/* Base Styles */
body {
    font-family: Arial, sans-serif;
    margin: 40px;
    background-color: #f5f5f5;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1, h2, h3 {
    color: #333;
    text-align: center;
}

/* Form Styles */
form {
    margin: 20px 0;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="file"],
select,
textarea {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

input[type="submit"],
button {
    background-color: #4CAF50;
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    margin: 10px 0;
}

input[type="submit"]:hover,
button:hover {
    background-color: #45a049;
}

/* Alert Styles */
.success {
    color: green;
    background: #d4edda;
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0;
}

.error {
    color: red;
    background: #f8d7da;
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0;
}

.warning {
    color: #856404;
    background: #fff3cd;
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0;
    border: 1px solid #ffeaa7;
}

/* Links */
.links {
    text-align: center;
    margin: 20px 0;
}

.links a {
    color: #007bff;
    text-decoration: none;
    margin: 0 10px;
}

.links a:hover {
    text-decoration: underline;
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

th {
    background-color: #f2f2f2;
}

/* Button Variants */
.btn-danger {
    background-color: #dc3545;
}

.btn-danger:hover {
    background-color: #c82333;
}

/* Menu Styles */
.menu {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
}

.menu a {
    background: #007bff;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 4px;
}

.menu a:hover {
    background: #0056b3;
}

/* File Management */
.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border: 1px solid #ddd;
    margin: 5px 0;
    border-radius: 4px;
}

.file-actions {
    display: flex;
    gap: 10px;
}

.file-actions a,
.file-actions button {
    padding: 5px 10px;
    font-size: 12px;
    width: auto;
    margin: 0;
}

/* Calculation Results */
.calc-result {
    background: #e9ecef;
    padding: 15px;
    border-radius: 4px;
    margin: 10px 0;
}

/* File Info */
.file-info {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
}

.info-row {
    margin: 10px 0;
}

.info-label {
    font-weight: bold;
    color: #495057;
}

.info-value {
    color: #212529;
}

.download-btn {
    width: 100%;
    background: #28a745;
    color: white;
    padding: 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    margin: 10px 0;
}

.download-btn:hover {
    background-color: #218838;
}

.file-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin: 20px 0;
}

/* File List */
ul {
    list-style: none;
    padding: 0;
}

li {
    margin: 8px 0;
    background: #f8f9fa;
    padding: 10px;
    border-radius: 5px;
}

.file-link {
    float: right;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        margin: 20px;
        padding: 20px;
    }

    .file-details {
        grid-template-columns: 1fr;
    }

    .menu {
        flex-direction: column;
        gap: 10px;
    }

    .file-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}