/* Base + Landing Header (merged) */

/* Base */
*, *:after, *:before { -webkit-box-sizing: border-box; box-sizing: border-box; }

/* Theme tokens */
:root {
    --midnight: #0b132b;
    --midnight-soft: #1a2340;
    --sand: #f5ede1;
    --sand-light: #fbf3e6;
    --crimson: #dc143c;
    --red: #d32f2f;
    --silver: #dfe3e6;
    --ink: #23272a;
    --textLight: #eef2f6;
    --offwhite: #f6f8fb;
    --pale-blue: #eaf2ff;
    --heading-color: var(--red);
    /* Nav UI tokens */
    --nav-color: #ffffff;
    --nav-bg: rgba(15, 18, 27, 0.5);
    --nav-border: rgba(255, 255, 255, 0.2);
    /* CTA buttons */
    --cta-color: #2b6cb0;       /* accessible blue */
    --cta-hover: #245a94;       /* slightly darker on hover */
    /* Overlay tokens */
    --overlay-bg: rgba(15,18,27,0.45);
    --overlay-panel-bg: linear-gradient(180deg, var(--offwhite) 0%, var(--sand-light) 100%);
}

body {
    background: #fff;
    color: #383a3c;
    font-weight: 400;
    font-size: 1em;
    line-height: 1.25;
    font-family: 'Raleway', Calibri, Arial, sans-serif;
}

html { scroll-behavior: smooth; }

a, button {
	outline: none;
}

a {
	color: #566473;
	text-decoration: none;
}

a:hover, a:focus {
	color: #34495e;
}

section {
    padding: 1em;
    text-align: center;
}

/* Content sections: shared layout */
.section-block {
    padding: clamp(2.5rem, 4vw, 4rem) 1rem;
    position: relative; /* allow absolute-positioned scroll indicator */
}

.section-block .section-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: clamp(1.25rem, 3vw, 2.5rem);
    align-items: center;
    text-align: left;
}

.section-block .section-media {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0;
}

.section-block .section-media > * { margin: 0; }

.section-block .section-media img {
    display: block;
    max-width: clamp(120px, 30vw, 260px);
    max-height: clamp(60px, 12vw, 120px);
    width: auto;
    height: auto;
    margin: 0.25rem 0 0.5rem;
    filter: drop-shadow(0 8px 20px rgba(0,0,0,0.25));
    object-fit: contain;
}

.section-block .section-media picture { display: block; }


/* Larger portrait in About section; keep proportions */
.section-about .section-media img {
    max-width: clamp(180px, 32vw, 340px);
    max-height: clamp(140px, 24vw, 260px);
}

/* R&D image: scale similar to About portrait */
.section-rnd .section-media img {
    max-width: clamp(180px, 32vw, 340px);
    max-height: clamp(140px, 24vw, 260px);
}



/* Hide placeholder when About section has a real photo */
.section-about .logo-placeholder { display: none; }

.section-block .logo-placeholder {
    width: clamp(120px, 30vw, 260px);
    aspect-ratio: 1 / 1;
    border: 2px solid currentColor;
    opacity: 0.25;
    border-radius: 12px;
    margin: 0.25rem 0 0.5rem;
}

/* Credential + social buttons under portrait */
.section-about .cred-row {
    margin-top: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem;
}
.btn-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    border: 1px solid rgba(0,0,0,0.15);
    color: inherit;
    text-decoration: none;
    background: rgba(255,255,255,0.6);
    transition: background-color .2s ease, border-color .2s ease, transform .15s ease;
    font-size: 0.85rem;
}
.btn-chip:hover, .btn-chip:focus { 
    background: rgba(255,255,255,0.85); 
    border-color: rgba(0,0,0,0.25);
    transform: translateY(1px);
}
.btn-chip img { height: 18px; width: auto; display: block; }

/* Even smaller padding for icon-only chip (WES) */
.btn-chip.icon-only { padding: 0.2rem 0.35rem; }

/* Social icons under portrait */
.section-block .social-row {
    margin-top: 0.5rem;
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}
.social-btn {
    width: 40px;
    height: 40px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--nav-color);
    background-color: var(--nav-bg);
    border: 1px solid var(--nav-border);
    box-shadow: 0 6px 18px rgba(0,0,0,0.18);
    backdrop-filter: saturate(120%) blur(6px);
    -webkit-backdrop-filter: saturate(120%) blur(6px);
    text-decoration: none;
    transition: transform .15s ease, background-color .2s ease, border-color .2s ease, color .2s ease;
}
.social-btn:hover, .social-btn:focus { transform: translateY(1px); }
.social-btn i { font-size: 18px; line-height: 1; }

.section-block h2 {
    margin: 0 0 0.6rem;
    font-size: clamp(1.4rem, 3vw, 2rem);
    color: var(--heading-color);
}

.section-block .tagline {
    font-weight: 700;
    letter-spacing: 0.01em;
    margin: 0.1rem 0 0.1rem;
}

.section-block .lead {
    font-size: 1.05rem;
    line-height: 1.6;
    opacity: 0.95;
    margin-top: 0.1rem;
}

.section-block .section-content {
    font-size: 1rem;
    line-height: 1.7;
}

@media (max-width: 900px) {
    .section-block .section-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .section-block .section-media { align-items: center; }
    .section-block .section-content { text-align: left; }
}

/* Section themes */
.section-about {
    background: var(--sand);
    color: #2a2f33;
}

.section-rnd {
    background: #ffffff;
    color: var(--ink);
}
.section-rnd .section-inner {
    grid-template-columns: 1fr;
    align-items: stretch;
}
.project-layout { display: grid; grid-template-columns: 1fr; gap: clamp(1.5rem, 3vw, 2.5rem); }
.project-intro {
    grid-column: 1 / -1;
    text-align: center;
    max-width: 840px;
    margin: 0 auto;
}
.project-subtitle {
    margin: 0.35rem 0 0;
    font-size: 1.05rem;
    line-height: 1.6;
}
.project-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(280px, 1fr));
    gap: clamp(1rem, 2vw, 1.5rem);
}
.project-grid .project-card:nth-child(odd) { justify-self: stretch; }
.project-grid .project-card:nth-child(even) { justify-self: stretch; }
@media (max-width: 760px) {
  .project-grid { grid-template-columns: 1fr; }
}
.project-card {
    background: #fff;
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    padding: clamp(1rem, 2vw, 1.25rem);
}
.project-card h3 { margin: 0 0 0.35rem; }
.project-card__lede { margin: 0 0 0.75rem; line-height: 1.5; }
.project-card ul { margin: 0; padding-left: 1.1rem; line-height: 1.5; }

.section-consulting {
    background: linear-gradient(180deg, var(--offwhite) 0%, var(--sand-light) 100%);
    color: var(--ink);
}
.section-consulting .section-inner {
    grid-template-columns: repeat(2, minmax(0,1fr));
    align-items: flex-start;
}
.section-consulting__intro { grid-column: 1 / -1; }
.section-consulting__how {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: left;
    gap: 0.35rem;
    max-width: 720px;
    margin: 0 auto;
    padding: clamp(0.9rem, 2vw, 1.25rem);
    border: 1px solid rgba(0,0,0,0.07);
    border-radius: 12px;
    background: rgba(255,255,255,0.65);
    box-shadow: 0 8px 24px rgba(0,0,0,0.05);
}
.section-consulting__how h3 { text-align: center; margin: 0; }
.section-consulting__how ul { margin: 0.35rem 0 0.75rem; padding-left: 1.2rem; }
.section-consulting__cta { grid-column: 1 / -1; text-align: center; }
.section-consulting .section-content h4 { margin: 0.75rem 0 0.25rem; }
.section-consulting .section-content ul { margin: 0.35rem 0 0.9rem; padding-left: 1.1rem; }
.section-consulting__cols {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: clamp(1rem, 2vw, 1.5rem);
    padding: clamp(1rem, 2vw, 1.4rem);
    border-radius: 14px;
    background: linear-gradient(180deg, rgba(255,255,255,0.78) 0%, rgba(245,247,250,0.62) 100%);
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 10px 28px rgba(0,0,0,0.06);
}
@media (max-width: 900px) {
    .section-consulting__cols {
        grid-template-columns: 1fr;
    }
}
.section-consulting__col-title {
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 10px;
    padding: 0.55rem 0.75rem;
    margin-bottom: 0.6rem;
    box-shadow: 0 6px 18px rgba(0,0,0,0.07);
}
.section-consulting__col h3 { margin: 0; color: #44505f; }
.section-consulting__item {
    padding: 0.75rem 0.9rem;
    border-radius: 12px;
    border: 1px solid rgba(0,0,0,0.035);
    box-shadow: 0 6px 18px rgba(0,0,0,0.03);
    margin-bottom: 0.6rem;
    background: rgba(248, 244, 237, 0.9); /* soft sand */
}
.section-consulting__item:nth-of-type(even) {
    background: rgba(235, 243, 238, 0.9); /* soft sage */
}

.section-opensci {
    background: linear-gradient(90deg, var(--offwhite) 0%, var(--pale-blue) 100%);
    color: var(--ink);
}
.opensci-layout {
    display: block;
}
.section-opensci .section-inner {
    grid-template-columns: 1fr;
}
.opensci-closing {
    font-style: italic;
    opacity: 0.9;
    margin-top: 0.8rem;
}

/* Header */
.large-header {
    position: relative;
    width: 100%;
    background: #333;
    overflow: hidden;
    background-size: cover;
    background-position: center center;
    z-index: 1;
    /* Fallback first for older browsers */
    background-image: url('../img/om-header.png');
    /* Prefer modern WebP with PNG fallback, include 2x for high-DPI */
    background-image: -webkit-image-set(
        url('../img/om-header.webp') type('image/webp') 1x,
        url('../img/om-header4K.webp') type('image/webp') 2x,
        url('../img/om-header.png') type('image/png') 1x,
        url('../img/om-header4K.png') type('image/png') 2x
    );
    background-image: image-set(
        url('../img/om-header.webp') type('image/webp') 1x,
        url('../img/om-header4K.webp') type('image/webp') 2x,
        url('../img/om-header.png') type('image/png') 1x,
        url('../img/om-header4K.png') type('image/png') 2x
    );
}

.page-header {
    position: relative;
    width: 100%;
    height: clamp(200px, 32vh, 320px);
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    /* Fallback */
    background-image: url('../img/om-header.png');
    background-image: -webkit-image-set(
        url('../img/om-header.webp') type('image/webp') 1x,
        url('../img/om-header4K.webp') type('image/webp') 2x,
        url('../img/om-header.png') type('image/png') 1x,
        url('../img/om-header4K.png') type('image/png') 2x
    );
    background-image: image-set(
        url('../img/om-header.webp') type('image/webp') 1x,
        url('../img/om-header4K.webp') type('image/webp') 2x,
        url('../img/om-header.png') type('image/png') 1x,
        url('../img/om-header4K.png') type('image/png') 2x
    );
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-shadow: 0 2px 10px rgba(0,0,0,0.4);
}
.page-header .page-title {
    margin: 0;
    padding: 0 1rem;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 800;
}

/* Generic page content layout */
.page-content {
    max-width: 900px;
    margin: 0 auto;
    padding: clamp(1.5rem, 4vw, 2.5rem) 1rem;
}
.page-content h1, .page-content h2, .page-content h3 { color: var(--heading-color); }
.page-content img { max-width: 100%; height: auto; }

/* Progressive blur-up placeholder over the header background */
.large-header::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url('../img/om-header.webp');
    background-size: cover;
    background-position: center;
    filter: blur(16px);
    transform: scale(1.06); /* avoid edge transparency from blur */
    opacity: 1;
    transition: opacity 600ms ease;
    z-index: 0;
}

/* Once the page is ready, fade out the blurred overlay */
.large-header.bg-loaded::before {
    opacity: 0;
}

.main-title {
    position: absolute;
    margin: 0;
    padding: 0 1rem;
    color: #f9f1e9;
    text-align: center;
    top: 50%;
    left: 50%;
    -webkit-transform: translate3d(-50%,-50%,0);
    transform: translate3d(-50%,-50%,0);
    font-family: 'Montserrat', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: 0.01em;
    font-size: clamp(2rem, 5.2vw, 3.8rem);
    text-shadow: 0 4px 16px rgba(0,0,0,0.45);
    max-width: min(90vw, 28ch);
    white-space: nowrap;
    overflow-wrap: normal;
}


.main-title .thin {
    display: block;
    margin-top: 0.75rem;
    font-weight: 400;
    font-size: clamp(1.05rem, 2.4vw, 1.35rem);
    line-height: 1.55;
    letter-spacing: 0;
    text-shadow: 0 2px 10px rgba(0,0,0,0.45);
    white-space: normal;
}



/* Scroll indicator (arrow) */
.scroll-indicator {
    position: absolute;
    bottom: 1.25rem;
    left: 50%;
    transform: translateX(-50%);
    color: #f9f1e9;
    opacity: 0.9;
    text-decoration: none;
    z-index: 2;
}

.scroll-indicator svg {
    width: 28px;
    height: 28px;
    stroke: currentColor;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2.5;
    animation: floatY 2.4s ease-in-out infinite;
}

.scroll-indicator:hover,
.scroll-indicator:focus {
    opacity: 1;
    transform: translateX(-50%) translateY(1px);
}

@keyframes floatY {
    0%, 100% { transform: translateY(-2px); }
    50% { transform: translateY(2px); }
}

/* Mobile nav (hamburger) */
.nav-toggle {
    position: fixed;
    top: 0.75rem;
    left: 0.75rem;
    width: 42px;
    height: 42px;
    display: inline-flex;
    flex-direction: column;
    gap: 5px;
    align-items: center;
    justify-content: center;
    color: var(--nav-color);
    background-color: var(--nav-bg);
    border: 1px solid var(--nav-border);
    cursor: pointer;
    z-index: 3;
    border-radius: 8px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.28);
    backdrop-filter: saturate(120%) blur(6px);
    -webkit-backdrop-filter: saturate(120%) blur(6px);
    transition: background-color .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.cred-toggle {
    position: fixed;
    top: 0.75rem;
    right: 0.75rem;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    min-height: 42px;
    padding: 0.55rem 0.8rem;
    max-width: min(72vw, 460px);
    color: var(--nav-color);
    background-color: var(--nav-bg);
    border: 1px solid var(--nav-border);
    border-radius: 10px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.28);
    backdrop-filter: saturate(120%) blur(6px);
    -webkit-backdrop-filter: saturate(120%) blur(6px);
    font-weight: 800;
    font-size: 0.82rem;
    letter-spacing: .01em;
    text-align: center;
    cursor: pointer;
    z-index: 3;
    transition: background-color .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease, transform .2s ease, opacity .3s ease;
}
.cred-toggle:hover,
.cred-toggle:focus {
    transform: translateY(1px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.32);
}
.cred-label {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    line-height: 1.25;
    text-align: center;
}
.cred-line {
    margin: 0;
    padding: 0.15rem 0.4rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.08);
}
.cred-line--accent {
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.16);
}

html.cred-open .cred-toggle {
    background-color: var(--cta-color);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 8px 20px rgba(0,0,0,0.32), 0 0 0 2px rgba(255,255,255,0.18) inset;
}

html.cred-fade:not(.cred-open) .cred-toggle {
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
}

/* Skip link (a11y) */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: #000;
    color: #fff;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    z-index: 1000;
}
.skip-link:focus {
    left: auto;
    right: 0.75rem;
    top: 0.75rem;
}

/* Closing band CTA */
.closing-band {
    padding: clamp(2rem, 5vw, 4rem) 1rem;
    text-align: center;
    background: #ffffff;
    color: var(--ink);
}
.closing-band h2 {
    margin: 0 0 0.5rem;
    color: var(--heading-color);
}
.closing-band .cta-row {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 0.75rem;
}
.closing-band .btn {
    background: var(--cta-color);
    color: #fff;
    padding: 0.6rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
    transition: background-color .2s ease, box-shadow .2s ease, transform .15s ease;
}
.closing-band .btn:hover,
.closing-band .btn:focus {
    /* Subtle change on hover for feedback */
    background-color: var(--cta-hover);
    box-shadow: 0 6px 16px rgba(0,0,0,0.18);
    transform: translateY(1px);
}

/* Read more buttons inside media column */
.readmore-btn {
    display: inline-block;
    margin-top: 0.5rem;
    background: var(--cta-color);
    color: #fff;
    padding: 0.5rem 0.9rem;
    border-radius: 8px;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
    transition: background-color .2s ease, box-shadow .2s ease, transform .15s ease;
}
.readmore-btn:hover,
.readmore-btn:focus { background: var(--cta-hover); color: #e6e6e6; box-shadow: 0 6px 16px rgba(0,0,0,0.18); transform: translateY(1px); }

.closing-band .link {
    color: inherit;
    text-decoration: underline;
}

/* Footer */
.site-footer {
    background: var(--offwhite);
    color: var(--ink);
    padding: clamp(2rem, 5vw, 4rem) 1rem;
}

/* Fullscreen overlay (site-wide panels) */
.overlay[hidden] { display: none !important; }
.overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: grid;
    background: var(--overlay-bg);
    backdrop-filter: saturate(120%) blur(6px);
    -webkit-backdrop-filter: saturate(120%) blur(6px);
}
.overlay__panel {
    align-self: stretch;
    justify-self: stretch;
    max-width: min(1100px, 94vw);
    height: 92vh;
    margin: 4vh auto;
    background: var(--overlay-panel-bg);
    color: var(--ink);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.35);
    display: grid;
    grid-template-rows: auto 1fr;
    overflow: hidden;
}
.overlay__header { position: relative; padding: 1rem 3.25rem 1rem 1.25rem; border-bottom: 1px solid rgba(0,0,0,0.08); }
.overlay__title { margin: 0; font-size: clamp(1.5rem, 3.2vw, 2.25rem); font-weight: 800; color: var(--heading-color); }
.overlay__close {
    position: absolute; right: 0.75rem; top: 0.5rem; width: 40px; height: 40px;
    display: inline-flex; align-items: center; justify-content: center;
    color: var(--nav-color); background-color: var(--nav-bg); border: 1px solid var(--nav-border); border-radius: 999px;
}
.overlay__body { overflow: auto; padding: clamp(1rem, 3vw, 2rem); }
.overlay__body p { line-height: 1.7; }

html.overlay-open, body.overlay-open { overflow: hidden; }

/* Newsletter overlay form */
.nl-form { max-width: 640px; margin: 0 auto; }
.nl-form label { display: block; font-weight: 800; letter-spacing: .03em; margin-bottom: .35rem; color: var(--heading-color); text-transform: uppercase; font-size: .9rem; }
.nl-form input[type="email"] {
  width: 100%;
  padding: .8rem .9rem;
  border-radius: 8px;
  border: 1px solid rgba(0,0,0,0.08);
  background: #f1f2f4;
  outline: none;
}
.nl-form input[type="email"]:focus { border-color: rgba(0,0,0,0.18); box-shadow: 0 0 0 3px rgba(43,108,176,.12); }
.nl-form .note { margin: .35rem 0 1rem; opacity: .7; font-size: .95rem; }
.nl-form .nl-btn {
  display: block; width: 100%;
  background: var(--cta-color); color: #fff;
  border: none; border-radius: 8px; padding: .9rem 1rem;
  text-transform: uppercase; letter-spacing: .04em; font-weight: 800;
  box-shadow: 0 6px 16px rgba(0,0,0,.18);
  transition: background-color .2s ease, transform .15s ease, box-shadow .2s ease;
}
.nl-form .nl-btn:hover, .nl-form .nl-btn:focus { background: var(--cta-hover); transform: translateY(1px); box-shadow: 0 8px 20px rgba(0,0,0,.22); }

/* Contact page form */
.contact-form { max-width: 720px; margin: 0 auto; }
.contact-form .field { margin: 0 0 1rem; }
.contact-form label { display:block; font-weight:800; letter-spacing:.03em; margin-bottom:.35rem; color: var(--heading-color); text-transform: uppercase; font-size:.9rem; }
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form select,
.contact-form textarea {
  width:100%; padding:.8rem .9rem; border-radius:8px; border:1px solid rgba(0,0,0,0.08); background:#f1f2f4; outline:none;
}
.contact-form select { appearance:auto; -webkit-appearance: none; -moz-appearance: none; background-image: none; }
.contact-form textarea { resize: vertical; min-height: 140px; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { border-color: rgba(0,0,0,0.18); box-shadow: 0 0 0 3px rgba(43,108,176,.12); }
.contact-form .hp { position:absolute; left:-9999px; }
.contact-form .contact-btn { display:inline-block; background: var(--cta-color); color:#fff; padding:.6rem 1rem; border:none; border-radius:8px; font-weight:800; letter-spacing:.03em; cursor:pointer; box-shadow:0 6px 16px rgba(0,0,0,.18); transition: background-color .2s ease, transform .15s ease, box-shadow .2s ease; }
.contact-form .contact-btn:hover,.contact-form .contact-btn:focus { background: var(--cta-hover); transform: translateY(1px); box-shadow:0 8px 20px rgba(0,0,0,.22); }
.contact-form .contact-note { margin-top:.5rem; opacity:.7; font-size:.95rem; }

/* Inline link tooltips (omlinks) */
.omtip { position: absolute; inset: auto auto auto auto; z-index: 1200; pointer-events: none; }
.omtip__panel {
  background: var(--overlay-panel-bg);
  color: var(--ink);
  border-radius: 10px;
  box-shadow: 0 12px 40px rgba(0,0,0,.35);
  max-width: min(420px, 80vw);
  padding: .75rem .9rem;
}
.omtip__arrow { position: absolute; width: 14px; height: 14px; transform: rotate(45deg); background: var(--overlay-panel-bg); box-shadow: -4px 4px 10px rgba(0,0,0,.15); }
.omtip h3 { margin: 0 0 .25rem; font-weight: 800; color: var(--heading-color); font-size: 1.05rem; }
.omtip p { margin: .25rem 0; line-height: 1.5; }
.omtip img { max-width: 80px; height: auto; float: left; margin: .15rem .6rem .3rem 0; border-radius: 6px; }
.omtip a { color: #2b6cb0; text-decoration: underline; pointer-events: auto; }

a[data-omlink] { position: relative; }
a[data-omlink]:hover, a[data-omlink]:focus { outline: none; }
.site-footer .cols {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
}
.site-footer h3 {
    margin: 0 0 0.5rem;
    color: var(--heading-color);
    font-size: 1.05rem;
}
.site-footer p { margin: 0; line-height: 1.6; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 0.25rem 0; }
.site-footer a { color: inherit; text-decoration: none; }
.site-footer a:hover, .site-footer a:focus { text-decoration: underline; }
.site-footer .fineprint {
    max-width: 1100px;
    margin: 1rem auto 0;
    padding-top: 1rem;
    border-top: 1px solid rgba(0,0,0,0.08);
    text-align: center;
    font-size: 0.95rem;
    opacity: 0.8;
}

@media (max-width: 900px) {
    .site-footer .cols { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 560px) {
    .site-footer .cols { grid-template-columns: 1fr; }
}

/* Full-screen sections in landscape: match hero height */
@media (orientation: landscape) {
    .section-about.section-block,
    .section-consulting.section-block,
    .section-rnd.section-block,
    .section-opensci.section-block {
        min-height: 100vh;   /* fallback */
        min-height: 100svh;  /* modern stable viewport unit */
        display: grid;
        align-items: center; /* vertically center inner grid */
    }
}

/* Show scroll indicator in content sections only in landscape */
/* Section-level scroll indicators removed; keep only hero indicator */

.nav-toggle:focus-visible {
    outline: 2px solid rgba(249,241,233,0.85);
    outline-offset: 2px;
}

.cred-toggle:focus-visible {
    outline: 2px solid rgba(249,241,233,0.85);
    outline-offset: 2px;
}

.nav-toggle .bar {
    display: block;
    width: 22px;
    height: 2px;
    background-color: currentColor;
    border-radius: 1px;
    transition: transform .25s ease, opacity .2s ease;
}

/* spacing handled by gap above */

html.nav-open .nav-toggle .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
html.nav-open .nav-toggle .bar:nth-child(2) { opacity: 0; }
html.nav-open .nav-toggle .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.site-menu[hidden] { display: none !important; }

.site-menu {
    position: fixed;
    top: 3.25rem;
    left: 0.75rem;
    min-width: 220px;
    padding: 0.5rem;
    background: rgba(0,0,0,0.45);
    color: #f9f1e9;
    border-radius: 12px;
    backdrop-filter: saturate(120%) blur(6px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.35);
    z-index: 3;
}

/* Nav color scheme when over light backgrounds */
html.nav-scheme-light {
    --nav-color: #1f2a44;
    --nav-bg: rgba(255, 255, 255, 0.84);
    --nav-border: rgba(0,0,0,0.12);
}

.site-menu ul { list-style: none; margin: 0; padding: 0; }
.site-menu li { margin: 0; }
.site-menu a {
    display: block;
    padding: 0.6rem 0.75rem;
    color: #f9f1e9;
    text-decoration: none;
    border-radius: 8px;
}
.site-menu a:hover, .site-menu a:focus {
    background-color: rgba(255,255,255,0.08);
}
.site-menu a.is-active {
    background-color: rgba(255,255,255,0.16);
}

.cred-panel {
    position: fixed;
    top: 3.5rem;
    right: 0.75rem;
    max-width: min(360px, 90vw);
    background: var(--nav-bg);
    color: var(--nav-color);
    border: 1px solid var(--nav-border);
    border-radius: 12px;
    box-shadow: 0 14px 34px rgba(0,0,0,0.28);
    backdrop-filter: saturate(120%) blur(6px);
    -webkit-backdrop-filter: saturate(120%) blur(6px);
    z-index: 4;
    animation: cred-drop 220ms ease;
    transform-origin: top right;
}
.cred-panel__inner {
    position: relative;
    padding: 1rem 1.1rem;
}
.cred-panel h3 {
    margin: 0 0 0.35rem;
    font-size: 1rem;
    color: var(--heading-color);
}
.cred-panel p {
    margin: 0 0 0.45rem;
    line-height: 1.5;
}
.cred-panel__close {
    position: absolute;
    top: 0.35rem;
    right: 0.35rem;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    border: 1px solid var(--nav-border);
    background: var(--nav-bg);
    color: var(--nav-color);
    cursor: pointer;
    transition: background-color .2s ease, border-color .2s ease, transform .15s ease;
}
.cred-panel__close:hover,
.cred-panel__close:focus {
    transform: translateY(1px);
    background: rgba(255,255,255,0.16);
}
@keyframes cred-drop {
    from { opacity: 0; transform: translateY(-6px) scale(0.99); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
/* Back to top */
/* Optional dark scheme variant for CTAs */
.closing-band[data-scheme="dark"] {
    background: var(--midnight-soft);
    color: var(--textLight);
}
.closing-band[data-scheme="dark"] .btn {
    background: #f6f8fb;
    color: #1f2a44;
}
.closing-band[data-scheme="dark"] .btn:hover,
.closing-band[data-scheme="dark"] .btn:focus {
    background: #e8eef9;
}