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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

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

/* Navigation Bar */
.navbar {
    background-color: #1a3a52;
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    flex-wrap: wrap;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
    color: #ffcc00;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #1a3a52 0%, #2c5aa0 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero .subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Main Content */
main {
    min-height: calc(100vh - 200px);
}

.content {
    background-color: white;
    padding: 3rem 0;
}

.content h1 {
    color: #1a3a52;
    margin-bottom: 1rem;
    font-size: 2.5rem;
}

.content h2 {
    color: #2c5aa0;
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #ffcc00;
}

.content h3 {
    color: #1a3a52;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.content p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.content ul, .content ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.content li {
    margin-bottom: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: #ffcc00;
    color: #1a3a52;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
}

.btn:hover {
    background-color: #ffb800;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* Welcome Section */
.welcome {
    background-color: white;
    padding: 3rem 0;
}

.welcome h2 {
    color: #2c5aa0;
    text-align: center;
    margin-bottom: 2rem;
}

.welcome p {
    font-size: 1.1rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

/* Participant Cards */
.participant {
    background-color: #f9f9f9;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-left: 4px solid #2c5aa0;
    border-radius: 4px;
}

.participant h3 {
    color: #1a3a52;
    margin-bottom: 0.5rem;
}

.participant p {
    margin-bottom: 0.5rem;
}

/* Hotel Cards */
.hotel {
    background-color: #f9f9f9;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.hotel h3 {
    color: #1a3a52;
    margin-bottom: 0.5rem;
}

.hotel p {
    margin-bottom: 0.5rem;
}

/* Registration Table */
.registration-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.registration-table th {
    background-color: #1a3a52;
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: bold;
}

.registration-table td {
    padding: 1rem;
    border-bottom: 1px solid #ddd;
}

.registration-table tr:hover {
    background-color: #f9f9f9;
}

/* Registration Form */
.registration-form {
    background-color: #f9f9f9;
    padding: 2rem;
    border-radius: 4px;
    margin: 2rem 0;
    max-width: 600px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #1a3a52;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2c5aa0;
    box-shadow: 0 0 5px rgba(44, 90, 160, 0.3);
}

.registration-form .btn {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
}

/* Footer */
footer {
    background-color: #1a3a52;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 2rem;
}

footer p {
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero .subtitle {
        font-size: 1rem;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .content h1 {
        font-size: 1.8rem;
    }

    .content h2 {
        font-size: 1.3rem;
    }

    .registration-table {
        font-size: 0.9rem;
    }

    .registration-table th,
    .registration-table td {
        padding: 0.7rem;
    }
}