/*

Nav — use with scripts/navbar.js. Full markup: test-nav.html

<header id="toggleTheme" class="navbar" data-user="loading">
    <div class="left">...logo...</div>
    <div class="right">
        <nav id="nav_menu" class="navbar-menu">
            <ul class="navbar-links">
                <li><a class="navbar-link" href="/" aria-current="page">HOME</a></li>
                <li class="navbar-dropdown">
                    <button class="navbar-link navbar-dropdown-btn" type="button" aria-expanded="false">VISITS</button>
                    <ul class="navbar-dropdown-list">
                        <li><a class="navbar-item" href="/Visit/">Home</a></li>
                    </ul>
                </li>
            </ul>
        </nav>
        <div class="navbar-lang">...language button + #navbar_lang_menu (optional)...</div>
        <div class="navbar-user">...user button + #navbar_user_menu...</div>
        <button id="nav_btn" type="button">...</button>
    </div>
</header>

- data-user on the header: loading | guest | signed (set by navbar.js)
- Show by state : .loading-only / .guest-only / .signed-only
- Current page  : aria-current="page" on the link
- No menu links : leave .navbar-links empty; the menu button and panel are hidden

One breakpoint only: mobile <= 1420px < desktop

*/


.navbar {
    --navbar-text: var(--sidenavbarcolor);
    --navbar-gold: var(--gold-tone-3-color);
    --navbar-panel: var(--sidenavbarbgcolor);
    --navbar-hover: #00000015;
    --navbar-ice: var(--ice-color);
    --navbar-fire: var(--fire-color);
    --navbar-gradient: linear-gradient(90deg, var(--navbar-ice) 0%, var(--navbar-fire) 100%);
}

html[data-theme="dark"] .navbar {
    --navbar-hover: #ffffff10;
    --navbar-gold: var(--gold-tone-1-color);
    --navbar-ice: var(--primary-ice-color-300);
    --navbar-fire: var(--primary-fire-color-400);
}

.navbar .right {
    display: flex;
    align-items: center;
    gap: 10px;

    margin-left: auto;
    margin-right: 10px;
    padding: 10px;
}

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

/* Show by user state */

.navbar:not([data-user="loading"]) .loading-only,
.navbar:not([data-user="guest"]) .guest-only,
.navbar:not([data-user="signed"]) .signed-only {
    display: none !important;
}

/* ------------------------ Links: gold text, ice -> fire on hover ------------------------ */

.navbar .navbar-link,
.navbar .navbar-item,
.navbar .navbar-user-label,
.navbar .navbar-user-name,
.navbar .navbar-lang-code {
    background: var(--navbar-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: var(--navbar-text);

    transition: all 0.3s ease;
}

.navbar .navbar-link:hover,
.navbar .navbar-link[aria-current="page"],
.navbar .navbar-dropdown.open > .navbar-link,
.navbar .navbar-item:hover,
.navbar .navbar-item[aria-current="page"],
.navbar .navbar-item[aria-current="true"],
.navbar .navbar-user-btn:hover .navbar-user-label,
.navbar .navbar-lang-btn:hover .navbar-lang-code {
    -webkit-text-fill-color: transparent;
}

.navbar .navbar-link {
    display: block;
    position: relative;
    box-sizing: border-box;
    padding: 15px 25px;

    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: bold;
    line-height: 1;
    text-decoration: none;
    white-space: nowrap;
}

/* underline bar (desktop) / side bar (mobile) */
.navbar .navbar-link::before {
    content: '';
    position: absolute;
    background: var(--navbar-gradient);
    transition: transform 0.25s ease;
}

/* same size as the old nav drop-down items */
.navbar .navbar-item {
    display: block;
    padding: 18px;

    font-size: 1rem;
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
    text-transform: uppercase;
    white-space: nowrap;
}

.navbar .navbar-item:hover {
    background-color: var(--navbar-hover);
}

.navbar .navbar-link:focus-visible,
.navbar .navbar-item:focus-visible,
.navbar .navbar-user-btn:focus-visible,
.navbar .navbar-lang-btn:focus-visible,
.navbar #nav_btn:focus-visible {
    outline: 2px solid var(--navbar-gold);
    outline-offset: -2px;
}

/* Drop-down chevron: gold in both themes */

.navbar .navbar-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 8px;
}

.navbar .navbar-dropdown-btn::after {
    content: '';
    width: 7px;
    height: 7px;
    border-right: 2px solid var(--navbar-gold);
    border-bottom: 2px solid var(--navbar-gold);
    transform: rotate(45deg) translateY(-3px);
    transition: transform 0.25s ease;
}

.navbar .navbar-dropdown.open > .navbar-dropdown-btn::after {
    transform: rotate(-135deg) translateY(-3px);
}

/* Panels: same look as treeview / listview */

.navbar .navbar-dropdown-list,
.navbar .navbar-user-menu,
.navbar .navbar-lang-menu {
    background: var(--navbar-panel);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);

    border-top: 3px solid;
    border-image: var(--navbar-gradient) 1;
}

/* ------------------------ User ------------------------ */

.navbar .navbar-user {
    position: relative;
    display: flex;
}

.navbar .navbar-user-btn {
    display: flex;
    align-items: center;
    gap: 10px;

    padding: 4px;
    margin: 0;
    border: none;
    background: none;
    cursor: pointer;
}

.navbar .navbar-user-label {
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;

    font-size: 1.1rem;
    font-weight: bold;
    line-height: 1.2;
}

.navbar .navbar-avatar-wrap {
    flex: none;
    position: relative;
    display: block;
    width: 40px;
    height: 40px;
}

.navbar .navbar-avatar {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

/* green dot = signed in */
.navbar[data-user="signed"] .navbar-avatar-wrap::after {
    content: '';
    position: absolute;
    right: 0;
    bottom: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--mid-tone-color);
    box-shadow: 0 0 0 2px var(--normal);
}

.navbar[data-user="loading"] .navbar-avatar {
    animation: navbar-pulse 1s ease-in-out infinite alternate;
}

@keyframes navbar-pulse {
    from { opacity: 1; }
    to { opacity: 0.35; }
}

.navbar .navbar-user-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    z-index: 10;

    width: 280px;
    max-width: calc(100vw - 20px);

    display: none;
    animation: navbar-fadeIn 0.2s;
}

.navbar .navbar-user-menu.open {
    display: block;
}

.navbar .navbar-user-head {
    display: flex;
    align-items: center;
    gap: 12px;

    padding: 16px 18px;
    border-bottom: 1px solid var(--navbar-gold);
}

.navbar .navbar-user-head .navbar-avatar-wrap {
    width: 48px;
    height: 48px;
}

.navbar .navbar-user-info {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.navbar .navbar-user-name {
    font-size: 1.1rem;
    font-weight: bold;
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.navbar .navbar-user-sub {
    color: var(--navbar-text);
    font-size: 0.85rem;
    opacity: 0.75;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.navbar .navbar-user-links {
    padding: 6px 0;
}

@keyframes navbar-fadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ------------------------ Language ------------------------ */

.navbar .navbar-lang {
    position: relative;
    display: flex;
}

/* same height as the user button (40px avatar + 4px padding) */
.navbar .navbar-lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;

    box-sizing: border-box;
    height: 48px;
    padding: 4px 10px;
    margin: 0;
    border: none;
    background: none;
    cursor: pointer;
}

.navbar .navbar-lang-icon {
    flex: none;
    width: 24px;
    height: 24px;

    fill: none;
    stroke: var(--navbar-gold);
    stroke-width: 1.6;
}

.navbar .navbar-lang-code {
    font-size: 1.1rem;
    font-weight: bold;
    line-height: 1.2;
    text-transform: uppercase;
}

.navbar .navbar-lang-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    z-index: 10;

    min-width: 180px;
    padding: 6px 0;

    display: none;
    animation: navbar-fadeIn 0.2s;
}

.navbar .navbar-lang-menu.open {
    display: block;
}

/* .navbar-item is styled for <a>, reset the <button> look */
.navbar .navbar-lang-menu .navbar-item {
    width: 100%;
    border: none;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
}

/* ------------------------ Menu button ------------------------ */

/* pages without menu links: no menu button, no empty panel */
.navbar:not(:has(.navbar-links > li)) #nav_btn,
.navbar:not(:has(.navbar-links > li)) .navbar-menu {
    display: none !important;
}

.navbar #nav_btn {
    display: none;
    padding: 4px;
    margin: 0;
    border: none;
    background: none;
    cursor: pointer;
}

.navbar #nav_btn img {
    display: block;
    width: 30px;
    height: 30px;
}

/* ------------------------ Desktop ------------------------ */

@media (width > 1420px) {
    .navbar .navbar-links {
        display: flex;
        gap: 10px;
    }

    .navbar .navbar-links > li {
        position: relative;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    /* user + language: floating card like the menu items, lifts on hover, pressed while open */
    .navbar .navbar-user-btn {
        padding: 4px 18px 4px 4px;
    }

    .navbar .navbar-lang-btn {
        padding: 4px 14px;
    }

    .navbar .navbar-user-btn,
    .navbar .navbar-lang-btn {
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
        transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .navbar .navbar-user-btn:hover,
    .navbar .navbar-lang-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
    }

    .navbar .navbar-user-btn[aria-expanded="true"],
    .navbar .navbar-lang-btn[aria-expanded="true"] {
        transform: translateY(0);
        box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    }

    .navbar .navbar-link::before {
        left: 10%;
        right: 10%;
        bottom: 8px;
        height: 3px;
        transform: scaleX(0);
    }

    .navbar .navbar-link:hover::before,
    .navbar .navbar-link[aria-current="page"]::before {
        transform: scaleX(1);
    }

    .navbar .navbar-dropdown-list {
        position: absolute;
        top: 100%;
        right: 0;
        z-index: 10;
        min-width: 280px;
        padding: 8px 16px;

        display: none;
        flex-direction: column;
        gap: 6px;
        animation: navbar-fadeIn 0.2s;
    }

    .navbar .navbar-dropdown:hover > .navbar-dropdown-list,
    .navbar .navbar-dropdown.open > .navbar-dropdown-list {
        display: flex;
    }

    /* old nav look: no gradient strip, each item is its own card */
    .navbar .navbar-dropdown-list {
        border-top: none;
    }

    .navbar .navbar-dropdown-list > li {
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    .navbar .navbar-dropdown-list .navbar-item:hover {
        background-color: transparent;
    }
}

/* ------------------------ Mobile ------------------------ */

@media (width <= 1420px) {
    .navbar #nav_btn {
        display: block;
    }

    .navbar .navbar-user-label {
        display: none;
    }

    /*
        Panel hangs under the header and stops at the bottom of the screen:
        left/right 0 instead of 100vw (no scrollbar width overflow),
        100dvh - header instead of 200vh (no extra page height).
    */
    .navbar .navbar-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        height: calc(100vh - 100%);
        height: calc(100dvh - 100%);
        z-index: 10;

        box-sizing: border-box;
        padding: 10px 0;
        overflow-y: auto;
        overscroll-behavior: contain;

        background: var(--navbar-panel);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);

        visibility: hidden;
        opacity: 0;
        transform: translateX(-100%);
        transition:
            opacity 0.1s ease,
            transform 0.3s ease,
            visibility 0s linear 0.3s;
    }

    .navbar.menu-open .navbar-menu {
        visibility: visible;
        opacity: 1;
        transform: translateX(0);
        transition:
            opacity 0.1s ease,
            transform 0.3s ease;
    }

    .navbar .navbar-link {
        width: 100%;
        padding: 14px 24px;
        text-align: left;
    }

    .navbar .navbar-link:hover {
        background-color: var(--navbar-hover);
    }

    .navbar .navbar-link::before {
        left: 0;
        top: 0;
        bottom: 0;
        width: 3px;
        background: linear-gradient(180deg, var(--navbar-ice) 0%, var(--navbar-fire) 100%);
        transform: scaleY(0);
    }

    .navbar .navbar-link:hover::before,
    .navbar .navbar-link[aria-current="page"]::before {
        transform: scaleY(1);
    }

    .navbar .navbar-dropdown-list {
        margin-left: 24px;
        border-top: none;
        border-image: none;
        border-left: 1px solid var(--navbar-gold);
        box-shadow: none;
        background: none;

        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transition: max-height 0.35s ease, opacity 0.25s ease;
    }

    .navbar .navbar-dropdown.open > .navbar-dropdown-list {
        max-height: 500px;
        opacity: 1;
    }

    /* same size as the old mobile nav items */
    .navbar .navbar-dropdown-list .navbar-item {
        padding: 12px 24px;
        font-size: 1.1rem;
        font-weight: bold;
    }

    /* user menu hangs from the header's right edge */
    .navbar .navbar-user {
        position: static;
    }

    .navbar .navbar-user-menu {
        top: 100%;
        right: 10px;
    }
}