/*===== HERO SECTION =====*/
.hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 6rem 0 3rem;
  gap: 2rem;
  position: relative;
  overflow: hidden;
  min-height: 100vh;
}

.hero__content {
  flex: 1 1 350px;
  min-width: 300px;
  z-index: 1;
  position: relative;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border-radius: 1.5rem;
  box-shadow: 0 8px 32px rgba(34, 34, 59, 0.15);
  padding: 2rem;
}

.hero__title {
  font-family: 'Montserrat', 'Poppins', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -1px;
  color: #22223b;
}

.hero__subtitle {
  font-family: 'Roboto', 'Poppins', sans-serif;
  font-size: 1.25rem;
  color: #4a4e69;
  margin-bottom: 2rem;
  font-weight: 500;
}

.hero__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.hero__img-wrapper {
  flex: 0 0 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  z-index: 2;
  position: relative;
}

.hero__img {
  width: 200px;
  height: 200px;
  object-fit: cover;
  object-position: center top;
  border-radius: 50%;
  border: 6px solid #fff;
  box-shadow: 0 8px 32px rgba(34, 34, 59, 0.15), 0 2px 8px rgba(0, 0, 0, 0.08);
  background: #fff;
  display: block;
  z-index: 2;
  position: relative;
}

.hero__img:hover,
.hero__img:focus {
  box-shadow: 0 12px 40px rgba(34, 34, 59, 0.25), 0 4px 16px rgba(0, 0, 0, 0.12);
}

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

.hero__social-icon {
  font-size: 2rem;
  color: #22223b;
  transition: color 0.2s;
}

.hero__social-icon:hover,
.hero__social-icon:focus {
  color: var(--first-color);
}

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(120deg, #6366f1 0%, #ff6b6b 100%);
  animation: gradientMove 8s ease-in-out infinite alternate;
  opacity: 0.85;
}

.hero__wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  width: 100%;
  z-index: 2;
}

.hero__scroll-indicator {
  position: absolute;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  z-index: 2;
  text-align: center;
  cursor: pointer;
  text-decoration: none;
  outline: none;
}

.hero__scroll-arrow {
  display: inline-block;
  font-size: 2.2rem;
  color: var(--first-color);
  animation: scrollBounce 1.4s infinite;
  transition: color 0.2s;
}

.hero__scroll-indicator:hover .hero__scroll-arrow,
.hero__scroll-indicator:focus .hero__scroll-arrow {
  color: #22223b;
}

/*===== ABOUT SECTION =====*/
.about__container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2rem;
  justify-content: center;
  row-gap: 2rem;
  text-align: center;
}

.about__img-wrapper {
  flex: 0 0 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about__img {
  width: 180px;
  height: 180px;
  object-fit: cover;
  border-radius: 1rem;
  border: 4px solid #fff;
  box-shadow: 0 4px 24px rgba(34, 34, 59, 0.10);
  background: #fff;
  padding: 0.5rem;
  justify-self: center;
}

.about__content {
  flex: 1 1 300px;
  min-width: 250px;
}

.about__subtitle {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  color: #22223b;
  margin-bottom: 0.5rem;
}

.about__text {
  font-size: 1.1rem;
  color: #4a4e69;
  line-height: 1.7;
}

/*===== SKILLS SECTION =====*/
.skills__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  justify-content: center;
  max-width: 1200px;
  margin: 0 auto;
  row-gap: 2rem;
  text-align: center;
}

.skills__group {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 1.5rem;
  box-shadow: 0 4px 20px rgba(34, 34, 59, 0.08);
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid rgba(99, 102, 241, 0.1);
  overflow: hidden;
  flex: 1 1 220px;
  min-width: 220px;
  max-width: 320px;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 1.5rem 1rem;
  margin-bottom: 1rem;
}

.skills__group.active {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(34, 34, 59, 0.15);
}

.skills__category {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.3rem;
  color: var(--first-color);
  margin: 0;
  padding: 1.5rem 2rem;
  font-weight: 700;
  text-align: center;
  position: relative;
  cursor: pointer;
  transition: all 0.3s;
  background: linear-gradient(135deg, #f8f9ff 0%, #ffffff 100%);
  user-select: none;
  margin-bottom: 1rem;
}

.skills__category:hover {
  background: linear-gradient(135deg, #eef2ff 0%, #f8f9ff 100%);
  color: #6366f1;
}

.skills__category::after {
  content: '\f078';
  font-family: 'Font Awesome 5 Free';
  font-weight: 900;
  position: absolute;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  transition: transform 0.3s;
  font-size: 1rem;
  color: var(--first-color);
}

.skills__group.active .skills__category::after {
  transform: translateY(-50%) rotate(180deg);
}

.skills__category::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--first-color), #6366f1);
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.3s;
}

.skills__group.active .skills__category::before {
  opacity: 1;
}

.skills__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), padding 0.5s;
  padding: 0 1.5rem;
}

.skills__group.active .skills__content {
  max-height: 2000px;
  padding: 1rem 1.5rem 2rem;
}

.skills__data {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: linear-gradient(135deg, #f8f9ff 0%, #ffffff 100%);
  margin-bottom: 1.5rem;
  padding: 1.5rem 1rem;
  border-radius: 1rem;
  box-shadow: 0 2px 12px rgba(34, 34, 59, 0.06);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.5s forwards;
  justify-content: space-between;
  align-items: center;
  font-weight: var(--font-semi);
  padding: 0.5rem 1rem;
  margin-bottom: var(--mb-4);
  border-radius: 0.5rem;
  box-shadow: 0px 4px 25px rgba(14, 36, 49, 0.15);
}

.skills__data:nth-child(1) {
  animation-delay: 0.1s;
}

.skills__data:nth-child(2) {
  animation-delay: 0.2s;
}

.skills__data:nth-child(3) {
  animation-delay: 0.3s;
}

.skills__data:nth-child(4) {
  animation-delay: 0.4s;
}

.skills__data:nth-child(5) {
  animation-delay: 0.5s;
}

.skills__data::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--first-color), #6366f1);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}

.skills__data:hover::before {
  transform: scaleX(1);
}

.skills__data:focus,
.skills__data:hover {
  background: linear-gradient(135deg, #eef2ff 0%, #f8f9ff 100%);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
  transform: translateY(-4px) scale(1.02);
}

.skills__progress-circle {
  position: relative;
  width: 120px;
  height: 120px;
  margin-bottom: 1rem;
}

.skills__progress-circle svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.skills__progress-bg {
  fill: none;
  stroke: #e0e7ff;
  stroke-width: 8;
}

.skills__progress-bar {
  fill: none;
  stroke: url(#skillGradient);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 339.292;
  stroke-dashoffset: 339.292;
  transition: stroke-dashoffset 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.skills__data:hover .skills__progress-bar,
.skills__data:focus .skills__progress-bar {
  stroke-dashoffset: calc(339.292 - (339.292 * var(--progress) / 100));
}

.skills__progress-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--first-color);
  font-family: 'Montserrat', sans-serif;
}

.skills__names {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1.2rem;
  font-weight: 600;
  color: #22223b;
  margin-bottom: 0.5rem;
}

.skills__icon {
  font-size: 1.8rem;
  color: var(--first-color);
  background: linear-gradient(135deg, #eef2ff, #ddd6fe);
  padding: 0.6rem;
  border-radius: 0.8rem;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
  transition: transform 0.3s;
  margin-right: var(--mb-2);
}

.skills__data:hover .skills__icon {
  transform: scale(1.1) rotate(5deg);
}

.skills__desc {
  font-size: 0.95rem;
  color: #6b7280;
  text-align: center;
  margin-top: 0.5rem;
  font-style: italic;
}

.skills__bar {
  position: absolute;
  left: 0;
  bottom: 0;
  background-color: var(--first-color);
  height: 0.25rem;
  border-radius: 0.5rem;
  z-index: var(--z-back);
  display: none;
}

.skills__html {
  width: 90%;
}

.skills__cprogram {
  width: 95%;
}

.skills__java {
  width: 60%;
}

.skills__python {
  width: 65%;
}

.skills__Cpp {
  width: 85%;
}

.skills__Linux {
  width: 85%;
}

.skills__Microcontroller {
  width: 50%;
}

.skills__img {
  border-radius: 0.5rem;
}

.skills__percentage {
  display: none;
}

.skills__subtitle {
  margin-bottom: var(--mb-2);
}

.skills__text {
  margin-bottom: var(--mb-4);
}

.skills__data[data-level="expert"] .skills__progress-bar {
  stroke: url(#expertGradient);
}

.skills__data[data-level="advanced"] .skills__progress-bar {
  stroke: url(#advancedGradient);
}

.skills__data[data-level="intermediate"] .skills__progress-bar {
  stroke: url(#intermediateGradient);
}

/*===== PROJECTS SECTION =====*/
.projects__container {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
}

.project__img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  object-position: center;
  border-radius: 1rem 1rem 0 0;
  box-shadow: 0 2px 8px rgba(34, 34, 59, 0.08);
  background: #fff;
  display: block;
  transition: transform 0.4s cubic-bezier(.77, 0, .18, 1), box-shadow 0.3s;
}

.project__card:hover .project__img,
.project__img:focus {
  transform: scale(1.07) rotate(-1deg);
  box-shadow: 0 8px 32px rgba(34, 34, 59, 0.13);
  z-index: 1;
}

.project__info {
  padding: 1.2rem 1rem 1rem 1rem;
}

.project__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #22223b;
  margin-bottom: 0.3rem;
}

.project__desc {
  font-size: 1rem;
  color: #4a4e69;
  margin-bottom: 0.7rem;
}

.project__link {
  color: var(--first-color);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: underline;
  transition: color 0.2s;
}

.project__link:hover,
.project__link:focus {
  color: #22223b;
}

.project__details-btn {
  display: inline-block;
  margin-top: 0.7rem;
  padding: 0.5rem 1.2rem;
  background: var(--first-color);
  color: #fff;
  border: none;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
  box-shadow: 0 1px 4px rgba(34, 34, 59, 0.07);
}

.project__details-btn:hover,
.project__details-btn:focus {
  background: #22223b;
  color: #fff;
  outline: none;
}

.project__tech-icons,
.project__modal-tech-icons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.5rem 0 0.5rem 0;
  align-items: center;
}

.project__tech-icon,
.project__modal-tech-icon {
  font-size: 1.3rem;
  color: #4a4e69;
  background: #f0e9ff;
  border-radius: 0.4rem;
  padding: 0.2rem 0.4rem;
  display: flex;
  align-items: center;
  transition: background 0.2s, color 0.2s;
}

.project__tech-icon[data-tech="Python"],
.project__modal-tech-icon[data-tech="Python"] {
  color: #3572A5;
}

.project__tech-icon[data-tech="C"],
.project__modal-tech-icon[data-tech="C"] {
  color: #555;
}

.project__tech-icon[data-tech="Java"],
.project__modal-tech-icon[data-tech="Java"] {
  color: #b07219;
}

.project__tech-icon[data-tech="Linux"],
.project__modal-tech-icon[data-tech="Linux"] {
  color: #22223b;
}

.project__tech-icon[data-tech="AI"],
.project__modal-tech-icon[data-tech="AI"] {
  color: #7c3aed;
}

.project__tech-icon[data-tech="Networking"],
.project__modal-tech-icon[data-tech="Networking"] {
  color: #0ea5e9;
}

.project__modal-img {
  width: 100%;
  max-width: 420px;
  border-radius: 1rem;
  box-shadow: 0 2px 16px rgba(34, 34, 59, 0.09);
  margin-bottom: 1rem;
}

.project__modal-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: #22223b;
  margin-bottom: 0.2rem;
  text-align: center;
}

.project__modal-desc {
  font-size: 1.1rem;
  color: #4a4e69;
  margin-bottom: 0.7rem;
  text-align: center;
}

.project__modal-links {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
  justify-content: center;
}

.project__modal-links a {
  color: var(--first-color);
  font-weight: 600;
  font-size: 1.1rem;
  text-decoration: underline;
  transition: color 0.2s;
}

.project__modal-links a:hover,
.project__modal-links a:focus {
  color: #22223b;
}

/*===== WORK SECTION =====*/
.work__container {
  row-gap: 2rem;
}

.work__img {
  box-shadow: 0px 4px 25px rgba(14, 36, 49, 0.15);
  border-radius: 0.5rem;
  overflow: hidden;
}

.work__img img {
  transition: 1s;
}

.work__img img:hover {
  transform: scale(1.1);
}

/*===== TIMELINE/EXPERIENCE SECTION =====*/
.timeline__container {
  position: relative;
  margin: 2.5rem auto;
  max-width: 700px;
  padding-left: 2.5rem;
  border-left: 3px solid transparent;
  background: none;
}

.timeline__container::after {
  content: "";
  display: table;
  clear: both;
}

.timeline__container::before {
  content: '';
  position: absolute;
  left: 1.1rem;
  top: 0;
  width: 6px;
  height: 100%;
  background: linear-gradient(180deg, var(--first-color) 0%, #e0e7ff 100%);
  border-radius: 3px;
  opacity: 0.18;
  z-index: 0;
}

.timeline__item {
  position: relative;
  display: flex;
  flex-direction: column;
  margin-bottom: 3.2rem;
  padding: 1.2rem 1rem;
  background: none;
  transition: box-shadow 0.2s, background 0.2s, opacity 0.7s, transform 0.7s;
  z-index: 1;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.timeline__item:last-child {
  margin-bottom: 0;
}

.timeline__item:focus-within,
.timeline__item:hover {
  background: #f0f4ff;
  box-shadow: 0 2px 16px rgba(34, 34, 59, 0.07);
  border-radius: 1rem;
}

.timeline__header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
}

.timeline__icon {
  width: 2.3rem;
  height: 2.3rem;
  min-width: 2.3rem;
  min-height: 2.3rem;
  background: #fff;
  border: 3px solid var(--first-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--first-color);
  box-shadow: 0 2px 8px rgba(34, 34, 59, 0.08);
  z-index: 2;
  transition: box-shadow 0.2s, border-color 0.2s, color 0.2s, background 0.2s;
  outline: none;
  position: relative;
}

.timeline__icon:focus,
.timeline__icon:hover {
  box-shadow: 0 0 0 6px #e0e7ff, 0 2px 8px rgba(34, 34, 59, 0.13);
  border-color: #6366f1;
  color: #6366f1;
}

.timeline__icon.pulse {
  animation: timelinePulse 1.2s infinite;
}

.timeline__icon[tabindex="0"]:after {
  content: attr(title);
  position: absolute;
  left: 110%;
  top: 50%;
  transform: translateY(-50%);
  background: #22223b;
  color: #fff;
  font-size: 0.85rem;
  padding: 0.2rem 0.7rem;
  border-radius: 0.4rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.timeline__icon[tabindex="0"]:focus:after,
.timeline__icon[tabindex="0"]:hover:after {
  opacity: 1;
}

.timeline__date {
  display: inline-block;
  font-size: 0.98rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(90deg, var(--first-color) 60%, #6366f1 100%);
  border-radius: 1.2rem;
  padding: 0.18rem 1.1rem 0.18rem 1.1rem;
  margin-bottom: 0.3rem;
  letter-spacing: 0.5px;
  box-shadow: 0 1px 4px rgba(34, 34, 59, 0.07);
  align-self: flex-start;
}

.timeline__content {
  flex: 1;
}

.timeline__role {
  font-size: 1.18rem;
  font-weight: 700;
  color: #22223b;
  margin-bottom: 0.18rem;
  letter-spacing: 0.2px;
}

.timeline__desc {
  font-size: 1.01rem;
  color: #4a4e69;
  line-height: 1.6;
  font-weight: 400;
  margin-top: 0.1rem;
}

.timeline__item[data-type="education"] .timeline__icon {
  color: #3b82f6;
  border-color: #3b82f6;
}

.timeline__item[data-type="internship"] .timeline__icon {
  color: #f59e42;
  border-color: #f59e42;
}

.timeline__item[data-type="project"] .timeline__icon {
  color: #7c3aed;
  border-color: #7c3aed;
}

/*===== ACHIEVEMENTS SECTION =====*/
.achievements__container {
  row-gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.achievement__icon {
  font-size: 2rem;
  color: #f59e0b;
  background: rgba(245, 158, 11, 0.1);
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.achievement__icon-link {
  font-size: 2rem;
  color: #f59e0b;
  background: rgba(245, 158, 11, 0.1);
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  text-decoration: none;
}

.achievement__icon-link:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.achievement__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.achievement__fallback-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.achievement__content {
  flex: 1;
}

.achievement__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--second-color);
  margin-bottom: 0.25rem;
}

.achievement__issuer {
  font-size: 0.9rem;
  color: #6b7280;
  margin-bottom: 0.75rem;
  font-weight: 500;
}

.achievement__desc {
  font-size: 0.95rem;
  color: #4b5563;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.achievement__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--first-color);
  font-weight: 600;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.achievement__link:hover {
  color: var(--second-color);
}

/*===== CONTACT SECTION =====*/
.contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-top: 2rem;
}

.contact__icon {
  font-size: 2rem;
  color: #22223b;
  margin-left: 0.5rem;
  transition: color 0.2s;
}

.contact__icon:hover,
.contact__icon:focus {
  color: var(--first-color);
}

/*===== SECTION BACKGROUNDS =====*/
.about.section {
  background: linear-gradient(120deg, #f7f7fa 0%, #a3bffa 100%);
}

.skills.section {
  background: linear-gradient(120deg, #fff6e9 0%, #ffb6b9 100%);
}

.projects.section {
  background: linear-gradient(120deg, #e0f7fa 0%, #6366f1 100%);
}

.timeline.section {
  background: linear-gradient(120deg, #f7f7fa 0%, #ff6b6b 100%);
}

.contact.section {
  background: linear-gradient(120deg, #fff6e9 0%, #6366f1 100%);
}