/* Header CSS - Navigation and Layout */

/* CSS variables are defined centrally in assets/css/style.css :root.
   This file relies on those variables. Do not redefine them here. */

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

.nav-container {
    max-width: 100vw;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 75px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-cyan);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo:hover {
    text-decoration: none;
    color: var(--dark-cyan);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.nav-menu a:hover,
.nav-menu a.active {
    background-color: rgba(0, 188, 212, 0.1);
    color: var(--primary-cyan);
    text-decoration: none;
}

.nav-menu a span {
    font-weight: 600;
}

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

}

.login-btn {
    background: linear-gradient(135deg, var(--primary-cyan), var(--dark-cyan));
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 0.9rem;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 188, 212, 0.4);
    text-decoration: none;
    color: var(--white);
}

/* Dropdown Navigation */
.dropdown-nav {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--primary-cyan);
    color: var(--white);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.dropdown-toggle:hover {
    background: var(--dark-cyan);
    text-decoration: none;
    color: var(--white);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    margin-top: 0.5rem;
}

.dropdown-nav:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    color: var(--text-dark);
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.9rem;
}

.dropdown-menu a:last-child {
    border-bottom: none;
}

.dropdown-menu a:hover {
    background-color: rgba(0, 188, 212, 0.1);
    color: var(--primary-cyan);
    text-decoration: none;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: 0.3s;
    border-radius: 2px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 75px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 75px);
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        padding: 2rem 0;
        gap: 0;
        transition: left 0.3s ease;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu a {
        padding: 1rem 2rem;
        border-radius: 0;
        justify-content: flex-start;
        width: 100%;
        border-bottom: 1px solid #f1f5f9;
    }
    
    .nav-menu a:last-child {
        border-bottom: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .nav-auth {
        gap: 0.5rem;
    }
    
    .login-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .dropdown-toggle {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .dropdown-menu {
        position: fixed;
        top: 75px;
        right: 1rem;
        left: auto;
        min-width: 180px;
    }
}

@media (max-width: 480px) {
    .nav-container {
        height: 65px;
        padding: 0 0.75rem;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .nav-menu {
        top: 65px;
        height: calc(100vh - 65px);
    }
    
    .nav-auth {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .login-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.75rem;
    }
    
    .dropdown-toggle {
        padding: 0.4rem 0.6rem;
        font-size: 0.75rem;
    }
}