/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.last-updated {
    font-size: 0.95rem;
    opacity: 0.9;
    font-weight: 300;
}

#update-date {
    font-weight: 600;
}

/* Main Content */
main {
    padding: 40px 30px;
}

section {
    margin-bottom: 35px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e0e0e0;
}

section:last-of-type {
    border-bottom: none;
}

.intro {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    margin-bottom: 30px;
}

.intro p {
    font-size: 1.05rem;
    color: #555;
    margin: 0;
}

h2 {
    color: #667eea;
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 15px;
    margin-top: 10px;
}

h3 {
    color: #764ba2;
    font-size: 1.3rem;
    font-weight: 600;
    margin-top: 20px;
    margin-bottom: 12px;
}

p {
    margin-bottom: 15px;
    color: #444;
    font-size: 1rem;
    text-align: justify;
}

ul {
    margin-left: 25px;
    margin-bottom: 15px;
    margin-top: 10px;
}

li {
    margin-bottom: 10px;
    color: #555;
    line-height: 1.7;
}

li::marker {
    color: #667eea;
}

/* Contact Information */
.contact-info {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-top: 15px;
}

.contact-info p {
    margin-bottom: 10px;
    color: #555;
}

.contact-info strong {
    color: #667eea;
}

/* Acknowledgment Section */
.acknowledgment {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 25px;
    border-radius: 8px;
    border: 2px solid #667eea;
    margin-top: 30px;
}

.acknowledgment p {
    font-weight: 500;
    color: #333;
    text-align: center;
    font-size: 1.05rem;
    margin: 0;
}

/* Footer */
footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 25px;
    margin-top: 20px;
}

footer p {
    margin: 0;
    color: #ecf0f1;
    font-size: 0.95rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    header {
        padding: 30px 20px;
    }

    header h1 {
        font-size: 2rem;
    }

    main {
        padding: 25px 20px;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.2rem;
    }

    .intro {
        padding: 20px;
    }

    ul {
        margin-left: 20px;
    }

    section {
        margin-bottom: 25px;
        padding-bottom: 20px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.75rem;
    }

    .last-updated {
        font-size: 0.85rem;
    }

    main {
        padding: 20px 15px;
    }

    h2 {
        font-size: 1.3rem;
    }

    h3 {
        font-size: 1.1rem;
    }

    p {
        font-size: 0.95rem;
    }

    .intro {
        padding: 15px;
    }

    .contact-info {
        padding: 15px;
    }

    .acknowledgment {
        padding: 20px;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        padding: 0;
    }

    .container {
        box-shadow: none;
        border-radius: 0;
    }

    header {
        background: #667eea;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    footer {
        background: #2c3e50;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    section {
        page-break-inside: avoid;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background: #667eea;
    color: white;
}

::-moz-selection {
    background: #667eea;
    color: white;
}