/* ===========================================
   jh-chrome.css — the site chrome, on its own

   The fixed <jh-nav> bar, the shape navigation, and the <jh-footer> oval,
   plus the design tokens they need. Split out of shared.css so a page that
   brings its OWN visual language can still wear the site's header and footer:
   openprose.html (the OpenProse case study) loads this file alone, while
   shared.css @imports it so every standard page is unchanged.

   Two rules keep it safe to drop into a foreign page:
     1. No bare element selectors. The nav is #nav and the footer is
        body > footer, so a host page's own <nav>/<footer> is untouched.
     2. Tokens a host might also define (gold, the spacing scale) are read
        through --jh- prefixed names. The unprefixed aliases below are what
        the rest of shared.css uses; a host page redefining --gold cannot
        reach the chrome through them.
=========================================== */

:root {
    /* Deep Sea Palette */
    --sea-deep: #020a12;
    --sea-mid: #051018;
    --sea-panel: rgba(0, 20, 40, 0.08);

    --cyan: #7dd8f7;
    --cyan-dim: #4dc9f6;
    --cyan-glow: rgba(77, 201, 246, 0.4);
    --jh-gold: #d4af37;
    --gold: var(--jh-gold);
    --gold-glow: rgba(212, 175, 55, 0.3);
    --green: #b6ffba;

    --text-primary: #8cb8cc;
    --text-bright: #b8dced;
    --text-heading: #7dd8f7;
    --text-subhead: #e8f4ff;

    /* Semantic tokens */
    --accent: var(--cyan);
    --accent-hover: var(--gold);
    --muted: #7a9aaa;
    --muted-light: #8aabb8;
    --border: rgba(77, 201, 246, 0.2);
    --shadow: rgba(77, 201, 246, 0.15);
    --focus: var(--cyan);

    /* Typography Scale */
    --text-xs: 0.8rem;
    --text-sm: 0.9rem;
    --text-base: 1.05rem;
    --text-lg: 1.2rem;
    --text-xl: 1.35rem;
    --text-2xl: 1.55rem;
    --text-3xl: 2.5rem;

    /* Spacing Scale */
    --space-xs: 0.375rem;
    --jh-space-sm: 0.75rem;
    --space-sm: var(--jh-space-sm);
    --jh-space-md: 1.25rem;
    --space-md: var(--jh-space-md);
    --space-lg: 1.75rem;
    --jh-space-xl: 2.5rem;
    --space-xl: var(--jh-space-xl);
    --jh-space-2xl: 4rem;
    --space-2xl: var(--jh-space-2xl);
}

/* ===========================================
   4. NAVIGATION
=========================================== */
/* The chrome renders in its own two faces and must not be metric-normalised
   against the host page's. openprose.html sets `font-size-adjust: ex-height`
   on body (it aligns Kecal against a mono); inherited into the bar, that
   rescales the font-size:0 the compact <900px .nav-title / .nav-right rely
   on and the full text reappears beside its own abbreviation. Reset it, and
   opt out of mobile text autosizing for the same reason. */
#nav, body > footer {
    font-size-adjust: none;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

#nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    background: rgba(2, 10, 18, 0.92);
    backdrop-filter: blur(8px);
    z-index: 1000;
    border-bottom: 1px solid rgba(77, 201, 246, 0.12);
    transform: translateY(-100%);
    transition: transform 0.25s ease;
    height: calc(40px + env(safe-area-inset-top));
    padding-top: env(safe-area-inset-top);
    overflow: visible;
}
#nav.visible { transform: translateY(0); }

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--jh-space-md);
    height: 100%;
}

/* Left side: shapes + name */
.nav-left {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    overflow: visible;
}

.nav-title {
    font-family: 'Raleway', sans-serif;
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--text-bright);
    text-decoration: none;
    letter-spacing: 0.1em;
    line-height: 1;
    margin: 0 0.4rem;
    white-space: nowrap;
}
.nav-title:hover { color: var(--jh-gold); }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    margin-right: -0.5rem;
}
.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: rgba(255, 255, 255, 0.95);
    margin: 4px 0;
    transition: transform 0.2s, opacity 0.2s;
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

/* Right side: section links */
.nav-right {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-right li {
    display: flex;
    align-items: flex-start;
    margin: 0;
}

.nav-right a {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: 500;
    text-decoration: none;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0 0.625rem;
    white-space: nowrap;
    transition: color 0.2s;
}
.nav-right a:hover, .nav-right a:focus { color: var(--jh-gold); }

.nav-separator {
    color: rgba(255, 255, 255, 0.25);
    font-size: 0.75rem;
    padding: 0 0.5rem;
    pointer-events: none;
}

/* ===========================================
   5. SHAPE NAVIGATION
=========================================== */

/* --- Hero shape-nav pill base --- */
.shape-nav {
    position: relative;
    display: flex;
    width: fit-content;
    gap: 0;
    align-items: center;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.35rem 0.5rem 0.4rem;
    border-radius: 2rem;
}

/* --- Shared shape-link base (hero) --- */
.shape-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    opacity: 0.4;
    transition: opacity 0.3s;
    text-decoration: none;
    width: 44px;
    min-height: 32px;
    overflow: visible;
}
.shape-link:hover { opacity: 0.8; }
.shape-link.active { opacity: 1; }

.shape-link .shape {
    width: 28px;
    height: 28px;
    min-width: 28px;
    min-height: 28px;
    fill: none;
    stroke: var(--cyan);
    stroke-width: 2;
    transition: all 0.2s ease;
}
.shape-link.active .shape {
    fill: rgba(77, 201, 246, 0.15);
    filter: drop-shadow(0 0 8px var(--cyan-glow));
}

/* --- Shape labels (in flow, not absolute) --- */
.shape-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    font-weight: 500;
    color: var(--cyan);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    line-height: 1;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.15s ease, height 0.15s ease, margin 0.15s ease;
    margin-top: 0;
    height: 0;
    overflow: hidden;
    pointer-events: none;
}
.shape-label-img {
    width: auto;
    filter: brightness(1.2);
    opacity: 0;
    transition: opacity 0.15s ease, height 0.15s ease, margin 0.15s ease;
    margin-top: 0;
    height: 0;
    overflow: hidden;
    pointer-events: none;
}

/* Ensure labels reset on non-hover (touch device fix) */
.shape-link:not(:hover) .shape-label,
.shape-link:not(:hover) .shape-label-img {
    opacity: 0;
}

/* Hero: on hover, shrink shapes to top, show labels */
.shape-nav .shape-link:hover .shape,
.shape-nav:hover .shape-link .shape {
    width: 18px;
    height: 18px;
    min-width: 18px;
    min-height: 18px;
}
.shape-nav .shape-link:hover .shape-label,
.shape-nav:hover .shape-link .shape-label {
    opacity: 1;
    height: auto;
    margin-top: 0.15rem;
}
.shape-nav .shape-link:hover .shape-label-img,
.shape-nav:hover .shape-link .shape-label-img {
    opacity: 1;
    height: 0.6rem;
    margin-top: 0.1rem;
}

/* --- Navbar shape overrides (compact) --- */
.nav-left .shape-link {
    width: 32px;
    height: 34px;
    opacity: 0.5;
    padding: 0 0.15rem;
    box-sizing: border-box;
    justify-content: center;
}
.nav-left .shape-link:hover { opacity: 0.85; }
.nav-left .shape-link.active { opacity: 1; }
.nav-left .shape-link .shape {
    width: 22px;
    height: 22px;
    min-width: 22px;
    min-height: 22px;
    fill: rgba(77, 201, 246, 0.1);
}
.nav-left .shape-link.active .shape {
    filter: drop-shadow(0 0 4px var(--cyan-glow));
}
/* Navbar: shrink shapes on hover to fit labels inside nav height */
.nav-left .shape-link:hover .shape {
    width: 14px;
    height: 14px;
    min-width: 14px;
    min-height: 14px;
}
.nav-left .shape-label {
    font-size: 0.55rem;
    margin-top: 0;
    height: 0;
    overflow: hidden;
}
.nav-left .shape-label-img {
    height: 0;
    margin-top: 0;
    overflow: hidden;
}
.nav-left .shape-link:hover .shape-label {
    opacity: 1;
    height: auto;
    margin-top: 0.1rem;
}
.nav-left .shape-link:hover .shape-label-img {
    opacity: 1;
    height: 0.45rem;
    margin-top: 0.08rem;
}

/* --- Secondary shapes (smaller: About, Services) --- */
.shape-link.secondary {
    width: 36px;
    opacity: 0.35;
}
.shape-link.secondary .shape {
    width: 22px;
    height: 22px;
    min-width: 22px;
    min-height: 22px;
    stroke-width: 1.5;
}
.shape-link.secondary:hover { opacity: 0.7; }
.shape-link.secondary.active { opacity: 0.9; }

/* Hero shape-nav: search utility icon — left of page shapes, right divider */
.shape-nav .shape-link.search-icon {
    margin-right: 0.15rem;
    padding-right: 0.35rem;
    border-right: 1px solid rgba(77, 201, 246, 0.1);
}

/* Hero: secondary/search shapes shrink on hover */
.shape-nav .shape-link.secondary:hover .shape,
.shape-nav:hover .shape-link.secondary .shape,
.shape-nav .shape-link.search-icon:hover .shape,
.shape-nav:hover .shape-link.search-icon .shape {
    width: 18px;
    height: 18px;
    min-width: 18px;
    min-height: 18px;
}

/* Navbar: secondary shapes (same size as primary) */
.nav-left .shape-link.secondary {
    width: 32px;
    opacity: 0.5;
}
.nav-left .shape-link.secondary:hover { opacity: 0.85; }
.nav-left .shape-link.secondary.active { opacity: 1; }
.nav-left .shape-link.secondary .shape {
    width: 22px;
    height: 22px;
    min-width: 22px;
    min-height: 22px;
}
.nav-left .shape-link.secondary:hover .shape {
    width: 14px;
    height: 14px;
    min-width: 14px;
    min-height: 14px;
}
.nav-left .shape-link.secondary .shape-label {
    font-size: 0.4rem;
}
/* Widen services shape to fit label */
.nav-left .shape-link.secondary[aria-label="Services"] {
    width: 38px;
}
/* Secondary shapes: show labels on hover (same as primary) */
.nav-left .shape-link.secondary:hover .shape-label {
    opacity: 1;
}

/* --- Nav search icon (inside .nav-left, first child, right divider) --- */
.nav-left .shape-link.search-icon {
    width: 32px;
    margin-right: 2px;
    padding-right: 6px;
    border-right: 1px solid rgba(77, 201, 246, 0.08);
}
.nav-left .shape-link.search-icon .shape {
    width: 22px;
    height: 22px;
    min-width: 22px;
    min-height: 22px;
    fill: none; /* search uses state-ring fill instead */
}
.nav-left .shape-link.search-icon:hover .shape {
    width: 14px;
    height: 14px;
    min-width: 14px;
    min-height: 14px;
}

/* ── Search state ring: engine indicator ── */
.search-icon .state-ring {
    stroke: var(--muted);
    fill: rgba(122, 154, 170, 0.1);
    opacity: 0.35;
    transition: stroke 0.3s, fill 0.3s, opacity 0.3s, filter 0.3s;
}
body[data-search-engine="webgpu-available"] .search-icon .state-ring {
    stroke: #4dc9f6;
    fill: rgba(77, 201, 246, 0.6);
    opacity: 0.7;
    animation: search-ring-pulse 3s ease-in-out infinite;
}
body[data-search-engine="webgpu-active"] .search-icon .state-ring {
    stroke: #4dc9f6;
    fill: rgba(77, 201, 246, 0.6);
    opacity: 1;
    filter: drop-shadow(0 0 3px rgba(77, 201, 246, 0.5));
}
body[data-search-engine="lmstudio"] .search-icon .state-ring {
    stroke: #c084fc;
    fill: rgba(192, 132, 252, 0.6);
    opacity: 1;
    filter: drop-shadow(0 0 3px rgba(192, 132, 252, 0.5));
}
body[data-search-engine="ollama"] .search-icon .state-ring {
    stroke: #fb923c;
    fill: rgba(251, 146, 60, 0.6);
    opacity: 1;
    filter: drop-shadow(0 0 3px rgba(251, 146, 60, 0.5));
}
body[data-search-engine="custom"] .search-icon .state-ring {
    stroke: #4ade80;
    fill: rgba(74, 222, 128, 0.6);
    opacity: 1;
    filter: drop-shadow(0 0 3px rgba(74, 222, 128, 0.5));
}
@keyframes search-ring-pulse {
    0%, 100% { filter: drop-shadow(0 0 1px rgba(77, 201, 246, 0.15)); opacity: 0.5; }
    50% { filter: drop-shadow(0 0 6px rgba(77, 201, 246, 0.5)); opacity: 0.85; }
}

/* ===========================================
   5a. TOUCH DEVICE OVERRIDES
   On touch (no fine pointer), labels show always — not hover-only.
   Must beat the .shape-link:not(:hover) rule that resets opacity to 0.
=========================================== */
@media (hover: none) and (pointer: coarse) {
    /* Hero shape-nav: icons only on touch — labels hidden, pill stays compact */
    .shape-nav .shape-link,
    .shape-nav .shape-link.secondary,
    .shape-nav .shape-link.search-icon {
        height: 32px;
        overflow: hidden;
        min-width: 40px;
        justify-content: center;
    }

    /* Keep shapes a clean consistent size */
    .shape-nav .shape-link .shape,
    .shape-nav .shape-link.secondary .shape,
    .shape-nav .shape-link.search-icon .shape {
        width: 20px; height: 20px;
        min-width: 20px; min-height: 20px;
    }

    /* Labels stay hidden on touch hero nav — icons are self-explanatory */
    .shape-nav .shape-link .shape-label,
    .shape-nav .shape-link .shape-label-img,
    .shape-nav .shape-link:not(:hover) .shape-label,
    .shape-nav .shape-link:not(:hover) .shape-label-img {
        opacity: 0 !important;
        height: 0 !important;
        margin: 0 !important;
        overflow: hidden !important;
    }

    /* Navbar: compact shapes, labels always visible */
    .nav-left .shape-link,
    .nav-left .shape-link.secondary,
    .nav-left .shape-link.search-icon {
        height: auto;
        overflow: visible;
        min-width: 32px;
    }
    .nav-left .shape-link .shape,
    .nav-left .shape-link.secondary .shape,
    .nav-left .shape-link.search-icon .shape {
        width: 12px; height: 12px;
        min-width: 12px; min-height: 12px;
    }
    .nav-left .shape-link .shape-label,
    .nav-left .shape-link .shape-label-img,
    .nav-left .shape-link.secondary .shape-label,
    .nav-left .shape-link:not(:hover) .shape-label,
    .nav-left .shape-link:not(:hover) .shape-label-img {
        opacity: 1 !important;
    }
}

/* ===========================================
   10. FOOTER
=========================================== */
body > footer {
    background: transparent; /* fixed fish canvas shows through */
    color: var(--text-primary);
    text-align: center;
    padding: var(--jh-space-2xl) var(--jh-space-md) var(--jh-space-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 10;
}

/* Footer glass oval — mirrors hero-oval aesthetic */
/* Footer itself is transparent; re-enable clicks only on the oval */
body > footer { pointer-events: none; }
.footer-oval { pointer-events: auto; }

.footer-oval {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;

    /* Squished ellipse: wide, short — same approach as hero-oval */
    width: fit-content;
    min-width: 260px;
    max-width: 420px;
    padding: 1.2rem 3rem 1rem;

    background: rgba(2, 10, 18, 0.55);
    backdrop-filter: blur(8px) saturate(1.1);
    -webkit-backdrop-filter: blur(8px) saturate(1.1);
    border: 1px solid rgba(77, 201, 246, 0.18);
    border-radius: 50%;
    /* Safari fix: use drop-shadow instead of box-shadow for non-square border-radius */
    filter: drop-shadow(0 0 1px rgba(77, 201, 246, 0.06)) drop-shadow(0 8px 40px rgba(0, 0, 0, 0.55));
    position: relative;
}

/* Inset highlight via pseudo-element (can't use inset with drop-shadow) */
.footer-oval::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: linear-gradient(to bottom, rgba(77, 201, 246, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.footer-title {
    font-family: 'Raleway', sans-serif;
    font-size: var(--text-lg);
    font-weight: 300;
    letter-spacing: 0.1em;
    color: var(--text-bright);
    margin-bottom: 0.1rem;
}
.footer-subtitle {
    font-size: var(--text-xs);
    color: var(--muted);
    margin-bottom: 0.4rem;
    letter-spacing: 0.05em;
}
.footer-signature {
    margin: 0.1rem 0 0.3rem;
}
.footer-signature img {
    height: 2em;
    opacity: 0.7;
    filter: drop-shadow(0 1px 6px rgba(0, 0, 0, 0.7));
}
.footer-copyright {
    font-size: var(--text-xs);
    color: var(--muted);
    margin-bottom: 0;
    opacity: 0.8;
}
.footer-github {
    font-size: var(--text-xs);
    margin: 0.15rem 0 0;
    opacity: 0.7;
}
/* Reset global p max-width inside footer oval */
.footer-oval p {
    max-width: 100%;
    white-space: nowrap;
}
body > footer a {
    color: var(--cyan);
    text-decoration: underline;
    text-underline-offset: 2px;
    text-decoration-color: rgba(212, 175, 55, 0.5);
}
body > footer a:hover {
    color: var(--jh-gold);
    text-decoration-color: var(--jh-gold);
}
body > footer .version {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    font-weight: 400;
    color: var(--muted);
    opacity: 0.5;
    margin-top: 0.25rem;
    letter-spacing: 0.05em;
    text-align: center;
    line-height: 1.6;
    white-space: normal; /* allow <br> to work */
}

/* ===========================================
   CHROME RESPONSIVE
   Moved here from shared.css section 12 so the chrome travels whole.
=========================================== */
@media (max-width: 900px) {
    .nav-title {
        font-size: 0;
        line-height: 0;
        display: inline-flex;
        align-items: center;
    }
    .nav-title::after {
        content: attr(data-short);
        font-family: 'Raleway', sans-serif;
        font-size: 1rem;
        font-weight: 300;
        letter-spacing: 0.05em;
        line-height: 1;
        color: var(--text-primary);
    }
    .nav-title:hover::after { color: var(--jh-gold); }

    /* Hide full link text, show 2-char abbreviation */
    .nav-right a {
        font-size: 0;
        line-height: 0;
        padding: 0 0.4rem;
        display: inline-flex;
        align-items: center;
    }
    .nav-right a::after {
        content: attr(data-short);
        font-family: 'JetBrains Mono', monospace;
        font-size: 0.6rem;
        font-weight: 500;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        line-height: 1;
        color: var(--muted);
    }
    .nav-right a:hover::after,
    .nav-right a:focus::after { color: var(--jh-gold); }

    /* Hamburger hidden at tablet — abbreviated links visible */
    .nav-toggle { display: none; }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
        position: relative;
        z-index: 1001;
    }
    .nav-right {
        position: absolute;
        top: 34px;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgb(2, 10, 18);
        backdrop-filter: blur(8px);
        flex-direction: column;
        align-items: stretch;
        padding: 0.5rem 0;
        border-bottom: 1px solid rgba(77, 201, 246, 0.1);
        display: none;
    }
    .nav-right.open { display: flex; }
    .nav-right li { height: auto; }
    /* Show full link text in dropdown, not abbreviations */
    .nav-right a {
        font-size: 0.8rem;
        line-height: 1.4;
        padding: 0.4rem 1.25rem;
        display: block;
        color: var(--text-primary);
    }
    .nav-right a::after { content: none; }
    .nav-right a:hover, .nav-right a:focus { color: var(--jh-gold); }

    #nav { height: 36px; }
    .nav-inner { padding: 0 var(--jh-space-sm); }

    .footer-oval {
        min-width: 0;
        width: min(80vw, 300px);
        padding: 1rem 1.5rem 0.9rem;
    }
}

@media (max-width: 480px) {
    #nav { height: 34px; }
    /* Compact shapes for small screens */
    .nav-left .shape-link { width: 24px; height: 28px; padding: 0 0.05rem; }
    .nav-left .shape-link .shape { width: 16px; height: 16px; min-width: 16px; min-height: 16px; }
    .nav-left .shape-link.secondary { width: 24px; }
    .nav-left .shape-link.secondary .shape { width: 16px; height: 16px; min-width: 16px; min-height: 16px; }
    .nav-left { gap: 0.15rem; }
    .nav-title::after { font-size: 0.8rem; }
    .nav-right a { padding: 0 0.25rem; }
    .nav-right a::after { font-size: 0.5rem; }
}

@media print {
    #nav { display: none; }
}