* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.acm-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 600;
}

.acm-logo i {
    font-size: 2rem;
}

.badge {
    background: rgba(255,255,255,0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #60a5fa 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.event-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.university-name {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.event-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.date-time, .location {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    background: rgba(255,255,255,0.1);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    backdrop-filter: blur(10px);
}

.location-link {
    text-decoration: none;
    color: white;
}

/* Poster Section */
.poster-section {
    padding: 4rem 0;
    background: white;
}

.poster-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.poster-image {
    text-align: center;
}

.poster-img {
    width: 100%;
    max-width: 400px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.poster-info {
    display: flex;
    flex-direction: column;
}

.poster-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.poster-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #64748b;
    margin-bottom: 2rem;
}

.poster-download-btn {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    width: fit-content;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.poster-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

.poster-download-btn::before {
    content: '⬇ ';
}

.poster-download-btn::after {
    content: ' ';
}

@media (max-width: 768px) {
    .poster-content {
        grid-template-columns: 1fr;
    }
    
    .poster-title {
        font-size: 1.5rem;
    }
}

/* Speaker Section */
.speaker-section {
    padding: 4rem 0;
    background: white;
}

.speaker-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: center;
}

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

.photo-placeholder {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border: 5px solid #f1f5f9;
}

.photo-placeholder i {
    font-size: 5rem;
    color: #64748b;
    margin-bottom: 1rem;
}

.photo-text {
    font-weight: 600;
    color: #475569;
    font-size: 1.1rem;
}

.speaker-image {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border: 5px solid #f1f5f9;
}

.speaker-name {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.speaker-position {
    font-size: 1.3rem;
    font-weight: 600;
    color: #3b82f6;
    margin-bottom: 0.5rem;
}

.speaker-institution {
    font-size: 1.1rem;
    color: #64748b;
    margin-bottom: 2rem;
}

.speaker-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
}

.stat-label {
    font-size: 0.9rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Talk Section */
.talk-section {
    padding: 4rem 0;
    background: #f8fafc;
}

.talk-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 2rem;
    text-align: center;
}

.talk-synopsis h4 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #3b82f6;
    margin-bottom: 1.5rem;
}

.talk-synopsis p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: justify;
}

/* Bio Section */
.bio-section {
    padding: 4rem 0;
    background: white;
}

.bio-content h4 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 2rem;
    text-align: center;
}

.bio-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: justify;
}

.awards-section {
    margin: 2rem 0;
    padding: 2rem;
    background: #f8fafc;
    border-radius: 12px;
    border-left: 4px solid #3b82f6;
}

.awards-section h5 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.award {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    font-weight: 500;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

/* Registration Section */
.registration-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    text-align: center;
}

.registration-content h4 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.registration-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section {
    margin-top: 3rem;
}

.cta-button {
    background: white;
    color: #3b82f6;
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

.contact-info {
    margin-top: 2rem;
    opacity: 0.9;
}

/* Footer */
/* Base Footer Styles */
.footer {
  background-color: #0d1128;
  color: #fff;
  padding: 15vh 10vw;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-top: auto;
  flex-wrap: wrap;
}

.footer-column {
  flex: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: center;
  width: max-content;
  margin-bottom: 2vh;
}

.footer-column:nth-last-of-type(1) {
  align-items: flex-end;
}

.footer-column:nth-last-of-type(1)>div {
  width: 100%;
  display: flex;
  justify-content: center !important;
}

.footer-column .title {
  font-size: 1.5vw;
  font-weight: 500;
  margin-bottom: 1.5vh;
  margin-top: 5vh;
  color: #fff;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.footer-column a {
  text-decoration: none;
  color: #fff;
  margin-bottom: 1vh;
  font-size: 1vw;
  font-weight: 400;
  transition: color 0.3s ease;
}

.footer-column:nth-of-type(1) .title {
  font-size: 2vw;
}

.footer-column:nth-of-type(1) a {
  font-size: 1.5vw;
}

.footer-column .social-icons {
  display: flex;
  gap: 10px;
  margin-top: 0;
  color: #fff;
}

.footer-column .social-icons img {
  width: 28px;
  height: 28px;
  cursor: pointer;
  transition: transform 0.3s ease;
  filter: invert(1);
}

.footer-column .social-icons img:hover {
  transform: scale(1.1);
}

.footer-column .title .svg {
  width: 100%;
  height: auto;
  margin-right: 0.5vw;
  margin-bottom: 1vh;
}

.footer-column .title .logo,
.footer-column .title .acmlogo {
  width: 5vw;
  margin-right: 0.5vw;
}

.footer-column .title .name {
  filter: invert(1);
}

.footer-column .email,
.footer-column .address {
  width: 100%;
  display: flex;
  align-items: baseline;
  justify-content: flex-start;
  color: #fff;
  margin: 0.5vh 0.25vw;
}

.footer-column .email i,
.footer-column .address i {
  font-size: 1.5vw;
  margin-right: 0.5vw;
  margin-top: 0.5vh;
  color: #fff;
}

#map {
  width: 90%;
  height: 40vh;
  margin-top: 4vh;
}

#map * {
  overflow: visible !important;
}

/* Tablet Styles */
@media (max-width: 1024px) {
  .footer {
    padding: 12vh 8vw;
    flex-direction: column-reverse;
    align-items: center;
    text-align: center;
  }

  .footer-column {
    width: 100%;
    align-items: center;
  }

  .footer-column:nth-last-of-type(1) {
    align-items: center;
  }

  .footer-column .title {
    font-size: 2.5vw;
    margin-top: 4vh;
    justify-content: center;
  }

  .footer-column a {
    font-size: 1.75vw;
  }

  .footer-column:nth-of-type(1) .title {
    font-size: 3vw;
  }

  .footer-column:nth-of-type(1) a {
    font-size: 2vw;
  }

  .footer-column .social-icons img {
    width: 32px;
    height: 32px;
  }

  .footer-column .title .logo,
  .footer-column .title .acmlogo {
    width: 7vw;
  }

  .footer-column .email i,
  .footer-column .address i {
    font-size: 2vw;
  }

  #map {
    width: 95%;
    height: 35vh;
    margin-top: 3vh;
  }
}

/* Mobile Styles */
@media (max-width: 1024px) {
  .footer {
    padding: 8vh 4vw;
    flex-direction: column-reverse;
    align-items: center;
    text-align: start;
  }

  .footer-column {
    width: 90%;
    align-items: center;
  }

  .footer-column .title {
    font-size: 5vw;
    margin-top: 3vh;
    justify-content: center;
  }

  .footer-column a {
    font-size: 3vw;
    font-weight: 300;
  }

  .footer-column:nth-of-type(1) .title {
    font-size: 5vw;
  }

  .footer-column:nth-of-type(1) a {
    font-size: 4vw;
  }

  .footer-column .social-icons {
    justify-content: center;
  }

  .footer-column .social-icons img {
    width: 24px;
    height: 24px;
  }

  .footer-column .title .logo,
  .footer-column .title .acmlogo {
    width: 15vw;
  }

  .footer-column .email i,
  .footer-column .address i {
    font-size: 4vw;
  }

  #map {
    width: 80%;
    height: 25vh;
    margin-top: 3vh;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
    .event-title {
        font-size: 2rem;
    }
    
    .speaker-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .speaker-stats {
        justify-content: center;
    }
    
    .event-meta {
        flex-direction: column;
        gap: 1rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .awards-grid {
        grid-template-columns: 1fr;
    }
    
    .photo-placeholder {
        width: 200px;
        height: 200px;
    }
    
    .speaker-image {
        width: 200px;
        height: 200px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-section {
        padding: 2rem 0;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .event-title {
        font-size: 1.8rem;
    }
    
    .speaker-name {
        font-size: 2rem;
    }
    
    .talk-title {
        font-size: 1.8rem;
    }
}

/* Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.poster-content,
.speaker-content,
.talk-content,
.bio-content,
.registration-content {
    animation: fadeInUp 0.8s ease-out;
}