:root {
    --primary: #2563eb;
    --dark: #0f172a;
    --glass: rgba(15, 23, 42, 0.9);
    --text-light: #f8fafc;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header {
    background: var(--dark);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    position: relative;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.logo img {
    height: 40px;
    width: auto;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

nav {
    display: flex;
    align-items: center;
    gap: 25px;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: 0.3s;
}

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

.auth-links {
    display: flex;
    gap: 15px;
    margin-left: 20px;
}

.auth-links a {
    padding: 8px 18px;
    border-radius: 6px;
    font-weight: 600;
}

.auth-links a:first-child {
    border: 1px solid var(--primary);
}

.auth-links a:last-child {
    background: var(--primary);
}

.menu-toggle {
    display: none;
    font-size: 28px;
    cursor: pointer;
}

.mobile-top {
    display: none;
}

.brand {
    font-weight: 800;
    font-size: 1.2rem;
}

@media (max-width: 992px) {
    .menu-toggle {
        display: block;
    }

    nav {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 300px;
        background: var(--glass);
        backdrop-filter: blur(10px);
        flex-direction: column;
        align-items: flex-start;
        padding: 30px;
        transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    }

    nav.active {
        right: 0;
    }

    .mobile-top {
        display: flex;
        width: 100%;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 40px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        padding-bottom: 15px;
    }

    .close-btn {
        font-size: 24px;
        cursor: pointer;
    }

    .auth-links {
        flex-direction: column;
        width: 100%;
        margin-left: 0;
        margin-top: 20px;
        gap: 10px;
    }

    .auth-links a {
        text-align: center;
    }
}