/* ============================================
   KASTURI WING NAV — Shared Navigation System
   Used by: Secondary School, College, Management
   (Kasturi Academy uses its own ka/ nav system)
   Brand color: Kasturi Green #006837
   ============================================ */

/* ── Design tokens ── */
:root {
    --keg-primary:      #006837;
    --keg-primary-dark: #004d29;
    --keg-primary-mid:  #007a42;
    --keg-amber:        #f59e0b;
    --keg-amber-dark:   #d97706;
    --keg-surface:      #ffffff;
    --keg-bg:           #f0f9f4;
    --keg-border:       #c6ddd0;
    --keg-border-soft:  #e2f0e8;
    --keg-text:         #1a2e1a;
    --keg-text-sub:     #3d5c3d;
    --keg-text-muted:   #6b8c6b;
    --keg-mob-bg:       #003d20;
    --keg-t:            0.25s cubic-bezier(.4,0,.2,1);
    --keg-t-fast:       0.15s cubic-bezier(.4,0,.2,1);
    --keg-r:            6px;
    --keg-r-sm:         4px;
    --keg-r-lg:         12px;
    --keg-shadow:       0 1px 3px rgba(0,0,0,.10), 0 4px 12px rgba(0,0,0,.06);
    --keg-shadow-lg:    0 8px 24px rgba(0,0,0,.12), 0 2px 8px rgba(0,0,0,.06);
    --keg-z-header:     900;
    --keg-z-drawer:     950;
}

/* ── Header shell ── */
.keg-header {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: var(--keg-z-header);
    transition: background var(--keg-t), box-shadow var(--keg-t), border-color var(--keg-t);
    background: rgba(0, 52, 28, 0.92);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}
.keg-header.scrolled {
    background: var(--keg-surface);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    box-shadow: var(--keg-shadow);
    border-bottom: 1px solid var(--keg-border-soft);
}
body.has-wing-switcher .keg-header { top: 40px; }

.keg-header-inner {
    display: flex; align-items: center;
    justify-content: space-between;
    height: 80px; gap: 24px;
}

/* ── Logo ── */
.keg-logo {
    display: flex; align-items: center; gap: 10px;
    flex-shrink: 0; text-decoration: none;
}
.keg-logo img { height: 44px; width: auto; object-fit: contain; }
.keg-logo-text { display: flex; flex-direction: column; }
.keg-logo-text .keg-btm {
    font-family: 'Revue', serif;
    font-size: 16px; font-weight: 400;
    color: #fff; line-height: 1.2;
    transition: color var(--keg-t);
}
.keg-header.scrolled .keg-logo-text .keg-btm { color: var(--keg-primary); }

/* ── Desktop nav ── */
.keg-nav-desktop {
    display: flex; align-items: center; gap: 2px;
    flex: 1; justify-content: center;
}
.keg-nav-item { position: relative; }
.keg-nav-link {
    display: flex; align-items: center; gap: 5px;
    padding: 8px 13px; font-size: 14px; font-weight: 500;
    color: rgba(255,255,255,.85); border-radius: var(--keg-r);
    transition: all var(--keg-t-fast); cursor: pointer;
    white-space: nowrap; text-decoration: none;
}
.keg-nav-trigger {
    appearance: none; -webkit-appearance: none;
    border: none; background: none; font: inherit;
}
.keg-nav-link:hover { color: #fff; background: rgba(255,255,255,.12); }
.keg-nav-link:focus-visible { outline: 2px solid rgba(255,255,255,.75); outline-offset: 2px; }
.keg-nav-link .caret { font-size: 10px; transition: transform var(--keg-t-fast); }
.keg-nav-item:hover .keg-nav-link .caret,
.keg-nav-item.open .keg-nav-link .caret { transform: rotate(180deg); }
.keg-nav-link.keg-active-page { color: #fff; font-weight: 600; }

.keg-header.scrolled .keg-nav-link { color: var(--keg-text-sub); }
.keg-header.scrolled .keg-nav-link:hover { color: var(--keg-primary); background: var(--keg-bg); }
.keg-header.scrolled .keg-nav-link.keg-active-page { color: var(--keg-primary); }
.keg-header.scrolled .keg-nav-link:focus-visible { outline-color: var(--keg-primary); }

/* ── Dropdown ── */
.keg-dropdown {
    position: absolute; top: calc(100% + 8px); left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: var(--keg-surface); border: 1px solid var(--keg-border);
    border-radius: var(--keg-r-lg); padding: 8px; min-width: 210px;
    box-shadow: var(--keg-shadow-lg);
    opacity: 0; pointer-events: none;
    transition: opacity var(--keg-t-fast), transform var(--keg-t-fast);
    z-index: 50;
}
.keg-nav-item:hover .keg-dropdown,
.keg-nav-item.open .keg-dropdown,
.keg-nav-item:focus-within .keg-dropdown {
    opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0);
}
.keg-dropdown-link {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 12px; font-size: 13.5px; font-weight: 500;
    color: var(--keg-text-sub); border-radius: var(--keg-r-sm);
    transition: all var(--keg-t-fast); text-decoration: none;
}
.keg-dropdown-link:hover { color: var(--keg-primary); background: var(--keg-bg); }
.keg-dropdown-link i { width: 16px; color: var(--keg-text-muted); font-size: 13px; }
.keg-dropdown-link:hover i { color: var(--keg-primary); }

/* ── Header right ── */
.keg-header-right { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

/* CTA pill button */
.keg-btn-cta {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 9px 20px; font-size: 13.5px; font-weight: 600;
    background: var(--keg-amber); color: #fff;
    border-radius: 100px; text-decoration: none;
    transition: all var(--keg-t-fast);
    box-shadow: 0 2px 10px rgba(245,158,11,.35);
    white-space: nowrap;
}
.keg-btn-cta:hover {
    background: var(--keg-amber-dark);
    box-shadow: 0 4px 16px rgba(245,158,11,.45);
    transform: translateY(-1px);
}
.keg-header.scrolled .keg-btn-cta {
    background: var(--keg-primary);
    box-shadow: 0 2px 10px rgba(0,104,55,.28);
}
.keg-header.scrolled .keg-btn-cta:hover {
    background: var(--keg-primary-dark);
    box-shadow: 0 4px 16px rgba(0,104,55,.38);
    transform: translateY(-1px);
}

/* ── Hamburger ── */
.keg-hamburger,
.ka-hamburger,
.kc-hamburger,
.km-hamburger {
    display: none; flex-direction: column; justify-content: center; gap: 5px;
    width: 40px; height: 40px; padding: 6px;
    border-radius: var(--keg-r-sm); cursor: pointer;
    background: none; border: none;
    transition: background var(--keg-t-fast);
}
.keg-hamburger:hover,
.ka-hamburger:hover,
.kc-hamburger:hover,
.km-hamburger:hover { background: rgba(255,255,255,.12); }
.keg-header.scrolled .keg-hamburger:hover { background: var(--keg-bg); }
.keg-hamburger span,
.ka-hamburger span,
.kc-hamburger span,
.km-hamburger span {
    display: block; height: 2px; border-radius: 2px;
    background: rgba(255,255,255,.88);
    transition: all var(--keg-t);
}
.scrolled .keg-hamburger span,
.scrolled .ka-hamburger span,
.scrolled .kc-hamburger span,
.scrolled .km-hamburger span { background: var(--keg-text-sub); }

.keg-hamburger.open span:nth-child(1),
.ka-hamburger.open span:nth-child(1),
.kc-hamburger.open span:nth-child(1),
.km-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }

.keg-hamburger.open span:nth-child(2),
.ka-hamburger.open span:nth-child(2),
.kc-hamburger.open span:nth-child(2),
.km-hamburger.open span:nth-child(2) { opacity: 0; }

.keg-hamburger.open span:nth-child(3),
.ka-hamburger.open span:nth-child(3),
.kc-hamburger.open span:nth-child(3),
.km-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================
   MOBILE MENU (full-screen slide-in)
   ============================================ */
/* ============================================
   PREMIUM MOBILE MENU (Standardized)
   ============================================ */
:root {
    --keg-mob-active: var(--keg-amber);
    --keg-mob-brand: var(--keg-primary);
}

body.wing-academy {
    --keg-mob-brand: #0E2B4C; /* Midnight Navy */
}

.keg-mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: #fff; /* Light mode default */
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.keg-mobile-menu.open {
    display: flex;
    opacity: 1;
    visibility: visible;
}

/* Brand Theme Support */
[data-theme="dark"] .keg-mobile-menu,
.keg-mobile-menu.keg-mob-brand-theme {
    background: var(--keg-mob-brand);
    color: #fff;
}

.keg-mob-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    min-height: 80px;
}

.keg-mob-brand-theme .keg-mob-header {
    border-bottom-color: rgba(255,255,255,0.1);
}

.keg-mob-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.keg-mob-logo img {
    height: 52px;
    width: auto;
    object-fit: contain;
    transition: all 0.3s ease;
}

.keg-mob-brand-theme .keg-mob-logo img {
    filter: drop-shadow(0 0 10px rgba(255,255,255,0.15)) drop-shadow(0 0 2px rgba(255,255,255,0.8));
}

.keg-mob-logo-text {
    display: flex;
    flex-direction: column;
}

.keg-mob-logo-text .keg-title {
    font-family: 'Revue', serif;
    font-size: 19px;
    font-weight: 400;
    color: var(--keg-text);
    letter-spacing: 0.5px;
    line-height: 1;
    margin: 0;
}

.keg-mob-brand-theme .keg-mob-logo-text .keg-title {
    color: #fff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.keg-mob-close {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--keg-text-sub);
    background: rgba(0,0,0,0.03);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
}

.keg-mob-brand-theme .keg-mob-close {
    color: rgba(255,255,255,0.8);
    background: rgba(255,255,255,0.1);
}

.keg-mob-close:hover {
    background: rgba(0,0,0,0.08);
    transform: rotate(90deg);
}

.keg-mob-brand-theme .keg-mob-close:hover {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

/* Nav links */
.keg-mob-nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0;
}

.keg-mob-item {
    padding: 0 16px;
}

.keg-mob-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 12px;
    font-size: 17px;
    font-weight: 600;
    color: var(--keg-text-sub);
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.2s ease;
    margin-bottom: 4px;
}

.keg-mob-brand-theme .keg-mob-link {
    color: rgba(255,255,255,0.85);
}

.keg-mob-link:hover {
    background: rgba(0,0,0,0.03);
    color: var(--keg-primary);
}

.keg-mob-brand-theme .keg-mob-link:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
}

.keg-mob-link.keg-active-page {
    background: var(--keg-bg);
    color: var(--keg-primary);
}

.keg-mob-brand-theme .keg-mob-link.keg-active-page {
    background: rgba(255,255,255,0.15);
    color: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.keg-mob-link i {
    font-size: 14px;
    opacity: 0.6;
}

/* Dropdown */
.keg-mob-dropdown {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: rgba(0,0,0,0.02);
    border-radius: 12px;
    margin: 0 12px 12px;
}

.keg-mob-brand-theme .keg-mob-dropdown {
    background: rgba(255,255,255,0.05);
}

.keg-mob-item.open .keg-mob-dropdown {
    max-height: 500px; /* Large enough to fit any sub-menu */
    padding: 8px 0;
}

.keg-mob-dropdown-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    color: var(--keg-text-sub);
    text-decoration: none;
    transition: all 0.2s ease;
}

.keg-mob-brand-theme .keg-mob-dropdown-link {
    color: rgba(255,255,255,0.7);
}

.keg-mob-dropdown-link:hover {
    color: var(--keg-primary);
    padding-left: 28px;
}

.keg-mob-brand-theme .keg-mob-dropdown-link:hover {
    color: #fff;
}

/* Footer */
.keg-mob-footer {
    padding: 24px;
    border-top: 1px solid rgba(0,0,0,0.05);
    background: rgba(0,0,0,0.01);
}

.keg-mob-brand-theme .keg-mob-footer {
    border-top-color: rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.02);
}

.keg-mob-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px;
    font-size: 16px;
    font-weight: 700;
    background: var(--keg-amber);
    color: #fff;
    border-radius: 16px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(245,158,11,0.25);
    margin-bottom: 20px;
}

.keg-mob-cta:hover {
    background: var(--keg-amber-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(245,158,11,0.35);
}

.keg-mob-socials {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.keg-mob-socials a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--keg-text-muted);
    background: #fff;
    border: 1px solid var(--keg-border-soft);
    border-radius: 12px;
    transition: all 0.2s ease;
    text-decoration: none;
}

.keg-mob-brand-theme .keg-mob-socials a {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.8);
}

.keg-mob-socials a:hover {
    color: var(--keg-primary);
    background: var(--keg-bg);
    transform: translateY(-3px);
}

.keg-mob-brand-theme .keg-mob-socials a:hover {
    background: #fff;
    color: var(--keg-mob-brand);
}

/* ── Dark mode ── */
html[data-theme="dark"] .keg-header.scrolled {
    background: rgba(0, 30, 15, 0.96);
    border-bottom-color: rgba(0,104,55,.3);
}
html[data-theme="dark"] .keg-header.scrolled .keg-nav-link { color: rgba(255,255,255,.75); }
html[data-theme="dark"] .keg-header.scrolled .keg-nav-link:hover { color: #fff; background: rgba(0,104,55,.2); }
html[data-theme="dark"] .keg-header.scrolled .keg-logo-text .keg-btm { color: #4ade80; }

/* Prevent horizontal page overflow (stops scrollbar appearing behind header) */
body { overflow-x: hidden; }
/* Prevent body scroll when mobile menu is open */
body.no-scroll { overflow: hidden; }

/* ── Theme toggle inside header ── */
.keg-header-right .keg-theme-toggle {
    position: static;
    width: 36px; height: 36px;
    background: rgba(255,255,255,.12);
    box-shadow: none;
    border-radius: var(--keg-r-sm);
    color: rgba(255,255,255,.85);
    font-size: 14px;
    cursor: pointer; border: none;
    display: flex; align-items: center; justify-content: center;
    transition: background var(--keg-t-fast), color var(--keg-t-fast);
    flex-shrink: 0;
}
.keg-header-right .keg-theme-toggle:hover { background: rgba(255,255,255,.22); color: #fff; }
.keg-header.scrolled .keg-header-right .keg-theme-toggle {
    background: var(--keg-bg); color: var(--keg-text-sub);
}
.keg-header.scrolled .keg-header-right .keg-theme-toggle:hover {
    background: var(--keg-border); color: var(--keg-primary);
}

/* ── Responsive breakpoint ── */
@media (max-width: 900px) {
    .keg-hamburger,
    .ka-hamburger,
    .kc-hamburger,
    .km-hamburger { display: flex; }
    
    .keg-nav-desktop,
    .ka-nav-desktop,
    .kc-nav,
    .km-nav { display: none; }
    
    .keg-header-right .keg-btn-cta,
    .ka-header-right .ka-btn,
    .kc-header-right .kc-btn,
    .km-header-right .km-btn { display: none; }
    
    /* Ensure bottom pill-nav shows regardless of preceding element */
    .mobile-nav { display: flex !important; }
}

/* ============================================
   BOTTOM MOBILE NAV BAR  (.keg-bot-nav)
   Mirrors ka-bot-nav style: full-width bar,
   icon + label, active = green, apply = amber
   ============================================ */
.keg-bot-nav {
    display: none;
    position: fixed; bottom: 0; left: 0; right: 0;
    z-index: var(--keg-z-header);
    background: var(--keg-surface, #fff);
    border-top: 1px solid var(--keg-border-soft, #e2f0e8);
    padding: 6px 0 max(6px, env(safe-area-inset-bottom));
    box-shadow: 0 -2px 16px rgba(0,0,0,.06);
}
.keg-bot-nav-inner {
    display: flex;
    justify-content: space-around;
    align-items: center;
    max-width: 480px;
    margin: 0 auto;
}
.keg-bot-item {
    display: flex; flex-direction: column; align-items: center; gap: 3px;
    padding: 5px 10px;
    color: var(--keg-text-muted, #6b8c6b);
    font-size: 11px; font-weight: 600;
    letter-spacing: .01em;
    border-radius: var(--keg-r, 6px);
    text-decoration: none;
    transition: color var(--keg-t-fast, 0.15s);
    min-width: 48px; text-align: center;
}
.keg-bot-item i {
    font-size: 21px;
    transition: transform var(--keg-t-fast, 0.15s);
}
.keg-bot-item:hover i { transform: translateY(-2px); }
.keg-bot-item.active { color: var(--keg-primary, #006837); }
.keg-bot-item:hover  { color: var(--keg-primary, #006837); }

/* Apply CTA item */
.keg-bot-item.keg-bot-apply {
    color: var(--keg-amber, #f59e0b);
}
.keg-bot-item.keg-bot-apply:hover { color: var(--keg-amber-dark, #d97706); }

/* ── Wing Switcher Standard ── */
.wing-switcher {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1100;
    display: flex; align-items: center; justify-content: center;
    gap: 4px; height: 40px; background: rgba(15,23,42,0.96);
    -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 0 12px;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; -ms-overflow-style: none;
}
.wing-switcher::-webkit-scrollbar { display: none; }
.wing-switcher a {
    flex: 0 0 auto; display: flex; align-items: center; gap: 8px;
    padding: 6px 14px; font-size: 12px; font-weight: 400;
    font-family: 'Revue', serif;
    color: rgba(255,255,255,0.6); border-radius: 20px;
    white-space: nowrap; transition: all 0.2s ease;
    text-decoration: none;
    letter-spacing: 0.3px;
}
.wing-switcher a i { font-size: 14px; }
.wing-switcher a:hover { color: #fff; background: rgba(255,255,255,0.1); }
/* Brand-Aware Active States */
.wing-switcher a.ws-active { 
    color: #fff; 
    background: var(--keg-primary, #006837); 
    box-shadow: 0 4px 12px rgba(0,0,0,0.2); 
}

/* Wing-specific overrides for active states */
body.wing-secondary .wing-switcher a.ws-active { background: #006837; }
body.wing-academy   .wing-switcher a.ws-active { background: #0E2B4C; } /* Midnight Navy */
body.wing-college   .wing-switcher a.ws-active { background: #006837; }
body.wing-management .wing-switcher a.ws-active { background: #006837; }

@media (max-width: 900px) {
    .wing-switcher { 
        justify-content: flex-start; 
        padding: 0 16px; 
        gap: 8px;
        height: 44px; /* Slightly taller for better touch targets on mobile */
        box-shadow: 0 2px 12px rgba(0,0,0,0.2);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    .wing-switcher a { 
        padding: 6px 15px; 
        font-size: 11px;
        letter-spacing: 0.2px;
        border-radius: 22px; /* Smoother pill shape */
    }
    .wing-switcher a i { font-size: 13px; }
    
    /* Ensure span remains visible but compact */
    .wing-switcher a span { 
        display: inline-block; 
        margin-left: 5px;
    }
    
    .wing-switcher .ws-home i { margin: 0; }
    
    .keg-bot-nav { display: block; }
    /* Push page content above the bar */
    body.has-keg-bot-nav main,
    body.has-keg-bot-nav .keg-page-content { padding-bottom: 76px; }
}

@media (max-width: 480px) {
    .wing-switcher { 
        gap: 6px; 
        padding: 0 12px;
    }
    .wing-switcher a { 
        padding: 5px 12px;
        font-size: 10.5px;
        gap: 6px;
    }
    .wing-switcher a i { font-size: 12px; }
}

/* Global Header Offsets for all Wings when Switcher is present */
body.has-wing-switcher .main-header,
body.has-wing-switcher .ka-header,
body.has-wing-switcher .keg-header,
body.has-wing-switcher .km-header,
body.has-wing-switcher .kc-header,
body.has-wing-switcher .main-nav {
    top: 40px !important; /* Switcher desktop height */
}

/* Standardized Institutional Offsets */
body.has-wing-switcher .ka-hero,
body.has-wing-switcher .kc-hero,
body.has-wing-switcher .km-hero,
body.has-wing-switcher .ka-page-hero,
body.has-wing-switcher .kc-page-hero,
body.has-wing-switcher .km-page-hero,
body.has-wing-switcher .sec-home-hero {
    padding-top: 160px !important;
}

@media (max-width: 900px) {
    body.has-wing-switcher .main-header,
    body.has-wing-switcher .ka-header,
    body.has-wing-switcher .keg-header,
    body.has-wing-switcher .km-header,
    body.has-wing-switcher .kc-header,
    body.has-wing-switcher .main-nav {
        top: 44px !important; /* Switcher mobile height */
    }
    
    body.has-wing-switcher .ka-hero,
    body.has-wing-switcher .kc-hero,
    body.has-wing-switcher .km-hero,
    body.has-wing-switcher .ka-page-hero,
    body.has-wing-switcher .kc-page-hero,
    body.has-wing-switcher .km-page-hero,
    body.has-wing-switcher .sec-home-hero {
        padding-top: 140px !important;
    }
}