@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap");

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

/* Theme Variables */
body[data-theme="dark"] {
  --bg-primary: #000;
  --bg-secondary: rgba(0, 0, 0, 0.65);
  --text-primary: #e7e9ea;
  --text-secondary: #71767b;
  --border-color: #2f3336;
  --btn-border: #536471;
  --btn-hover: rgba(231, 233, 234, 0.1);
  --btn-primary-bg: #eff3f4;
  --btn-primary-text: #0f1419;
  --btn-primary-hover: #d7dbdc;
  --banner-bg: #333639;
  --profile-bg: #000;
}

body[data-theme="light"] {
  --bg-primary: #fffffe;
  --bg-secondary: rgba(248, 245, 242, 0.85);
  --text-primary: #0f1419;
  --text-secondary: #536471;
  --border-color: #eaddcf;
  --btn-border: #cfd9de;
  --btn-hover: rgba(15, 20, 25, 0.1);
  --btn-primary-bg: #0f1419;
  --btn-primary-text: #ffffff;
  --btn-primary-hover: #272c30;
  --banner-bg: #cfd9de;
  --profile-bg: #ffffff;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  background-color: var(--bg-primary);
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  min-height: 100vh;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  overflow-x: hidden;
}

/* Header with back arrow */
.header-nav {
  position: sticky;
  top: 0;
  background-color: var(--bg-secondary);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 30px 16px;
  height: 53px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 10;
  transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
  max-width: 100%;
  box-sizing: border-box;
}

.logo-section {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-button {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s;
}

.logo-button .logo-dark {
  display: block;
}
.logo-button .logo-light {
  display: none;
}

/* when theme is light, swap icons */
body[data-theme="light"] .logo-button .logo-dark {
  display: none;
}
body[data-theme="light"] .logo-button .logo-light {
  display: block;
}

/* when theme is dark ensure correct state (optional if dark is default) */
body[data-theme="dark"] .logo-button .logo-dark {
  display: block;
}
body[data-theme="dark"] .logo-button .logo-light {
  display: none;
}

.logo-button:hover {
  background-color: var(--btn-hover);
}

.header-logo {
  margin-left: 5px;
}

.header-name {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 24px;
}

.header-posts {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Theme Toggle Button */
.theme-toggle-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--btn-border);
  background-color: transparent;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s, border-color 0.3s ease;
  font-size: 18px;
}

.theme-toggle-btn:hover {
  background-color: var(--btn-hover);
}

.theme-toggle-btn i {
  transition: transform 0.3s ease;
}

.theme-toggle-btn:active i {
  transform: rotate(180deg);
}

/* Profile Banner */
.profile-banner {
  width: 100%;
  height: 30vh;
  background-color: var(--banner-bg);
  position: relative;
  overflow: hidden;
  transition: background-color 0.3s ease;
  cursor: pointer;
}

/* Dark Mode - Deep Space Galaxy Background */
.galaxy-background {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 1;
  background: radial-gradient(
      ellipse at 15% 25%,
      rgba(88, 101, 242, 0.25) 0%,
      transparent 40%
    ),
    radial-gradient(
      ellipse at 85% 75%,
      rgba(139, 92, 246, 0.25) 0%,
      transparent 40%
    ),
    radial-gradient(
      ellipse at 50% 50%,
      rgba(59, 130, 246, 0.15) 0%,
      transparent 50%
    ),
    linear-gradient(180deg, #0a0a1a 0%, #1a1a2e 50%, #16213e 100%);
  animation: galaxyShift 20s ease-in-out infinite alternate;
}

/* Light Mode - Soft Clouds & Sky Background */
body[data-theme="light"] .galaxy-background {
  background: radial-gradient(
      ellipse at 30% 20%,
      rgba(255, 255, 255, 0.8) 0%,
      transparent 40%
    ),
    radial-gradient(
      ellipse at 70% 60%,
      rgba(255, 255, 255, 0.6) 0%,
      transparent 45%
    ),
    radial-gradient(
      ellipse at 20% 80%,
      rgba(255, 255, 255, 0.5) 0%,
      transparent 35%
    ),
    radial-gradient(
      ellipse at 90% 30%,
      rgba(255, 255, 255, 0.7) 0%,
      transparent 40%
    ),
    linear-gradient(180deg, #e0f2fe 0%, #dbeafe 30%, #e0e7ff 70%, #ede9fe 100%);
  animation: cloudsFloat 25s ease-in-out infinite alternate;
}

@keyframes galaxyShift {
  0% {
    transform: scale(1) rotate(0deg);
    opacity: 0.9;
  }
  100% {
    transform: scale(1.08) rotate(3deg);
    opacity: 1;
  }
}

@keyframes cloudsFloat {
  0% {
    transform: scale(1) translateX(0);
    opacity: 0.95;
  }
  100% {
    transform: scale(1.05) translateX(20px);
    opacity: 1;
  }
}

/* Dark Mode - Bright Twinkling Stars */
.stars-layer {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 1;
  background-image: radial-gradient(
      2px 2px at 20% 30%,
      rgba(255, 255, 255, 0.9),
      transparent
    ),
    radial-gradient(2px 2px at 60% 70%, rgba(255, 255, 255, 0.8), transparent),
    radial-gradient(1px 1px at 50% 50%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1px 1px at 80% 10%, rgba(200, 220, 255, 0.8), transparent),
    radial-gradient(2px 2px at 90% 60%, rgba(220, 200, 255, 0.8), transparent),
    radial-gradient(1px 1px at 33% 80%, rgba(255, 255, 255, 0.6), transparent),
    radial-gradient(1px 1px at 15% 90%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1px 1px at 45% 15%, rgba(255, 255, 255, 0.6), transparent),
    radial-gradient(1px 1px at 70% 40%, rgba(200, 220, 255, 0.7), transparent),
    radial-gradient(1px 1px at 25% 60%, rgba(220, 200, 255, 0.6), transparent);
  background-size: 200% 200%;
  background-position: 0% 0%;
  animation: starsMove 30s linear infinite, starsTwinkle 3s ease-in-out infinite;
  opacity: 0.8;
}

/* Light Mode - Subtle Sparkles */
body[data-theme="light"] .stars-layer {
  background-image: radial-gradient(
      3px 3px at 25% 25%,
      rgba(255, 255, 255, 0.9),
      transparent
    ),
    radial-gradient(2px 2px at 65% 65%, rgba(255, 255, 255, 0.8), transparent),
    radial-gradient(2px 2px at 45% 45%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(3px 3px at 85% 15%, rgba(255, 255, 255, 0.85), transparent),
    radial-gradient(2px 2px at 15% 85%, rgba(255, 255, 255, 0.75), transparent);
  background-size: 150% 150%;
  animation: sparkleMove 20s linear infinite;
  opacity: 0.4;
}

@keyframes starsMove {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 100% 100%;
  }
}

@keyframes starsTwinkle {
  0%,
  100% {
    opacity: 0.8;
  }
  50% {
    opacity: 1;
  }
}

@keyframes sparkleMove {
  0% {
    background-position: 0% 0%;
    opacity: 0.4;
  }
  50% {
    opacity: 0.6;
  }
  100% {
    background-position: 50% 50%;
    opacity: 0.4;
  }
}

/* Ripple Canvas */
#ripple-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

/* Dark Mode - Deep Space Overlay */
.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(0, 0, 0, 0.3) 0%,
    rgba(20, 20, 50, 0.4) 50%,
    rgba(0, 0, 0, 0.3) 100%
  );
  z-index: 2;
  pointer-events: none;
}

/* Light Mode - Soft Dreamy Overlay */
body[data-theme="light"] .banner-overlay {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(224, 242, 254, 0.2) 50%,
    rgba(255, 255, 255, 0.1) 100%
  );
}

/* Simple & Elegant Banner Title */
.banner-title {
  position: absolute;
  z-index: 3;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  margin: 0;
  width: 100%;
  max-width: 100%;
  padding: 0 16px;
  text-align: center;
  color: #ffffff;
  font-size: clamp(2rem, 8vw, 4.5rem);
  font-weight: 800;
  letter-spacing: 3px;
  text-transform: uppercase;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  pointer-events: none;
  box-sizing: border-box;
}

.banner-title .word {
  display: inline-block;
  background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3), 0 0 40px rgba(255, 255, 255, 0.2);
  animation: gentleFloat 3s ease-in-out infinite;
}

/* Light Mode - Dark Gradient Text (same style as dark mode) */
body[data-theme="light"] .banner-title .word {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 2px 10px rgba(255, 255, 255, 0.8),
    0 0 40px rgba(255, 255, 255, 0.5);
}

.banner-title .word:nth-child(2) {
  animation-delay: 0.2s;
}

/* Gentle floating animation */
@keyframes gentleFloat {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-8px);
  }
}

/* Profile Info Section */
.profile-info {
  padding: 12px 16px 16px;
  position: relative;
}

.profile-actions {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
  margin: 0 1rem;
  max-width: 100%;
  box-sizing: border-box;
}

/* Profile Picture */
.profile-pic {
  position: relative;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  overflow: visible;
  margin-top: -67px;
  cursor: pointer;
  background-color: var(--profile-bg);
  z-index: 2;
  transition: background-color 0.3s ease;
}

/* OUTER RING ANIMATION */
.profile-pic::before {
  content: "";
  position: absolute;
  top: -3px;
  left: -4px;
  right: -4px;
  bottom: -3px;
  border-radius: 50%;
  border: 4px solid transparent;
  background: conic-gradient(#6c3bb0, #6c3bb0) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  animation: ringSweep 3s linear infinite;
  z-index: -1;
  pointer-events: none;
  box-shadow: 0 0 8px 2px rgba(108, 59, 176, 0.4);
}

/* Show ring on hover or when clicked */
.profile-pic:hover::before,
.profile-pic.clicked::before {
  opacity: 1;
}

/* IMAGES */
.profile-pic img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  transition: opacity 0.3s ease;
}

/* Default image */
.main-prof-pic {
  z-index: 1;
  opacity: 1;
}

/* Hover and clicked images hidden initially */
.hover-prof-pic,
.clicked-prof-pic {
  z-index: 2;
  opacity: 0;
}

/* Hover effect (only when not clicked) */
.profile-pic:not(.clicked):hover .hover-prof-pic {
  opacity: 1;
}
.profile-pic:not(.clicked):hover .main-prof-pic {
  opacity: 0;
}

/* Clicked state */
.profile-pic.clicked .main-prof-pic,
.profile-pic.clicked .hover-prof-pic {
  opacity: 0;
}
.profile-pic.clicked .clicked-prof-pic {
  opacity: 1;
}

/* Remove ring when not hovered */
.profile-pic:not(:hover):not(.clicked)::before {
  opacity: 0;
}

/* Keyframes for smooth sweeping animation */
@keyframes ringSweep {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
  max-width: 100%;
}

.action-buttons a {
  text-decoration: none;
}

.btn {
  padding: 0 16px;
  height: 36px;
  border-radius: 18px;
  border: 1px solid var(--btn-border);
  background-color: transparent;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  position: relative;
}
.btn:hover {
  background-color: var(--btn-hover);
}

/* Hover Tooltips for Social Buttons */
.icon-btn-github::after,
.icon-btn-lnknd::after,
.icon-btn-email::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 20;
}

.icon-btn-github::after {
  content: "Go to my GitHub";
}

.icon-btn-lnknd::after {
  content: "Go to my LinkedIn";
}

.icon-btn-email::after {
  content: "Send me an email";
}

.icon-btn-github:hover::after,
.icon-btn-lnknd:hover::after,
.icon-btn-email:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(-12px);
}

/* Tooltip arrow */
.icon-btn-github::before,
.icon-btn-lnknd::before,
.icon-btn-email::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(2px);
  border: 6px solid transparent;
  border-top-color: var(--text-primary);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 20;
}

.icon-btn-github:hover::before,
.icon-btn-lnknd:hover::before,
.icon-btn-email:hover::before {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

.btn-primary {
  background-color: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border: none;
}

.btn-primary:hover {
  background-color: var(--btn-primary-hover);
}

.icon-btn-github,
.icon-btn-lnknd,
.icon-btn-email {
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 50%;
}

.icon-btn-github .github-dark {
  display: block;
}
.icon-btn-github .github-light {
  display: none;
}

/* when theme is light, swap icons */
body[data-theme="light"] .icon-btn-github .github-dark {
  display: none;
}
body[data-theme="light"] .icon-btn-github .github-light {
  display: block;
}

/* when theme is dark ensure correct state (optional if dark is default) */
body[data-theme="dark"] .icon-btn-github .github-dark {
  display: block;
}
body[data-theme="dark"] .icon-btn-github .github-light {
  display: none;
}

/* Profile Details */
.profile-details {
  margin-top: 4px;
  margin-left: 15px;
  max-width: 100%;
  overflow-wrap: break-word;
}

.profile-name {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 0;
}

.name {
  font-size: 20px;
  font-weight: 700;
  line-height: 24px;
}

.lock-icon {
  width: 20px;
  height: 20px;
}

.username {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  transition: color 0.3s ease;
}

.bio {
  font-size: 15px;
  line-height: 20px;
  margin-bottom: 12px;
  color: var(--text-primary);
  transition: color 0.3s ease;
  font-weight: bold;
}

.profile-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  transition: color 0.3s ease;
  max-width: 100%;
  overflow-wrap: break-word;
  word-break: break-word;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-direction: column;
  align-items: flex-start;
  max-width: 100%;
  overflow-wrap: break-word;
}

.meta-item i {
  width: 18px;
  height: 18px;
  padding-right: 20px;
  flex-shrink: 0;
}

.meta-item .description:hover {
  text-decoration: underline;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

/* Tabs Navigation */
.about {
  border-bottom: 1px solid var(--border-color);
  margin: 12px 0;
  transition: border-color 0.3s ease;
}

.about-container {
  display: flex;
  justify-content: center;
  flex-direction: column;
  flex-wrap: wrap;
  padding: 0 16px;
}

.about-container h2 {
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  transition: color 0.3s ease;
}

.about-container h3 {
  color: var(--text-primary);
  transition: color 0.3s ease;
}

.about-container p {
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 12px;
  transition: color 0.3s ease;
}

.about-container p:last-of-type {
  margin-bottom: 24px;
}
.about-des {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px;
}

/* Responsive Design */
@media (max-width: 600px) {
  .container {
    border-left: none;
    border-right: none;
  }

  .profile-banner {
    height: 150px;
  }

  .profile-pic {
    width: 110px;
    height: 110px;
    margin-top: -55px;
  }

  .action-buttons {
    flex-wrap: wrap;
  }

  .btn {
    font-size: 14px;
    padding: 0 12px;
  }
}

@media (max-width: 400px) {
  .profile-banner {
    height: 120px;
  }

  .profile-pic {
    width: 90px;
    height: 90px;
    margin-top: -45px;
  }

  .name {
    font-size: 18px;
  }

  .header-name {
    font-size: 16px;
  }
}

/* EDUCATION SECTION */
.edu-section {
  margin: 30px 0;
}

.edu-column {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px;
  transition: border-color 0.3s ease;
}

.edu-column h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-color);
}

.edu-item {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.edu-item:last-child {
  border-bottom: none;
}

.edu-year {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 6px;
}

.edu-item h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.institution {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.edu-desc {
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.5;
}

/* EXPERIENCE SECTION */
.exp-section {
  margin: 30px 0;
}

.exp-column {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px;
  transition: border-color 0.3s ease;
}

/* Experience items grid - 2 columns */
.exp-column > h3 {
  grid-column: 1 / -1;
}

.exp-section .exp-column {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  column-gap: 40px;
}

/* Separator line between columns */
.exp-section .exp-column {
  position: relative;
}

.exp-section .exp-column::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 80px;
  bottom: 0;
  width: 1px;
  background: var(--border-color);
  transform: translateX(-50%);
}

/* Last item spans full width if odd number of items */
.exp-item:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

/* Remove separator when only one column on mobile */
@media (max-width: 768px) {
  .exp-section .exp-column::before {
    display: none;
  }
}

.edu-column h3,
.exp-column h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-color);
}

.edu-item,
.exp-item {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.edu-item:last-child,
.exp-item:last-child {
  border-bottom: none;
}

.edu-year,
.exp-year {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 6px;
}

.edu-item h4,
.exp-item h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.institution,
.exp-company {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.edu-desc {
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.5;
}

.exp-duties {
  list-style: none;
  padding: 0;
  margin: 10px 0 0 0;
}

.exp-duties li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.5;
}

.exp-duties li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--text-secondary);
}

/* SKILLS SECTION - ICON GRID */
.skills-section {
  margin: 30px 0;
}

.skills-section h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-color);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.skills-grid > .skill-icon:last-child:nth-child(3n + 1) {
  grid-column: 1 / -1;
}

/* For 2-column responsive layouts (adjust breakpoint to match your media queries) */
@media (max-width: 380px) {
  .skills-grid > .skill-icon:last-child:nth-child(2n + 1) {
    grid-column: 1 / -1;
  }
}

.skill-icon {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 24px 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.skill-icon:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.skill-icon i {
  font-size: 2.8rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.skill-icon:hover i {
  transform: scale(1.15);
}

.skill-icon span {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* Skill Tooltip */
.skill-tooltip {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 10;
}

.skill-tooltip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--text-primary);
}

.skill-icon:hover .skill-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(-12px);
}

/* Icon specific colors on hover - Border and Icon Color */
.skill-icon[data-skill="HTML"]:hover {
  border-color: #e34c26;
}

.skill-icon[data-skill="HTML"]:hover i {
  color: #e34c26;
}

.skill-icon[data-skill="CSS"]:hover {
  border-color: #264de4;
}

.skill-icon[data-skill="CSS"]:hover i {
  color: #264de4;
}

.skill-icon[data-skill="JavaScript"]:hover {
  border-color: #f0db4f;
}

.skill-icon[data-skill="JavaScript"]:hover i {
  color: #f0db4f;
}

.skill-icon[data-skill="React"]:hover {
  border-color: #61dafb;
}

.skill-icon[data-skill="React"]:hover i {
  color: #61dafb;
}

.skill-icon[data-skill="Node.js"]:hover {
  border-color: #68a063;
}

.skill-icon[data-skill="Node.js"]:hover i {
  color: #68a063;
}

.skill-icon[data-skill="Python"]:hover {
  border-color: #306998;
}

.skill-icon[data-skill="Python"]:hover i {
  color: #306998;
}

.skill-icon[data-skill="Git"]:hover {
  border-color: #f34f29;
}

.skill-icon[data-skill="Git"]:hover i {
  color: #f34f29;
}

.skill-icon[data-skill="GitHub"]:hover {
  border-color: #6e5494;
}

.skill-icon[data-skill="GitHub"]:hover i {
  color: #6e5494;
}

.skill-icon[data-skill="TensorFlow"]:hover {
  border-color: #ff6f00;
}

.skill-icon[data-skill="TensorFlow"]:hover i {
  color: #ff6f00;
}

/* PROJECTS SECTION */
.projects-section {
  margin: 30px 0;
}

.projects-section h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-color);
}

.projects-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  column-gap: 40px;
  position: relative;
}

/* Separator line between project columns */

/* Last project spans full width if odd number */
.project-item:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

/* Remove separator when only one column on mobile */
@media (max-width: 768px) {
  .projects-list::before {
    display: none;
  }
}

.project-item {
  padding: 20px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 16px;
  transition: all 0.3s ease;
}

.project-item:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.project-header h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.project-links {
  display: flex;
  gap: 12px;
}

.project-links a {
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: color 0.2s ease;
}

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

.project-item p {
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 12px;
}

.project-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.project-tags span {
  font-size: 0.8rem;
  padding: 4px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-secondary);
}

/*SMOOTH TRANSITIONS */
* {
  scroll-behavior: smooth;
}

/* FOOTER */
footer {
  padding: 30px 16px 24px;
  border-top: 1px solid var(--border-color);
  margin-top: 40px;
}

.footer-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.footer-section h4 {
  color: var(--text-primary);
  font-size: 1.2rem;
  margin-bottom: 10px;
  font-weight: 600;
}

.footer-section p {
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 24px;
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.2s ease;
  font-weight: 500;
  font-size: 0.9rem;
}

.footer-link:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.footer-link i {
  font-size: 1rem;
}

.footer-bottom {
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.footer-bottom p {
  margin: 6px 0;
  font-size: 0.85rem;
}

.footer-tagline {
  color: var(--text-secondary);
  font-style: italic;
}

.footer-tagline i {
  color: #e74c3c;
}

/*RESPONSIVE ADJUSTMENTS */
@media (max-width: 768px) {
  /* Make experience and projects single column on tablets */
  .exp-section .exp-column {
    grid-template-columns: 1fr;
  }

  .projects-list {
    grid-template-columns: 1fr;
  }

  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .skill-icon {
    padding: 18px 10px;
  }

  .skill-icon i {
    font-size: 2.2rem;
  }

  .skill-icon span {
    font-size: 0.8rem;
  }

  .project-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .about-container h2 {
    font-size: 1.3rem;
  }

  .edu-column h3,
  .exp-column h3,
  .skills-section h3,
  .projects-section h3 {
    font-size: 1.2rem;
  }
}

@media (max-width: 600px) {
  .container {
    border-left: none;
    border-right: none;
  }

  .header-nav {
    padding: 20px 12px;
  }

  .banner-title {
    letter-spacing: 1px;
    gap: 10px;
    padding: 0 12px;
  }

  .profile-banner {
    height: 200px;
  }

  .profile-pic {
    width: 110px;
    height: 110px;
    margin-top: -55px;
  }

  .action-buttons {
    flex-wrap: wrap;
  }

  .btn {
    font-size: 14px;
    padding: 0 12px;
  }
}

@media (max-width: 480px) {
  .header-nav {
    padding: 16px 10px;
  }

  .logo-button {
    width: 40px;
    height: 40px;
  }

  .logo-button img {
    width: 40px !important;
    height: 40px !important;
  }

  .header-name {
    font-size: 1.2rem;
  }

  .banner-title {
    letter-spacing: 0.5px;
    gap: 8px;
    padding: 0 10px;
  }

  .profile-info {
    padding: 12px 10px 16px;
  }

  .profile-actions {
    margin: 0 0.5rem;
  }

  .profile-details {
    margin-left: 10px;
  }

  .theme-toggle-btn {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }

  .about-container {
    padding: 0 12px;
  }

  .about-container h2 {
    font-size: 1.2rem;
  }

  .about-container p {
    font-size: 0.9rem;
  }

  .edu-column h3,
  .exp-column h3,
  .skills-section h3,
  .projects-section h3 {
    font-size: 1.1rem;
  }

  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .skill-icon {
    padding: 16px 8px;
  }

  .skill-icon i {
    font-size: 2rem;
  }

  .skill-icon span {
    font-size: 0.75rem;
  }

  .skill-tooltip {
    font-size: 0.7rem;
    padding: 6px 10px;
  }

  .project-item {
    padding: 16px;
  }

  .profile-banner {
    height: 150px;
  }

  .profile-pic {
    width: 90px;
    height: 90px;
    margin-top: -45px;
  }

  .name {
    font-size: 18px;
  }

  .header-name {
    font-size: 18px;
  }

  .edu-item h4,
  .exp-item h4 {
    font-size: 1rem;
  }

  .project-header h4 {
    font-size: 1rem;
  }

  /* --- ADDED: hide header text, show only logo, keep popup centered --- */
  .header-name {
    display: none !important; /* hide the "judslab" text */
  }

  /* ensure logo stays visible and aligned */
  .logo-section {
    align-items: center;
    gap: 0;
  }
  .header-logo {
    margin-left: 8px;
  } /* small spacing if needed */

  /* keep popup nav centered during scaling */
}

@media (max-width: 380px) {
  .header-nav {
    padding: 14px 8px;
  }

  .logo-button {
    width: 36px;
    height: 36px;
  }

  .logo-button img {
    width: 36px !important;
    height: 36px !important;
  }

  .header-name {
    font-size: 1.1rem;
  }

  .banner-title {
    letter-spacing: 0px;
    gap: 6px;
    padding: 0 8px;
  }

  .profile-info {
    padding: 12px 8px 16px;
  }

  .profile-actions {
    margin: 0 0.25rem;
  }

  .theme-toggle-btn {
    width: 30px;
    height: 30px;
    font-size: 14px;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .skill-icon {
    padding: 14px 6px;
  }

  .skill-icon i {
    font-size: 1.8rem;
  }

  .profile-actions {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

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

@media (max-width: 320px) {
  .header-nav {
    padding: 12px 8px;
  }

  .banner-title {
    letter-spacing: -0.5px;
    gap: 4px;
    padding: 0 8px;
    font-size: clamp(1.5rem, 6vw, 3rem);
  }

  .logo-button {
    width: 32px;
    height: 32px;
  }

  .logo-button img {
    width: 32px !important;
    height: 32px !important;
  }

  .header-name {
    font-size: 1rem;
  }

  .theme-toggle-btn {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

  .profile-banner {
    height: 120px;
  }

  .profile-banner h1 {
    font-size: 1.2rem;
  }

  .profile-pic {
    width: 80px;
    height: 80px;
    margin-top: -40px;
  }

  .profile-actions {
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin: 0 0.5rem;
  }

  .action-buttons {
    width: 100%;
    justify-content: center;
    gap: 6px;
  }

  .btn {
    font-size: 12px;
    padding: 0 10px;
    height: 32px;
  }

  .icon-btn-github,
  .icon-btn-lnknd,
  .icon-btn-email {
    width: 32px;
    height: 32px;
  }

  .name {
    font-size: 16px;
  }

  .username {
    font-size: 14px;
  }

  .bio {
    font-size: 14px;
  }

  .profile-meta {
    font-size: 13px;
  }

  .about-container {
    padding: 0 10px;
  }

  .about-des,
  .edu-column,
  .exp-column {
    padding: 12px;
  }

  .about-container h2 {
    font-size: 1.1rem;
  }

  .about-container p {
    font-size: 0.85rem;
  }

  .edu-column h3,
  .exp-column h3,
  .skills-section h3,
  .projects-section h3 {
    font-size: 1rem;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .skill-icon {
    padding: 12px 6px;
  }

  .skill-icon i {
    font-size: 1.6rem;
  }

  .skill-icon span {
    font-size: 0.7rem;
  }

  .project-item {
    padding: 12px;
  }

  .project-header h4 {
    font-size: 0.95rem;
  }

  .project-item p {
    font-size: 0.85rem;
  }

  .project-tags span {
    font-size: 0.7rem;
    padding: 3px 8px;
  }

  footer {
    padding: 20px 12px 16px;
  }

  .footer-section h4 {
    font-size: 1rem;
  }

  .footer-section p {
    font-size: 0.85rem;
  }

  .footer-link {
    font-size: 0.85rem;
    padding: 6px 12px;
  }
}

/* POPUP NAVIGATION BAR */
.popup-nav {
  position: fixed;
  top: 8px;
  left: 50%;
  transform: translateX(-50%) scale(0.8);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 100;
}

.popup-nav.visible {
  opacity: 1;
  transform: translateX(-50%) scale(1);
  pointer-events: all;
}

/* Hide main header when scrolling down */
.header-nav.header-hidden {
  transform: translateY(-100%);
}

.popup-nav-container {
  background: var(--bg-secondary);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 1px 5px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: row;
  gap: 4px;
  align-items: center;
}

.popup-nav-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  text-decoration: none;
}

.popup-nav-item:hover {
  background: var(--btn-hover);
  color: var(--text-primary);
  transform: scale(1.08);
}

.popup-nav-item i {
  font-size: 15px;
}

/* Tooltip for nav items */
.popup-nav-item::before {
  content: attr(data-tooltip);
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  font-weight: 500;
}

.popup-nav-item:hover::before {
  opacity: 1;
}

/* Responsive adjustments for popup nav */
@media (max-width: 768px) {
  .popup-nav-container {
    padding: 5px 8px;
    border-radius: 18px;
  }

  .popup-nav-item {
    width: 20px;
    height: 20px;
  }

  .popup-nav-item i {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .popup-nav-container {
    padding: 4px 6px;
    border-radius: 16px;
    gap: 2px;
  }

  .popup-nav-item {
    width: 18px;
    height: 18px;
  }

  .popup-nav-item i {
    font-size: 13px;
  }

  .popup-nav-item::before {
    font-size: 0.65rem;
    padding: 3px 6px;
  }
}

@media (max-width: 380px) {
  .popup-nav-container {
    padding: 3px 5px;
    gap: 1px;
  }

  .popup-nav-item {
    width: 18px;
    height: 18px;
  }

  .popup-nav-item i {
    font-size: 12px;
  }

  .popup-nav-item::before {
    display: none;
  }
}