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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #ff6b35 0%, #ff8c42 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, #ff6b35 0%, #ff8c42 100%);
    color: white;
    padding: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 2em;
    font-weight: 600;
}

.header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.content {
    padding: 30px;
}

/* Search Section */
.search-section {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.search-form {
    width: 100%;
}

.search-box {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 250px;
    padding: 12px 20px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.search-input:focus {
    outline: none;
    border-color: #ff6b35;
}

.search-btn {
    white-space: nowrap;
}

.upload-section {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.upload-section h2,
.files-section h2 {
    margin-bottom: 20px;
    color: #333;
    font-size: 1.5em;
}

.upload-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: #555;
}

.form-group input[type="file"],
.form-group input[type="text"],
.form-group input[type="password"],
.form-group textarea {
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ff6b35;
}

.form-group small {
    color: #666;
    font-size: 12px;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #ff6b35 0%, #ff8c42 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
}

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.files-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.file-card {
    background: white;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 20px;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.file-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border-color: #ff6b35;
}

.file-icon {
    font-size: 3em;
    text-align: center;
}

.file-info {
    flex: 1;
}

.file-info h3 {
    font-size: 1.1em;
    margin-bottom: 10px;
    color: #333;
    word-break: break-word;
}

.file-description {
    color: #666;
    font-size: 0.9em;
    margin-bottom: 10px;
    line-height: 1.5;
}

.file-meta {
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 0.85em;
    color: #888;
}

.file-meta span {
    display: block;
}

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

.file-actions .btn {
    flex: 1;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-message {
    font-size: 1.2em;
    color: #888;
}

.footer {
    background: #f8f9fa;
    padding: 20px;
    text-align: center;
    color: #666;
    border-top: 1px solid #e9ecef;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #ff6b35 0%, #ff8c42 100%);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.login-info {
    margin-top: 15px;
    text-align: center;
    font-size: 0.85em;
    color: #888;
}

/* Settings Page */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.settings-section {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    border: 2px solid #e9ecef;
}

.settings-section h2 {
    margin-bottom: 20px;
    color: #333;
    font-size: 1.5em;
    border-bottom: 2px solid #ff6b35;
    padding-bottom: 10px;
}

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 20px;
}

.info-box {
    background: white;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #ff6b35;
    margin-bottom: 20px;
}

.info-box p {
    margin: 5px 0;
}

.info-text {
    color: #666;
    font-size: 0.9em;
    margin-bottom: 20px;
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .header-actions {
        flex-direction: column;
        width: 100%;
    }

    .header-actions .btn {
        width: 100%;
    }

    .files-grid {
        grid-template-columns: 1fr;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }

    .content {
        padding: 20px;
    }
}