/* =======================================================
   UNIVERSAL ACADEMIC TEMPLATE STYLES
   Author: [Your Name]
   Year: 2025
   ======================================================= */

/* ====== VARIABLES ====== */
:root {
  --primary: #004080;
  --accent: #0078d7;
  --bg: #fafafa;
  --text: #222;
  --muted: #666;
  --max-width: 900px;
}

/* ====== RESET & BASE ====== */
* {
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

main {
  max-width: var(--max-width);
  margin: 2rem auto;
  padding: 0 1.5rem;
}

section {
  margin-bottom: 2rem;
}

h1, h2, h3 {
  color: var(--primary);
  margin-top: 2rem;
  margin-bottom: 0.8rem;
}

ul, ol {
  padding-left: 1.5rem;
}

ol li {
  margin-bottom: 0.8rem;
}

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

a:hover {
  text-decoration: underline;
}

/* Accessibility: visible focus outline */
a:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Subtle section dividers */
main section + section {
  border-top: 1px solid #ddd;
  padding-top: 1.5rem;
}

/* ====== HEADER ====== */
header {
  background: white;
  border-bottom: 3px solid var(--primary);
  padding: 1rem 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

header img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 0.5rem;
}

header h1 {
  margin: 0.2rem 0;
}

header p {
  color: var(--muted);
  margin: 0.2rem 0 0.8rem 0;
}

/* Keep name + dept text aligned left next to photo on larger screens */
@media (min-width: 700px) {
  header {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    text-align: left;
    gap: 1.5rem;
  }

  header img {
    margin-bottom: 0;
  }

  /* Wrap text and nav in a container beside the image */
  .header-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  nav {
    margin-top: 0.8rem;
  }
}

/* Responsive horizontal layout for wide screens */
@media (min-width: 700px) {
  header {
    flex-direction: row;
    justify-content: center;
    text-align: left;
    gap: 1.5rem;
  }

  header img {
    margin-bottom: 0;
  }
}

/* ====== NAVIGATION ====== */
nav {
  margin-top: 1rem;
}

nav a {
  margin: 0 0.5rem;
  color: var(--primary);
  font-weight: 500;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}

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

nav a.active {
  background: var(--primary);
  color: white;
}

/* ====== FOOTER ====== */
footer {
  background: #e9edf2; /* Slightly darker, academic-neutral gray-blue */
  color: #333;
  border-top: 3px solid var(--primary);
  font-size: 0.95em;
}

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

footer a:hover {
  text-decoration: underline;
}

.footer-container {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 1rem 1.5rem 1.2rem 1.5rem;
}

.footer-section {
  flex: 1 1 300px;
}

.footer-section p {
  margin: 0.3rem 0;
  color: #444; /* Slightly muted for better readability */
}

/* Subtle top accent line */
footer::before {
  content: "";
  display: block;
  height: 3px;
  width: 100%;
  background: var(--accent);
  margin-bottom: 1rem;
}

/* Responsive layout */
@media (max-width: 600px) {
  .footer-container {
    flex-direction: column;
    text-align: center;
  }

  footer::before {
    margin-bottom: 0.8rem;
  }
}


/* ====== SCROLL TO TOP BUTTON ====== */
#scrollTop {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: none;
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.6rem 0.8rem;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  transition: background 0.3s;
}

#scrollTop:hover {
  background: var(--primary);
}

.dark-mode #scrollTop {
  background: var(--accent);
  color: #fff;
}

/* ====== THEMES ====== */
.light-mode {
  --bg: #ffffff;
  --text: #000000;
}

.dark-mode {
  --bg: #1a1a1a;
  --text: #e0e0e0;
  --primary: #88b0ff;
  --accent: #5c8aff;
}

/* ====== BLOCKQUOTES ====== */
blockquote {
  border-left: 4px solid var(--accent);
  padding-left: 1rem;
  color: var(--muted);
  font-style: italic;
  margin: 1rem 0;
}