:root {
    --primary-color: #03a9f4;
    --primary-dark: #0288d1;
    --primary-light: #b3e5fc;
    --accent-color: #ffc107;
    --text-primary: #212121;
    --text-secondary: #757575;
    --text-icons: #FFFFFF;
    --divider-color: #BDBDBD;
    --light-bg: #f5f5f5;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

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

.info {
    background: var(--primary-color);
    color: var(--text-icons);
    padding: 80px 0;
    text-align: center;
}

.info h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

/* Hero Section */
.hero {
    background: url('img/main.png');
    background-size: 100% 100%;
    background-position: center;
    background-repeat: no-repeat;
    background-color: var(--primary-dark);
    color: white;
    text-align: center;
    padding: 100px 0;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    font-family: 'Tahoma', sans-serif;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    font-weight: 700;
    -webkit-text-stroke: 1px black;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    font-weight: 600;
    -webkit-text-stroke: 1px black;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero h3 {
    font-size: 1rem;
    margin-bottom: 30px;
    font-weight: 600;
    color: black;
}

.hero p {
    font-size: 1.2rem;
    margin: 10px 0;
    -webkit-text-stroke: 0.5px black;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* Speakers Section */
.speakers {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.speakers h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
    color: var(--primary-dark);
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 300px));
    gap: 30px;
    justify-content: center;
    max-width: 1000px;
    margin: 0 auto;
}

.speaker {
    text-align: center;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.speaker-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 20px;
    background-color: #ddd;
    overflow: hidden;
}

.speaker-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.speaker h3 {
    color: var(--text-primary);
    font-size: 1.2rem;
}

/* Schedule Section */
.schedule {
    padding: 80px 0;
}

.schedule h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
    color: var(--primary-dark);
}

.schedule-notice {
    text-align: center;
    margin-top: -20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
}

.schedule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.day {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.day h3 {
    color: var(--primary-dark);
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.day ul {
    list-style: none;
}

.day li {
    padding: 10px 0;
    border-bottom: 1px solid var(--divider-color);
}

.day li:last-child {
    border-bottom: none;
}

/* CTA Section */
.cta {
    background: var(--primary-dark);
    color: var(--text-icons);
    padding: 80px 0;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
}

.button {
    display: inline-block;
    padding: 15px 40px;
    background-color: var(--accent-color);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.button:hover {
    background-color: #ffb300;
    transform: translateY(-2px);
}

/* Organizers Section */
.organizers {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.organizers h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
    color: var(--primary-dark);
}

.organizer-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.organizer-logo img {
    max-width: 300px;
    height: auto;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

/* Footer */
footer {
    background-color: var(--primary-light);
    padding: 20px 0;
    text-align: center;
    color: var(--text-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        font-family: 'Tahoma', sans-serif;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }

    .info h2 {
        font-size: 1.0rem;
    }

    .cta h2 {
        font-size: 1.5rem;
    }
    
    .speakers-grid,
    .schedule-grid {
        grid-template-columns: 1fr;
    }
}