/* Shared index-style navigation shell for inner pages */

.minimal-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--theme-nav-bg, rgba(255, 255, 255, 0.8));
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    border-bottom: 1px solid var(--theme-border, rgba(0, 0, 0, 0.05));
}

.minimal-nav.scrolled,
.minimal-nav.navbar-scrolled {
    box-shadow: 0 2px 10px var(--theme-shadow, rgba(0, 0, 0, 0.12));
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.logo-link {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.nav-logo {
    height: 128px;
    margin: -32px 0;
    width: auto;
    filter: var(--theme-logo-filter, brightness(0));
    transition: filter 0.3s ease, transform 0.3s ease, opacity 0.3s ease;
}

.nav-logo:hover {
    filter: var(--theme-logo-filter, brightness(0));
    transform: scale(1.02);
    opacity: 0.9;
}

.nav-controls {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
    min-width: 0;
    flex: 1;
}

.nav-menu {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 0.9rem;
    margin: 0;
    padding: 0;
    white-space: nowrap;
}

.nav-menu a {
    color: var(--theme-text-primary, #1d1d1f);
    text-decoration: none;
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    transition: color 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--theme-accent-secondary, #4949e7);
}

body.theme-dark .nav-menu a.active {
    color: var(--theme-accent-primary, #d35b74);
}

.menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 0.28rem;
    width: 2.35rem;
    height: 2.35rem;
    border: 1px solid var(--theme-border, rgba(0, 0, 0, 0.08));
    border-radius: 999px;
    background: transparent;
    color: var(--theme-text-primary, #1d1d1f);
    cursor: pointer;
    transition: border-color 0.3s ease, background-color 0.3s ease, transform 0.2s ease;
}

.menu-toggle:hover {
    border-color: var(--theme-accent-secondary, #4949e7);
    transform: scale(1.04);
}

.menu-toggle:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(73, 73, 231, 0.15);
}

.menu-toggle-line {
    width: 1rem;
    height: 2px;
    border-radius: 99px;
    background: currentColor;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.minimal-nav.menu-open .menu-toggle-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

.minimal-nav.menu-open .menu-toggle-line:nth-child(2) {
    transform: translateY(-4px) rotate(-45deg);
}

@media (max-width: 900px) {
    .menu-toggle {
        display: inline-flex;
        position: relative;
        z-index: 1102;
    }

    .nav-container {
        z-index: 1102;
    }

    .nav-controls {
        flex: 0 0 auto;
        gap: 0.55rem;
    }

    .nav-controls .theme-switcher {
        margin-left: 0;
    }

    .nav-menu {
        position: fixed;
        inset: 0;
        z-index: 1100;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        gap: 0;
        margin: 0;
        padding: calc(5rem + env(safe-area-inset-top, 0px)) 1.5rem calc(2rem + env(safe-area-inset-bottom, 0px));
        min-height: 100dvh;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        overflow-y: auto;
        transform: translateY(-14px);
        white-space: normal;
        background: var(--theme-bg-primary, #ffffff);
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        transition: opacity 0.3s ease, transform 0.3s ease;
    }

    .minimal-nav.menu-open .nav-menu {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
        box-shadow: none;
    }

    .minimal-nav.menu-open {
        background: transparent;
        border-bottom-color: transparent;
        box-shadow: none;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .minimal-nav.menu-open .logo-link,
    .minimal-nav.menu-open .theme-switcher {
        opacity: 0;
        pointer-events: none;
    }

    .minimal-nav.menu-open .menu-toggle {
        z-index: 1103;
    }

    body.nav-open .minimal-nav .nav-menu {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }

    .nav-menu li {
        width: 100%;
        border-top: 1px solid var(--theme-border, rgba(0, 0, 0, 0.08));
    }

    .nav-menu li:first-child {
        border-top: none;
    }

    .nav-menu a {
        display: block;
        width: 100%;
        padding: 0.9rem 0;
        font-size: clamp(1.75rem, 8vw, 2.4rem);
        font-weight: 600;
        line-height: 1.12;
        letter-spacing: -0.03em;
    }

    body.nav-open {
        overflow: hidden;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0.4375rem 1.5rem;
    }
}

@media (max-width: 600px) {
    .nav-controls .theme-switcher {
        padding: 0.38rem 0.62rem;
    }

    .nav-controls .theme-switcher .switcher-text {
        display: none;
    }

    .nav-menu {
        padding: calc(4.6rem + env(safe-area-inset-top, 0px)) 1.2rem calc(1.4rem + env(safe-area-inset-bottom, 0px));
        min-height: 100dvh;
    }

    .nav-menu a {
        font-size: clamp(1.45rem, 9vw, 2rem);
        padding: 0.75rem 0;
    }

}