/* Global Styles */


@font-face {
  font-family: 'FontAwesome';
  src: url("../fonts/fontawesome-webfont.eot");
  src: url("../fonts/fontawesome-webfont.eot#iefix") format("embedded-opentype"), 
       url("../fonts/fontawesome-webfont.woff2") format("woff2"), 
       url("../fonts/fontawesome-webfont.woff") format("woff"), 
       url("../fonts/fontawesome-webfont.ttf") format("truetype"), 
       url("../fonts/fontawesome-webfont.svg#fontawesomeregular") format("svg");
  font-weight: normal;
  font-style: normal;
}



*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
    --primary-color: #1A5276;
    --text-color: #2c3e50;
    --bg-color: #ffffff;
    --hover-bg: #f8f9fa;
    --border-radius: 8px;
    --transition-speed: 0.3s;
}

html {
  background: #fff;
  font-size: 18px;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (min-width: 48em) {
  html {
    font-size: 18px;
  }
}

body {
  margin: 2em auto;
  padding: 0 1em;
  color: var(--text-color);
  background-color: var(--bg-color);
  line-height: 1.6;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  max-width: 925px;
  display: flex;
  min-height: 100vh;
}

/* Base layout */
.container {
    margin-left: 300px;
    padding: 2em 3em;
    max-width: calc(100% - 300px);
}

.page {
    margin: 0;
    padding: 0;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 300px;
    height: 100vh;
    padding: 2em;
    background-color: #fff;
    overflow-y: auto;
    z-index: 1001;
}

.sidebar > .fade {
  opacity: 0.75;
  transition: opacity 0.2s ease-in-out;
}

.sidebar:hover > .fade {
  opacity: 1;
}

.sidebar p,
.sidebar li {
  font-family: "Roboto", "Helvetica Neue", Arial, sans-serif;
  font-size: 1em;
  line-height: 1.4;
}

/* Content */
.content {
  flex: 1;
}

/* Links */
a {
  color: var(--primary-color);
  transition: color var(--transition-speed) ease;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

a:hover {
  color: #2980b9;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

/* Headings */
h1,
h2 {
  color: var(--primary-color);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 1.5em 0 0.8em;
  font-family: "Roboto", "Helvetica Neue", Arial, sans-serif;
}

h1 {
  font-weight: normal;
  margin-top: 0;
  font-size: 2.2em;
}

h2 {
  font-weight: normal;
  font-size: 1.8em;
}

/* Paragraphs */
p {
  font-size: 1.1em;
  margin-bottom: 1.3em;
  line-height: 1.6;
}

/* Lists */
ul > li {
  font-size: 1.1em;
  margin-bottom: 0.8em;
  line-height: 1.6;
}

li > ul {
  margin-top: 0.5em;
}

/* Logo */
.ut-logo {
  font-size: 70%;
  float: right;
  margin: 0.2em -0.2em 0.7em 2.8em;
  border: 0.2em solid white;
  border-radius: 0.4em;
}

.ut-logo > img {
  width: 10em;
  height: 2.573em;
  display: block;
}

@media (min-width: 58em) {
  .ut-logo {
    font-size: 100%;
  }
}

/* Author Section */
.author_avatar {
    margin: 0 auto 8px auto;
    width: 250px;
    height: 250px;
    overflow: hidden;
    border-radius: 50%;
}

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

.author_content {
  padding: 10px 20px;
  text-align: left;
  font-size: 0.9em;
}

.author_name {
  font-weight: bold;
  font-size: 1.2em;
  margin-bottom: 8px;
  text-align: center;
}

.author_bio {
  margin: 0;
  font-size: 0.95em;
  line-height: 1.3;
  text-align: left;
  margin-bottom: 8px;
}

.author_location {
  margin: 0;
  font-size: 0.95em;
  line-height: 1.3;
  text-align: left;
  color: #666;
}

.social-links-container {
  padding: 4px 20px;
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
  margin: 4px 0;
  background-color: #f8f9fa;
}

.social-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.social-links a {
  color: #2077b2;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease;
  line-height: 1;
  padding: 1px 0;
}

.social-links li {
  margin: 0;
  padding: 0;
}

.social-links i {
  font-size: 1em;
  width: 16px;
  text-align: center;
}

.twitter-feed {
  margin-top: 8px;
}

/* Twitter Widget Styles */
.twitter-timeline-wrapper {
    display: none; /* Hidden by default on mobile */
    margin: 2em 0;
    width: 100%;
}

iframe.twitter-timeline {
    width: 100% !important;
    min-width: 100% !important;
    height: 100% !important;
    min-height: 800px !important;
}

/* Show Twitter timeline on larger screens */
@media (min-width: 768px) {
    .twitter-timeline-wrapper {
        display: block;
    }
}

/* Responsive adjustments for smaller screens */
@media (max-width: 767px) {
    iframe.twitter-timeline {
        min-height: 600px !important; /* Shorter on mobile */
    }
}

/* Responsive Styles */
@media (min-width: 48em) {
  .sidebar {
    width: 22%;
    float: left;
    margin-right: 2.5%;
    padding-right: 0;
  }

  .sidebar > .fade {
    opacity: 0.75;
  }
}

@media (min-width: 58em) {
  body {
    display: table;
  }
}

@media (min-width: 80em) {
  body {
    max-width: 1280px;
  }
}

@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    float: none;
    margin: 0 0 2em 0;
    padding: 0;
  }
  
  body {
    flex-direction: column;
    padding: 1rem;
  }
  
  .social-links {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }
  
  html {
    font-size: 16px;
  }
}

/* Enhanced social links */
.social-links {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    padding: 0;
    list-style: none;
}

.social-links a {
    display: inline-block;
    padding: 0.5rem 0;
    transition: transform var(--transition-speed) ease;
}

.social-links a:hover {
    transform: translateX(5px);
}

/* Improved content sections */
.page {
    padding: 0;
    margin: 0;
    width: 100%;
}

.page p {
    line-height: 1.8;
    margin-bottom: 1.5em;
}

/* Card-like sections */
.recent-tweets, .news-section {
    background: var(--bg-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin: 1.5rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: transform var(--transition-speed) ease;
}

.recent-tweets:hover, .news-section:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Modern Navigation Bar Styles */
.nav-container {
    width: 100%;
    background-color: #ffffff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    margin-bottom: 1.5em;
}

.nav-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.2em;
    padding: 0.8em 0;
}

.nav-link {
    color: #444;
    text-decoration: none;
    font-size: 1em;
    padding: 0.3em 0.6em;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: #007bff;
    background-color: #f8f9fa;
}

.nav-link.active {
    color: #007bff;
    font-weight: 500;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .sidebar {
        width: 250px;
    }
    .container {
        margin-left: 250px;
        max-width: calc(100% - 250px);
        padding: 2em;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        padding: 1em;
    }
    .container {
        margin-left: 0;
        max-width: 100%;
        padding: 1.5em;
    }
    .nav-bar {
        padding: 0.6em;
        gap: 0.8em;
    }
    .nav-link {
        font-size: 0.9em;
    }
}

/* Publication styles */
.pdf-link {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.pdf-icon {
    width: 20px;
    height: 20px;
    vertical-align: middle;
    margin-left: 4px;
}

@media (max-width: 768px) {
    .pdf-icon {
        width: 18px;
        height: 18px;
        margin-left: 3px;
    }
}