/* ============================================
   Header Component Styles
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-fixed);
    padding: var(--spacing-md) 0;
    transition: background-color var(--transition-normal), backdrop-filter var(--transition-normal), transform var(--transition-normal);
    background-color: transparent;
    transform: translateY(0);
}

.header.header-hidden {
    transform: translateY(-100%);
}

.header.scrolled {
    background-color: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo */
.header-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    z-index: var(--z-fixed);
    flex-shrink: 0;
    cursor: pointer;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
    text-decoration: none;
    color: inherit;
}

.header-logo:hover {
    transform: scale(1.05);
    opacity: 0.9;
    text-decoration: none;
}

.header-logo:active {
    transform: scale(0.98);
}

.header-logo:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

.enigma-logo-img {
    height: 80px;
    width: auto;
    max-width: 250px;
    object-fit: contain;
    background: transparent;
    display: block;
    flex-shrink: 0;
}

.header-logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    display: inline-block;
    white-space: nowrap;
    line-height: 1;
    margin: 0;
}

/* Navigation */
.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-menu a {
    color: var(--color-text-primary);
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 1rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-normal);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 80%;
}

.nav-menu a:hover {
    color: var(--color-primary);
}

/* Register Button */
.btn-register {
    background-color: var(--color-primary);
    color: var(--color-bg);
    padding: var(--spacing-xs) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-register:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 20px rgba(0, 255, 255, 0.4);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: var(--z-fixed);
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-text-primary);
    transition: all var(--transition-normal);
    border-radius: var(--radius-sm);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--color-bg);
    z-index: var(--z-modal);
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.mobile-menu-overlay.active {
    display: flex;
    opacity: 1;
}

.mobile-menu {
    list-style: none;
    text-align: center;
}

.mobile-menu li {
    margin-bottom: var(--spacing-md);
    animation: slideInRight 0.3s ease forwards;
    opacity: 0;
}

.mobile-menu li:nth-child(1) { animation-delay: 0.1s; }
.mobile-menu li:nth-child(2) { animation-delay: 0.2s; }
.mobile-menu li:nth-child(3) { animation-delay: 0.3s; }
.mobile-menu li:nth-child(4) { animation-delay: 0.4s; }
.mobile-menu li:nth-child(5) { animation-delay: 0.5s; }
.mobile-menu li:nth-child(6) { animation-delay: 0.6s; }

.mobile-menu a {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary);
    display: block;
    padding: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.mobile-menu a:hover {
    color: var(--color-primary);
}

.mobile-menu-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 2rem;
    cursor: pointer;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color var(--transition-fast);
}

.mobile-menu-close:hover {
    background-color: var(--color-surface);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu,
    .btn-register {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .header-logo {
        gap: var(--spacing-xs);
    }

    .enigma-logo-img {
        height: 60px;
        max-width: 180px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: var(--spacing-sm) 0;
    }

    .header-container {
        padding: 0 var(--spacing-sm);
    }

    .enigma-logo-img {
        height: 45px;
        max-width: 130px;
    }

    .mobile-menu a {
        font-size: 1.5rem;
    }
}