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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem 0;
    margin-bottom: 2rem;
}

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

.nav-brand h1 {
    font-size: 1.5rem;
    color: #4CAF50;
    margin: 0;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    transition: opacity 0.3s;
}

.logo-link:hover {
    opacity: 0.8;
}

.logo-image {
    height: 45px;
    width: 45px;
    display: block;
    object-fit: contain;
}

@media (max-width: 768px) {
    .logo-image {
        height: 35px;
        width: 35px;
    }
    
    .brand-text {
        font-size: 1.2rem;
    }
}

.brand-text {
    font-size: 1.3rem;
    font-weight: bold;
    color: #4CAF50;
    margin: 0;
}

.nav-menu {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-user {
    color: #666;
    font-size: 0.9rem;
}

.nav-link {
    color: #333;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background 0.3s;
}

.nav-link:hover {
    background: #f0f0f0;
}

/* Messages */
.messages {
    margin-bottom: 1rem;
}

.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

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

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

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Auth Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
}

.auth-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 800px;
}

.auth-card h2 {
    margin-bottom: 1.5rem;
    color: #333;
    text-align: center;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #555;
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #4CAF50;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    text-decoration: none;
    transition: background 0.3s;
}

.btn-primary {
    background: #4CAF50;
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background: #45a049;
}

.auth-link {
    text-align: center;
    margin-top: 1rem;
    color: #666;
}

.auth-link a {
    color: #4CAF50;
    text-decoration: none;
}

.auth-link a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .stats-bar {
        grid-template-columns: 1fr;
    }
}