/* Navbar — solid navy bar, condensed wordmark, angled Join button */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: rgba(12, 30, 58, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--navy-line);
}

.navbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

/* Navbar Logo */
.navbar-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    text-decoration: none;
}

.navbar-logo img {
    width: 42px;
    height: 42px;
}

.navbar-logo span {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: #ffffff;
}

.navbar-logo-accent {
    color: var(--blue-hi) !important;
}

/* Navbar Links */
.navbar-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--mist);
    transition: color 0.2s;
}

.nav-link:hover {
    color: #ffffff;
}

.navbar-join-btn {
    padding: 0.5rem 1.2rem;
    font-size: 0.9rem;
    clip-path: none;
    border-radius: 3px;
}

/* Theme toggle */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    background: none;
    border: none;
    color: var(--mist);
    cursor: pointer;
    transition: color 0.2s;
}

.theme-toggle:hover {
    color: #ffffff;
}

.theme-toggle svg {
    display: block;
}

.theme-toggle .icon-moon {
    display: none;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .theme-toggle .icon-sun {
        display: none;
    }

    :root:not([data-theme]) .theme-toggle .icon-moon {
        display: block;
    }
}

:root[data-theme="dark"] .theme-toggle .icon-sun {
    display: none;
}

:root[data-theme="dark"] .theme-toggle .icon-moon {
    display: block;
}

/* Hamburger Menu */
.hamburger-menu {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    gap: 0.4rem;
}

.hamburger-menu span {
    width: 24px;
    height: 2.5px;
    background-color: #ffffff;
    border-radius: 2px;
    transition: all 0.3s ease;
}

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

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

.hamburger-menu.active span:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
}

/* Mobile Menu */
@media (max-width: 768px) {
    nav {
        max-width: 100vw;
    }

    .hamburger-menu {
        display: flex;
    }

    .navbar-links {
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(12, 30, 58, 0.97);
        flex-direction: column;
        align-items: center;
        gap: 0;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        border-bottom: 1px solid var(--navy-line);
        max-width: 100vw;
    }

    .navbar-links.active {
        max-height: 400px;
        padding: 1rem;
    }

    .navbar-links a {
        padding: 0.75rem 1rem;
        display: block;
        text-decoration: none;
    }

    .navbar-join-btn {
        text-align: center;
    }

    .navbar-links .theme-toggle {
        margin: 0.5rem 0;
    }

    .navbar-logo span {
        font-size: 1.05rem;
    }

    .navbar-inner {
        width: 100vw;
        padding: 10px;
        margin: 0;
    }
}