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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 0;
    margin: 0;
    color: #333;
    border: none;
    outline: none;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.2em;
    opacity: 0.9;
}

main {
    display: grid;
    gap: 25px;
    margin-bottom: 30px;
}

.card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.card h2 {
    color: #667eea;
    margin-bottom: 20px;
    font-size: 1.8em;
    border-bottom: 3px solid #667eea;
    padding-bottom: 10px;
}

.time-display {
    font-size: 1.5em;
    font-weight: bold;
    color: #764ba2;
    padding: 20px;
    background: #f5f5f5;
    border-radius: 10px;
    margin-bottom: 20px;
    text-align: center;
    border: 2px dashed #667eea;
}

.btn {
    padding: 12px 30px;
    font-size: 1em;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    width: 100%;
    margin-top: 10px;
}

.btn-secondary:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(245, 87, 108, 0.4);
}

.form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

input[type="text"] {
    padding: 15px;
    font-size: 1em;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    transition: border-color 0.3s ease;
    width: 100%;
}

input[type="text"]:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.response {
    margin-top: 20px;
    padding: 15px;
    background: #e8f5e9;
    border-radius: 8px;
    border-left: 4px solid #4caf50;
    display: none;
}

.response.show {
    display: block;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card ul {
    list-style: none;
    padding-left: 0;
}

.card ul li {
    padding: 10px 0;
    font-size: 1.1em;
    border-bottom: 1px solid #e0e0e0;
}

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

footer {
    text-align: center;
    color: white;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    font-size: 1.1em;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }
    
    .card {
        padding: 20px;
    }
    
    .time-display {
        font-size: 1.2em;
    }
}