text-align: center; }
.education-container { display: grid; gap: 20px; max-width: 800px; margin: auto; }
.edu-card { background: #dddbe4; padding: 20px; border-radius: 8px; transition: 0.3s; }
.edu-card:hover { transform: scale(1.05); box-shadow: 0 6px 15px rgba(0,0,0,0.1); }

/* Certificates */
#certificates { padding: 60px 20px; background: #f9f9f9; text-align: center; }
.cert-grid { display: grid; gap: 15px; max-width: 600px; margin: auto; }
.cert-card {
  background: rgb(133, 211, 16);
  padding: 15px;
  border-left: 4px solid #00f2fe;
  border-radius: 6px;
  text-align: left;
  transition: 0.3s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  font-weight: bold;
}
.cert-card:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.6);
  border-color: #4facfe;
  color: #00f2fe;
}
.cert-card::after {
  content: "🔗";
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%) scale(0);
  opacity: 0;
  transition: 0.3s ease;
  font-size: 1.2rem;
}
.cert-card:hover::after { transform: translateY(-50%) scale(1); opacity: 1; }

/* Contact */
#contact { padding: 60px 20px; text-align: center; }
.contact-container { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; }
form { display: flex; flex-direction: column; gap: 10px; width: 300px; }
form input, form textarea { padding: 10px; border: 2px solid #00f2fe; border-radius: 6px; }
form button { background: #00f2fe; color: white; border: none; padding: 10px; border-radius: 6px; cursor: pointer; }
form button:hover { background: #043c6c; }
.contact-info { max-width: 300px; text-align: left; }
.socials { margin-top: 10px; display: flex; gap: 15px; }
.socials a { font-size: 1.5rem; color: #ec0fd2; transition: 0.3s; }
.socials a:hover { color: #e91d19; }

/* Footer */
footer { background: #111; color: white; text-align: center; padding: 15px; position: relative; }
.back-to-top {
  position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  background: #00f2fe; color: white; padding: 8px 12px; border-radius: 50%; text-decoration: none;
}
.back-to-top:hover { background: #4facfe; }

/* Dark Mode */
body.dark { background: #121212; color: #eee; }
body.dark header { background: #222; }
body.dark h1, body.dark h2, body.dark h3, body.dark p, body.dark small { color: #eee; }
body.dark .btn, body.dark .resume-btn { background: #4facfe; color: white; }
body.dark .skill, body.dark .project-card, body.dark .timeline,
body.dark .edu-card, body.dark .cert-card, body.dark form, body.dark .contact-info {
  background: #1e1e1e; color: #eee; border-color: #4facfe;
}
body.dark .socials a { color: #4facfe; }
body.dark #skills, body.dark #projects, body.dark #experience,
body.dark #education, body.dark #certificates, body.dark #contact {
  background: #1a1a1a !important;
}
body.dark h2 {
  color: #00f2fe !important;
  text-shadow: 0 0 10px #00f2fe, 0 0 20px #00f2fe, 0 0 30px #00f2fe;
}

/* Scroll Progress Bar */
#progress-container {
  position: fixed; top: 0; left: 0; width: 100%; height: 5px;
  background: transparent; z-index: 200;
}
#progress-bar {
  height: 5px;
  background: linear-gradient(90deg, #4facfe, #00f2fe);
  width: 0%; transition: width 0.25s ease-out;
}

/* Keyframes */
@keyframes gradientBG {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Fix hero content visibility */
#hero h2, 
#hero p, 
.hero-buttons, 
.hero-socials {
  position: relative;
  z-index: 2;  /* ensures text stays above gradient/shapes */
  opacity: 1 !important;
  color: #fff !important;
  text-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.floating-shapes, 
.wave, 
.bg-shape {
  z-index: 0; /* keeps them behind */
}

.wave-divider {
  position: absolute;
  bottom: 0;
  width: 100%;
  line-height: 0;
  overflow: hidden;
  z-index: 1;
}

.wave-divider svg {
  display: block;
  width: 100%;
  height: 100px;
}

.wave-divider path {
  fill: #ffffff; /* same as About background */
  transition: 0.3s ease;
}

body.dark .wave-divider path {
  fill: #1a1a1a; /* matches dark About background */
}

#hero {
  position: relative;
  overflow: hidden;
}

/* Education Cards */
.edu-card {
  background: #f9f9f9;
  padding: 20px;
  border-radius: 8px;
  transition: 0.3s ease;
  text-decoration: none;
  color: inherit;
  display: block;
  cursor: pointer;
  position: relative; /* needed for pin */
  overflow: hidden;
}

.edu-card:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 15px rgba(0,0,0,0.1);
  color: #00f2fe;
}

/* Pin Icon on Hover */
.edu-card::after {
  content: "📎";
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%) scale(0);
  opacity: 0;
  transition: 0.3s ease;
  font-size: 1.2rem;
}

.edu-card:hover::after {
  transform: translateY(-50%) scale(1);
  opacity: 1;
}

/* Overlay */
#popup-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(3px);
  display: none;
  z-index: 999;
}

/* Popup */
#skill-rating-popup {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: #fff;
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  width: 300px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  display: none;
  z-index: 1000;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

#skill-rating-popup.show {
  display: block;
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

#skill-rating-popup h3 { margin-bottom: 10px; }

.rating-bar {
  width: 100%;
  height: 20px;
  background: #ddd;
  border-radius: 10px;
  overflow: hidden;
  margin: 10px 0;
}

.rating-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #4facfe, #00f2fe);
  transition: width 0.5s ease-in-out;
}

#close-rating {
  margin-top: 15px;
  padding: 8px 15px;
  background: #00f2fe;
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  transition: 0.3s;
}

#close-rating:hover { background: #4facfe; }

/* Dark Mode */
body.dark #skill-rating-popup { background: #1e1e1e; color: #eee; }
body.dark .rating-bar { background: #333; }
body.dark .rating-fill { background: linear-gradient(90deg, #4facfe, #00f2fe); }

/* --- Skill Flip Cards --- */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 20px;
  max-width: 900px;
  margin: auto;
  perspective: 1000px; /* for 3D effect */
}

.skill-card {
  width: 100%;
  height: 120px;
  perspective: 1000px;
  cursor: pointer;
}

.skill-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.skill-card:hover .skill-inner {
  transform: rotateY(180deg);
}

.skill-front,
.skill-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 2px solid #2e7768;
  border-radius: 10px;
  font-weight: bold;
  font-size: 1rem;
}

.skill-front {
  background: white;
  color: #111;
}

.skill-back {
  background: #00f2fe;
  color: white;
  transform: rotateY(180deg);
}

.section-divider {
  position: relative;
  width: 100%;
  line-height: 0;
  overflow: hidden;
}

.section-divider svg {
  display: block;
  width: 100%;
  height: 100px;
}

.section-divider path {
  fill: #f8f6f6; /* default */
  transition: 0.3s ease;
}

body.dark .section-divider path {
  fill: #1a1a1a; /* dark mode */
}

/* 🌙 Moon */
#moon {
  position: fixed;
  top: 50px;
  right: 80px;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle at 30% 30%, #fff 60%, #ccc 100%);
  border-radius: 50%;
  box-shadow: 0 0 30px rgba(255, 255, 255, 0.8);
  opacity: 0;
  transition: opacity 0.8s ease;
  z-index: -1;
}

/* ✨ Stars */
#stars {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  overflow: hidden;
  z-index: -2;
  opacity: 0;
  transition: opacity 0.8s ease;
}

#stars::before, #stars::after {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: transparent;
  background-image:
    radial-gradient(2px 2px at 20% 30%, white, transparent),
    radial-gradient(1.5px 1.5px at 70% 80%, white, transparent),
    radial-gradient(2px 2px at 40% 60%, white, transparent),
    radial-gradient(1.8px 1.8px at 90% 20%, white, transparent),
    radial-gradient(2px 2px at 10% 75%, white, transparent),
    radial-gradient(1.5px 1.5px at 50% 10%, white, transparent);
  animation: twinkle 5s infinite linear;
}

#stars::after {
  transform: scale(1.5);
  opacity: 0.6;
}

/* ⭐ Twinkling animation */
@keyframes twinkle {
  0%, 100% { opacity: 0.8; }
  50% { opacity: 0.4; }
}

/* 🌑 Show in dark mode */
body.dark #stars {
  opacity: 1;
}
body.dark #moon {
  opacity: 1;
}

/* Floating Squares for Projects */
.floating-square {
  position: absolute;
  background: rgba(255, 255, 255, 0.25);
  width: 25px;
  height: 25px;
  animation: floatSquare 12s infinite ease-in-out;
  z-index: 0;
  border-radius: 4px;
}

.floating-square {
  position: absolute;
  width: 20px;
  height: 30px;
  background: #00f2fe;
  border-radius: 4px;
  animation-name: floatSquare;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
  animation-direction: alternate;
}

/* Different positions, sizes, and animation durations */
.floating-square:nth-of-type(1) {
  left: 35%;
  width: 20px;
  height: 30px;
  animation-duration: 7s;
  top: 100vh; /* start off screen at bottom */
}

.floating-square:nth-of-type(2) {
  left: 50%;
  width: 30px;
  height: 30px;
  animation-duration: 8s;
  top: 100vh;
}

.floating-square:nth-of-type(3) {
  left: 85%;
  width: 25px;
  height: 30px;
  animation-duration: 10s;
  top: 100vh;
}

@keyframes floatSquare {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translateY(-110vh) rotate(360deg);
    opacity: 0;
  }
}

/* Ensure project content stays above */
#projects {
  position: relative;
  overflow: hidden;
  z-index: 1;
}
#projects .project-grid,
#projects h2 {
  position: relative;
  z-index: 2;
}

.sparkle {
  position: absolute;
  width: 40px;
  height: 40px;
  background: rgb(185, 225, 8);
  border-radius: 50%;
  animation: sparkleAnim 2s infinite alternate;
}

/* Position and animation delay for each sparkle */
.sparkle:nth-of-type(1) {
  top: 50%; left: 10%; animation-delay: 4s;
}
.sparkle:nth-of-type(2) {
  top: 30%; left: 80%; animation-delay: 2s;
}
.sparkle:nth-of-type(3) {
  top: 80%; left: 70%; animation-delay: 0.6s;
}
.sparkle:nth-of-type(4) {
  top: 60%; left: 30%; animation-delay: 1s;
}
.sparkle:nth-of-type(5) {
  top: 20%; left: 20%; animation-delay: 1.4s;
}

/* Add more nth-child selectors for more sparkles */

@keyframes sparkleAnim {
  from { opacity: 0.2; transform: scale(0.5); }
  to { opacity: 1; transform: scale(1.2); }
}

.floating-book {
  position: absolute;
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.8);
  animation-name: floatBook;
  animation-iteration-count: infinite;
  animation-timing-function: ease-in-out;
  animation-direction: alternate;
}

/* Different positions, sizes, and animation durations */
.floating-book:nth-of-type(1) {
  left: 20%;
  font-size: 1.6rem;
  animation-duration: 9s;
  animation-delay: 0s;
  top: 100vh;
}

.floating-book:nth-of-type(2) {
  left: 40%;
  font-size: 1.4rem;
  animation-duration: 7.5s;
  animation-delay: 2s;
  top: 100vh;
}

.floating-book:nth-of-type(3) {
  left: 60%;
  font-size: 1.7rem;
  animation-duration: 8.5s;
  animation-delay: 1s;
  top: 100vh;
}

.floating-book:nth-of-type(4) {
  left: 80%;
  font-size: 1.5rem;
  animation-duration: 10s;
  animation-delay: 3s;
  top: 100vh;
}

@keyframes floatBook {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translateY(-110vh) rotate(360deg);
    opacity: 0;
  }
}

.floating-hex-container {
  position: relative;
  width: 100%;
  height: 50px;
  overflow: hidden;
}

.floating-hex {
  width: 30px;
  height: 30px;
  background: rgba(0, 242, 254, 0.3);
  clip-path: polygon(25% 6.7%, 75% 6.7%, 100% 50%, 75% 93.3%, 25% 93.3%, 0% 50%);
  position: absolute;
  animation-name: floatHex;
  animation-iteration-count: infinite;
  animation-timing-function: ease-in-out;
  animation-direction: alternate;
}

.floating-hex:nth-of-type(1) {
  left: 20%;
  top: 20px;
  animation-duration: 5s;
  animation-delay: 0s;
}

.floating-hex:nth-of-type(2) {
  left: 50%;
  top: 50px;
  animation-duration: 6s;
  animation-delay: 1s;
}

.floating-hex:nth-of-type(3) {
  left: 80%;
  top: 20px;
  animation-duration: 7s;
  animation-delay: 0.5s;
}

@keyframes floatHex {
  0% {
    transform: translateY(0) scale(0.5);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translateY(-80px) scale(1);
    opacity: 0;
  }
}

.timeline-orb-container {
  position: relative;
  width: 100%;
  height: 70px; /* fixed height, adjust as needed */
  overflow: visible;
}

.timeline-orb {
  position: absolute;
  width: 30px;
  height: 30px;
  background: #00f2fe;
  border-radius: 50%;
  animation-name: orbFloat;
  animation-iteration-count: infinite;
  animation-direction: alternate;
  animation-timing-function: ease-in-out;
}

/* Positions and animations */
.timeline-orb:nth-of-type(1) {
  left: 10%;
  top: 45%;
  animation-duration: 4s;
  animation-delay: 0s;
}
.timeline-orb:nth-of-type(2) {
  left: 30%;
  top:  10%;
  animation-duration: 5s;
  animation-delay: 1s;
}
.timeline-orb:nth-of-type(3) {
  left: 50%;
  top: 55%;
  animation-duration: 3.5s;
  animation-delay: 0.5s;
}
.timeline-orb:nth-of-type(4) {
  left: 70%;
  top: 40%;
  animation-duration: 4.5s;
  animation-delay: 1.5s;
}
.timeline-orb:nth-of-type(5) {
  left: 90%;
  top: 50%;
  animation-duration: 3.8s;
  animation-delay: 0.8s;
}

@keyframes orbFloat {
  0% {
    transform: translateX(-20px);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translateX(20px);
    opacity: 0;
  }
}