/* =========================================================
   CSE COMPUTER EDUCATION — STABLE NAVIGATION V6
   Mobile menu opens below the header. No overlay, blur,
   drawer, body locking, or trapped page interaction.
========================================================= */

:root {
    --cse-nav-red: #d71920;
    --cse-nav-red-dark: #9f1016;
    --cse-nav-red-deep: #73080d;
    --cse-nav-red-soft: #fff1f2;
    --cse-nav-ink: #151923;
    --cse-nav-muted: #667085;
    --cse-nav-line: #eadfe0;
    --cse-nav-white: #ffffff;
    --cse-nav-shadow: 0 16px 42px rgba(40, 18, 20, 0.10);
}

.cseNavTopbar,
.cseNavHeader,
.cseNavTopbar *,
.cseNavHeader * {
    box-sizing: border-box;
}

.cseNavTopbar {
    position: relative;
    z-index: 1202;
    width: 100%;
    background: linear-gradient(90deg, #74090d 0%, #ad0d15 52%, #74090d 100%) !important;
    color: #ffffff !important;
}

.cseNavTopbarInner {
    min-height: 38px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.cseNavTopbarInfo,
.cseNavTopbarContact,
.cseNavTopbarInfo > span,
.cseNavTopbarContact > a {
    display: flex;
    align-items: center;
}

.cseNavTopbarInfo,
.cseNavTopbarContact {
    gap: 22px;
    min-width: 0;
}

.cseNavTopbarInfo > span,
.cseNavTopbarContact > a {
    gap: 8px;
    min-width: 0;
    margin: 0 !important;
    color: rgba(255, 255, 255, 0.95) !important;
    font-size: 12px !important;
    font-weight: 700 !important;
    line-height: 1.2 !important;
    text-decoration: none !important;
    white-space: nowrap;
}

.cseNavTopbarInfo i,
.cseNavTopbarContact i {
    color: #ffd5d7 !important;
    font-size: 12px !important;
}

.cseNavHeader {
    position: sticky !important;
    top: 0 !important;
    z-index: 1200 !important;
    width: 100%;
    background: rgba(255, 255, 255, 0.99) !important;
    border-bottom: 1px solid rgba(159, 16, 22, 0.12) !important;
    box-shadow: var(--cse-nav-shadow) !important;
    filter: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

.cseNavHeaderInner {
    min-height: 86px;
    display: grid;
    grid-template-columns: minmax(260px, auto) minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
}

.cseNavBrand {
    min-width: 0;
    display: inline-flex !important;
    align-items: center !important;
    gap: 13px !important;
    color: var(--cse-nav-ink) !important;
    text-decoration: none !important;
}

.cseNavBrandLogo {
    width: 61px;
    height: 61px;
    min-width: 61px;
    display: grid;
    place-items: center;
    overflow: visible;
    background: transparent !important;
    border: 0 !important;
    box-shadow: none !important;
}

.cseNavBrandLogo img {
    width: 100% !important;
    height: 100% !important;
    display: block !important;
    object-fit: contain !important;
    background: transparent !important;
    border: 0 !important;
    box-shadow: none !important;
}

.cseNavBrandFallback {
    width: 58px;
    height: 58px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--cse-nav-red), var(--cse-nav-red-dark));
    color: #ffffff;
    font-size: 16px;
    font-weight: 900;
}

.cseNavBrandText {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.cseNavBrandText strong,
.cseNavBrandText small {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.cseNavBrandText strong {
    max-width: 260px;
    color: #151923 !important;
    font-family: "Space Grotesk", "Sora", "Manrope", sans-serif !important;
    font-size: 19px !important;
    font-weight: 850 !important;
    line-height: 1.08 !important;
    letter-spacing: -0.035em !important;
}

.cseNavBrandText small {
    max-width: 250px;
    color: var(--cse-nav-muted) !important;
    font-size: 10px !important;
    font-weight: 700 !important;
    line-height: 1.25 !important;
}

.cseNavDrawer {
    min-width: 0;
    position: static;
    display: block;
}

.cseNavMenu {
    min-width: 0;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 3px !important;
    margin: 0 !important;
    padding: 0 !important;
}

.cseNavMenu > a,
.cseNavDropdownButton {
    position: relative;
    min-height: 46px;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
    margin: 0 !important;
    padding: 0 13px !important;
    border: 0 !important;
    border-radius: 12px !important;
    background: transparent !important;
    color: #343a46 !important;
    font-family: inherit !important;
    font-size: 13px !important;
    font-weight: 760 !important;
    line-height: 1 !important;
    text-decoration: none !important;
    white-space: nowrap !important;
    cursor: pointer;
    transition: color .18s ease, background-color .18s ease, transform .18s ease;
}

.cseNavMenu > a:hover,
.cseNavDropdownButton:hover,
.cseNavMenu > a.is-active,
.cseNavDropdown.is-current > .cseNavDropdownButton,
.cseNavDropdown.is-open > .cseNavDropdownButton {
    color: var(--cse-nav-red-dark) !important;
    background: var(--cse-nav-red-soft) !important;
}

.cseNavDropdown {
    position: relative;
}

.cseNavDropdownButton i {
    font-size: 10px !important;
    transition: transform .18s ease;
}

.cseNavDropdown.is-open > .cseNavDropdownButton i,
.cseNavDropdown:hover > .cseNavDropdownButton i {
    transform: rotate(180deg);
}

.cseNavDropdownBridge {
    position: absolute;
    top: 100%;
    left: 50%;
    width: 610px;
    padding-top: 12px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translate(-50%, 10px);
    transition: opacity .18s ease, visibility .18s ease, transform .18s ease;
}

.cseNavDropdown:hover > .cseNavDropdownBridge,
.cseNavDropdown:focus-within > .cseNavDropdownBridge,
.cseNavDropdown.is-open > .cseNavDropdownBridge {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, 0);
}

.cseNavDropdownPanel {
    display: grid;
    grid-template-columns: 0.88fr 1.12fr;
    gap: 13px;
    padding: 13px;
    border: 1px solid #eadfe0;
    border-radius: 22px;
    background: #ffffff;
    box-shadow: 0 28px 70px rgba(50, 20, 25, 0.18);
}

.cseNavDropdownIntro {
    min-height: 100%;
    padding: 22px;
    border-radius: 17px;
    background: linear-gradient(145deg, #850b11, #d71920);
    color: #ffffff;
}

.cseNavDropdownEyebrow {
    display: block;
    margin-bottom: 12px;
    color: #ffdadd !important;
    font-size: 9px !important;
    font-weight: 850 !important;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.cseNavDropdownIntro > strong {
    display: block;
    color: #ffffff !important;
    font-size: 19px !important;
    font-weight: 850 !important;
    line-height: 1.25 !important;
}

.cseNavDropdownIntro > p {
    margin: 10px 0 18px !important;
    color: rgba(255, 255, 255, .82) !important;
    font-size: 11px !important;
    line-height: 1.65 !important;
}

.cseNavDropdownIntro > a {
    display: inline-flex !important;
    align-items: center !important;
    gap: 8px !important;
    color: #ffffff !important;
    font-size: 11px !important;
    font-weight: 800 !important;
    text-decoration: none !important;
}

.cseNavDropdownLinks {
    display: grid;
    gap: 8px;
}

.cseNavDropdownLinks > a {
    display: grid !important;
    grid-template-columns: 45px minmax(0, 1fr) 18px;
    align-items: center;
    gap: 12px !important;
    padding: 12px !important;
    border: 1px solid transparent !important;
    border-radius: 14px !important;
    color: var(--cse-nav-ink) !important;
    text-decoration: none !important;
    transition: border-color .18s ease, background-color .18s ease, transform .18s ease;
}

.cseNavDropdownLinks > a:hover {
    border-color: #f1d6d8 !important;
    background: #fff7f7 !important;
    transform: translateX(2px);
}

.cseNavDropdownIcon {
    width: 45px;
    height: 45px;
    display: grid;
    place-items: center;
    border-radius: 13px;
    background: #fff0f1;
    color: var(--cse-nav-red) !important;
    font-size: 15px !important;
}

.cseNavDropdownCopy strong,
.cseNavDropdownCopy small {
    display: block;
}

.cseNavDropdownCopy strong {
    color: #1d222e !important;
    font-size: 12px !important;
    font-weight: 850 !important;
    line-height: 1.3 !important;
}

.cseNavDropdownCopy small {
    margin-top: 4px;
    color: var(--cse-nav-muted) !important;
    font-size: 10px !important;
    line-height: 1.45 !important;
}

.cseNavDropdownArrow {
    color: #a5adba !important;
    font-size: 11px !important;
}

.cseNavHeaderCta {
    min-height: 49px;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 10px !important;
    padding: 0 20px !important;
    border: 1px solid var(--cse-nav-red) !important;
    border-radius: 13px !important;
    background: linear-gradient(135deg, #e31a22, #b20f15) !important;
    color: #ffffff !important;
    font-size: 12px !important;
    font-weight: 850 !important;
    text-decoration: none !important;
    white-space: nowrap !important;
    box-shadow: 0 14px 30px rgba(201, 20, 27, 0.24) !important;
}

.cseNavMenuButton,
.cseNavMobileCta {
    display: none !important;
}

@media (max-width: 1240px) {
    .cseNavHeaderInner {
        grid-template-columns: minmax(225px, auto) minmax(0, 1fr) auto;
        gap: 14px;
    }

    .cseNavBrandLogo {
        width: 55px;
        height: 55px;
        min-width: 55px;
    }

    .cseNavBrandText strong {
        max-width: 205px;
        font-size: 17px !important;
    }

    .cseNavMenu > a,
    .cseNavDropdownButton {
        padding-inline: 10px !important;
        font-size: 12px !important;
    }

    .cseNavHeaderCta {
        padding-inline: 16px !important;
    }
}

@media (max-width: 1080px) {
    html,
    body,
    body > * {
        filter: none !important;
        -webkit-filter: none !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    .cseNavOpeningHours {
        display: none !important;
    }

    .cseNavHeaderInner {
        min-height: 76px;
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 14px;
    }

    .cseNavHeaderCta {
        display: none !important;
    }

    .cseNavBrandLogo {
        width: 54px;
        height: 54px;
        min-width: 54px;
    }

    .cseNavBrandText strong {
        max-width: 270px;
        font-size: 18px !important;
    }

    .cseNavMenuButton {
        width: 46px;
        height: 46px;
        display: grid !important;
        place-content: center;
        gap: 5px;
        padding: 0 !important;
        border: 1px solid #eadfe0 !important;
        border-radius: 13px !important;
        background: #ffffff !important;
        box-shadow: 0 8px 22px rgba(40, 18, 20, 0.08) !important;
        cursor: pointer;
    }

    .cseNavMenuButton span {
        width: 22px;
        height: 2px;
        display: block;
        margin: 0 !important;
        border-radius: 999px;
        background: #1d222e !important;
        transition: transform .2s ease, opacity .2s ease;
    }

    .cseNavMenuButton.is-open span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .cseNavMenuButton.is-open span:nth-child(2) {
        opacity: 0;
    }

    .cseNavMenuButton.is-open span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .cseNavDrawer {
        position: absolute !important;
        top: 100% !important;
        left: 0 !important;
        right: 0 !important;
        z-index: 1205 !important;
        width: 100% !important;
        max-height: calc(100dvh - 76px) !important;
        display: block !important;
        overflow-x: hidden !important;
        overflow-y: auto !important;
        border-top: 1px solid #eee3e4 !important;
        border-bottom: 1px solid #eadfe0 !important;
        background: #ffffff !important;
        box-shadow: 0 28px 55px rgba(38, 17, 20, 0.18) !important;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(-10px);
        transition: opacity .2s ease, visibility .2s ease, transform .2s ease;
    }

    .cseNavDrawer.is-open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }

    .cseNavMenu {
        width: min(100%, 760px);
        display: grid !important;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        align-items: stretch !important;
        justify-content: stretch !important;
        gap: 8px !important;
        margin: 0 auto !important;
        padding: 16px 18px 22px !important;
    }

    .cseNavMenu > a,
    .cseNavDropdownButton {
        width: 100% !important;
        min-height: 50px !important;
        justify-content: space-between !important;
        padding: 0 15px !important;
        border: 1px solid #eee4e5 !important;
        border-radius: 13px !important;
        background: #ffffff !important;
        color: #252a35 !important;
        font-size: 14px !important;
        text-align: left !important;
        transform: none !important;
    }

    .cseNavMenu > a.is-active,
    .cseNavDropdown.is-current > .cseNavDropdownButton,
    .cseNavDropdown.is-open > .cseNavDropdownButton {
        border-color: #f1cfd2 !important;
        background: var(--cse-nav-red-soft) !important;
        color: var(--cse-nav-red-dark) !important;
    }

    .cseNavDropdown {
        width: 100%;
    }

    .cseNavDropdownBridge {
        position: static !important;
        width: 100% !important;
        max-height: 0;
        padding: 0 !important;
        overflow: hidden;
        opacity: 1 !important;
        visibility: visible !important;
        pointer-events: auto !important;
        transform: none !important;
        transition: max-height .28s ease, padding .28s ease;
    }

    .cseNavDropdown.is-open > .cseNavDropdownBridge {
        max-height: 720px;
        padding-top: 7px !important;
    }

    .cseNavDropdownPanel {
        display: block;
        padding: 8px;
        border: 1px solid #f0dfe1;
        border-radius: 14px;
        background: #fff8f8;
        box-shadow: none;
    }

    .cseNavDropdownIntro {
        display: none;
    }

    .cseNavDropdownLinks {
        gap: 7px;
    }

    .cseNavDropdownLinks > a {
        grid-template-columns: 40px minmax(0, 1fr) 16px;
        gap: 10px !important;
        padding: 10px !important;
        border-radius: 12px !important;
        background: #ffffff !important;
    }

    .cseNavDropdownIcon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        font-size: 13px !important;
    }

    .cseNavMobileCta {
        min-height: 52px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 10px !important;
        grid-column: 1 / -1;
        border: 1px solid var(--cse-nav-red) !important;
        background: linear-gradient(135deg, #e31a22, #a80e14) !important;
        color: #ffffff !important;
        box-shadow: 0 13px 28px rgba(176, 15, 21, 0.18) !important;
    }
}

@media (max-width: 640px) {
    .cseNavTopbarInner {
        min-height: 34px;
    }

    .cseNavTopbarInfo {
        min-width: 0;
        max-width: calc(100% - 84px);
    }

    .cseNavTopbarInfo > span > span {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .cseNavTopbarContact {
        gap: 8px;
    }

    .cseNavTopbarContact > a {
        width: 28px;
        height: 28px;
        justify-content: center;
        font-size: 0 !important;
    }

    .cseNavHeaderInner {
        min-height: 70px;
    }

    .cseNavBrandLogo {
        width: 49px;
        height: 49px;
        min-width: 49px;
    }

    .cseNavBrand {
        gap: 9px !important;
    }

    .cseNavBrandText strong {
        max-width: 205px;
        font-size: 16px !important;
    }

    .cseNavBrandText small {
        max-width: 200px;
        font-size: 8px !important;
    }

    .cseNavMenuButton {
        width: 43px;
        height: 43px;
    }

    .cseNavDrawer {
        max-height: calc(100dvh - 70px) !important;
    }

    .cseNavMenu {
        grid-template-columns: 1fr;
        padding: 13px 14px 18px !important;
    }

    .cseNavMobileCta {
        grid-column: auto;
    }
}

@media (max-width: 390px) {
    .cseNavBrandText strong {
        max-width: 170px;
        font-size: 14px !important;
    }

    .cseNavBrandText small {
        max-width: 165px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .cseNavHeader * {
        transition: none !important;
        animation: none !important;
    }
}