/* style.css */

/* ===== Colors ===== */
:root {
  /* UT Theme */
  --ut-orange: #BF5700;
  --ut-beige:  #F5F1E7;
  --ut-dark:   #333333;

  /* Nordic Theme */
  --nordic-blue:       #065171;  
  --nordic-blue-deep:  #577C8A;  
  --nordic-gray:       #D9E2E9;
  --nordic-charcoal:   #2C3E50;
  --nordic-accent:     #F5F1E7;

  /* Rhein Theme */
  --rhein-blue:    #013c57;  
  --rhein-amber:   #f79604; 
  --rhein-charcoal:#3A3A3A;
}

/* =================== HEADER =================== */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #2C3E50;
    height: 105px;                
    padding: 0 3rem;              
    box-sizing: border-box;
    position: fixed;              
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 6px #BF5700;
    backdrop-filter: blur(6px);
}



/* =================== LOGO =================== */
.logo-link {
    display: flex;
    align-items: center;
    gap: 0rem;                     /* spacing between SVG and text */
    text-decoration: none;
    line-height: 1;
    cursor: pointer;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.2rem;                     /* space between SVG and text */
    margin: 0;
    width: auto;
}


/* =================== SVG LOGO =================== */
/* SVG logo always visible */
.connection-web {
    width: 130px;
    height: auto;
    flex-shrink: 0;
    display: block;
    vector-effect: non-scaling-stroke;
    outline: none;
    box-shadow: none;

    /* initial state */
    transform: scale(1);
    opacity: 1;

    /* smooth transitions for both hover-in and hover-out */
    transition: transform 0.5s ease, opacity 0.5s ease;
}

/* Hover state */
.logo-bg:hover .connection-web {
    transform: scale(1.05);  /* slightly bigger */
    opacity: 1;               /* stays visible */
}


/* Lines */
.connection-web line {
    stroke-width: 2;                  /* thicker lines */
    stroke-dasharray: 100;
    stroke-dashoffset: 0;             /* fully visible initially */
    transition: stroke 0.5s ease, stroke-dashoffset 1.5s ease;
}

/* Nodes */
.connection-web circle {
    r: 3;                             /* bigger nodes */
    transition: transform 0.8s ease, fill 0.5s ease;
    transform: scale(1);
}

/* Initial colors */
.connection-web line.line1,
.connection-web line.line3,
.connection-web line.line5,
.connection-web line.line7,
.connection-web line.line9 { stroke: #04b4f4; } /* blue */
.connection-web line.line2,
.connection-web line.line4,
.connection-web line.line6,
.connection-web line.line8,
.connection-web line.line10 { stroke: #f79604; } /* orange */

.connection-web circle.node1,
.connection-web circle.node3,
.connection-web circle.node5 { fill: #f79604; } /* orange */
.connection-web circle.node2,
.connection-web circle.node4,
.connection-web circle.node6 { fill: #04b4f4; } /* blue */

/* Hover color swap & animate lines */
.logo-bg:hover .connection-web line.line1,
.logo-bg:hover .connection-web line.line3,
.logo-bg:hover .connection-web line.line5,
.logo-bg:hover .connection-web line.line7,
.logo-bg:hover .connection-web line.line9 {
    stroke: #F79604;
    stroke-dashoffset: -100;
}
.logo-bg:hover .connection-web line.line2,
.logo-bg:hover .connection-web line.line4,
.logo-bg:hover .connection-web line.line6,
.logo-bg:hover .connection-web line.line8,
.logo-bg:hover .connection-web line.line10 {
    stroke: #04b4f4;
    stroke-dashoffset: -100;
}

/* Hover nodes color change */
.logo-bg:hover .connection-web circle.node1,
.logo-bg:hover .connection-web circle.node3,
.logo-bg:hover .connection-web circle.node5 { fill: #04b4f4; }
.logo-bg:hover .connection-web circle.node2,
.logo-bg:hover .connection-web circle.node4,
.logo-bg:hover .connection-web circle.node6 { fill: #F79604; }

/* =================== LOGO TEXT =================== */
.logo-text {
    font-size: 2rem;                /* bigger text */
    font-weight: bold;
    color: white;
    line-height: 1;
    display: inline-block;
    transition: color 0.4s ease;
}

/* Hover text */
.logo-link:hover .logo-text {
    color: #F79604;
}

/* =================== NAVIGATION =================== */
#nav-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#nav-menu a {
    text-decoration: none;
    color: #ffffff;
    font-weight: 400;
    font-size: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background 0.3s ease;
}

#nav-menu a:hover {
    color: var(--ut-orange);
}

#nav-menu a.active {
  color: #ffffff;
  font-weight: 600;
  position: relative;
}

#nav-menu a.active::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--ut-orange);
}


/* =================== MOBILE NAVIGATION & HEADER =================== */
@media (max-width: 768px) {

  /* Header adjustments */
  header {
    flex-wrap: wrap;
    min-height: 60px;
    height: auto;
  }

  /* Logo scaling */
  .logo-text {
    font-size: 1.6rem;
  }
  .connection-web {
    width: 60px;
  }
}



/* ===== Mobile Menu ===== */
@media (max-width: 768px) {

  /* Show the toggle button */
  .menu-toggle {
    display: flex;                 /* visible */
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 22px;
    cursor: pointer;
  }

  .menu-toggle span {
    display: block;
    height: 3px;
    background-color: white;
    border-radius: 2px;
    width: 100%;
  }

  /* Hide the nav menu initially */
  #nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    background: #BF5700;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 999;
  }

  /* Show menu when active */
  #nav-menu.show {
    display: flex;
  }

  #nav-menu a {
    padding: 1rem;
    text-align: center;
    border-radius: 0;
  }
}


html, body {
  
    height: 100%;   
    margin: 0;      
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
}

body {
  margin: 0;
  padding-top: 120px;  /* same as header height */
  box-sizing: border-box;
  display: flex;          
  flex-direction: column; 
  min-height: 100vh;

  margin: 0;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background-color: #fffaf0;
  position: relative;
}



main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem; /* top/bottom and left/right spacing */
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    color: #333;
    line-height: 1.6;
}

/* Hero */
.hero {
  margin-top: -5rem; 
  text-align: center;
  padding: 2rem 1rem; 
}

.hero h1 {
  margin-bottom: 0.5rem; 
  font-size: 3rem;        
}

.hero h2 {
  margin-top: 0;          
  font-size: 1.5rem;      
  font-weight: 400;
  color: #333;            
}

.hero p {
    font-size: 1.2rem;
    color: #555;
}

@media (max-width: 480px) {
  /* Reset body spacing */
  body {
    margin: 0;
    padding-top: 40px;
  }

  /* Main container adjustments */
  main {
    margin-top: 0;
    padding-top: 0; 
  }


.abstract-submission h1 {
  margin-top: 0.5rem !important; /* override any previous rules */
  margin-bottom: 1rem;
}



  /* Hero section */
.hero {
  position: relative;
  margin-top: -1rem;
  padding-top: 0;
  text-align: center;
  transform: translateZ(0); /* fixes Safari subpixel shift */
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
}


  /* Hero h1 heading */
  .hero h1#hero-heading {
    font-size: 1.2rem;       
    line-height: 1.1;      
    margin-top: 1rem; 
    margin-bottom: 0.3rem;
    white-space: normal;
    word-break: break-word;
  }

  /* h1 */
  .hero h1 {
    font-size: 1.5rem;
    line-height: 1.2;
    margin-top: 1rem;
  }

  /* Optional h2 */
  .hero h2 {
    font-size: 0.8rem;
    line-height: 1.2;
    margin-top: 0.5rem;
  }


/* Conference details */

.conference-details h3 .highlight-text {
    display: inline-block;
    font-size: 1.3rem;
    line-height: 1.1;
    margin-top: 0;
    margin-bottom: 0;
}

  .conference-details p {
    font-size: 0.8rem;
    margin-top: 0.3rem;
  }
}



/* Intro */
.intro {
    text-align: center;
    margin-bottom: 2rem;
}
.intro h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}
.intro p {
    max-width: 700px;
    margin: 0 auto;
    color: #555;
}

/* Highlights */
.highlights {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1rem;
}
.highlight {
    flex: 1 1 calc(33% - 1.5rem);
    background-color: #f8f8f8;
    padding: 0.8rem;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #3498db;
}
.highlight:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
    border-color: #e67e22;
}
.highlight h3 {
    margin-top: 0.2;
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
    border-bottom: 3px solid transparent;

    display: inline-block;          
    border-bottom: 1px solid #BF5700; 
    padding-bottom: 0.25rem;
}
.highlight:hover h3 {
    border-color: #013c57; 
}

.highlight p {
    color: #555;
    margin: 0.25rem 0;
}

/* Responsive */
@media (max-width: 600px) {
    .highlights {
        flex-direction: column;
    }
    .highlight {
        flex: 1 1 100%;
    }
}




/* ===== Footer ===== */

footer {
  position: relative;
  background-color: #023547;
  color: white;
  text-align: center;
  padding: 3rem 1rem 1.5rem; 
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  overflow: visible;
}

/* Top edge wave */
.footer-top-edge {
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: 50px; 
  z-index: 1;
}

/* Footer menu */
.footer-nav {
  position: relative;
  z-index: 2; 
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1rem;
}
.footer-nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}
.footer-nav a:hover {
  color: #F5F1E7;
}

/* Footer text */
footer p {
  position: relative;
  z-index: 2;
  margin: 0;
  font-weight: 500;
  color: #e0e0e0;
  font-size: 0.9rem;
}

/* ==== About GAGLS ==== */

.about-gagls {
  max-width: 800px;
  margin: 0 auto 4rem auto;
  padding: 2rem 1rem;
  text-align: center;
  background-color: #ffffff; /* white */
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.about-gagls h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #023547;
  position: relative;
}

.about-gagls h1::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background-color: #F79604;
  margin: 0.5rem auto 0;
  border-radius: 2px;
}
.about-gagls p {
  color: #555;
  line-height: 1.6;
  margin-bottom: 1rem;
}

/* Conference Committee Section */
.conference-committee {
  max-width: 1200px;
  margin: 4rem auto;
  padding: 3rem 1rem;
  text-align: center;
  background-color: #fff5e6; 
  border-radius: 12px;
}

.conference-committee h2 {
  font-size: 2rem;
  margin-bottom: 2rem;
  color: #023547;
  position: relative;
}

.conference-committee h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background-color: #F79604;
  margin: 0.5rem auto 0;
  border-radius: 2px;
}


/* Committee Grid */
.committee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  justify-items: center;
}
.committee-member img {
  width: 170px;
  height: 200px;
  object-fit: cover;
  border-radius: 50%; 
  margin-bottom: 1rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
.committee-member h3 {
  margin: 0.5rem 0 0.3rem;
  font-size: 1.1rem;
}
.committee-member p {
  margin: 0;
  font-size: 0.95rem;
  color: #555;
}
.committee-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(247,150,4,0.2); 
}



/* === Abstract Submission Form === */
.abstract-submission {
  max-width: 800px;
  margin: 1rem auto;
  padding: 3rem 2rem;
  background-color: #ffffff;
  border-radius: 16px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.08);
  border: 2px solid #013c57;          
  border-radius: 12px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}


.abstract-submission h1 {
  color: #e67e22;                    
  margin-top: -2rem;               
  margin-bottom: 1rem;
  text-align: center;
  font-size: 2rem;
  font-weight: 700;

}

.abstract-submission p {
  text-align: center;
  color: #555;
  margin-bottom: 2rem;
  font-size: 1.05rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.submission-link {
  color: #e67e22;               /* burnt orange */
  text-decoration: none;       
  font-weight: 600;
  transition: color 0.3s ease, text-decoration 0.3s ease;
}

.submission-link:hover {
  color: #023547;               /* blue on hover */
  text-decoration: underline;
}



form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem 2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

label {
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #023547;
}

input[type="text"],
input[type="email"],
input[type="file"],
textarea,
select {
  padding: 0.75rem;
  border: 1.5px solid #d9e2e9;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  font-family: inherit;
}

input:focus, textarea:focus, select:focus {
  border-color: #F79604;
  outline: none;
  box-shadow: 0 0 6px rgba(247,150,4,0.2);
}

.checkbox-container {
  flex-direction: row;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: #333;
}

button[type="submit"] {
  grid-column: 1 / -1;
  margin-top: 1rem;
  padding: 1rem;
  background-color: #F79604;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

button[type="submit"]:hover {
  background-color: #bf5700;
  transform: translateY(-2px);
}

@media (max-width: 700px) {
  form {
    grid-template-columns: 1fr;
  }
  .abstract-submission {
    padding: 2rem 1.5rem;
  }
}



/* Keep your footer styling as is! Don't touch your main footer layout. */

.footer-logo {
  position: absolute;
  left: 2rem;
  top: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  height: 100%;
  z-index: 10; 
}


.logo-img {
  width: 140px;          
  height: auto;
  border-radius: 12px;   
  display: block;
}


.logo-img:hover {
  transform: scale(1.05);
}


/* ===== Mobile adjustments for Footer Logo ===== */
/* Hide footer logo on small screens */
@media (max-width: 768px) {
    .footer-logo {
        display: none;
    }
}




.home-news {
  padding: 2rem 2rem;
  background-color: #f5f5f5;  
  font-family: 'Helvetica Neue', sans-serif;
}

.home-news h2 {
  text-align: center;
  margin-top: 0rem;
  margin-bottom: 2rem;
  font-size: 2rem;
  color: #333;
}

.news-items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.news-item {
  background-color: #ffffff;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

.news-item:hover {
  transform: translateY(-5px);
}

.news-item h3 {
  margin-top: 0;
  font-size: 1.2rem;
  color: #222;
}

.news-item p {
  margin: 0.5rem 0 1rem 0;
  color: #555;
  font-size: 0.95rem;
}

.read-more {
  color: #577C8A;   
  text-decoration: none;
  font-weight: bold;
}

.read-more:hover {
  text-decoration: underline;
}


/* Main content styling */
main {
  text-align: center;
  padding: 4rem 2rem;
}

/* Bold Thank You */
.thank-you-main {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--nordic-accent-dark);
  margin-bottom: 0.3rem;
  position: relative;
}

/* Underline accent */
.thank-you-underline {
  width: 120px;
  height: 4px;
  background-color: var(--ut-orange);
  margin: 0 auto 1rem auto;
  border-radius: 2px;
}

/* Translations */
.thank-you-translations {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  color: var(--nordic-charcoal);
  font-weight: 500;
}

.thank-you-translations span {
  transition: transform 0.2s ease, color 0.2s ease;
}

.thank-you-translations span:hover {
  transform: scale(1.1);
  color: var(--nordic-accent-dark);
}

/* Success message paragraph */
.success-message p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  color: var(--nordic-charcoal);
}

/* Explore text and buttons */
.explore-text {
  font-size: 1rem;
  margin-bottom: 2rem;
  color: var(--ut-dark);
  font-style: italic;
}
.explore-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.explore-buttons a {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: bold;
  text-decoration: none;
  color: white;
  background: linear-gradient(135deg, var(--ut-orange), var(--nordic-blue));
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.explore-buttons a:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.25);
}
@media (max-width: 600px) {
  .explore-buttons { flex-direction: column; gap: 1rem; }
  .explore-buttons a { width: 80%; margin: 0 auto; }
}

/* ======== For Smaller Screens ======== */

@media (max-width: 768px) 

{

  .logo-text {
    font-size: 1.6rem;
  }

  /* Highlights stacked nicely */
  .highlights {
    flex-direction: column;
    gap: 1.5rem;
  }

  .highlight {
    flex: 1 1 100%;
    padding: 1.5rem;
  }

  /* News section grid stack */
  .news-items {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  /* Abstract form: one-column layout */
  form {
    grid-template-columns: 1fr;
  }

  /* Buttons and explore links full width */
  .explore-buttons a {
    width: 100%;
  }

}

/* Even smaller phones (≤480px) */
@media (max-width: 480px) {

  .logo-text {
    font-size: 1.3rem;
  }

  .connection-web {
    width: 40px;
  }

  .highlight h3 {
    font-size: 1.2rem;
  }

  .highlight p {
    font-size: 0.95rem;
  }
}

/* ===== Footer: Mobile Optimization ===== */

@media (max-width: 600px) {

  /* Reduce footer padding for small screens */
  footer {
    padding: 2rem 1rem;
  }

  /* Stack footer navigation links vertically */
  .footer-nav {
    flex-direction: column;
    gap: 0.8rem;
    align-items: center;
  }

  /* Make footer links more tappable */
  .footer-nav a {
    font-size: 1rem;
    padding: 0.5rem 0;
  }

  /* Ensure the top edge wave doesn't overlap content */
  .footer-top-edge {
    height: 40px;  
  }

  /* Footer text scaling */
  footer p {
    font-size: 0.8rem;
    line-height: 1.4;
  }
}

/* Extra small screens (≤480px) */
@media (max-width: 480px) {
  .footer-nav a {
    font-size: 0.9rem;
  }

  footer p {
    font-size: 0.75rem;
  }
}

/* ===== Mobile adjustments for Abstract Submission ===== */
@media (max-width: 700px) {

  /* Make the form one-column */
  .abstract-submission form {
    grid-template-columns: 1fr; /* stack all fields */
    gap: 1rem 0;                /* smaller vertical gap */
  }

  /* Ensure all inputs, selects, and textareas fill the width */
  .abstract-submission form input,
  .abstract-submission form textarea,
  .abstract-submission form select {
    width: 100%;
    box-sizing: border-box;
  }

  /* Reduce padding on the submission card */
  .abstract-submission {
    padding: 1.5rem 1rem;
  }

  /* Reduce font sizes slightly for small screens */
  .abstract-submission h1 {
    font-size: 1.8rem;
  }

  .abstract-submission p {
    font-size: 1rem;
  }

  /* Labels break long words if needed */
  .abstract-submission label {
    word-wrap: break-word;
  }

  /* Checkbox container adjusts to vertical alignment if too cramped */
  .checkbox-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  /* Submit button full width */
  .abstract-submission button[type="submit"] {
    width: 100%;
    padding: 1rem;
  }

  /* Optional: prevent horizontal scrolling */
  body, html {
    overflow-x: hidden;
  }
}


/* Login Section */

.login-section {
  max-width: 500px;
  margin: 2rem auto;
  padding: 2rem;
  background: #f9f9f9;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.login-section h1 {
  text-align: center;
  margin-bottom: 1rem;
}

.login-section form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.login-section input {
  padding: 0.5rem;
  font-size: 1rem;
}

.login-section button {
  padding: 0.75rem;
  background-color: #065171;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

/* --- Files Section --- */
.files-section {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 2rem;
  background: #f9f9f9;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  overflow-x: auto; /* allow horizontal scroll on small screens */
}

/* --- Table styling --- */
.files-table {
  width: 100%;
  border-collapse: collapse;
  font-family: inherit;
}

.files-table th,
.files-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

.files-table th {
  background-color: #065171;
  color: #fff;
}

.files-table tr:nth-child(even) {
  background-color: #f2f2f2;
}

.files-table tr:hover {
  background-color: #e0f0ff;
}

.files-table a {
  color: #065171;
  text-decoration: none;
  font-weight: 500;
}

.files-table a:hover {
  text-decoration: underline;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .files-section {
    padding: 1rem;
  }
  .files-table th, .files-table td {
    padding: 0.6rem;
  }
  .files-table {
    display: block;
    overflow-x: auto; /* horizontal scroll */
    white-space: nowrap;
  }
}


/* logout */
.logout-button {
  background-color: #e74c3c;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: bold;
  margin-left: 1rem;
}

.logout-button:hover {
  background-color: #c0392b;
}

/* --- Mobile-Friendly Adjustments for Submission Success Page --- */
@media screen and (max-width: 768px) {
  
  /* Main success message section */
  .success-message {
    padding: 1rem;
    margin: 1rem;
  }

  /* Adjust main thank you heading */
  .thank-you-main {
    font-size: 1.8rem;
    text-align: center;
  }

  /* Adjust underline */
  .thank-you-underline {
    width: 60px;
    height: 3px;
    margin: 0.5rem auto;
  }

  /* Translations: stack vertically and center */
  .thank-you-translations {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    margin-bottom: 1rem;
  }

  /* Paragraph text: center and smaller font */
  .success-message p {
    font-size: 0.95rem;
    text-align: center;
    line-height: 1.4;
  }

  /* Explore text */
  .explore-text {
    text-align: center;
    font-size: 0.9rem;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
  }

  /* Buttons container: stack vertically */
  .explore-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }

  .explore-buttons a {
    display: inline-block;
    width: 90%;
    max-width: 300px;
    text-align: center;
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
  }

  /* Logo adjustments */
  .logo-bg, .logo {
    display: flex;
    justify-content: center;
  }

  .logo-text {
    font-size: 1.2rem;
  }

  /* Footer adjustments */
  .footer-logo img {
    max-width: 120px;
    height: auto;
  }

  .footer-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
  }

  .footer-nav a {
    font-size: 0.85rem;
  }
}

/* Transform hamburger into cross when menu is open */
.menu-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.cfp .hero h1 {
    font-size: 2rem; 
    line-height: 1.2;
}

#hero-heading {
    font-size: 2.2rem;
    line-height: 1.2;
}


.conference-details {
    margin-top: -2rem; 
}

.hero {
    padding-bottom: 1.5rem; 
}

.deadline {
    font-weight: bold;
    color: red; 
}

.topics-heading {
    margin: 0;        
    padding: 0; 
}

.conference-details h3 {
  margin-bottom: 0.3rem;
  font-size: 1.8rem;     
  font-weight: 600; 
}

.conference-details p {
  margin: 0.2rem 0;
  line-height: 1.4;     
}

.conference-details .highlight-text {
  color: #BF5700;
  font-size: 2rem; 
}


.previous-confs {
  width: 100%;
  border-collapse: collapse;
  font-family: inherit;
}

.previous-confs th,
.previous-confs td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

.previous-confs th {
  background-color: var(--ut-orange);
  color: #fff;
}

.previous-confs .iteration {

  background-color: var(--nordic-blue);
  color: #fff;

}

.previous-confs tr:nth-child(even) {
  background-color: #f2f2f2;
}

.previous-confs tr:hover {
  background-color: #e0f0ff;
}

.previous-confs a {
  color: #065171;
  text-decoration: none;
  font-weight: 500;
}

.previous-confs a:hover {
  text-decoration: underline;
}

/* UT Tower Banner */
.welcome {
  margin-top: 2rem;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  width: 100vw;
  overflow: hidden;
  max-height: 400px;
}

.welcome img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ✅ Mobile */
@media (max-width: 768px) {
  .welcome {
    width: 100vw;          
    margin-left: 50%;       
    transform: translateX(-50%); 
    left: 0;
    right: 0;
    overflow: hidden;
    max-width: 100vw;
    box-sizing: border-box;
  }

  body {
    overflow-x: hidden;
  }
}



.timeline {
  position: relative;
  margin: 3rem auto;
  padding-left: 2rem;
  border-left: 3px solid #ff7b00; 
  max-width: 600px;
}

.timeline-item {
  position: relative;
  margin-bottom: 2rem;
  padding-left: 1rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: #ff7b00;
  border-radius: 50%;
}

.timeline-date {
  font-weight: bold;
  color: #333;
}

.timeline-event {
  color: #555;
  font-size: 1rem;
}

.keynote {
  max-width: 900px;
  margin: -3rem auto;
  font-family: system-ui, sans-serif;
  color: #222;
  line-height: 1.6;
}

.keynote h2 {
  font-size: 1.8rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid #ddd;
  display: inline-block;
  padding-bottom: 0.3rem;
}

.speaker-card {
  display: flex;
  flex-direction: row;
  gap: 2rem;
  align-items: flex-start;
}

.speaker-left {
  flex: 0 0 280px;
  margin-top: 6rem;
  text-align: center;
}

.speaker-left img {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Name, position */
.name-title h3 {
  margin: 0;
  font-size: 1.2rem;
}

.name-title .position,
.name-title .university {
  margin: 0;
  font-style: italic;
  font-size: 0.95rem;
}

.speaker-right {
  flex: 1;
  text-align: left;
}

.speaker-right h2 {
  font-size: 1.8rem;
  border-bottom: 2px solid var(--rhein-amber);
  display: inline-block; 
  padding-bottom: 0.3rem;
  text-align: center; 
  width: 100%; 
  margin-bottom: 1rem;
}


/* stack columns on small screens */
@media (max-width: 700px) {
  .speaker-card {
    flex-direction: column;
    align-items: center;
  }

  .speaker-right {
    text-align: center;
  }
}

.speaker-links {
  margin: 4rem 0;
  text-align: center;
  font-family: 'Inter', sans-serif;
}

.speaker-links h3 {
  font-size: 1.6rem;
  font-weight: 400;
  margin-bottom: 1rem;
  color: #111;
}

.links-container {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.link-card {
  display: inline-block;
  padding: 1rem 1.5rem;
  background: var(--ut-orange);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  text-decoration: none;
  color: #fff;
  font-weight: 500;
  transition: all 0.3s ease;
}

.link-card span {
  display: block;
}

.link-card:hover {
  background: var(--nordic-blue);
  color: #fff;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

@media (max-width: 480px) {
  .links-container {
    flex-direction: column;
    align-items: center;
  }

  .link-card {
    width: 80%; 
    text-align: center;
    padding: 1.2rem 1.5rem;
    font-size: 1rem;
  }
}

#submissionMessage {
  margin-top: 1rem;
  font-size: 0.95rem;
}

/* registration form */

.registration-section {
  display: flex;
  flex-direction: column;
  align-items: center; 
  justify-content: flex-start;
  padding: 1rem 1rem;
  text-align: center;
}

#regForm {
  display: flex;
  justify-content: center;
  width: 100%;
}

.form-card {
  width: 100%;
  max-width: 600px;
  background-color: #fff;
  border-radius: 12px;
  border: 3px solid var(--ut-orange);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  box-sizing: border-box;
}

/* ====== Form Groups ====== */
.form-group {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.form-group label {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* ====== Inputs, Selects, Textareas ====== */
input[type="text"],
input[type="email"],
select,
textarea {
  padding: 0.7rem 1rem;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid #ccc;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: #0056d4;
  box-shadow: 0 0 0 2px rgba(0,86,212,0.2);
  outline: none;
}

/* ====== Button ====== */
button {
  padding: 0.8rem 1.5rem;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  background-color: #0056d4;
  color: #fff;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #003a9e;
}

/* ====== Success & Error Messages ====== */
.success, .error {
  font-weight: 600;
  margin-top: 1rem;
  display: none;
  text-align: center;
}

.success { color: var(--ut-orange); }
.error { color: red; }

/* ====== Responsive ====== */
@media (max-width: 600px) {
  .form-card {
    padding: 1.5rem;
  }

  button {
    width: 100%;
  }

  .registration-section p {
    font-size: 0.95rem;
  }
}

.timeline-date {
  display: flex;
  flex-direction: column;
}

.timeline-date .old-date {
  text-decoration: line-through;
  opacity: 0.6;
}

.timeline-date .new-date {
  font-weight: 600;
  color: #000;
}

/* ==== Program ==== */
    .wrap{
      max-width: 980px;
      margin: 0 auto;
      padding: 2px 5px 5px;
    }
    
    .sub{
      margin: 0 0 22px;
      color: var(--muted);
      max-width: 70ch;
    }
    .session{
      margin-top: 5px;
      border: 1px solid var(--border);
      border-radius: 14px;
      --border: var(--nordic-blue);
      overflow: hidden;
      background: #fff;
    }

    .session.break{
      border: 1px solid var(--ut-orange);
      --border: var(--ut-orange);
    }

    .session-header{
      padding: 14px 16px;
      background: var(--nordic-blue);
      color: #ffffff;
      border-bottom: 1px solid var(--border);
      display:flex;
      gap:10px;
      align-items:baseline;
      justify-content:space-between;
      flex-wrap:wrap;
    }
    .session-header h2{
      margin:0;
      font-size: 1.05rem;
      letter-spacing: -0.01em;
    }
    .session-header .meta{
      margin:0;
      color: var(--muted);
      font-size: .95rem;
    }

    .session-header.burnt-orange{
      background-color: #BF5700;
      color: #ffffff;
    }

    .session-header.burnt-orange h2,
    .session-header.burnt-orange .meta{
      color: #ffffff;
    }

    .items{
      display:flex;
      flex-direction:column;
    }

    .item{
      display:grid;
      grid-template-columns: 190px 1fr 260px;
      padding: 14px 16px;
      border-top: 1px solid var(--border);
      align-items: stretch;
    }

    /* spacing inside each column */
    .item > .time,
    .item > .main,
    .item > .presenter{
      padding: 0 14px;
    }

    /* padding */
    .item > .time{ padding-left: 0; }
    .item > .presenter{ padding-right: 0; }

    /* vertical dividers */
    .item > .time{
      border-right: 1px solid var(--border);
    }
    .item > .main{
      border-right: 1px solid var(--border);
    }

    /* wrap */
    .item > *{ min-width: 0; }

    .item > :nth-child(2){
      padding-left: 6px;
    }

    .presenter{
      text-align:right;
      font-size:.95rem;
      color:var(--muted);
    }

    .presenter strong{
      display:block;
      color:var(--text);
      font-weight:600;
    }  

    .item:first-child{ border-top:none; }

    .time{
      font-variant-numeric: tabular-nums;
      color: var(--muted);
      white-space: nowrap;          
      font-size: .95rem;

      padding-right: 16px;          
      margin-right: 8px;           
      border-right: 1px solid 
      var(--border);
    }

    .title{
      margin: 0;
      letter-spacing: -0.01em;
      text-align: left;
      overflow-wrap: anywhere;
      word-break: break-word;
    }

    .details{
      margin: 6px 0 0;
      color: var(--muted);
      font-size: .95rem;
    }

    .type-break .title{ font-weight: 600; }
    .type-break .chip{ background:#ecfeff; border-color:#cffafe; color:#155e75; }
    .type-keynote .chip{ background:#fef3c7; border-color:#fde68a; color:#92400e; }
    .type-social .chip{ background:#ecfccb; border-color:#d9f99d; color:#365314; }


@media (max-width: 760px){

  .wrap{
    padding: 2px 5px 5px;
  }

  .session{
    border-radius: 12px;
  }

  .session-header{
    padding: 12px 14px;
    gap: 6px;
  }

  .session-header h2{
    font-size: 1rem;
  }

  .session-header .meta{
    font-size: .9rem;
    opacity: .95;
  }

  /* stack rows */
  .item{
    grid-template-columns: 1fr;
    padding: 12px 14px;
    align-items: start;
  }

  /* remove desktop column */
  .item > .time,
  .item > .main,
  .item > .presenter{
    padding: 0;
  }

  /* remove vertical dividers */
  .item > .time,
  .item > .main{
    border-right: none;
  }

  /* remove desktop "nth-child(2)" */
  .item > :nth-child(2){
    padding-left: 0;
  }

  .time{
    display: inline-block;
    width: fit-content;
    margin: 0 0 8px 0;
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #fff;
    white-space: nowrap;
    line-height: 1.1;

    border-right: none;
    margin-right: 0;
    padding-right: 10px;
  }

  .title{
    font-size: 1rem;
    line-height: 1.25;
  }

  .details{
    font-size: .95rem;
  }

  .presenter{
    text-align: left;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px dashed var(--border);
    font-size: .95rem;
  }
}

@media (max-width: 480px){

  .wrap{
    padding: 2px 5px 5px;
  }

  .session-header{
    padding: 10px 12px;
  }

  .item{
    padding: 10px 12px;
  }

  .time{
    font-size: .88rem;
    padding: 4px 9px !important;
  }

  .title{
    font-size: .98rem;
  }

  .details,
  .presenter{
    font-size: .93rem;
  }
}

/* Abstract box */
input[type="checkbox"]{
  display:none;
}

/* Button style */
.lbl-toggle{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:12px 16px;
  background:var(--nordic-blue);
  color:white;
  font-weight:600;
  border-radius:8px;
  cursor:pointer;
  user-select:none;
  transition:background .2s ease, transform .1s ease;
}

/* hover */
.lbl-toggle:hover{
  background:var(--ut-orange);
}

/* click effect */
.lbl-toggle:active{
  transform:scale(.98);
}

/* arrow indicator */
.lbl-toggle::after{
  content:"▼";
  font-size:12px;
  transition:transform .25s ease;
}

/* rotate  */
input[type="checkbox"]:checked + .lbl-toggle::after{
  transform:rotate(180deg);
}

/* collapse */
.collapsible-content {
  max-height: 0px;
  overflow: hidden;
  text-align: left;
  transition: max-height 0.50s ease-in-out;
}

/* Box size */
input[type='checkbox']:checked + .lbl-toggle + .collapsible-content {
  max-height: 200vh;
  text-align: left;
}