* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    width: 100%;
}

h1 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 30px;
    font-size: 2.2em;
    font-weight: 300;
}

.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.document-card {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 20px;
    min-height: 140px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.document-card:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.document-card h3 {
    color: #495057;
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1.3em;
}

.document-card p {
    color: #6c757d;
    margin-bottom: 15px;
    font-size: 0.95em;
    flex-grow: 1;
}

.document-link {
    display: inline-block;
    color: #007bff;
    text-decoration: none;
    font-weight: 500;
    padding: 10px 20px;
    border: 1px solid #007bff;
    border-radius: 4px;
    text-align: center;
    align-self: flex-start;
}

.document-link:hover {
    background-color: #007bff;
    color: white;
}

.telegram-section {
    border-top: 2px solid #e9ecef;
    padding-top: 30px;
    margin-top: 30px;
}

.telegram-section h2 {
    color: #495057;
    margin-bottom: 20px;
    font-size: 1.8em;
}

.footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #e9ecef;
    color: #6c757d;
    font-size: 0.9em;
}

/* Медиа-запросы для мобильных устройств */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .container {
        padding: 20px;
        border-radius: 8px;
    }
    
    h1 {
        font-size: 1.8em;
        margin-bottom: 20px;
    }
    
    .documents-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-bottom: 20px;
    }
    
    .document-card {
        padding: 15px;
        min-height: 120px;
    }
    
    .document-card h3 {
        font-size: 1.2em;
    }
    
    .document-card p {
        font-size: 0.9em;
    }
    
    .document-link {
        padding: 8px 16px;
        font-size: 0.9em;
        width: 100%;
    }
    
    .telegram-section {
        padding-top: 20px;
        margin-top: 20px;
    }
    
    .telegram-section h2 {
        font-size: 1.5em;
    }
    
    .footer {
        margin-top: 30px;
        font-size: 0.85em;
    }
}

/* Медиа-запросы для планшетов */
@media (min-width: 769px) and (max-width: 1024px) {
    body {
        padding: 15px;
    }
    
    .container {
        padding: 35px;
    }
    
    h1 {
        font-size: 2.0em;
    }
    
    .documents-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 18px;
    }
    
    .document-card {
        padding: 18px;
    }
    
    .document-link {
        padding: 9px 18px;
    }
}

/* Медиа-запросы для больших экранов */
@media (min-width: 1025px) {
    body {
        padding: 40px 20px;
    }
    
    .container {
        padding: 50px;
    }
    
    h1 {
        font-size: 2.5em;
        margin-bottom: 40px;
    }
    
    .documents-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 25px;
        margin-bottom: 40px;
    }
    
    .document-card {
        padding: 25px;
        min-height: 160px;
    }
    
    .document-card h3 {
        font-size: 1.4em;
    }
    
    .document-link {
        padding: 12px 24px;
    }
    
    .telegram-section {
        padding-top: 40px;
        margin-top: 40px;
    }
    
    .telegram-section h2 {
        font-size: 1.9em;
    }
}

/* Медиа-запросы для очень маленьких экранов */
@media (max-width: 480px) {
    body {
        padding: 5px;
    }
    
    .container {
        padding: 15px;
        border-radius: 6px;
    }
    
    h1 {
        font-size: 1.6em;
        margin-bottom: 15px;
    }
    
    .documents-grid {
        gap: 12px;
    }
    
    .document-card {
        padding: 12px;
        min-height: 100px;
    }
    
    .document-card h3 {
        font-size: 1.1em;
        margin-bottom: 8px;
    }
    
    .document-card p {
        font-size: 0.85em;
        margin-bottom: 12px;
    }
    
    .document-link {
        padding: 6px 12px;
        font-size: 0.85em;
    }
    
    .telegram-section h2 {
        font-size: 1.3em;
    }
}