:root {
  --primary-color: #4caf50;
  --primary-color-dark: #3d8b40;
  --secondary-color: #12372a;
  --dark-color: #000000;
  --light-color: #f4f4f4;
  --accent-color: #64ffda;
  --header-height: 80px;
  --footer-padding: 2rem 10% 1rem;
  --transition-slow: 0.5s ease;
  --transition-medium: 0.3s ease;
  --transition-fast: 0.2s ease;
}

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

body {
  font-family: "Montserrat", sans-serif;
  line-height: 1.6;
  color: var(--light-color);
  background-color: var(--dark-color);
  overflow-x: hidden;
}

/* Common styles */
.btn-container {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Header styles */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1rem 10%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(10px);
  /* background-color: rgba(0, 0, 0, 0.8); */
  z-index: 1000;
  transition: all var(--transition-medium);
}

header.scrolled {
  padding: 0.5rem 10%;
  background-color: rgba(0, 0, 0, 0.95);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
}

header a:first-child {
  display: flex;
  align-items: center;
  text-decoration: none;
}

nav ul {
  display: flex;
  list-style: none;
  transition: all var(--transition-slow);
}

nav ul li {
  margin: 0 1rem;
}

nav ul li a {
  text-decoration: none;
  color: var(--light-color);
  transition: color var(--transition-medium), transform var(--transition-medium);
  letter-spacing: 1px;
  position: relative;
  padding: 0.5rem 0;
}

nav ul li a::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 2px;
  background-color: var(--primary-color);
  bottom: -5px;
  left: 0;
  transform: scaleX(0);
  transition: transform var(--transition-medium);
}

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

nav ul li a:hover::after,
nav ul li a.active::after {
  transform: scaleX(1);
}

#menu-toggle {
  display: none;
}

#menu-toggle:checked + .hamburger span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

#menu-toggle:checked + .hamburger span:nth-child(2) {
  opacity: 0;
}

#menu-toggle:checked + .hamburger span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.logo {
  width: 180px;
  height: auto;
  color: var(--primary-color);
}

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

.github {
  display: none;
}

/* Hamburger Menu for Mobile */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
  z-index: 1100;
}

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

.github-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background-color: transparent;
  transition: background-color var(--transition-medium),
    box-shadow var(--transition-medium);
  color: var(--primary-color);
  font-size: 1.8rem;
}

.github-btn:hover {
  background-color: var(--primary-color);
  color: var(--dark-color);
  box-shadow: 0 0 10px 5px rgba(76, 175, 80, 0.5);
}

/* Landing section */
.landing {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.landing-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  width: 100%;
  margin-top: 80px;
}

.landing-text {
  flex: 1;
  padding-right: 2rem;
  font-family: "Courier Prime", monospace;
}

.landing-text h1 {
  font-size: 4rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
  white-space: nowrap;
  width: fit-content;
  letter-spacing: 0.15em;
  position: relative;
}

.landing-text p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  max-width: 600px;
}

.cv-btn,
.contact-btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--primary-color);
  color: white;
  text-decoration: none;
  border-radius: 5px;
  transition: all var(--transition-medium);
  border: 2px solid var(--primary-color);
  font-weight: 600;
  letter-spacing: 1px;
}

.cv-btn:hover {
  background-color: var(--primary-color-dark);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
}

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

.contact-btn:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
}

.landing-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-pic {
  max-width: 350px;
  border-radius: 50%;
  box-shadow: 0 0 30px rgba(76, 175, 80, 0.3);
  transition: all var(--transition-slow);
  border: 5px solid var(--primary-color);
}

.profile-pic:hover {
  transform: scale(1.05);
  box-shadow: 0 0 40px rgba(76, 175, 80, 0.5);
}

.landing-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
  opacity: 0.5;
  background: url("./assets/landing.jpg") center/cover no-repeat fixed;
}

.landing-bg::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 1), rgba(0, 0, 0, 0));
  z-index: 1;
}

.scroll-down {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.scroll-down a {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.scroll-down span {
  display: block;
  width: 20px;
  height: 20px;
  border-bottom: 2px solid var(--primary-color);
  border-right: 2px solid var(--primary-color);
  transform: rotate(45deg);
  margin: -10px;
  animation: scrollDown 2s infinite;
}

.scroll-down span:nth-child(2) {
  animation-delay: 0.2s;
}

.scroll-down span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes scrollDown {
  0% {
    opacity: 0;
    transform: rotate(45deg) translate(-20px, -20px);
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: rotate(45deg) translate(20px, 20px);
  }
}

/* Education Section */
.education {
  padding: 6rem 2rem 4rem;
  background: linear-gradient(
    to bottom,
    var(--dark-color),
    var(--secondary-color)
  );
  color: white;
  position: relative;
}

.education h2 {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary-color);
  position: relative;
  padding-bottom: 1rem;
}

.education h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.timeline {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.timeline::after {
  content: "";
  position: absolute;
  width: 6px;
  background-color: var(--primary-color);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -3px;
  border-radius: 3px;
}

.timeline-item {
  padding: 10px 40px;
  position: relative;
  background-color: inherit;
  width: 50%;
  box-sizing: border-box;
}

.timeline-item::after {
  content: "";
  position: absolute;
  width: 25px;
  height: 25px;
  right: -17px;
  background-color: var(--primary-color);
  border: 4px solid var(--dark-color);
  top: 15px;
  border-radius: 50%;
  z-index: 1;
  transition: all var(--transition-medium);
}

.timeline-item:hover::after {
  transform: scale(1.2);
  box-shadow: 0 0 15px rgba(76, 175, 80, 0.7);
}

.left {
  left: 0;
}

.right {
  left: 50%;
}

.right::after {
  left: -16px;
}

.timeline-content {
  padding: 20px 30px;
  background-color: rgba(255, 255, 255, 0.1);
  position: relative;
  border-radius: 6px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  transition: all var(--transition-medium);
}

.timeline-content:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
  background-color: rgba(255, 255, 255, 0.15);
}

.timeline-content h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.timeline-content p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
}

/* Resume Section Styles */
.gradient-bg {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    var(--secondary-color) 5%,
    transparent 90%,
    var(--dark-color) 100%
  );
  z-index: -1;
}

/* Resume Section Styles */
.resume {
  padding: 6rem 1rem 4rem;
  position: relative;
  overflow: hidden;
}

.resume::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
        135deg,
        var(--secondary-color) 25%,
        transparent 25%
      ) -50px 0,
    linear-gradient(225deg, var(--secondary-color) 25%, transparent 25%) -50px 0,
    linear-gradient(315deg, var(--secondary-color) 25%, transparent 25%),
    linear-gradient(45deg, var(--secondary-color) 25%, transparent 25%);
  background-size: 100px 100px;
  background-color: #106144;
  opacity: 0.1;
  z-index: -1;
}

.resume::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle,
    rgba(100, 255, 218, 0.1) 0%,
    rgba(10, 25, 47, 0) 70%
  );
  z-index: -1;
}

.gradient-bg {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    var(--secondary-color) 5%,
    transparent 90%,
    var(--dark-color) 100%
  );
  z-index: -1;
}

.resume h2 {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary-color);
  position: relative;
  padding-bottom: 1rem;
}

.resume h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.resume-content {
  max-width: 1200px;
  margin: 0 auto;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(5px);
}

.resume-content::before {
  content: "<skills>";
  position: absolute;
  top: 15px;
  left: 25px;
  font-family: "Courier Prime", monospace;
  color: var(--primary-color);
  font-size: 1.2rem;
  opacity: 0.7;
}

.resume-content::after {
  content: "</skills>";
  position: absolute;
  bottom: 15px;
  right: 25px;
  font-family: "Courier Prime", monospace;
  color: var(--primary-color);
  font-size: 1.2rem;
  opacity: 0.7;
}

.resume-left {
  flex: 1;
  padding-right: 2rem;
  min-width: 300px;
  border-right: 1px dashed rgba(76, 175, 80, 0.3);
}

.profile-container {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  border: 3px solid var(--primary-color);
  overflow: hidden;
  transition: box-shadow var(--transition-medium),
    transform var(--transition-medium);
  position: relative;
}

.profile-container:hover {
  box-shadow: 0 0 25px rgba(76, 175, 80, 0.7);
  transform: scale(1.05);
}

.profile-container::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    to bottom right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(45deg);
  transition: all 0.7s ease;
}

.profile-container:hover::after {
  left: 100%;
  top: 100%;
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

.profile-container:hover .profile-image {
  transform: scale(1.1);
}

.resume-header h3 {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 0.8rem;
  text-align: center;
  text-shadow: 0 0 5px rgba(76, 175, 80, 0.5);
}

.resume-header p {
  font-size: 1.1rem;
  opacity: 0.9;
  text-align: center;
  line-height: 1.6;
}

.social-media {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
  border-top: 2px solid rgba(76, 175, 80, 0.3);
  padding-top: 1.5rem;
}

.social-media a {
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--primary-color);
  font-size: 1.3rem;
  transition: all var(--transition-medium);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(76, 175, 80, 0.2);
}

.social-media a:hover {
  transform: translateY(-5px);
  background-color: var(--primary-color);
  color: white;
  box-shadow: 0 5px 15px rgba(76, 175, 80, 0.5);
}

.resume-right {
  flex: 2;
  min-width: 300px;
  padding-left: 2rem;
}

.resume-section {
  margin-bottom: 3rem;
}

.resume-section h4 {
  font-size: 1.6rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  border-bottom: 2px solid rgba(76, 175, 80, 0.3);
  padding-bottom: 0.5rem;
  display: inline-block;
  position: relative;
}

.resume-section h4::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 50px;
  height: 2px;
  background-color: var(--primary-color);
}

/* Field of Expertise - Skill Cards */
.skills-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
}

.skill-card {
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 1.5rem;
  width: calc(33.333% - 1rem);
  min-width: 220px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
  /* transition: all var(--transition-medium); */
  border-top: 3px solid var(--primary-color);
  position: relative;
  overflow: hidden;
  flex-grow: 1;
}

.skill-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(76, 175, 80, 0.1) 0%,
    transparent 100%
  );
  z-index: -1;
}

.skill-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.25);
  background-color: rgba(255, 255, 255, 0.1);
}

.skill-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  text-align: center;
}

.skill-card h5 {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  text-align: center;
  color: var(--light-color);
}

.skill-stars {
  display: flex;
  justify-content: center;
  gap: 0.3rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.skill-details {
  font-size: 0.9rem;
  text-align: center;
  opacity: 0.9;
}

/* Programming Languages - Hexagons */
.skill-hexagons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-top: 1rem;
}

.hexagon-item {
  position: relative;
  width: 120px;
  height: 140px;
  margin: 0 15px 30px;
  cursor: pointer;
  perspective: 1000px;
}

.hexagon {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.8s;
}

.hexagon::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.05);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  transition: all var(--transition-medium);
  z-index: -1;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.hexagon-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 1rem;
  text-align: center;
}

.hexagon-content i {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  transition: all var(--transition-medium);
}

.hexagon-content span {
  font-size: 0.9rem;
  transition: all var(--transition-medium);
}

.hexagon-item:hover .hexagon::before {
  background-color: rgba(76, 175, 80, 0.2);
  box-shadow: 0 10px 25px rgba(76, 175, 80, 0.3);
}

.hexagon-item:hover .hexagon-content i {
  color: var(--light-color);
  transform: scale(1.2);
}

.hexagon-item[data-level="9"] .hexagon::before,
.hexagon-item[data-level="8"] .hexagon::before {
  background-color: rgba(76, 175, 80, 0.3);
}

.hexagon-item[data-level="6"] .hexagon::before,
.hexagon-item[data-level="5"] .hexagon::before {
  background-color: rgba(76, 175, 80, 0.15);
}

.hexagon-item[data-level="1"] .hexagon::before {
  background-color: rgba(76, 175, 80, 0.05);
}

/* Technologies & Tools */
.tech-tools-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  justify-content: center;
}

.tech-item {
  width: 110px;
  height: 110px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  /* transition: all 0.3s ease; */
  border: 1px solid rgba(76, 175, 80, 0.1);
  position: relative;
  overflow: hidden;
}

.tech-item::before {
  content: attr(data-proficiency);
  position: absolute;
  top: 0;
  left: 0;
  background-color: var(--primary-color);
  color: white;
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-bottom-right-radius: 8px;
  opacity: 0;
  transform: translateY(-100%);
  transition: all 0.3s ease;
}

.tech-item:hover::before {
  opacity: 1;
  transform: translateY(0);
}

.tech-item i {
  font-size: 2.2rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  transition: all 0.3s ease;
}

.tech-item span {
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.tech-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  background-color: rgba(255, 255, 255, 0.1);
}

.tech-item:hover i {
  transform: scale(1.2);
}

.tech-item[data-proficiency="Expert"] {
  border-top: 3px solid #4caf50;
}

.tech-item[data-proficiency="Advanced"] {
  border-top: 3px solid #8bc34a;
}

.tech-item[data-proficiency="Intermediate"] {
  border-top: 3px solid #cddc39;
}

.tech-item[data-proficiency="Beginner"] {
  border-top: 3px solid #ffeb3b;
}

/* Soft Skills - List Style */
.soft-skills-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.soft-skill-item {
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  border: 1px solid rgba(76, 175, 80, 0.15);
  backdrop-filter: blur(10px);
  transition: all var(--transition-medium);
}

.soft-skill-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  background-color: rgba(255, 255, 255, 0.1);
}

.soft-skill-icon {
  color: var(--primary-color);
  font-size: 1.8rem;
  min-width: 45px;
  display: flex;
  justify-content: center;
}

.soft-skill-content h5 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--light-color);
}

.soft-skill-content p {
  font-size: 0.9rem;
  opacity: 0.8;
  line-height: 1.5;
}

/* Responsive adjustments */
@media screen and (max-width: 768px) {
  .soft-skills-list {
    grid-template-columns: 1fr;
  }
}

@media screen and (max-width: 992px) {
  .skill-card {
    width: calc(50% - 1rem);
  }

  .hexagon-item {
    width: 100px;
    height: 115px;
  }

  .tech-item {
    width: 100px;
    height: 100px;
  }
}

@media screen and (max-width: 768px) {
  .resume-content {
    flex-direction: column;
  }

  .resume-left {
    border-right: none;
    border-bottom: 1px dashed rgba(76, 175, 80, 0.3);
    padding-right: 0;
    padding-bottom: 2rem;
    margin-bottom: 2rem;
  }

  .resume-right {
    padding-left: 0;
  }

  .skill-card {
    width: 100%;
  }

  .skills-container {
    gap: 1rem;
  }

  .skill-hexagons {
    gap: 1rem;
  }

  .hexagon-item {
    margin: 0 10px 20px;
  }
}

/* Experience Section */
.experience-section {
  padding: 6rem 5% 4rem;
  background: linear-gradient(
    to bottom,
    var(--dark-color),
    var(--secondary-color)
  );
  position: relative;
}

.experience-section h2 {
  font-size: 2.5rem;
  text-align: center;
  color: var(--primary-color);
  margin-bottom: 3rem;
  position: relative;
  padding-bottom: 1rem;
}

.experience-section h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
  gap: 1rem;
}

.tab {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--light-color);
  border: none;
  padding: 1rem 2rem;
  border-radius: 25px;
  cursor: pointer;
  transition: all var(--transition-medium);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 1px;
}

.tab:hover,
.tab.active {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
}

.experience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.experience-item {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 1.5rem;
  transition: transform var(--transition-medium),
    box-shadow var(--transition-medium);
  border-top: 3px solid var(--primary-color);
}

.experience-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  background-color: rgba(255, 255, 255, 0.15);
}

.experience-item h3 {
  font-size: 1.3rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.experience-item .company {
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.experience-item .date {
  font-style: italic;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.tab-content {
  animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Portfolio Section */
.portfolio {
  padding: 6rem 2rem 4rem;
  background: linear-gradient(
    to bottom,
    var(--secondary-color),
    var(--dark-color)
  );
  color: white;
  position: relative;
}

.portfolio h2 {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary-color);
  position: relative;
  padding-bottom: 1rem;
}

.portfolio h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.portfolio-filter {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  padding: 0.5rem 1.5rem;
  background-color: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 25px;
  color: var(--light-color);
  cursor: pointer;
  transition: all var(--transition-medium);
  font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.portfolio-item {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
  transition: transform var(--transition-medium);
}

.portfolio-item:hover {
  transform: translateY(-10px);
}

.portfolio-overlay {
  position: relative;
  overflow: hidden;
}

.portfolio-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

.portfolio-overlay:hover .portfolio-image {
  transform: scale(1.1);
}

.overlay-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(76, 175, 80, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.portfolio-overlay:hover .overlay-content {
  opacity: 1;
}

.overlay-icons {
  display: flex;
  gap: 1rem;
}

.overlay-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--primary-color);
  font-size: 1.2rem;
  transition: all var(--transition-medium);
}

.overlay-icon:hover {
  transform: scale(1.2);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.portfolio-content {
  padding: 1.5rem;
}

.portfolio-content h3 {
  font-size: 1.3rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.portfolio-content p {
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.portfolio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.portfolio-tag {
  background-color: rgba(76, 175, 80, 0.2);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  transition: background-color var(--transition-medium);
}

.portfolio-item:hover .portfolio-tag {
  background-color: rgba(76, 175, 80, 0.4);
}

.portfolio-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--primary-color);
  color: white;
  text-decoration: none;
  border-radius: 5px;
  transition: all var(--transition-medium);
  font-weight: 500;
}

.portfolio-link:hover {
  background-color: var(--primary-color-dark);
  transform: translateY(-3px);
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

/* Contact Section */
.contact {
  padding: 6rem 2rem 4rem;
  background-color: var(--dark-color);
  position: relative;
}

.contact h2 {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary-color);
  position: relative;
  padding-bottom: 1rem;
}

.contact h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.contact-container {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
  gap: 2rem;
  flex-wrap: wrap;
}

.contact-info {
  flex: 1;
  min-width: 300px;
  background-color: rgba(255, 255, 255, 0.1);
  padding: 2rem;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-item i {
  width: 40px;
  height: 40px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.2rem;
}

.contact-item p {
  font-size: 1.1rem;
}

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

.social-links a {
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.2rem;
  transition: all var(--transition-medium);
}

.social-links a:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
}

.contact-form {
  flex: 2;
  min-width: 300px;
  background-color: rgba(255, 255, 255, 0.1);
  padding: 2rem;
  border-radius: 10px;
}

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  background-color: rgba(255, 255, 255, 0.05);
  border: none;
  border-bottom: 2px solid rgba(255, 255, 255, 0.2);
  color: var(--light-color);
  font-size: 1rem;
  resize: none;
  transition: all var(--transition-medium);
}

.form-group textarea {
  min-height: 150px;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-bottom-color: var(--primary-color);
  background-color: rgba(255, 255, 255, 0.1);
}

.focus-border {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: all 0.4s ease;
}

.form-group input:focus ~ .focus-border,
.form-group textarea:focus ~ .focus-border {
  width: 100%;
}

.submit-btn {
  padding: 0.75rem 2rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 1px;
  transition: all var(--transition-medium);
}

.submit-btn:hover {
  background-color: var(--primary-color-dark);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
}

/* Footer Styles */
footer {
  background-color: var(--dark-color);
  color: var(--light-color);
  padding: 3rem 10% 1rem;
  position: relative;
  overflow: hidden;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--light-color);
  text-decoration: none;
  transition: color var(--transition-medium);
}

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

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

.footer-social a {
  color: var(--light-color);
  font-size: 1.2rem;
  transition: all var(--transition-medium);
}

.footer-social a:hover {
  color: var(--primary-color);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid rgba(244, 244, 244, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.9rem;
  color: rgba(244, 244, 244, 0.7);
}

.back-to-top {
  width: 40px;
  height: 40px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: all var(--transition-medium);
  opacity: 0;
  visibility: hidden;
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 99;
}

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

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(76, 175, 80, 0.5);
}

/* Responsive adjustments */
@media screen and (max-width: 1200px) {
  .experience-section {
    padding: 4rem 5%;
  }

  .experience-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }

  .landing-content {
    flex-direction: column;
    text-align: center;
  }

  .landing-text {
    padding-right: 0;
    margin-bottom: 2rem;
  }

  .landing-text h1 {
    margin: 0 auto 1rem;
  }

  .btn-container {
    justify-content: center;
  }
}

@media screen and (max-width: 1024px) {
  :root {
    --header-height: 70px;
  }

  .github-btn {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
  }

  .experience-section {
    padding: 4rem 10%;
  }

  .experience-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }

  .resume-content {
    flex-direction: column;
  }

  .resume-left,
  .resume-right {
    padding-right: 0;
    width: 100%;
  }

  .resume-left {
    margin-bottom: 2rem;
  }

  .landing-text h1 {
    font-size: 3.5rem;
  }
}

@media screen and (max-width: 768px) {
  :root {
    --header-height: 60px;
    --footer-padding: 2rem 5% 1rem;
  }

  header {
    padding: 0.8rem 5%;
  }

  header.scrolled {
    padding: 0.5rem 5%;
  }

  nav ul {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.95);
    padding: 80px 0 1rem 0;
    z-index: -1;
    transition: right 0.5s ease;
    align-items: center;
  }

  #menu-toggle:checked + .hamburger + nav ul {
    display: flex;
    right: 0;
  }

  .logo {
    width: 150px;
  }

  .github {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: transparent;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 0 0 transparent;
  }

  .hamburger {
    position: relative;
    display: flex;
  }

  nav ul li {
    margin: 1rem 0;
    text-align: center;
  }

  nav ul li a {
    font-size: 1.2rem;
  }

  .github-btn {
    display: none;
  }

  .landing-text {
    padding-right: 0;
  }

  .landing-text h1 {
    font-size: 3rem;
  }

  .landing-text p {
    font-size: 1rem;
  }

  .resume {
    padding: 4rem 1rem 2rem;
  }

  .resume h2 {
    font-size: 2rem;
  }

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

  .profile-image {
    width: 100%;
    height: 100%;
  }

  .resume-header h3 {
    font-size: 1.8rem;
  }

  .resume-header p {
    font-size: 1rem;
  }

  .resume-section h4 {
    font-size: 1.3rem;
  }

  .skill-name {
    min-width: 100px;
    font-size: 0.9rem;
  }

  .experience-section {
    padding: 4rem 5%;
  }

  .experience-section h2 {
    font-size: 2rem;
  }

  .experience-item h3 {
    font-size: 1.2rem;
  }

  .experience-item .company {
    font-size: 1rem;
  }

  .experience-item .date {
    font-size: 0.9rem;
  }

  .experience-grid {
    grid-template-columns: 1fr;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .contact-container {
    flex-direction: column;
  }

  .footer-content {
    flex-direction: column;
    gap: 1.5rem;
  }

  .footer-links {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }

  .tabs {
    flex-wrap: wrap;
  }

  .tab {
    width: 100%;
    margin-bottom: 0.5rem;
  }

  .portfolio-filter {
    flex-wrap: wrap;
  }

  .filter-btn {
    margin-bottom: 0.5rem;
  }
}

@media screen and (max-width: 480px) {
  :root {
    --header-height: 50px;
  }

  .landing {
    padding: 2rem 1rem;
  }

  .landing-text h1 {
    font-size: 2.5rem;
  }

  .landing-text p {
    font-size: 0.9rem;
  }

  .btn-container {
    flex-direction: column;
    width: 100%;
    gap: 1rem;
  }

  .cv-btn,
  .contact-btn {
    width: 100%;
    text-align: center;
  }

  .timeline::after {
    left: 31px;
  }

  .timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }

  .timeline-item::after {
    left: 15px;
  }

  .right {
    left: 0%;
  }

  .resume-content {
    padding: 1rem;
  }

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

  .resume-header h3 {
    font-size: 1.5rem;
  }

  .resume-header p {
    font-size: 0.9rem;
  }

  .skill-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .skill-name {
    margin-bottom: 0.3rem;
  }

  .skill-bar {
    width: 100%;
  }

  .tabs {
    flex-wrap: wrap;
  }

  .tab {
    margin: 0.5rem 0;
    padding: 0.5rem 1rem;
    width: 100%;
  }

  footer {
    padding: 2rem 5% 1rem;
  }

  .filter-btn {
    width: 100%;
  }
}

@media screen and (max-width: 320px) {
  .landing-text h1 {
    font-size: 2rem;
  }

  .landing-text p {
    font-size: 0.8rem;
  }

  .education h2,
  .experience-section h2,
  .portfolio h2 {
    font-size: 1.8rem;
  }

  .timeline-content h3 {
    font-size: 1.2rem;
  }

  .resume {
    padding: 1rem;
  }

  .profile-container {
    width: 120px;
    height: 120px;
  }

  .profile-image {
    width: 100%;
    height: 100%;
  }

  .resume h2 {
    font-size: 1.8rem;
  }

  .resume-content {
    padding: 1rem;
  }

  .resume-left,
  .resume-right {
    min-width: 250px;
  }

  .resume-right {
    margin-top: 2rem;
  }

  .profile-image {
    width: 120px;
    height: 120px;
  }

  .resume-header h3 {
    font-size: 1.2rem;
  }

  .resume-header p {
    font-size: 0.8rem;
  }

  .skill-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .skill-name {
    min-width: 80px;
    font-size: 0.8rem;
  }

  .skill-bar {
    width: 100%;
  }
}