/* GENERAL */
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap");

*{
    margin: 0;
    padding: 0;
}
* {
  /* outline: solid  1px red; Temporary for debugging */
}

html {
  scroll-padding-top:  70px;
}

body {
    font-family: "Poppins", sans-serif;
    background-color: #ffffff;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
  }
  html {
    scroll-behavior: smooth;
  }
  p {
    color: rgb(85, 85, 85);
    font-weight: 400;
  }
  
  h1, h2, h3, h4, h5, h6 {
    font-family: "Poppins", sans-serif;
    font-weight: 600;
  }
  
  a,
.btn {
  transition: all 300ms ease;
}
nav,
.nav-links {
  display: flex;
}
nav {
  justify-content: space-around;
  align-items: center;
  height: 17vh;
}
.nav-links {
  gap: 2rem;
  list-style: none;
  font-size: 1rem;
  font-weight: 500;
}
a {
  color: black;
  text-decoration: none;
  text-decoration-color: white;
  font-weight: 500;
}
a:hover {
  color: #0066cc;
  text-decoration: underline;
  text-underline-offset: 1rem;
  text-decoration-color: rgb(181, 181, 181);
}
.logo {
  font-size: 1.5rem;
  font-weight: 700;
}
.logo:hover {
  cursor: default;
}

/* HAMBURGER MENU */

#hamburger-nav {
  display: none;
}
.hamburger-menu {
  position: relative;
  display: inline-block;
}

.hamburger-icon {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 24px;
  width: 30px;
  cursor: pointer;
}
.hamburger-icon span {
  width: 100%;
  height: 2px;
  background-color: black;
  transition: all 0.3 ease-in-out;
}
.menu-links {
  position: absolute;
  top: 100%;
  right: 0;
  background-color: white;
  width: fit-content;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3 ease-in-out;
  border: 1px solid rgb(163, 163, 163);
  border-radius: 0.5rem;
}
.menu-links a {
  display: block;
  padding: 10px;
  text-align: center;
  font-size: 1rem;
  color: black;
  text-decoration: none;
  transition: all 0.3 ease-in-out;
}
.menu-links li {
  list-style: none;
}

.menu-links.open {
  max-height: 500px;
}

.hamburger-icon.open span:first-child {
  transform: rotate(45deg) translate(10px, 5px);
}
.hamburger-icon.open span:nth-child(2) {
  opacity: 0;
}

.hamburger-icon.open span:last-child {
  transform: rotate(-45deg) translate(10px, -5px);
}

.hamburger-icon span:first-child {
  transform: none;
}

.hamburger-icon span:first-child {
  opacity: 1;
}

.hamburger-icon span:first-child {
  transform: none;
}

section {
  padding-top: 4vh;
  margin: 0 10rem;
  box-sizing: border-box;
  min-height: fit-content;
  padding-bottom: 4vh;
}

.section-container {
  display: flex;
}

/* PROFILE SECTION */

#profile {
  display: flex;
  justify-content: center;
  gap: 5rem;
  height: fit-content;
  min-height: 500px;
  padding-top: 8vh;
  padding-bottom: 4vh;
}

.section__pic-container {
  display: flex;
  height: 400px;
  width: 400px;
  margin: auto 0;
  border-radius: 2rem;
  overflow: hidden;
}

.section__pic-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section__text {
  align-self: center;
  text-align: center;
  flex: 1;
}

.section__text p {
  font-weight: 500;
}

.section__text__p1 {
  text-align: center;
  font-size: 0.95rem;
  color: #0066cc;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.section__text__p2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.hero-intro {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 400;
}

.title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 2rem;
  font-weight: 700;
}

#socials-container {
  display: flex;
  justify-content: center;
  margin-top: 1rem;
  gap: 1rem;
}

#socials-container a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: #f0f0f0;
  border-radius: 50%;
  width: 2.5rem;
  height: 2.5rem;
  font-weight: 700;
  color: #0066cc;
  transition: all 300ms ease;
}

#socials-container a:hover {
  background-color: #0066cc;
  color: white;
  text-decoration: none;
}

/* ICONS */

.icon {
  cursor: pointer;
  height: 2rem;
}

/* BUTTONS */

.btn-container {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  font-weight: 600;
  transition: all 300ms ease;
  padding: 1rem 1.5rem;
  border-radius: 2rem;
  border: 2px solid rgb(53, 53, 53);
  cursor: pointer;
  font-size: 0.95rem;
  font-family: "Poppins", sans-serif;
}

.btn-color-1 {
  background: rgb(53, 53, 53);
  color: white;
}

.btn-color-1:hover {
  background: rgb(0, 0, 0);
  border-color: rgb(0, 0, 0);
}

.btn-color-2 {
  background: none;
  color: black;
}

.btn-color-2:hover {
  background: rgb(53, 53, 53);
  color: white;
  border-color: rgb(53, 53, 53);
}

/* about section */

#about {
    position: relative;
    padding-top: 6vh;
}

.about-containers {
  gap: 2rem;
  margin-bottom: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.about-details-container {
  justify-content: center;
  flex-direction: column;
}

.about-containers,
.about-details-container {
  display: flex;
}

.about-pic {
  border-radius: 2rem;
}

.arrow {
  display: none;
}

.details-container {
  padding: 2rem;
  flex: 1;
  background: white;
  border-radius: 1.5rem;
  border: 1px solid rgb(163, 163, 163);
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all 300ms ease;
}

.details-container:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.details-container h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.details-container p {
  font-size: 0.9rem;
  font-weight: 400;
}

.section-container {
  gap: 4rem;
}

.text-container {
  margin-top: 2rem;
  line-height: 1.8;
  text-align: left;
}

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

/* EDUCATION SECTION */

#education {
    position: relative;
    padding-top: 6vh;
}

.education-container {
  display: flex;
  justify-content: center;
  width: 100%;
}

#education,
.history-tl-container {
  position: relative;
}

.history-tl-container {
  width: 100%;
  align-items: center;
  display: block;
  margin-top: 2rem;
}

.history-tl-container ul.timeline-ul {
  margin: 20px auto;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  list-style: none;
}

.history-tl-container ul.timeline-ul li {
  list-style: none;
  width: 90%;
  max-width: 600px;
  min-height: 80px;
  border-left: 2px solid #0066cc;
  padding: 0 0 40px 40px;
  position: relative;
  margin-bottom: 30px;
}

.history-tl-container ul.timeline-ul li:last-child {
  border-left: 2px solid #0066cc;
}

.history-tl-container ul.timeline-ul li::before {
  position: absolute;
  left: -12px;
  top: 0;
  content: " ";
  border: 3px solid white;
  border-radius: 50%;
  background: #0066cc;
  height: 20px;
  width: 20px;
  transition: all 300ms ease;
}

.history-tl-container ul.timeline-ul li:hover::before {
  transform: scale(1.3);
  transition: all 300ms ease;
}

.timestamp {
  text-align: left;
}

.timestamp h3 {
  font-size: 1.15rem;
  color: black;
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.timestamp h4 {
  font-size: 0.95rem;
  color: #0066cc;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.education-label {
  font-size: 0.9rem;
  color: #0066cc;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.time {
  background: #0066cc;
  display: inline-block;
  color: white;
  font-size: 0.8rem;
  padding: 0.3rem 0.8rem;
  border-radius: 1rem;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.education-detail {
  font-size: 0.85rem;
  color: rgb(85, 85, 85);
  margin-top: 0.5rem;
  font-weight: 400;
}

/* SKILLS SECTION */

#skills {
  position: relative;
  padding-top: 6vh;
}

.skills-container {
  display: flex;
  justify-content: center;
  width: 100%;
}

.skill-card {
  flex: 1;
  min-width: 280px;
}

.skill-category-title {
  color: #0066cc;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  text-align: left;
}

.skill-items {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: left;
}

.skill-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.skill-item .icon {
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.skill-item h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: black;
  margin-bottom: 0.25rem;
}

.skill-item p {
  font-size: 0.8rem;
  color: rgb(120, 120, 120);
  font-weight: 400;
}

/* PROJECTS SECTION */

#projects {
    position: relative;
    padding-top: 6vh;
}

.projects-container {
  display: flex;
  justify-content: center;
  width: 100%;
}

.about-containers.projects-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  width: 100%;
}

.project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-image-container {
  width: 100%;
  height: 200px;
  border-radius: 1rem 1rem 0 0;
  overflow: hidden;
  margin-bottom: 1rem;
}

.project-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.project-image:hover {
  transform: scale(1.05);
}

.color-container {
  border-color: rgb(163, 163, 163);
  background: rgb(250, 250, 250);
}

.project-img {
  border-radius: 2rem;
  width: 90%;
  height: 200px;
  object-fit: cover;
}

.project-title {
  margin: 1.5rem 0 0.5rem 0;
  color: black;
  font-size: 1.1rem;
  font-weight: 700;
}

.project-description {
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgb(85, 85, 85);
  margin-bottom: 1rem;
  flex-grow: 1;
  font-weight: 400;
}

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

.tech-badge {
  background: #e8f0ff;
  color: #0066cc;
  padding: 0.35rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.project-btn {
  color: black;
  border-color: rgb(163, 163, 163);
}

.project-card .btn-container {
  margin-top: auto;
}

/* RESEARCH SECTION */

#research {
  position: relative;
  padding-top: 6vh;
}

.research-container {
  display: flex;
  justify-content: center;
  width: 100%;
}

.research-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  width: 100%;
}

.research-card {
  padding: 2rem;
  background: linear-gradient(135deg, #f5f7ff 0%, #f0f4ff 100%);
  border: 2px solid #e0e8ff;
  border-radius: 1.5rem;
  transition: all 300ms ease;
}

.research-card:hover {
  border-color: #0066cc;
  box-shadow: 0 4px 16px rgba(0, 102, 204, 0.15);
  transform: translateY(-4px);
}

.research-title {
  color: #0066cc;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.research-card p {
  line-height: 1.7;
  font-size: 0.9rem;
  color: rgb(85, 85, 85);
  font-weight: 400;
}

/* ACHIEVEMENTS SECTION */

#achievements {
  position: relative;
  padding-top: 6vh;
}

.achievements-container {
  display: flex;
  justify-content: center;
  width: 100%;
}

.achievements-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  width: 100%;
}

.achievement-item {
  padding: 2rem;
  background: white;
  border: 2px solid rgb(163, 163, 163);
  border-radius: 1.5rem;
  text-align: center;
  transition: all 300ms ease;
}

.achievement-item:hover {
  border-color: #0066cc;
  box-shadow: 0 4px 16px rgba(0, 102, 204, 0.1);
  transform: translateY(-4px);
}

.achievement-number {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.achievement-item h3 {
  color: black;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.achievement-item p {
  line-height: 1.6;
  font-size: 0.9rem;
  color: rgb(85, 85, 85);
  font-weight: 400;
}

/* LEADERSHIP SECTION */

#leadership {
  position: relative;
  padding-top: 6vh;
}

.leadership-container {
  display: flex;
  justify-content: center;
  width: 100%;
}

.leadership-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  width: 100%;
}

.leadership-item {
  padding: 2rem;
  background: white;
  border: 1px solid rgb(163, 163, 163);
  border-radius: 1.5rem;
  transition: all 300ms ease;
}

.leadership-item:hover {
  border-color: #0066cc;
  box-shadow: 0 4px 16px rgba(0, 102, 204, 0.1);
}

.leadership-item h3 {
  color: #0066cc;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.leadership-item p {
  line-height: 1.6;
  font-size: 0.9rem;
  color: rgb(85, 85, 85);
  margin-bottom: 0.5rem;
  font-weight: 400;
}

/* CONTACT */

#contact {
    display: flex;
    justify-content: center;
    flex-direction: column;
    min-height: fit-content;
    padding-top: 6vh;
    padding-bottom: 6vh;
}

.contact-info-upper-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
  margin: 2rem auto;
  width: 100%;
  max-width: 800px;
}

.contact-info-container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.75rem;
  padding: 2rem;
  background: white;
  border: 1px solid rgb(163, 163, 163);
  border-radius: 1.5rem;
  flex: 1;
  min-width: 200px;
  transition: all 300ms ease;
}

.contact-info-container:hover {
  border-color: #0066cc;
  box-shadow: 0 4px 16px rgba(0, 102, 204, 0.1);
}

.contact-info-container h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #0066cc;
  margin: 0;
}

.contact-info-container p {
  font-size: 0.95rem;
  margin: 0;
  font-weight: 500;
}

.contact-info-container p a {
  color: black;
  text-decoration: none;
  font-weight: 600;
}

.contact-info-container p a:hover {
  color: #0066cc;
  text-decoration: underline;
}

.contact-icon {
  cursor: default;
}

.email-icon {
  height: 2.5rem;
}

/* FOOTER SECTION */

footer {
  min-height: fit-content;
  margin: 0 10rem;
  padding: 3rem 0;
  border-top: 1px solid rgb(163, 163, 163);
}

footer nav {
  height: fit-content;
  margin-bottom: 2rem;
}

footer p {
  text-align: center;
  font-size: 0.9rem;
  color: rgb(85, 85, 85);
  font-weight: 400;
}