/* ==============================
   Root Variables (Light Mode Only)
   ============================== */
:root {
  --bg-color: #ffffff;
  --text-color: #333333;
  --secondary-text-color: #555555;
  --accent-color: #007bff;
  --highlight-red: #cc0000;
  --highlight-green: #2a7f62;
  --highlight-blue: #0056b3;
  --card-bg: #f9f9f9;
  --border-color: #ccc;
  --shadow-color: rgba(0,0,0,0.1);
  --accent-color-hover: #0062cc; /* darker shade for hover */
}

/* ==============================
   Shared Styles
   ============================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
#about, #updates, #research, #academics, #projects, #certifications, #extracurricular, #contact {
  scroll-margin-top: 80px;
}



body {
  font-family: 'Roboto', sans-serif;
  line-height: 1.6;
  text-align: justify;
  background-color: var(--bg-color);
  color: var(--text-color);
}

a {
  color: var(--accent-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ==============================
   Header & Navigation
   ============================== */
header {
  background: var(--bg-color);
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--text-color);
}

nav {
  display: flex;
  gap: 1rem;
}

nav a {
  font-weight: bold;
  padding: 0.5rem;
  color: var(--text-color);
}

nav a:hover {
  color: var(--accent-color);
}

/* ==============================
   Wrapper & Main Content
   ============================== */
.wrapper {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem;
}

main {
  margin-top: 2rem;
}

/* ==============================
   About Section
   ============================== */
.about-container {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.about-container .left-column {
  flex: 0 0 250px;
  text-align: center;
}

.about-container .left-column img.profile-img {
  width: 100%;
  max-width: 250px;
  border-radius: 10%;
  box-shadow: 0 4px 10px var(--shadow-color);
  object-fit: cover;
}

.about-container .right-column {
  flex: 1;
}

.download-btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 10px 20px;
  background-color: var(--accent-color);
  color: #fff;
  font-weight: bold;
  font-size: 16px;
  border-radius: 5px;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.download-btn:hover {
  background-color: var(--accent-color-hover);
  transform: scale(1.05);
}

.left-column p i {
  color: var(--accent-color);
  margin-right: 8px;
}

/* ==============================
   Skills & Research / Education Side-by-Side
   ============================== */
.skills-research-section {
  margin-top: 2rem;
}

.skills-research-container {
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  flex-wrap: wrap;
}

.skills-research-container .left-column-skills,
.skills-research-container .right-column-skills {
  flex: 1 1 45%;
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.skills-research-container h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  border-bottom: 2px solid var(--accent-color);
  padding-bottom: 5px;
  color: var(--text-color);
}

.skills-research-container ul li {
  font-size: 1rem;
  color: var(--secondary-text-color);
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

/* Education Icons & University Name */
.right-column-skills ul li i {
  color: var(--accent-color);
  font-size: 1.2rem;
  margin-right: 8px;
}

.university-name {
  font-size: 0.85rem;
  color: var(--secondary-text-color);
  font-style: italic;
}
/* ==============================
   Education & Research Interests
   ============================== */
.edu-research-container {
  display: flex;
  flex-wrap: wrap;       /* stack on smaller screens */
  gap: 2rem;
  margin-top: 1.5rem;
}
.edu-column ul li i {
  color: var(--accent-color);
  margin-right: 8px;
  font-size: 1.1rem;
}

.edu-column,
.research-column {
  flex: 1;
  min-width: 250px;
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 6px var(--shadow-color);
}

.edu-column h3,
.research-column h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  border-bottom: 2px solid var(--accent-color);
  padding-bottom: 5px;
  color: var(--text-color);
}

.edu-column ul li,
.research-column ul li {
  margin-bottom: 0.5rem;
  line-height: 1.5;
  color: var(--secondary-text-color);
}
/* ==============================
   Updates Section
   ============================== */
#updates {
  margin-top: 2rem;
}

.update-entry {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: 0 2px 6px var(--shadow-color);
}

.update-entry h3 {
  margin-bottom: 1rem;
  color: var(--text-color);
}

.update-entry p {
  margin-bottom: 1rem;
  line-height: 1.6;
  color: var(--secondary-text-color);
}


/* ==============================
   Project / Research Section
   ============================== */
.section-item,
.research-container,
.certification-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 2rem;
  margin-bottom: 2rem;
}

.text-content {
  flex: 1;
}

.image-content {
  flex: 0 0 300px;
  text-align: center;
}

.image-content img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 10px var(--shadow-color);
  transition: transform 0.3s ease;
}

.image-content img:hover {
  transform: scale(1.02);
}

.research-img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 10px var(--shadow-color);
}

/* ==============================
   Misc Styling
   ============================== */
p {
  line-height: 1.6;
}

ul {
  list-style-type: none;
  padding: 0;
}

.highlight-red { color: var(--highlight-red); font-weight: bold; }
.highlight-green { color: var(--highlight-green); font-weight: bold; }
.highlight-blue { color: var(--highlight-blue); font-weight: bold; }


.contact-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.contact-section li {
  display: flex;              /* make icon + text align horizontally */
  align-items: center;        /* vertically center them */
  margin-bottom: 0.75rem;
  font-size: 1rem;
  color: var(--secondary-text-color);
}

.contact-section li i {
  color: var(--accent-color);
  margin-right: 10px;
  font-size: 1.2rem;
  flex-shrink: 0;             /* prevent icon from shrinking */
}

.section-item.full-width {
  flex-direction: column;   /* stack text and image vertically */
  align-items: flex-start;  /* align text to the left */
}


/* ==============================
   Footer
   ============================== */
footer {
  border-top: 1px solid var(--border-color);
  color: var(--secondary-text-color);
  font-size: 14px;
  padding: 1rem;
  text-align: center;
}

/* ==============================
   Responsive Design
   ============================== */
@media (max-width: 1024px) {
  .skills-research-container,
  .section-item,
  .research-container,
  .certification-item {
    flex-direction: column;
    text-align: center;
  }

  .image-content {
    margin-top: 1rem;
    flex: 1 1 100%;
  }
}