/**
 * JKUAT Innovation Club - Global Navbar Styles
 * Matches the home page navbar look exactly.
 *
 * FIXES APPLIED:
 * - Dropdown double‑hide removed: uses opacity/visibility/transform only (no max‑height conflict)
 * - Overlay z‑index raised so click‑outside‑to‑close works; pointer‑events added
 * - body.drawer‑open scroll lock rule added
 * - CSS variables introduced for all repeated rgba values
 * - !important kept only on #global-navbar shell and .nav-links-container because
 *   global-navbar.js injects them after page stylesheets load
 * - -webkit‑backdrop‑filter added consistently everywhere backdrop‑filter is used
 * - Hamburger triple‑hide collapsed to single display:none
 * - Firefox scrollbar styles added alongside WebKit
 * - 100vh fallback added before 100dvh
 * - .desktop‑only gets aria guidance comment
 */

/* ==============================================
   Local Design Tokens
   (mirrors :root in home.css — update both together)
   ============================================== */
:root {
    /* Glass surfaces */
    --nb-glass-bg:          rgba(255, 255, 255, 0.08);
    --nb-glass-bg-hover:    rgba(255, 255, 255, 0.15);
    --nb-glass-bg-strong:   rgba(255, 255, 255, 0.10);
    --nb-glass-border:      rgba(255, 255, 255, 0.15);
    --nb-glass-border-soft: rgba(255, 255, 255, 0.10);
    --nb-glass-border-faint:rgba(255, 255, 255, 0.05);
    --nb-blur:              blur(25px);
    --nb-blur-strong:       blur(30px);
    --nb-blur-light:        blur(10px);

    /* Drawer */
    --nb-drawer-bg:         rgba(10, 15, 30, 0.85);
    --nb-drawer-width:      min(300px, 85vw);
    --nb-overlay-bg:        rgba(0, 0, 0, 0.50);

    /* Dropdown */
    --nb-dropdown-bg:       rgba(0, 0, 0, 0.90);

    /* Accent */
    --nb-blue:              rgba(59, 130, 246, 0.20);
    --nb-blue-border:       rgba(59, 130, 246, 0.30);
    --nb-blue-border-strong:rgba(59, 130, 246, 0.40);
    --nb-blue-text:         #60a5fa;

    /* Shadows */
    --nb-shadow:            0 4px 20px rgba(0, 0, 0, 0.10);
    --nb-shadow-strong:     0 8px 25px rgba(0, 0, 0, 0.30);
    --nb-shadow-drawer:     -8px 0 30px rgba(0, 0, 0, 0.40);

    /* Motion */
    --nb-transition:        all 0.3s ease;
    --nb-drawer-ease:       0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==============================================
   Scroll lock — applied by JS when drawer opens
   ============================================== */
body.drawer-open {
    overflow: hidden;
}

/* ==============================================
   NAVBAR SHELL
   ============================================== */
#global-navbar {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 1100 !important;
    background: var(--nb-glass-bg) !important;
    backdrop-filter: var(--nb-blur) !important;
    -webkit-backdrop-filter: var(--nb-blur) !important;
    border-bottom: 1px solid var(--nb-glass-border) !important;
    padding: 0.75rem 0 !important;
    width: 100% !important;
    box-shadow: var(--nb-shadow) !important;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    margin: 0 !important;
}

/* Inner container — static, never fixed */
.global-navbar-container {
    position: static;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    box-shadow: none;
    width: 100%;
    padding: 0;
    margin: 0;
}

.global-navbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    position: relative;
}

/* ==============================================
   Club title row
   ============================================== */
.nav-club-header {
    text-align: center;
    width: 100%;
    margin-bottom: 0;
}

.nav-club-title {
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.30);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

/* ==============================================
   Nav links row
   ============================================== */
.nav-links-container {
    display: flex !important;
    flex-direction: row !important;
    justify-content: space-between !important;
    align-items: center !important;
    width: 100% !important;
    gap: 1rem !important;
}

.nav-center {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    flex: 1;
}

.nav-auth {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-shrink: 0;
}

/* ==============================================
   Glass buttons (nav links)
   ============================================== */
.glass-button {
    background: var(--nb-glass-bg-strong);
    border: 1px solid var(--nb-glass-border);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.75rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--nb-transition);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    backdrop-filter: var(--nb-blur-light);
    -webkit-backdrop-filter: var(--nb-blur-light);
    font-family: inherit;
    margin: 0;
    line-height: 1.4;
}

.glass-button:hover {
    background: var(--nb-glass-bg-hover);
    transform: translateY(-1px);
    color: white;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.20);
}

.glass-button.active {
    background: var(--nb-blue);
    border-color: var(--nb-blue-border);
    color: var(--nb-blue-text);
}

#global-navbar a {
    text-decoration: none;
}

/* ==============================================
   Dropdown (desktop "More" menu)
   ============================================== */
.nav-dropdown {
    position: relative;
    display: inline-block;
}

/* .desktop-only hides an element visually AND from assistive tech. Pair with
   aria-hidden="true" in JS so screen readers skip it on mobile. */
.desktop-only {
    display: block;
}

.dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.dropdown-arrow {
    font-size: 0.75rem;
    transition: transform 0.3s ease;
    margin-left: 0.25rem;
}

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

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 220px;
    background: var(--nb-dropdown-bg);
    backdrop-filter: var(--nb-blur);
    -webkit-backdrop-filter: var(--nb-blur);
    border: 1px solid var(--nb-glass-border);
    border-radius: 8px;
    box-shadow: var(--nb-shadow-strong);

    /* Single-mechanism hide: opacity + visibility + transform */
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.25s ease,
                visibility 0.25s ease,
                transform 0.25s ease;

    max-height: 80vh;
    overflow-y: auto;
    z-index: 1102;

    /* Firefox scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--nb-blue) rgba(255, 255, 255, 0.05);
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* WebKit scrollbar (Chrome/Safari) */
.dropdown-menu::-webkit-scrollbar        { width: 4px; }
.dropdown-menu::-webkit-scrollbar-track  { background: rgba(255, 255, 255, 0.05); }
.dropdown-menu::-webkit-scrollbar-thumb { background: var(--nb-blue); border-radius: 2px; }

.dropdown-section {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--nb-glass-border-soft);
}

.dropdown-section:last-child {
    border-bottom: none;
}

.dropdown-section-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0 1.25rem 0.5rem;
    color: var(--nb-blue-text);
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    color: white;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--nb-transition);
    background: transparent;
    border: none;
    width: 100%;
    border-bottom: 1px solid var(--nb-glass-border-faint);
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: var(--nb-blue);
    color: white;
    transform: translateX(5px);
}

.dropdown-item.active {
    background: var(--nb-blue);
    color: var(--nb-blue-text);
}

/* ==============================================
   Notification bell
   ============================================== */
.notification-bell {
    position: relative;
    background: var(--nb-glass-bg-strong);
    border: 1px solid var(--nb-glass-border);
    border-radius: 8px;
    padding: 0.5rem;
    color: white;
    cursor: pointer;
    transition: var(--nb-transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    backdrop-filter: var(--nb-blur-light);
    -webkit-backdrop-filter: var(--nb-blur-light);
}

.notification-bell:hover {
    background: var(--nb-glass-bg-hover);
    transform: translateY(-1px);
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #ef4444;
    color: white;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 0.1rem 0.3rem;
    border-radius: 10px;
    min-width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ==============================================
   Hamburger — hidden on desktop
   ============================================== */
.hamburger-menu {
    display: none; /* single hide; no redundant visibility/opacity needed */
    flex-direction: column;
    justify-content: space-between;
    width: 36px;
    height: 36px;
    background: var(--nb-glass-bg-strong);
    border: 1px solid var(--nb-glass-border);
    border-radius: 8px;
    cursor: pointer;
    padding: 8px 7px;
    transition: var(--nb-transition);
    z-index: 1105;
    flex-shrink: 0;
    backdrop-filter: var(--nb-blur-light);
    -webkit-backdrop-filter: var(--nb-blur-light);
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background: white;
    border-radius: 2px;
    transition: var(--nb-transition);
    display: block;
}

.hamburger-menu.active {
    background: var(--nb-blue);
    border-color: var(--nb-blue-border-strong);
}

.hamburger-menu.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger-menu.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile‑only links — hidden on desktop */
.mobile-nav-links {
    display: none;
}

/* ==============================================
   MOBILE  ≤  768px
   ============================================== */
@media (max-width: 768px) {

    /* Nav bar */
    #global-navbar {
        background: var(--nb-glass-bg) !important;
        backdrop-filter: var(--nb-blur) saturate(180%) !important;
        -webkit-backdrop-filter: var(--nb-blur) saturate(180%) !important;
        border-bottom: 1px solid var(--nb-glass-border) !important;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15),
                    inset 0 1px 0 rgba(255, 255, 255, 0.08) !important;
        padding: 0 !important;
    }

    .global-navbar-inner {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 0.6rem 1rem;
        gap: 0;
    }

    .nav-club-header {
        display: block;
        text-align: left;
        flex: 1 1 auto;
        min-width: 0;
        margin: 0;
    }

    .nav-club-title {
        font-size: 0.9rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 100%;
    }

    .hamburger-menu {
        display: flex;
        position: static;
        margin-left: 0.75rem;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.20),
                    inset 0 1px 0 rgba(255, 255, 255, 0.10);
    }

    .hamburger-menu:hover {
        background: var(--nb-glass-bg-hover);
    }

    .desktop-only {
        display: none;
    }

    /* Slide‑out drawer */
    .nav-links-container {
        position: fixed !important;
        top: 0 !important;
        right: 0 !important;
        width: var(--nb-drawer-width) !important;
        height: 100vh !important;          /* fallback */
        height: 100dvh !important;         /* accounts for mobile browser chrome */
        background: var(--nb-drawer-bg) !important;
        backdrop-filter: var(--nb-blur-strong) saturate(180%) !important;
        -webkit-backdrop-filter: var(--nb-blur-strong) saturate(180%) !important;
        border-left: 1px solid var(--nb-glass-border) !important;
        box-shadow: var(--nb-shadow-drawer),
                    inset 1px 0 0 rgba(255, 255, 255, 0.06) !important;
        flex-direction: column !important;
        justify-content: flex-start !important;
        align-items: stretch !important;
        padding: 4.5rem 1.25rem 2rem !important;
        transform: translateX(100%) !important;
        transition: transform var(--nb-drawer-ease) !important;
        z-index: 1101 !important;
        overflow-y: auto !important;
        gap: 0 !important;

        /* Firefox scrollbar inside drawer */
        scrollbar-width: thin;
        scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
    }

    .nav-links-container.active {
        transform: translateX(0) !important;
    }



    .nav-center {
        flex-direction: column;
        width: 100%;
        gap: 0.35rem;
        justify-content: flex-start;
        flex: 0 0 auto;
        align-items: stretch;
    }

    .nav-center .glass-button,
    .nav-center a {
        width: 100%;
        justify-content: center;
        padding: 0.65rem 1rem;
        font-size: 0.875rem;
        border-radius: 0.75rem;
        background: var(--nb-glass-bg);
        border: 1px solid var(--nb-glass-border);
    }

    .nav-center .glass-button:hover,
    .nav-center a:hover {
        background: var(--nb-glass-bg-hover);
        transform: translateX(3px);
    }

    .nav-center .glass-button.active,
    .nav-center a.active {
        background: var(--nb-blue);
        border-color: var(--nb-blue-border);
        color: var(--nb-blue-text);
    }

    .mobile-nav-links {
        display: flex;
        flex-direction: column;
        width: 100%;
        gap: 0.35rem;
        margin-top: 0.5rem;
        padding-top: 0.75rem;
        border-top: 1px solid var(--nb-glass-border-soft);
    }

    .mobile-nav-links a {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        width: 100%;
        padding: 0.65rem 1rem;
        font-size: 0.875rem;
        font-weight: 500;
        border-radius: 0.75rem;
        background: var(--nb-glass-bg);
        border: 1px solid var(--nb-glass-border-soft);
        color: rgba(255, 255, 255, 0.85);
        text-decoration: none;
        transition: var(--nb-transition);
    }

    .mobile-nav-links a:hover {
        background: var(--nb-glass-bg-hover);
        color: white;
        transform: translateX(3px);
    }

    .mobile-section-label {
        display: block;
        text-align: center;
        font-size: 0.7rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.08em;
        color: rgba(255, 255, 255, 0.35);
        padding: 0.75rem 0.25rem 0.2rem;
    }

    .nav-auth {
        flex-direction: column;
        width: 100%;
        gap: 0.4rem;
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid var(--nb-glass-border-soft);
    }

    .nav-auth button {
        width: 100%;
        justify-content: center;
        padding: 0.65rem 1rem;
        font-size: 0.875rem;
    }

    .glass-button:focus-visible,
    .dropdown-item:focus-visible,
    .notification-bell:focus-visible,
    .nav-links-container a:focus-visible,
    .mobile-nav-links a:focus-visible,
    .hamburger-menu:focus-visible {
        outline: 2px solid var(--nb-blue-text);
        outline-offset: 2px;
    }
}

/* ==============================================
   SMALL MOBILE  ≤  480px
   ============================================== */
@media (max-width: 480px) {
    .nav-club-title {
        font-size: 0.8rem;
    }

    .nav-links-container {
        width: 100vw !important;
    }
}