/* ===========================
   NAVBAR (RIGHT OF TITLE BAR)
   =========================== */
:root {
    --nav-bg: rgba(12, 12, 16, .85);
    --nav-text: #e9f0ff;
    --nav-accent: #7ef6a1;
    --nav-border: rgba(255, 255, 255, .08);

    /* CHIP COLORS */
    --chip-bg: #1b1b2f;
    --chip-hover: #ff5b3d;
    --chip-active: #ff3e1c;
}

/* Sticky top bar */
.title-bar {
    position: sticky;
    top: 0;
    z-index: 1000;
}

.title-bar .tb-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
}

/* HAMBURGER BUTTON – force visible bars */
.tb-nav-toggle {
    display: none;
    /* stays hidden on desktop, shown in media query */
    width: 40px;
    height: 34px;
    padding: 4px 6px;
    border-radius: 10px;
    border: 1px solid var(--nav-border);
    background: var(--chip-bg);
    /* same pill color as other chips */
    cursor: pointer;
    display: none;
}

/* make sure global button styles don't kill the bars */
.tb-nav-toggle .bar {
    display: block;
    width: 100%;
    height: 2px;
    margin: 5px 0;
    background: #cfe3ff;
    /* line color (light cyan) */
    border-radius: 999px;
}

/* show hamburger on mobile only */
@media (max-width: 900px) {
    .tb-nav-toggle {
        display: inline-flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
}

/* Menu chips */
.tb-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tb-menu a,
.submenu-toggle {
    background: var(--chip-bg);
    color: #cfe3ff;
    border: 1px solid var(--nav-border);
    border-radius: 10px;
    padding: 7px 12px;
    font-size: 14px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    transition: background .25s, color .25s, transform .15s, box-shadow .25s;
    cursor: pointer;
}

/* Hover */
.tb-menu a:hover,
.submenu-toggle:hover {
    background: var(--chip-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(255, 91, 61, .35),
        0 0 10px rgba(255, 91, 61, .25) inset;
}

/* Click */
.tb-menu a:active,
.submenu-toggle:active {
    background: var(--chip-active);
    transform: scale(.98);
    box-shadow: 0 3px 10px rgba(255, 91, 61, .45) inset;
}

/* ACTIVE PAGE (fixed!) */
.tb-menu a.is-active,
.submenu-toggle.is-active {
    background: var(--chip-active);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 6px 16px rgba(255, 91, 61, .35),
        0 0 12px rgba(255, 91, 61, .25) inset;
}


/* Dropdown */
.has-submenu {
    position: relative;
}

.submenu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 220px;
    padding: 8px;
    margin: 0;
    background: #0f1320;
    border: 1px solid var(--nav-border);
    border-radius: 12px;
    list-style: none;
    display: none;
    box-shadow: 0 12px 30px rgba(0, 0, 0, .45);
}

.submenu li a {
    display: block;
    padding: 10px 12px;
    border-radius: 8px;
    color: #e9f0ff;
    transition: .25s;
}

.submenu li a:hover {
    background: #161b2b;
    color: var(--nav-accent);
}

/* Show dropdown on hover */
.has-submenu:hover>.submenu,
.has-submenu:focus-within>.submenu {
    display: block;
}


/* ===========================
   MOBILE (≤900px)
   =========================== */
@media (max-width: 900px) {

    .tb-nav-toggle {
        display: block;
    }

    .tb-menu {
        position: fixed;
        z-index: 2000;
        top: calc(56px + env(safe-area-inset-top));
        right: 8px;
        left: 8px;
        display: grid;
        gap: 8px;
        padding: 12px;
        background: #0b0f17;
        border: 1px solid var(--nav-border);
        border-radius: 14px;
        box-shadow: 0 18px 40px rgba(0, 0, 0, .45);
        max-height: calc(100vh - 72px - env(safe-area-inset-top));
        overflow: auto;

        transform: translateY(-12px);
        opacity: 0;
        pointer-events: none;
        transition: transform .25s ease, opacity .25s ease;
    }

    .tb-menu.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .tb-menu a,
    .submenu-toggle {
        padding: 12px 14px;
        font-size: 15px;
        border-radius: 12px;
    }

    /* Accordion dropdown */
    .has-submenu .submenu {
        position: static;
        display: none;
        padding: 6px;
        margin: 2px 0 0 0;
        background: #0f1320;
        border: 1px solid var(--nav-border);
        border-radius: 10px;
    }

    .has-submenu .submenu.open {
        display: block;
    }

    .submenu-toggle[aria-expanded="true"] i {
        transform: rotate(180deg);
        transition: .2s ease;
    }
}


/* Fix font inheritance */
:where(button, input, select, textarea) {
    font: inherit;
}

/* Ensure correct font */
.submenu-toggle {
    font-family: "JetBrains Mono", ui-monospace, monospace;
}