:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --light-bg: #f8f9fa;
    --dark-bg: #212529;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    line-height: 1.6;
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.8em;
    font-weight: 700;
    color: white !important;
    display: flex;
    align-items: center;
}

.navbar-brand i {
    margin-right: 10px;
    color: var(--success-color);
}

.navbar-nav .nav-link {
    color: rgba(255,255,255,0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s;
    margin: 0 0.2rem;
}

.navbar-nav .nav-link:hover {
    color: white !important;
    background: rgba(255,255,255,0.1);
    border-radius: 5px;
}

.navbar-nav .nav-link.active {
    color: white !important;
    background: rgba(255,255,255,0.2);
    border-radius: 5px;
}

.btn-auth {
    background: white;
    color: var(--primary-color);
    border: 2px solid white;
    padding: 0.5rem 1.5rem;
    font-weight: 600;
    border-radius: 25px;
    transition: all 0.3s;
}

.btn-auth:hover {
    background: transparent;
    color: white;
}

.user-menu {
    display: flex;
    align-items: center;
    color: white;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--success-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    margin-right: 10px;
}

/* Footer */
.footer {
    background: var(--dark-bg);
    color: rgba(255,255,255,0.8);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer h5 {
    color: white;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.footer a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.footer a:hover {
    color: var(--secondary-color);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    margin-right: 10px;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--secondary-color);
    color: white;
}

.copyright {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    margin-top: 2rem;
    text-align: center;
}

/* Utility Classes */
.section-padding {
    padding: 4rem 0;
}