/* ============================================================
   9569 SILVER KNIGHTS — navigation
   (depends on css/theme.css design tokens)
   ============================================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    min-height: var(--nav-h);
    padding: 0.6rem var(--gutter);
    background: rgba(7, 11, 20, 0.5);
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
    border-bottom: 1px solid transparent;
    transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease),
        box-shadow 0.3s var(--ease);
}

/* thin energized seam under the bar once scrolled */
.navbar.scrolled {
    background: rgba(7, 11, 20, 0.88);
    border-bottom-color: var(--line);
    box-shadow: 0 10px 34px rgba(0, 0, 0, 0.5);
}

.navbar.scrolled::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyan) 35%, var(--cyan) 65%, transparent);
    opacity: 0.6;
}

.nav-container {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    transition: opacity 0.25s var(--ease);
}

.logo-section:hover {
    opacity: 0.85;
}

.logo {
    height: 42px;
    width: auto;
    filter: drop-shadow(0 0 10px var(--accent-glow));
}

.team-name {
    height: 25px;
    width: auto;
}

/* ---------------- Links ---------------- */

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.1rem;
}

.nav-links a:not(.sponsor-btn),
.dropdown-btn {
    position: relative;
    font-family: var(--font-mono);
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    padding: 0.6rem 0.9rem;
    line-height: 1;
    background: none;
    border: 0;
    cursor: pointer;
    transition: color 0.2s var(--ease);
}

/* HUD tick that grows under the active/hovered item */
.nav-links a:not(.sponsor-btn)::after,
.dropdown-btn::after {
    content: '';
    position: absolute;
    left: 0.9rem;
    right: 0.9rem;
    bottom: 0.25rem;
    height: 2px;
    background: var(--cyan);
    box-shadow: 0 0 10px var(--accent-glow);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s var(--ease);
}

.nav-links a:not(.sponsor-btn):hover,
.dropdown-btn:hover,
.dropdown-btn[aria-expanded="true"] {
    color: var(--ink);
}

.nav-links a:not(.sponsor-btn):hover::after,
.dropdown-btn:hover::after,
.dropdown-btn[aria-expanded="true"]::after {
    transform: scaleX(1);
}

.nav-links a.active:not(.sponsor-btn) {
    color: var(--cyan);
}

.nav-links a.active:not(.sponsor-btn)::after {
    transform: scaleX(1);
}

/* ---------------- Dropdown ---------------- */

.dropdown {
    position: relative;
}

.dropdown-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.arrow {
    display: inline-block;
    font-size: 0.8em;
    transition: transform 0.3s var(--ease);
}

.arrow.active {
    transform: rotate(180deg);
}

.dropdown-content {
    --c: 9px;
    position: absolute;
    isolation: isolate;
    z-index: 2147483647;
    top: calc(100% + 0.9rem);
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    min-width: 216px;
    background: var(--line-strong);
    filter: drop-shadow(0 18px 40px rgba(0, 0, 0, 0.55));
    clip-path: polygon(var(--c) 0, 100% 0, 100% calc(100% - var(--c)),
            calc(100% - var(--c)) 100%, 0 100%, 0 var(--c));
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
    padding: 0.4rem;
}

.dropdown-content::before {
    content: '';
    position: absolute;
    inset: 1px;
    z-index: -1;
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px),
            calc(100% - 8px) 100%, 0 100%, 0 8px);
    background: #0b1322;
}

.dropdown-content.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-content a {
    font-family: var(--font-mono);
    padding: 0.8rem 1rem;
    font-weight: 600;
    font-size: 0.76rem;
    letter-spacing: 0.08em;
    display: block;
    text-align: left;
    color: var(--muted);
    border-left: 2px solid transparent;
    transition: background-color 0.22s var(--ease), color 0.22s var(--ease),
        border-color 0.22s var(--ease);
}

.dropdown-content a:hover {
    background: var(--surface-2);
    color: var(--cyan);
    border-left-color: var(--cyan);
}

/* ---------------- Sponsor button (machined plate) ---------------- */

.sponsor-btn {
    --c: 9px;
    font-family: var(--font-mono);
    background: linear-gradient(135deg, var(--cyan), var(--blue-deep));
    color: #051320;
    padding: 0.78rem 1.4rem;
    margin-left: 0.7rem;
    border: none;
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    line-height: 1;
    white-space: nowrap;
    clip-path: polygon(var(--c) 0, 100% 0, 100% calc(100% - var(--c)),
            calc(100% - var(--c)) 100%, 0 100%, 0 var(--c));
    box-shadow: 0 0 0 1px rgba(92, 208, 236, 0.5);
    transition: transform 0.25s var(--ease), filter 0.25s var(--ease);
}

.sponsor-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.08) drop-shadow(0 0 14px var(--accent-glow));
}

/* ---------------- Hamburger ---------------- */

.hamburger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    width: 30px;
    height: 22px;
    position: relative;
    padding: 0;
    z-index: 1002;
}

.hamburger span {
    display: block;
    position: absolute;
    height: 2px;
    width: 100%;
    background: var(--ink);
    left: 0;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), top 0.3s var(--ease),
        background-color 0.3s var(--ease);
}

.hamburger span:nth-child(1) {
    top: 0;
}

.hamburger span:nth-child(2) {
    top: 9px;
}

.hamburger span:nth-child(3) {
    top: 18px;
}

.hamburger.active span {
    background: var(--cyan);
}

.hamburger.active span:nth-child(1) {
    top: 9px;
    transform: rotate(135deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.hamburger.active span:nth-child(3) {
    top: 9px;
    transform: rotate(-135deg);
}

/* ---------------- Mobile menu backdrop ---------------- */

.nav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(4, 6, 12, 0.62);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s var(--ease), visibility 0.35s;
    z-index: 998;
}

.nav-backdrop.show {
    opacity: 1;
    visibility: visible;
}

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

@media (max-width: 950px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: min(80vw, 330px);
        height: 100dvh;
        flex-direction: column;
        align-items: stretch;
        gap: 0.3rem;
        padding: calc(var(--nav-h) + 1.5rem) 1.6rem 2.5rem;
        background: var(--panel-strong);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-left: 1px solid var(--line-strong);
        box-shadow: -24px 0 70px rgba(0, 0, 0, 0.6);
        overflow-y: auto;
        transition: right 0.4s var(--ease-out);
        z-index: 999;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a:not(.sponsor-btn) {
        width: 100%;
        font-size: 0.85rem;
        padding: 0.95rem 0.85rem;
        border-left: 2px solid transparent;
        transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease),
            color 0.25s var(--ease);
    }

    .nav-links a:not(.sponsor-btn)::after {
        display: none;
    }

    .nav-links a.active:not(.sponsor-btn),
    .nav-links a:not(.sponsor-btn):hover {
        background: var(--surface-2);
        border-left-color: var(--cyan);
        color: var(--cyan);
    }

    .dropdown {
        width: 100%;
    }

    .dropdown-btn {
        width: 100%;
        justify-content: space-between;
        padding: 0.95rem 0.85rem;
        font-size: 0.85rem;
    }

    .dropdown-btn::after {
        display: none;
    }

    .dropdown-content {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        min-width: 0;
        width: 100%;
        clip-path: none;
        background: rgba(0, 0, 0, 0.25);
        filter: none;
        max-height: 0;
        padding: 0;
        overflow: hidden;
        transition: max-height 0.3s var(--ease), padding 0.3s var(--ease);
    }

    .dropdown-content::before {
        display: none;
    }

    .dropdown-content.active {
        max-height: 220px;
        padding: 0.3rem;
        transform: none;
    }

    .sponsor-btn {
        width: 100%;
        margin: 0.75rem 0 0;
        padding: 1rem;
        text-align: center;
    }
}