/* Clean, readable typography and centering */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Georgia, serif;
  max-width: 650px;
  margin: 50px auto;
  padding: 0 20px;
  line-height: 1.6;
  color: #222;
  background-color: #fcfcfc;
}

/* Header & Navigation */
header {
  margin-bottom: 2rem;
  border-bottom: 1px solid #eee;
  padding-bottom: 1rem;
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

nav a {
  color: #555;
  text-decoration: none;
  margin: 0 4px;
}

nav a:hover {
  text-decoration: underline;
  color: #000;
}

nav a.active {
  font-weight: bold;
  color: #000;          /* Ensures active link stands out cleanly */
  text-decoration: none; /* Optional: removes underline from active page */
}


.email-hint {
  display: inline;
}

.email-hint .hint-label {
  cursor: pointer;
  color: #666;
  text-decoration: underline;
  margin-right: 0; /* Ensures no artificial CSS gaps are added */
}

.email-hint .hint-label:hover {
  color: #000;
}

.email-hint .hint-text {
  display: none;
  color: #333;
  padding-left: 0px; /* Crisp, controlled 0px gap when revealed */
}

.email-hint.open .hint-text {
  display: inline;
}

/* Links & Headings */
a {
  color: #0066cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h2 {
  font-size: 1.3rem;
  margin-top: 2rem;
  border-bottom: 1px solid #ddd;
  padding-bottom: 0.3rem;
}

h3 {
  font-size: 1.05rem;
  margin-top: 1.2rem;
}

/* 1. Target ONLY your thesis list */
ul.thesis-list {
  display: block !important;
  list-style-type: disc !important;   /* Force solid bullet dots */
  list-style-position: outside !important; /* Keep text block aligned past the dot */
  padding-left: 2.5rem !important;    /* Shift both dots and text 2.5rem to the right */
  margin-left: 1rem !important;       /* Extra push from the left margin */
  margin-top: 0.8rem;
  margin-bottom: 0.8rem;
}

ul.thesis-list li {
  display: list-item !important;      /* Restore standard li behavior if overridden */
  margin-bottom: 0.6rem;              /* Clean paragraph spacing between items */
  line-height: 1.5;
}

/* 2. Standard rule for Talks and all other general lists */
ul {
  padding-left: 1.5rem;               /* Standard list indentation */
  margin-top: 0.8rem;
  margin-bottom: 0.8rem;
}

li {
  margin-bottom: 0.8rem;
  line-height: 1.5;
}

h3.run-in {
  display: inline;
  font-size: 1.1rem;
  font-weight: bold;
  margin-right: 6px;
}

h3.run-in + p {
  display: inline;
}

/* --- Talks & Travel Styling --- */

.talks-list {
  padding-left: 0;
  list-style: none;
}

.talks-list li {
  margin-bottom: 1rem;
  line-height: 1.5;
  transition: opacity 0.3s ease;
}

/* Upcoming talks: Bold & crisp */
.talks-list li.upcoming {
  font-weight: 600;
  color: #000;
}

/* Past talks: Normal weight & faded */
.talks-list li.past {
  font-weight: 400;
  color: #777;
  opacity: 0.75;
}

/* Fades only the word "Past" in headings */
.faded-title {
  color: #888;
  font-weight: normal;
  opacity: 0.7;
}

.talk-date {
  font-family: monospace, monospace;
  font-size: 0.9em;
}


/* Classic, crisp, un-faded browser link blue */
.talk-slides a {
  color: #0000ee !important; /* Pure classic HTML browser blue */
  opacity: 1 !important;      /* Ensures no parent fading leaks into the link */
  text-decoration: underline;
  font-weight: bold;
}

/* Optional standard visited state if desired */
.talk-slides a:visited {
  color: #551a8b !important; /* Standard browser visited purple */
}
/* --- Travel Photo Gallery --- */

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 15px;
  margin-top: 1.5rem;
}

.photo-grid figure {
  margin: 0;
  text-align: center;
}

.photo-grid img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.photo-grid img:hover {
  transform: scale(1.03);
}

.photo-grid figcaption {
  font-size: 0.8rem;
  color: #666;
  margin-top: 6px;
}


/* Ensure the parent main container is relatively positioned */
main {
  position: relative;
  max-width: 650px;
  margin: 50px auto;
  padding: 0 20px;
}

/* Base Photo Sidebar Styles */
.left-margin-photos figure {
  margin: 0 0 15px 0;
  text-align: center;
}

.left-margin-photos img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 0;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

.left-margin-photos figcaption {
  font-size: 0.75rem;
  color: #666;
  margin-top: 4px;
}

/* --- WIDE DESKTOP SCREENS ONLY (Width > 1400px) --- */
@media (min-width: 1400px) {
  .left-margin-photos {
    position: absolute;
    left: -370px;     /* Push photos out into the left blank margin */
    top: 0;
    width: 330px;     /* Fixed width for margin photos */
  }
}

/* --- SMALLER SCREENS / MOBILE (Width < 1400px) --- */
@media (max-width: 1399px) {
  .left-margin-photos {
    display: flex;    /* Display photos horizontally above/below content */
    gap: 15px;
    margin-bottom: 25px;
  }
  
  .left-margin-photos figure {
    flex: 1;
  }
}




/* 1. Main container defines the exact left alignment edge */
main, header {
  max-width: 650px;
  margin: 0 auto;        /* Center the container on screen */
  padding: 0 20px;       /* Consistent side padding */
  box-sizing: border-box;
}

/* 2. Reset name heading margins to align precisely with text below */
h1 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-top: 50px;      /* Top spacing for the page */
  margin-bottom: 0.5rem; /* Small gap before navigation/subtitle */
  margin-left: 0;        /* Force hard left edge */
  padding: 0;
}

/* 3. Ensure navigation aligns to the exact same left pixel */
nav {
  margin: 0 0 2rem 0;    /* Gap below navigation */
  padding: 0;            /* Remove any default list padding */
}

/* 4. Ensure the first nav link starts with zero indentation */
nav a:first-child {
  margin-left: 0;
  padding-left: 0;
}

/* 5. Match body text margins */
p, section, ul {
  margin-left: 0;
  padding-left: 0;
}

/* Lists require explicit zeroing of default browser padding */
ul {
  list-style-position: inside; /* Keeps bullet points aligned to the left edge */
}



/* --- Click-Toggle Photo Specifics --- */

/* Hide the checkbox */
.left-margin-photos .photo-checkbox {
  display: none;
}

/* Make the label the relative container for stacking */
.left-margin-photos .photo-toggle-label {
  display: block;
  position: relative;
  cursor: pointer;
}

/* Primary photo sets the container height naturally */
.left-margin-photos .photo-primary {
  transition: opacity 0.3s ease-in-out;
}

/* Secondary photo sits directly on top */
.left-margin-photos .photo-secondary {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
}

/* Swap opacity when checked */
.left-margin-photos .photo-checkbox:checked + .photo-toggle-label .photo-secondary {
  opacity: 1;
}

.left-margin-photos .photo-checkbox:checked + .photo-toggle-label .photo-primary {
  opacity: 0;
}