/* =========================================================
   HISTORY MEGA MENU — DESKTOP
   ========================================================= */

/* ---------------------------------------------------------
   HISTORY WRAPPER
   --------------------------------------------------------- */

.nav-mega {
    position: relative;
}


/* ---------------------------------------------------------
   HISTORY TRIGGER
   --------------------------------------------------------- */

.nav-links .mega-trigger {
    color: var(--muted-light);
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;

    position: relative;

    padding-bottom: 4px;

    transition: color 0.2s ease;
}


/* UNDERLINE */

.nav-links .mega-trigger::after {
    content: "";

    position: absolute;

    left: 0;
    right: 0;
    bottom: 0;

    height: 1px;

    background: var(--gold);

    transform: scaleX(0);
    transform-origin: right;

    transition: transform 0.25s ease;
}


.nav-mega:hover .mega-trigger,
.nav-mega:focus-within .mega-trigger {
    color: var(--light-text);
}


.nav-mega:hover .mega-trigger::after,
.nav-mega:focus-within .mega-trigger::after {
    transform: scaleX(1);
    transform-origin: left;
}


/* ACTIVE HISTORY PAGE */

.nav-mega .mega-trigger.active {
    color: var(--gold-bright);
}


.nav-mega .mega-trigger.active::after {
    transform: scaleX(1);
    transform-origin: left;
}


/* ---------------------------------------------------------
   MEGA MENU CONTAINER
   --------------------------------------------------------- */

.mega-menu {
    position: fixed;

    top: 74px;
    left: 0;

    width: 100vw;
    height: calc(100dvh - 74px);

    background:
        linear-gradient(135deg,
            rgba(29, 31, 42, 1),
            rgba(18, 20, 28, 1));

    border: none;
    border-top: 2px solid var(--gold);

    box-shadow: none;

    backdrop-filter: none;

    opacity: 0;
    visibility: hidden;

    transform: translateY(-8px);

    pointer-events: none;

    transition:
        opacity 0.22s ease,
        transform 0.22s ease,
        visibility 0.22s ease;

    z-index: 1500;
}

/* ---------------------------------------------------------
   HOVER BRIDGE
   Prevents the menu from disappearing while the cursor
   moves from HISTORY into the dropdown.
   --------------------------------------------------------- */

.mega-menu::before {
    content: "";

    position: absolute;

    top: -20px;
    left: 0;

    width: 100%;
    height: 20px;
}


/* ---------------------------------------------------------
   SHOW MENU
   --------------------------------------------------------- */

.nav-mega:hover .mega-menu,
.nav-mega:focus-within .mega-menu {
    opacity: 1;
    visibility: visible;

    transform: translateY(0);

    pointer-events: auto;
}


/* ---------------------------------------------------------
   DESKTOP GRID
   --------------------------------------------------------- */

.mega-menu-inner {
    display: grid;

    grid-template-columns:
        1.25fr 1fr 1fr 1fr;

    gap: 0;

    padding: 2rem;

    max-width: 1400px;
    height: 100%;

    margin: 0 auto;

    overflow-y: auto;
    overscroll-behavior-y: contain;
    -webkit-overflow-scrolling: touch;
}

/* ---------------------------------------------------------
   INTRODUCTION COLUMN
   --------------------------------------------------------- */

.mega-intro {
    padding:
        0.3rem 2rem 0.5rem 0.3rem;

    border-right:
        1px solid var(--ink-line);
}


.mega-eyebrow {
    display: block;

    margin-bottom: 0.8rem;

    color: var(--gold-bright);

    font-family: var(--mono);

    font-size: 0.68rem;

    letter-spacing: 0.14em;

    text-transform: uppercase;
}


.mega-intro h3 {
    margin-bottom: 0.8rem;

    color: var(--light-text);

    font-size: 1.45rem;

    line-height: 1.2;
}


.mega-intro p {
    margin-bottom: 1.3rem;

    color: var(--muted-light);

    font-size: 0.88rem;

    line-height: 1.7;
}


/* EXPLORE HISTORY */

.mega-explore {
    display: inline-flex;

    align-items: center;

    gap: 0.5rem;

    color: var(--gold-bright);

    font-family: var(--mono);

    font-size: 0.72rem;

    letter-spacing: 0.08em;

    text-transform: uppercase;
}


.mega-explore span {
    transition: transform 0.2s ease;
}


.mega-explore:hover span {
    transform: translateX(4px);
}


/* ---------------------------------------------------------
   HISTORY COLUMNS
   --------------------------------------------------------- */

.mega-column {
    padding:
        0.3rem 1.5rem;
}


.mega-column h4 {
    margin-bottom: 1rem;

    color: var(--gold-bright);

    font-family: var(--mono);

    font-size: 0.65rem;

    letter-spacing: 0.12em;

    text-transform: uppercase;
}


.mega-column a {
    display: block;

    padding:
        0.65rem 0.7rem;

    margin:
        0 -0.7rem 0.25rem;

    border-radius: 2px;

    transition:
        background 0.2s ease,
        transform 0.2s ease;
}


.mega-column a:hover {
    background:
        rgba(201, 167, 94, 0.08);

    transform:
        translateX(4px);
}


/* PAGE TITLE */

.mega-column a strong {
    display: block;

    margin-bottom: 0.3rem;

    color: var(--light-text);

    font-size: 0.82rem;

    font-weight: 500;

    transition: color 0.2s ease;
}


.mega-column a:hover strong {
    color: var(--gold-bright);
}


/* PAGE DESCRIPTION */

.mega-column a span {
    display: block;

    color: var(--muted-light);

    font-size: 0.68rem;

    line-height: 1.5;
}


/* ---------------------------------------------------------
   ACTIVE PAGE INSIDE MEGA MENU
   --------------------------------------------------------- */

.mega-column a.active {
    background:
        rgba(201, 167, 94, 0.06);
}


.mega-column a.active strong {
    color: var(--gold-bright);
}


/* ---------------------------------------------------------
   MOBILE TOGGLE
   Hidden on desktop
   --------------------------------------------------------- */

.mega-mobile-toggle {
    display: none;
}

/* =========================================================
   HISTORY MEGA MENU — MOBILE & TABLET
   ========================================================= */

@media (max-width: 1100px) {

    /* ---------------------------------------------------------
     HISTORY WRAPPER
     --------------------------------------------------------- */

    .nav-mega {
        position: relative;

        width: 100%;

        border-bottom:
            1px solid var(--ink-line);
    }


    /* ---------------------------------------------------------
     HISTORY MAIN LINK
     --------------------------------------------------------- */

    .nav-mega .mega-trigger {
        display: block;

        width: calc(100% - 52px);

        padding:
            0.9rem 0;

        border-bottom: none;
    }


    /* Remove desktop hover behaviour on mobile */

    .nav-mega:hover .mega-trigger {
        color: var(--muted-light);
    }


    .nav-mega:hover .mega-trigger::after {
        transform: scaleX(0);
    }


    /* Keep active History page highlighted */

    .nav-mega .mega-trigger.active {
        color: var(--gold-bright);
    }


    .nav-mega .mega-trigger.active::after {
        transform: scaleX(1);
    }


    /* ---------------------------------------------------------
     MOBILE HISTORY ARROW
     --------------------------------------------------------- */

    .mega-mobile-toggle {
        display: flex;

        align-items: center;
        justify-content: center;

        position: absolute;

        top: 0;
        right: 0;

        width: 52px;
        height: 45px;

        padding: 0;

        border: none;

        background: transparent;

        cursor: pointer;
    }


    /* Arrow */

    .mega-mobile-toggle span {
        width: 8px;
        height: 8px;

        border-right:
            1px solid var(--muted-light);

        border-bottom:
            1px solid var(--muted-light);

        transform:
            rotate(45deg) translateY(-2px);

        transition:
            transform 0.25s ease,
            border-color 0.25s ease;
    }


    /* Arrow when open */

    .history-mega.mobile-open .mega-mobile-toggle span {
        border-color: var(--gold-bright);

        transform:
            rotate(-135deg) translate(-2px, -2px);
    }


    /* ---------------------------------------------------------
     MOBILE HISTORY PANEL
     --------------------------------------------------------- */

    .mega-menu {
        position: static;

        width: 100%;

        margin: 0;

        background: transparent;

        border: none;

        box-shadow: none;

        backdrop-filter: none;

        opacity: 1;

        visibility: visible;

        transform: none;

        pointer-events: auto;

        display: none;
    }


    /* Show when mobile History is expanded */

    .history-mega.mobile-open .mega-menu {
        display: block;
    }


    /* Remove desktop hover bridge */

    .mega-menu::before {
        display: none;
    }


    /* ---------------------------------------------------------
     MOBILE CONTENT LAYOUT
     --------------------------------------------------------- */

    .mega-menu-inner {
        display: block;

        padding:
            0.3rem 0 0.8rem 1rem;

        border-left:
            1px solid var(--ink-line);
    }


    /* Hide the large desktop introduction */

    .mega-intro {
        display: none;
    }


    /* ---------------------------------------------------------
     HISTORY SECTIONS
     --------------------------------------------------------- */

    .mega-column {
        padding:
            0.8rem 0;
    }


    .mega-column h4 {
        margin:
            0.25rem 0 0.65rem;

        color: var(--gold-bright);

        font-size: 0.64rem;

        letter-spacing: 0.1em;
    }


    /* ---------------------------------------------------------
     HISTORY PAGE LINKS
     --------------------------------------------------------- */

    .mega-column a {
        display: block;

        padding:
            0.6rem 0.65rem;

        margin:
            0 0 0.2rem;

        border-bottom: none;

        border-radius: 2px;

        transform: none;
    }


    .mega-column a:hover {
        transform: none;

        background:
            rgba(201, 167, 94, 0.06);
    }


    .mega-column a strong {
        font-size: 0.8rem;
    }


    .mega-column a span {
        font-size: 0.66rem;

        line-height: 1.5;
    }


    /* ---------------------------------------------------------
     ACTIVE HISTORY PAGE
     --------------------------------------------------------- */

    .mega-column a.active {
        background:
            rgba(201, 167, 94, 0.08);
    }


    .mega-column a.active strong {
        color: var(--gold-bright);
    }

}

/* =========================================================
   BRANCHES MEGA MENU — MOBILE
   ========================================================= */

@media (max-width: 1100px) {

    /* ---------------------------------------------------------
       BRANCHES ARROW WHEN OPEN
       --------------------------------------------------------- */

    .branches-mega.mobile-open .mega-mobile-toggle span {
        border-color: var(--gold-bright);

        transform:
            rotate(-135deg) translate(-2px, -2px);
    }


    /* ---------------------------------------------------------
       SHOW BRANCHES MEGA MENU WHEN EXPANDED
       --------------------------------------------------------- */

    .branches-mega.mobile-open .mega-menu {
        display: block;
    }

}

/* =========================================================
   PHILOSOPHY COMMAND PALETTE
   ========================================================= */

/* ---------------------------------------------------------
   MAIN PALETTE
   --------------------------------------------------------- */

.philosophy-command-palette {
    position: fixed;

    inset: 0;

    width: 100%;
    height: 100%;

    display: flex;

    align-items: flex-start;
    justify-content: center;

    padding-top: 12vh;

    background: rgba(5, 7, 12, 0.72);

    opacity: 0;
    visibility: hidden;

    pointer-events: none;

    transition:
        opacity 0.2s ease,
        visibility 0.2s ease;

    z-index: 9999;
}


/* ---------------------------------------------------------
   OPEN STATE
   --------------------------------------------------------- */

.philosophy-command-palette.open {
    opacity: 1;

    visibility: visible;

    pointer-events: auto;
}


/* ---------------------------------------------------------
   BACKDROP
   --------------------------------------------------------- */

.command-backdrop {
    position: absolute;

    inset: 0;

    background:
        rgba(5, 7, 12, 0.68);
}


/* ---------------------------------------------------------
   COMMAND WINDOW
   --------------------------------------------------------- */

.command-window {
    position: relative;

    width: min(680px, calc(100vw - 32px));

    max-height: 70vh;

    display: flex;

    flex-direction: column;

    background:
        linear-gradient(135deg,
            rgba(29, 31, 42, 1),
            rgba(18, 20, 28, 1));

    border:
        1px solid var(--ink-line);

    border-top:
        2px solid var(--gold);

    box-shadow:
        0 24px 70px rgba(0, 0, 0, 0.55);

    transform:
        translateY(-12px) scale(0.98);

    transition:
        transform 0.22s ease;
}


/* OPEN ANIMATION */

.philosophy-command-palette.open .command-window {
    transform:
        translateY(0) scale(1);
}


/* =========================================================
   SEARCH BAR
   ========================================================= */

.command-search {
    display: flex;

    align-items: center;

    min-height: 64px;

    padding:
        0 1rem;

    border-bottom:
        1px solid var(--ink-line);
}


.command-search-icon {
    margin-right: 0.8rem;

    color: var(--gold-bright);

    font-size: 1.35rem;

    line-height: 1;
}


.command-input {
    flex: 1;

    width: 100%;

    border: none;

    outline: none;

    background: transparent;

    color: var(--light-text);

    font-family: var(--mono);

    font-size: 0.85rem;

    letter-spacing: 0.03em;
}


.command-input::placeholder {
    color: var(--muted-light);

    opacity: 0.75;
}


/* ---------------------------------------------------------
   CLOSE BUTTON
   --------------------------------------------------------- */

.command-close {
    margin-left: 0.8rem;

    padding:
        0.35rem 0.55rem;

    border:
        1px solid var(--ink-line);

    border-radius: 2px;

    background: transparent;

    color: var(--muted-light);

    font-family: var(--mono);

    font-size: 0.62rem;

    letter-spacing: 0.08em;

    cursor: pointer;

    transition:
        color 0.2s ease,
        border-color 0.2s ease,
        background 0.2s ease;
}


.command-close:hover {
    color: var(--gold-bright);

    border-color:
        var(--gold);

    background:
        rgba(201, 167, 94, 0.06);
}


/* =========================================================
   RESULTS
   ========================================================= */

.command-results {
    overflow-y: auto;

    max-height: 52vh;

    padding:
        0.55rem;
}


/* ---------------------------------------------------------
   RESULT
   --------------------------------------------------------- */

.command-result {
    width: 100%;

    display: flex;

    align-items: center;

    justify-content: space-between;

    gap: 1rem;

    padding:
        0.85rem 0.9rem;

    margin-bottom: 0.2rem;

    border:
        1px solid transparent;

    border-radius: 2px;

    background: transparent;

    color: var(--light-text);

    text-align: left;

    cursor: pointer;

    transition:
        background 0.15s ease,
        border-color 0.15s ease,
        transform 0.15s ease;
}


/* SELECTED / HOVER */

.command-result:hover,
.command-result.selected {
    background:
        rgba(201, 167, 94, 0.08);

    border-color:
        rgba(201, 167, 94, 0.18);
}


/* SELECTED SLIGHT MOVEMENT */

.command-result.selected {
    transform:
        translateX(2px);
}


/* ---------------------------------------------------------
   RESULT MAIN CONTENT
   --------------------------------------------------------- */

.command-result-main {
    min-width: 0;

    display: flex;

    flex-direction: column;

    gap: 0.3rem;
}


.command-result-main strong {
    color: var(--light-text);

    font-family: var(--mono);

    font-size: 0.78rem;

    font-weight: 500;

    letter-spacing: 0.04em;
}


.command-result.selected .command-result-main strong {
    color: var(--gold-bright);
}


.command-result-main small {
    color: var(--muted-light);

    font-size: 0.68rem;

    line-height: 1.5;
}


/* ---------------------------------------------------------
   CATEGORY
   --------------------------------------------------------- */

.command-result-category {
    flex-shrink: 0;

    color: var(--gold-bright);

    font-family: var(--mono);

    font-size: 0.58rem;

    letter-spacing: 0.1em;

    text-transform: uppercase;

    opacity: 0.8;
}


/* =========================================================
   EMPTY SEARCH
   ========================================================= */

.command-empty {
    display: flex;

    flex-direction: column;

    gap: 0.45rem;

    padding:
        2rem 1rem;

    text-align: center;
}


.command-empty strong {
    color: var(--light-text);

    font-family: var(--mono);

    font-size: 0.78rem;

    font-weight: 500;
}


.command-empty span {
    color: var(--muted-light);

    font-size: 0.7rem;
}


/* =========================================================
   FOOTER
   ========================================================= */

.command-footer {
    display: flex;

    align-items: center;

    gap: 1.2rem;

    padding:
        0.7rem 1rem;

    border-top:
        1px solid var(--ink-line);

    color: var(--muted-light);

    font-family: var(--mono);

    font-size: 0.58rem;

    letter-spacing: 0.04em;
}


.command-footer span {
    display: inline-flex;

    align-items: center;

    gap: 0.35rem;
}


.command-footer kbd {
    min-width: 20px;

    padding:
        0.18rem 0.3rem;

    border:
        1px solid var(--ink-line);

    border-radius: 2px;

    background:
        rgba(255, 255, 255, 0.025);

    color: var(--muted-light);

    font-family: var(--mono);

    font-size: 0.55rem;

    text-align: center;
}


/* =========================================================
   PREVENT PAGE SCROLLING
   ========================================================= */

body.command-palette-open {
    overflow: hidden;
}


/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 600px) {

    .philosophy-command-palette {
        padding-top: 7vh;
    }


    .command-window {
        width: calc(100vw - 20px);

        max-height: 80vh;
    }


    .command-search {
        min-height: 58px;

        padding:
            0 0.75rem;
    }


    .command-input {
        font-size: 0.78rem;
    }


    .command-results {
        max-height: 62vh;
    }


    .command-result {
        padding:
            0.75rem 0.65rem;

        gap: 0.5rem;
    }


    .command-result-main strong {
        font-size: 0.72rem;
    }


    .command-result-main small {
        font-size: 0.62rem;
    }


    .command-result-category {
        display: none;
    }


    .command-footer {
        gap: 0.7rem;

        padding:
            0.6rem 0.7rem;

        overflow-x: auto;

        white-space: nowrap;
    }

}

/* =========================================================
   BOOKS MEGA MENU LAYOUT
   ========================================================= */

.books-mega .mega-menu-inner {
    display: grid;

    grid-template-columns:
        1.15fr repeat(3, minmax(0, 1fr));

    grid-auto-rows: max-content;

    gap: 0;

    width: min(1700px, 94vw);

    margin: 0 auto;

    box-sizing: border-box;
}


/* ---------------------------------------------------------
   BOOKS INTRODUCTION
   Stays permanently in the first column
   --------------------------------------------------------- */

.books-mega .mega-intro {
    grid-column: 1;

    grid-row: 1 / span 3;
}


/* ---------------------------------------------------------
   BOOK COLLECTION COLUMNS
   --------------------------------------------------------- */

.books-mega .mega-column {
    min-width: 0;

    padding:
        0.3rem 1.5rem;
}


/* ---------------------------------------------------------
   KEEP COLLECTIONS OUT OF THE INTRO COLUMN
   --------------------------------------------------------- */

.books-mega .mega-column:nth-of-type(2) {
    grid-column: 2;
}

.books-mega .mega-column:nth-of-type(3) {
    grid-column: 3;
}

.books-mega .mega-column:nth-of-type(4) {
    grid-column: 4;
}

.books-mega .mega-column:nth-of-type(5) {
    grid-column: 2;
}

.books-mega .mega-column:nth-of-type(6) {
    grid-column: 3;
}

.books-mega .mega-column:nth-of-type(7) {
    grid-column: 4;
}

.books-mega .mega-column:nth-of-type(8) {
    grid-column: 2;
}

/* ---------------------------------------------------------
   COLLECTION GRID
   --------------------------------------------------------- */

.books-collections {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    align-content: start;

    gap: 1.5rem 0;
}


/* ---------------------------------------------------------
   COLLECTION
   --------------------------------------------------------- */

.books-collections .mega-column {
    min-width: 0;

    padding:
        0.2rem 1rem;
}


/* ---------------------------------------------------------
   COMPACT LINKS
   --------------------------------------------------------- */

.books-collections .mega-column a {
    padding:
        0.42rem 0.55rem;

    margin:
        0 -0.55rem 0.12rem;
}


.books-collections .mega-column h4 {
    margin-bottom: 0.65rem;
}


.books-collections .mega-column a strong {
    margin-bottom: 0.18rem;

    font-size: 0.75rem;
}


.books-collections .mega-column a span {
    font-size: 0.61rem;

    line-height: 1.35;
}

/* =========================================================
   MOBILE — BOOKS MEGA MENU
   ========================================================= */

@media (max-width: 768px) {

    .books-mega .mega-menu-inner {
        display: block;
        width: 100%;
        margin: 0;
    }

    .books-mega .mega-intro {
        grid-column: auto;
        grid-row: auto;
    }

    .books-mega .mega-column {
        grid-column: auto !important;
        grid-row: auto !important;
        width: 100%;
        padding: 0.3rem 0;
    }

    .books-collections {
        display: block;
        width: 100%;
    }

    .books-collections .mega-column {
        width: 100%;
        padding: 0.2rem 0;
    }

    .books-collections .mega-column a {
        margin: 0;
    }

}