header {
    background: rgba(0, 0, 0, 0.98);
    backdrop-filter: blur(15px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--gold), transparent);
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.3);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    height: 70px;
    max-width: 1600px;
    margin: 0 auto;
    position: relative;
}

.navbar-left {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 100%;
}

.navbar-left h1 {
    margin: 0;
    display: flex;
    align-items: center;
    height: 100%;
}

.name-menu {
    color: var(--gold);
    text-decoration: none;
    font-family: var(--font-elegant);
    font-weight: var(--font-light);
    font-size: 1.25rem;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    transition: var(--transition-normal);
    text-shadow: 0 2px 10px rgba(212, 175, 55, 0.3);
}

.name-menu:hover {
    color: var(--gold-light);
    text-shadow: 0 2px 20px rgba(212, 175, 55, 0.5);
}

.menu {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 28px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1003;
    position: relative;
}

.menu span {
    width: 100%;
    height: 3px;
    background: var(--gold);
    border-radius: 2px;
    transition: all 0.3s ease;
    box-shadow: 0 0 5px rgba(212, 175, 55, 0.3);
}

.menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

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

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

.navbar-left > ul {
    display: none;
}

.navbar-right {
    display: none;
    height: 100%;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(0, 0, 0, 0.98);
    backdrop-filter: blur(20px);
    z-index: 1002;
    transition: right 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    overflow-y: auto;
    box-shadow: -5px 0 30px rgba(0, 0, 0, 0.8);
    border-left: 1px solid rgba(212, 175, 55, 0.3);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu ul {
    list-style: none;
    padding: 80px 0 30px 0;
    margin: 0;
}

.mobile-menu ul li {
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

.mobile-menu ul li a {
    display: block;
    padding: 16px 24px;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    transition: all 0.3s ease;
    position: relative;
}

.mobile-menu ul li a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: width 0.3s ease;
    box-shadow: 0 0 8px rgba(212, 175, 55, 0.5);
}

.mobile-menu ul li a:hover,
.mobile-menu ul li a:active {
    color: var(--gold);
    background: rgba(212, 175, 55, 0.08);
    padding-left: 32px;
}

.mobile-menu ul li a:hover::before,
.mobile-menu ul li a:active::before {
    width: 4px;
}

.mobile-menu-user {
    padding: 16px 24px;
    color: var(--gold);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    letter-spacing: var(--tracking-wide);
    background: rgba(212, 175, 55, 0.1);
    border-top: 1px solid rgba(212, 175, 55, 0.3);
    border-bottom: 1px solid rgba(212, 175, 55, 0.3);
}

.mobile-menu .login-btn,
.mobile-menu .logout-btn {
    background: rgba(212, 175, 55, 0.15);
    color: var(--gold);
    font-weight: var(--font-semibold);
    margin: 8px 16px;
    border-radius: 8px;
    text-align: center;
}

.mobile-menu .login-btn:hover,
.mobile-menu .logout-btn:hover {
    background: rgba(212, 175, 55, 0.25);
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.navbar-left ul,
.navbar-right ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.navbar-left ul li a,
.navbar-right ul li a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.8);
    padding: 8px 12px;
    border-radius: 6px;
    font-family: var(--font-primary);
    font-weight: var(--font-normal);
    font-size: 0.8rem;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    transition: var(--transition-normal);
    position: relative;
    white-space: nowrap;
}

.navbar-left ul li a::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: width 0.3s ease;
    box-shadow: 0 0 8px rgba(212, 175, 55, 0.4);
}

.navbar-left ul li a:hover {
    color: var(--gold);
    background-color: rgba(212, 175, 55, 0.08);
}

.navbar-left ul li a:hover::after {
    width: 70%;
}

.navbar-user {
    color: var(--gold);
    background: rgba(212, 175, 55, 0.1);
    backdrop-filter: blur(10px);
    padding: 8px 14px;
    border-radius: 20px;
    font-family: var(--font-primary);
    font-weight: var(--font-semibold);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-wide);
    border: 1px solid rgba(212, 175, 55, 0.3);
    transition: var(--transition-normal);
    white-space: nowrap;
    display: flex;
    align-items: center;
    height: auto;
}

.navbar-user:hover {
    background: rgba(212, 175, 55, 0.15);
    border-color: var(--gold);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.2);
}

@media (min-width: 640px) {
    nav {
        padding: 0 16px;
        height: 80px;
    }

    .name-menu {
        font-size: 1.3rem;
        letter-spacing: var(--tracking-wide);
    }

    .menu {
        display: none !important;
    }

    .mobile-menu,
    .mobile-menu-overlay {
        display: none !important;
        visibility: hidden !important;
        pointer-events: none !important;
    }

    .navbar-left {
        width: auto;
    }

    .navbar-left > ul {
        display: flex;
        align-items: center;
        gap: 0;
        margin-left: 8px;
        height: 100%;
    }

    .navbar-left ul li a,
    .navbar-right ul li a {
        display: flex;
        align-items: center;
        height: 100%;
    }

    .navbar-right {
        display: flex;
        align-items: center;
        height: 100%;
    }

    .navbar-right ul {
        display: flex;
        align-items: center;
        gap: 8px;
        height: 100%;
    }

    .navbar-user {
        padding: 8px 16px;
        font-size: var(--text-sm);
    }
}

@media (min-width: 640px) and (max-width: 900px) {
    .name-menu {
        font-size: 0.95rem;
        letter-spacing: 0.015em;
    }

    .navbar-left > ul {
        gap: 0;
        margin-left: 6px;
    }

    .navbar-left ul li a {
        padding: 6px 6px;
        font-size: 0.65rem;
    }

    .navbar-user {
        padding: 6px 10px;
        font-size: 0.65rem;
    }
}

@media (min-width: 901px) and (max-width: 1023px) {
    .name-menu {
        font-size: 1.3rem;
    }

    .navbar-left > ul {
        gap: 1px;
        margin-left: 12px;
    }

    .navbar-left ul li a {
        padding: 8px 9px;
        font-size: 0.75rem;
    }

    .navbar-user {
        padding: 8px 14px;
        font-size: 0.75rem;
    }
}

@media (min-width: 1024px) {
    nav {
        padding: 0 40px;
    }

    .name-menu {
        font-size: 2.2rem;
        letter-spacing: var(--tracking-widest);
    }

    .navbar-left > ul {
        gap: 4px;
        margin-left: 32px;
    }

    .navbar-left ul li a {
        padding: 10px 14px;
        font-size: 0.9rem;
    }

    .navbar-user {
        padding: 10px 20px;
        font-size: var(--text-base);
    }
}