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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f8f9fa;
    min-height: 100vh;
}

.container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 280px;
    background: #ffffff;
    padding: 20px;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.08);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    border-right: 1px solid #e9ecef;
}

.sidebar h2 {
    color: #2c3e50;
    margin-bottom: 30px;
    font-size: 24px;
    text-align: center;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
    font-weight: 600;
}

.sidebar h3 {
    color: #8e44ad;
    margin: 20px 0 10px 0;
    font-size: 16px;
}

.sidebar h3.day-section {
    color: #27ae60;
}

.day-header {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 20px 30px;
    margin: 40px 0 30px 0;
    border-radius: 10px;
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
    border-left: 5px solid #2980b9;
}

.day-header:first-of-type {
    margin-top: 0;
}

.nav-item {
    display: block;
    padding: 12px 15px;
    margin: 8px 0;
    color: #555;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
    border-left: 4px solid transparent;
}

.nav-item:hover {
    background: #3498db;
    color: white;
    border-left-color: #2980b9;
    transform: translateX(5px);
}

.nav-item.active {
    background: #3498db;
    color: white;
    border-left-color: #2980b9;
}

.main-content {
    margin-left: 280px;
    padding: 30px;
    flex: 1;
}

.header {
    text-align: center;
    margin-bottom: 40px;
    background: #ffffff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    border-left: 5px solid #3498db;
}

.header h1 {
    font-size: 36px;
    margin-bottom: 10px;
    color: #2c3e50;
    font-weight: 700;
}

.header p {
    font-size: 18px;
    color: #7f8c8d;
    font-weight: 500;
}

.event-grid {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 40px;
}

.event-box {
    background: #ffffff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-left: 5px solid #3498db;
    border: 1px solid #e9ecef;
}

.event-box:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.event-title {
    font-size: 22px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
}

.event-type {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    margin-left: 10px;
    text-transform: uppercase;
}

.type-gamified {
    background: #8e44ad;
    color: white;
}

.type-technical {
    background: #27ae60;
    color: white;
}

.type-gamified-technical {
    background: #e006dd;
    color: white;
}

.type-misc {
    background: #f39c12;
    color: white;
}

.event-description {
    color: #5a6c7d;
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 17px;
}

.event-duration {
    display: flex;
    align-items: center;
    color: #7f8c8d;
    font-weight: 600;
    font-size: 16px;
    margin-top: 5px;
}

.duration-icon {
    margin-right: 8px;
}

.prize-section {
    background: #2c3e50;
    color: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    margin-top: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.prize-section h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.prize-list {
    font-size: 18px;
    line-height: 1.8;
}

.hamburger {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    background: #3498db;
    color: white;
    border: none;
    padding: 10px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 18px;
}

.hamburger:hover {
    background: #2980b9;
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .sidebar {
        width: 280px;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1000;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 80px 20px 30px 20px;
    }

    .header {
        padding: 20px;
        margin-bottom: 30px;
    }

    .header h1 {
        font-size: 28px;
    }

    .header p {
        font-size: 16px;
    }

    .event-box {
        padding: 20px;
    }

    .event-title {
        font-size: 20px;
        flex-direction: column;
        align-items: flex-start;
    }

    .event-type {
        margin-left: 0;
        margin-top: 8px;
    }

    .event-description {
        font-size: 16px;
    }

    .prize-section {
        padding: 20px;
    }

    .prize-section h3 {
        font-size: 20px;
    }

    .prize-list {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 80px 15px 20px 15px;
    }

    .header h1 {
        font-size: 24px;
    }

    .event-title {
        font-size: 18px;
    }

    .event-description {
        font-size: 15px;
    }
}