/* Base */
html {scroll-behavior: smooth;}
html, body { height: 100%; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 400 var(--body-copy)/var(--body-lh) system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    padding-inline: 5vw;
}

/* 12-col container behavior (flex here for the nav) */
.container {
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: var(--med-space);
}

/* NAV BAR */
.site-header { padding-block: var(--sm-space);}

.nav-bar {
    display: flex;
    align-items: center;
    gap: var(--lg-space);
}

/* Logo */
.brand img { height: 10vh; display: block; } /* 32 = multiple of 4 */

/* Links */
.primary-nav {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--lg-space);
}

.primary-nav a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    padding: var(--xsm-space) var(--sm-space); /* 12 x 16 for touch target */
    border-radius: var(--pill-radius);
}

.primary-nav a:hover { color: var(--accent); }

.primary-nav a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px; /* 4px rule */
}

/* Hero Layout */
.hero {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
    max-width: var(--container);
    margin: 0 auto;
    padding-inline: var(--med-space);
    align-items: center;
    min-height: 100vh;
}

/* Left side (intro valley) */
.hero-left {
    grid-column: 1 / span 6;
    background: var(--surface);
    box-shadow: var(--inset-1); /* valley */
    border-radius: var(--lg-radius);
    padding: var(--xl-space);
}

/* Right side (value hill) */
.hero-right {
    grid-column: 8 / span 5;
    background: var(--surface);
    box-shadow: var(--elev-2); /* hill */
    border-radius: var(--lg-radius);
    padding: var(--xl-space);
}

/* Text hierarchy */
.hero h1 {
    font-size: calc(var(--header-copy) * 1.6);
    line-height: var(--header-lh);
    margin: 0 0 var(--med-space);
}

.hero h1 .accent {
    color: var(--accent);
}

.hero p {
    color: var(--muted);
    margin: 0 0 var(--lg-space);
    max-width: 48ch;
}

/* Neumorphic CTA Button */
.cta-btn {
    display: inline-block;
    background: var(--surface);
    color: var(--text);
    font-weight: 500;
    text-decoration: none;
    padding: var(--sm-space) var(--lg-space);
    border-radius: var(--pill-radius);
    box-shadow: var(--elev-1); /* hill */
    transition: all 0.2s ease;
}

.cta-btn:hover {
    color: var(--accent);
    box-shadow: var(--elev-2);
    transform: translateY(-1px);
}

.cta-btn:active {
    box-shadow: var(--inset-1);
    transform: translateY(1px);
}

.cta-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}

.work-heading {
    font-size: calc(var(--header-copy));
    line-height: var(--header-lh);
    margin: 0 0 var(--sm-space);
    text-align: center;
}

/* Section frame (you already have .work-section / .work-inner; adding layout only) */
.work-layout {
    display: grid;
    grid-template-columns: 1fr 50vw 1fr;
    justify-content: center;
    align-items: center;
    column-gap: var(--xxl-space);
    margin-inline: auto;
    padding-inline: var(--med-space);
}

/* Left = 3 buttons stacked, Right = 2 buttons stacked */
.switch-left,
.switch-right {
    width: var(--switch-col);
    display: flex;
    flex-direction: column;
    gap: var(--sm-space);
}

/* Bento valley placeholder stays centered in the middle column */
.work-bento {
    background: var(--surface);
    box-shadow: var(--inset-1);
    border-radius: var(--lg-radius);
    padding: var(--xl-space);
}

.switch-btn {
    background: var(--surface);
    border: none;
    border-radius: var(--pill-radius);
    padding: var(--sm-space) var(--lg-space);
    font-weight: 600;
    color: var(--text);
    box-shadow: var(--elev-1);
    cursor: pointer;
    transition: all 0.25s ease;
    width: 100%;
    position: relative;
    overflow: visible;
}

.switch-btn:hover {
    box-shadow: var(--elev-2);               /* higher elevation on hover */
}

.switch-btn:active{
    box-shadow: var(--inset-1);              /* pressed = valley */
    transform: translateY(1px);
}

.switch-btn.active{
    box-shadow: var(--inset-1);              /* pressed = valley */
    transform: translateY(1px);
}
.switch-btn::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -6px;                      /* sit just outside the pill; tweak if needed */
    width: 60%;
    height: 3px;
    background: var(--switch-accent, var(--accent));
    border-radius: 2px;
    transform: translateX(-50%) scaleX(0);
    transform-origin: center;
    opacity: 0;
    transition: transform .22s ease, opacity .22s ease;
}

/* Active = show the line (scale in from center) */
.switch-btn.active::after,
.switch-btn[aria-pressed="true"]::after {
    transform: translateX(-50%) scaleX(1);
    opacity: 1;
}

.case-arc.active        { color: var(--accent-arc); }
.case-old-castillo.active { color: var(--accent-old-castillo); }
.case-critical.active     { color: var(--accent-critical); }
.case-freshwater.active   { color: var(--accent-freshwater); }
.case-pinpoint.active     { color: var(--accent-pinpoint); }

.switch-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}

/* Optional active (selected) state */
.switch-btn.is-active,
.switch-btn[aria-pressed="true"] {
    box-shadow: var(--inset-1);
    color: var(--accent);
}

/* === Bento grid inside .work-bento === */
.work-layout {align-items: center;}

/* Bento valley — fills the middle track (which is 50vw) */
.work-bento {
    background: var(--surface);
    box-shadow: var(--inset-1);
    border-radius: var(--lg-radius);
    padding: var(--xl-space);
    width: 100%;
    justify-self: center;
}

/* Bento grid: unchanged (keeps your 3:2 look and row sizing) */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(5, 1fr);
    gap: var(--gutter);
    grid-auto-rows: clamp(72px, 12vw, 112px);
    width: 100%;
    aspect-ratio: 3 / 2;
}

/* Base tile */
.bento-tile {
    background: var(--surface);
    border-radius: var(--lg-radius);
    overflow: hidden;                   /* crops images nicely */
}

/* Optional hills (raised tiles) */
.hill-weak   { box-shadow: var(--elev-1); }
.hill-strong { box-shadow: var(--elev-2); }

/* Images fill tiles */
.bento-tile > img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.tile-3 > img {
    object-fit: contain;
    padding-right: 5rem;
}
.project-arc .tile-5 img { left:50px; }

.tile-6 {
    padding: var(--sm-space);
    font-size: .85rem;
    line-height: var(--body-lh);
    overflow: hidden;
    display: flex;
    align-items: flex-start;
    /* scrolling setup */
    overflow-y: auto;
    max-height: 300px;
    scrollbar-width: thin;
    scrollbar-color: rgba(0,0,0,.2) transparent;
}

.tile-6::-webkit-scrollbar {
    width: 6px;
}
.tile-6::-webkit-scrollbar-thumb {
    background-color: rgba(0,0,0,.2);
    border-radius: var(--pill-radius);
}
.tile-6::-webkit-scrollbar-track {
    background: transparent;
}



/* === 7-tile layout (5 rows × 6 cols) === */
.tile-1 { grid-column: 1 / span 3; grid-row: 1 / span 3; }
.tile-2 { grid-column: 1 / span 2; grid-row: 4 / span 2; }
.tile-3 { grid-column: 3 / span 4; grid-row: 4 / span 2; }
.tile-4 { grid-column: 4 / span 2; grid-row: 1 / span 1; }
.tile-5 { grid-column: 4 / span 1; grid-row: 2 / span 2; }
.tile-6 { grid-column: 5 / span 2; grid-row: 2 / span 2; }
.tile-7 { grid-column: 6 / span 1; grid-row: 1 / span 1; }
.about-hero{
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: var(--med-space);
    padding-block: var(--xl-space);
    align-items: center;
    min-height: 80svh; /* tall but not forced full-screen */
}

/* Left = HILL (photo) | Right = VALLEY (bio) */
.about-left{
    grid-column: 1 / span 5;              /* cols 1–5 */
    background: var(--surface);
    box-shadow: var(--elev-2);            /* hill */
    border-radius: var(--lg-radius);
    padding: var(--xl-space);
    display: grid;
    place-items: center;
    overflow: hidden; /* tidy image corners */
}
.about-photo{
    width: 100%;
    aspect-ratio: 4 / 5;                  /* pleasing portrait ratio */
    border-radius: var(--med-radius);
    overflow: hidden;
}
.about-photo img{
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 50% 50%;
    display: block;
}

.about-right{
    grid-column: 7 / span 6;              /* cols 7–12 */
    background: var(--surface);
    box-shadow: var(--inset-1);           /* valley */
    border-radius: var(--lg-radius);
    padding: var(--xl-space);
}

.about-right h1{
    margin: 0 0 var(--sm-space);
    font-size: calc(var(--header-copy) * 1.6);
    line-height: var(--header-lh);
}
.about-right p{
    margin: 0;
    color: var(--text);
    line-height: var(--body-lh);
    max-width: 64ch;
}
.about-right .muted{
    color: var(--muted);
}
.about-right .accent{
    color: var(--accent);
}
.contact-wrap{
    max-width: min(920px, calc(var(--container)));
    margin-inline: auto;
    padding-inline: var(--med-space);
    padding-block: clamp(var(--lg-space), 6vh, var(--xxl-space));
}

/* Big centered logo above the form */
.brand-hero{
    display: grid;
    place-items: center;
    margin-bottom: var(--lg-space);
}
.brand-hero img{
    width: clamp(160px, 26vw, 320px);
    aspect-ratio: 1 / 1;
    object-fit: contain;
    display: block;
    filter: drop-shadow(0 8px 20px rgba(0,0,0,.06));
}

/* Card that contains the form (hill) */
.contact-card{
    background: var(--surface);
    box-shadow: var(--elev-2);
    border-radius: var(--lg-radius);
    padding: clamp(var(--lg-space), 4vw, var(--xl-space));
}

.contact-title{
    margin: 0 0 var(--lg-space);
    font-size: calc(var(--header-copy) * 1.4);
    line-height: var(--header-lh);
}

/* Fields */
.field{
    margin-bottom: var(--med-space);
}
.field label{
    display: block;
    font-weight: 600;
    margin-bottom: var(--xsm-space);
    color: var(--text);
}

.input,
.textarea{
    width: 100%;
    background: var(--surface);
    border: none;
    outline: none;
    color: var(--text);
    padding: clamp(12px, 1.8vw, 16px);
    border-radius: var(--pill-radius);
    box-shadow: var(--inset-1);     /* valley */
    transition: box-shadow .2s ease, transform .06s ease;
}
.textarea{
    min-height: 112px;
    border-radius: var(--med-radius);
    resize: vertical;
}
.input:focus-visible,
.textarea:focus-visible{
    box-shadow: var(--inset-1), 0 0 0 2px color-mix(in srgb, var(--accent) 35%, transparent);
}
::placeholder{ color: color-mix(in srgb, var(--muted) 70%, #fff 0%); }

/* Actions */
.actions{
    display: flex;
    gap: var(--sm-space);
    align-items: center;
    margin-top: var(--sm-space);
    flex-wrap: wrap;
}

.btn{
    appearance: none;
    border: 0;
    cursor: pointer;
    font-weight: 600;
    padding: var(--sm-space) var(--lg-space);
    border-radius: var(--pill-radius);
    background: var(--surface);
    color: var(--text);
    box-shadow: var(--elev-1);          /* hill */
    transition: transform .1s ease, box-shadow .2s ease, opacity .2s ease;
}
.btn:hover{ box-shadow: var(--elev-2); }
.btn:active{ box-shadow: var(--inset-1); transform: translateY(1px); }
.btn:focus-visible{ outline: 2px solid var(--accent); outline-offset: 4px; }

.btn-primary{
    color: #fff;
    background: linear-gradient(
            180deg,
            color-mix(in srgb, var(--accent) 96%, #fff 4%),
            color-mix(in srgb, var(--accent) 78%, #000 22%)
    );
}
.btn-primary:hover{ box-shadow: var(--elev-2); }
.btn-primary:active{ box-shadow: var(--inset-1); }

.btn-ghost{
    background: var(--surface);
    color: var(--muted);
}

/* Keep header consistent spacing on this page */
.site-header{ padding-block: var(--sm-space); }

/* RESPONSIVE STACK */
@media (max-width: 900px){
    .about-hero{
        grid-template-columns: 1fr;
        row-gap: var(--lg-space);
        min-height: auto;
    }
    .about-left,
    .about-right{
        grid-column: auto;
    }
    /* Put bio first for context, photo second */
    .about-right{ order: -1; }
}

/* Small screens: keep shape but allow taller frame */
@media (max-width: 900px) {
    .bento-grid { aspect-ratio: auto; min-height: 520px; }
}

/* Responsive: stack controls above bento on small screens */
@media (max-width: 900px) {
    .work-layout {
        grid-template-columns: 1fr;
        max-width: var(--container);
    }
    .switch-left, .switch-right {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--sm-space);
        min-width: 0;
    }
    .work-bento { order: 3; }
}
/* ======= MVP mobile/adaptive stack ======= */
@media (max-width: 900px) {

    /* HERO: stack cards full width */
    .hero{
        grid-template-columns: 1fr;
        row-gap: var(--lg-space);
        min-height: auto;               /* no forced full-screen on small devices */
        padding-block: var(--lg-space); /* a little breathing room */
    }
    .hero-left,
    .hero-right{
        grid-column: 1 / -1;            /* both span full width */
    }
    /* (Optional) show intro first, value second */
    /* .hero-left { order: 1; }  -- order doesn't affect grid, so we leave as DOM order */

    /* WORK LAYOUT: single column — left buttons, right buttons, then bento */
    .work-layout{
        grid-template-columns: 1fr;
        justify-items: stretch;
        row-gap: var(--lg-space);
        column-gap: 0;
        padding-inline: var(--med-space);
    }

    .switch-left,
    .switch-right{
        width: 100%;
        max-width: 560px;               /* keep pills readable */
        margin-inline: auto;
        flex-direction: column;         /* already column, make it explicit */
        gap: var(--sm-space);
        align-items: stretch;
    }

    .work-bento{
        order: 3;                        /* appears after both stacks of buttons */
        width: 100%;
        padding: var(--lg-space);
    }

    /* BENTO GRID: collapse to one column and let each tile stack */
    .bento-grid{
        grid-template-columns: 1fr;
        grid-auto-rows: auto;
        aspect-ratio: auto;             /* allow natural height */
        gap: var(--sm-space);
    }

    /* Every tile spans full width in natural order */
    .tile-1,
    .tile-2,
    .tile-3,
    .tile-4,
    .tile-5,
    .tile-6,
    .tile-7{
        grid-column: 1 / -1 !important;
        grid-row: auto !important;
    }

    /* Reasonable minimum heights so images/text feel balanced */
    .bento-tile{
        min-height: clamp(160px, 42vw, 280px);
    }

    /* Text tile a bit larger for legibility on mobile */
    .tile-6{
        font-size: clamp(.9rem, 2.7vw, 1rem);
        padding: var(--sm-space);
    }

    /* ARC logo tile: ensure it fits inside single-column layout too */
    .tile-3 > img{
        padding-right: 0;
        object-fit: contain;
    }
}