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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Login/Register Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    text-align: center;
    color: #333;
    margin-bottom: 10px;
}

.login-box h3 {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    display: inline-block;
    background: #667eea;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    text-decoration: none;
    transition: background 0.3s;
}

.btn:hover {
    background: #5a67d8;
}

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

.btn-secondary:hover {
    background: #5a6268;
}

.btn-small {
    padding: 8px 16px;
    font-size: 14px;
}

/* Alert Styles */
.alert {
    padding: 12px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert-error {
    background: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.alert-success {
    background: #efe;
    color: #393;
    border: 1px solid #cfc;
}

.alert-info {
    background: #eef;
    color: #339;
    border: 1px solid #ccf;
}

/* Navbar Styles */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-brand {
    font-size: 24px;
    font-weight: bold;
    color: #667eea;
}

.nav-menu {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-menu a {
    color: #555;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 5px;
    transition: background 0.3s;
}

.nav-menu a:hover {
    background: #f0f0f0;
}

.logout-btn {
    background: #dc3545;
    color: white !important;
}

.logout-btn:hover {
    background: #c82333 !important;
}

/* Dashboard Styles */
.dashboard-header {
    background: white;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.dashboard-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    margin-bottom: 10px;
    color: #333;
}

.card p {
    color: #666;
    margin-bottom: 20px;
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.result-item {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.result-image {
    height: 200px;
    overflow: hidden;
}

.result-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.result-item:hover .result-image img {
    transform: scale(1.05);
}

.result-details {
    padding: 20px;
}

.result-details h3 {
    margin-bottom: 10px;
    color: #333;
}

.result-details p {
    color: #666;
    margin-bottom: 8px;
    font-size: 14px;
}

/* Filter Box */
.filter-box {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.filter-row {
    display: flex;
    gap: 15px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.filter-row .form-group {
    flex: 1;
    min-width: 200px;
    margin-bottom: 0;
}

/* Upload Form */
.upload-form {
    background: white;
    padding: 30px;
    border-radius: 10px;
    max-width: 600px;
    margin: 0 auto;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 10px;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .filter-row {
        flex-direction: column;
    }
    
    .filter-row .form-group {
        width: 100%;
    }
    
    .upload-form {
        padding: 20px;
    }
}

.text-center {
    text-align: center;
    margin-top: 20px;
}