/**
 * HEADER COMPONENT
 * 
 * Styles for the navigation header and theme toggle
 */

/* Header Container */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--bg-color);
    box-shadow: 0 2px 10px var(--shadow-color);
    transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

/* Logo */
.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

/* Navigation menu */
.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-item {
    margin-left: var(--spacing-sm);
    position: relative;
}

.nav-link {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem;
    position: relative;
    text-decoration: none;
}

.nav-link::after {
    content: "";
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Dropdown menu */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.dropdown-toggle .fa-chevron-down {
    font-size: 0.8rem;
    transition: transform var(--transition-fast);
}

.dropdown.active .dropdown-toggle .fa-chevron-down {
    transform: rotate(180deg);
}

/* Desktop dropdown behavior */
@media screen and (min-width: 769px) {
    .dropdown:hover .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .dropdown:hover .dropdown-toggle .fa-chevron-down {
        transform: rotate(180deg);
    }
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-md);
    box-shadow: 0 5px 15px var(--shadow-color);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
    z-index: 100;
    list-style: none; /* Remove bullet points */
    margin: 0;
}

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

.dropdown-item {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--text-color);
    text-decoration: none;
    transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--bg-color-alt);
    color: var(--primary-color);
}

/* Mobile menu toggle */
.nav-toggle {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    position: relative;
    z-index: 1100;
}

.nav-toggle .bar {
    display: block;
    width: 30px;
    height: 3px;
    margin: 5px 0;
    background-color: var(--text-color);
    transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out;
    position: relative;
}

/* Creates a proper X with absolute positioning */
@media screen and (max-width: 768px) {
    .nav-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 30px;
        height: 30px;
        position: relative;
        margin-right: 1rem;
    }
    
    .nav-toggle .bar {
        position: absolute;
        transition: all 0.3s ease;
        width: 30px;
    }
    
    .nav-toggle .bar:nth-child(1) {
        transform: translateY(-8px);
    }
    
    .nav-toggle .bar:nth-child(3) {
        transform: translateY(8px);
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg);
    }
}

/* Theme toggle */
.theme-toggle {
    margin-left: var(--spacing-md);
    display: flex;
    align-items: center;
}

#themeToggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--border-radius-round);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    padding: 0;
    background-color: transparent;
}

#themeToggle:hover {
    background-color: var(--bg-color-alt);
}

/* Theme icon display */
#themeToggle .fa-moon,
#themeToggle .fa-sun {
    font-size: 1.5rem;
    transition: opacity var(--transition-fast);
}

#themeToggle .fa-moon {
    display: block;
    opacity: 1;
}

#themeToggle .fa-sun {
    display: none;
    opacity: 0;
}

body.dark-theme #themeToggle .fa-moon {
    display: none;
    opacity: 0;
}

body.dark-theme #themeToggle .fa-sun {
    display: block;
    opacity: 1;
}

/* Mobile specific styles */
@media screen and (max-width: 768px) {
    .navbar {
        padding: 0.75rem 0;
    }
    
    .logo {
        margin-left: 1rem;
    }
    
    .theme-toggle {
        margin-right: 1rem;
    }
    
    #themeToggle {
        width: 2.25rem;
        height: 2.25rem;
        background-color: var(--bg-color-alt);
    }
    
    #themeToggle .fa-moon,
    #themeToggle .fa-sun {
        font-size: 1.25rem;
    }

    /* Hamburger menu button */
    .nav-toggle {
        display: block;
        width: 26px;
        height: 26px;
        margin-right: 1rem;
        position: relative;
    }
    
    .nav-toggle .bar {
        position: absolute;
        left: 0;
        width: 26px;
        height: 2px;
        background-color: var(--text-color);
        transition: all 0.25s ease-in-out;
    }
    
    /* Set the three bars */
    .nav-toggle .bar:nth-child(1) {
        top: 4px;
    }
    
    .nav-toggle .bar:nth-child(2) {
        top: 6px;
    }
    
    .nav-toggle .bar:nth-child(3) {
        top: 8px;
    }
    
    /* Transform to X when active */
    .nav-toggle.active .bar:nth-child(1) {
        top: 6px;
        transform: rotate(45deg);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
        transform: translateX(-20px);
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        top: 6px;
        transform: rotate(-45deg);
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--bg-color);
        flex-direction: column;
        align-items: flex-start;
        padding: 2rem;
        transition: left var(--transition-normal);
        overflow-y: auto;
        margin: 0;
        z-index: 1000;
    }
    
    .nav-menu.active {
        left: 0;
        box-shadow: 0 5px 15px var(--shadow-color);
    }
    
    .nav-item {
        margin: 0.5rem 0;
        width: 100%;
    }
    
    .nav-link {
        width: 100%;
        display: block;
        padding: 0.75rem 0;
    }
    
    /* Mobile dropdown styles */
    .dropdown-toggle {
        display: flex;
        justify-content: space-between;
        width: 100%;
    }
    
    .dropdown-menu {
        position: static;
        width: 100%;
        box-shadow: none;
        padding-left: 1rem;
        max-height: 0;
        overflow: hidden;
        opacity: 1;
        visibility: visible;
        transform: none;
        transition: max-height var(--transition-normal);
        background-color: transparent;
        padding: 0 0 0 1rem; /* Adjust padding to align properly */
    }
    
    .dropdown.active .dropdown-menu {
        max-height: 200px;
        border-left: 2px solid var(--primary-color);
        margin-top: 0.5rem;
        margin-bottom: 0.5rem;
    }
    
    .dropdown-item {
        padding: 0.75rem 0.5rem;
    }
}