/* ============================================================
   VitalyxBio — Design System
   Dark cyan-on-near-black, scientific/pharma aesthetic.
   ============================================================ */

:root {
    --vbio-bg:           #07101A;
    --vbio-bg-2:         #0B1721;
    --vbio-surface:      #0F1E2B;
    --vbio-surface-2:    #15293A;
    --vbio-border:       #1E3447;
    --vbio-border-hi:    #2A4A66;
    --vbio-cyan:         #3DE0E0;
    --vbio-cyan-2:       #6FF0F0;
    --vbio-cyan-soft:    rgba(61, 224, 224, 0.15);
    --vbio-cyan-glow:    0 0 24px rgba(61, 224, 224, 0.35);
    --vbio-cyan-glow-lg: 0 0 60px rgba(61, 224, 224, 0.18);
    --vbio-text:         #FFFFFF;
    --vbio-text-muted:   #A8BCC8;
    --vbio-text-dim:     #6B8090;
    --vbio-danger:       #FF6B7A;

    --vbio-font:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --vbio-mono:         'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

    --vbio-r:            6px;
    --vbio-r-lg:         12px;
    --vbio-container:    1200px;
    --vbio-gutter:       clamp(16px, 4vw, 32px);
    --vbio-section-y:    clamp(64px, 9vw, 128px);

    --vbio-ease:         cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ----- Base reset over Astra ------------------------------------------ */
body.vbio-theme,
body.vbio-theme.ast-theme-transparent-header,
body.vbio-theme #page,
body.vbio-theme .site,
body.vbio-theme .site-content {
    background: var(--vbio-bg);
    color: var(--vbio-text);
    font-family: var(--vbio-font);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.vbio-theme {
    background-image:
        radial-gradient(ellipse at top, rgba(61, 224, 224, 0.05), transparent 60%),
        radial-gradient(ellipse at bottom right, rgba(61, 224, 224, 0.03), transparent 50%);
    background-attachment: fixed;
}

body.vbio-theme h1,
body.vbio-theme h2,
body.vbio-theme h3,
body.vbio-theme h4,
body.vbio-theme h5,
body.vbio-theme h6 {
    font-family: var(--vbio-font);
    color: var(--vbio-text);
    font-weight: 800;
    letter-spacing: 0.02em;
    line-height: 1.1;
    margin: 0 0 0.6em;
}

body.vbio-theme a {
    color: var(--vbio-cyan);
    text-decoration: none;
    transition: color 160ms var(--vbio-ease);
}
body.vbio-theme a:hover { color: var(--vbio-cyan-2); }

body.vbio-theme img { max-width: 100%; height: auto; display: block; }

/* ----- Layout helpers ------------------------------------------------- */
.vbio-container {
    width: 100%;
    max-width: var(--vbio-container);
    margin: 0 auto;
    padding: 0 var(--vbio-gutter);
    box-sizing: border-box;
}

.vbio-section          { padding: var(--vbio-section-y) 0; }
.vbio-section--alt     { background: var(--vbio-bg-2); }
.vbio-center           { text-align: center; }
.vbio-h1               { font-size: clamp(2.25rem, 5.5vw, 4.25rem); text-transform: uppercase; }
.vbio-h2               { font-size: clamp(1.75rem, 3.5vw, 2.75rem); text-transform: uppercase; margin-bottom: 0.8em; }
.vbio-h3               { font-size: clamp(1.25rem, 2vw, 1.5rem); text-transform: uppercase; }
.vbio-lede             { color: var(--vbio-text-muted); font-size: clamp(1rem, 1.4vw, 1.125rem); max-width: 56ch; }
.vbio-fine             { color: var(--vbio-text-dim); font-size: 0.8125rem; margin-top: 1.5rem; }

/* ----- Buttons -------------------------------------------------------- */
.vbio-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    font-family: var(--vbio-font);
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border-radius: var(--vbio-r);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 200ms var(--vbio-ease);
    background: transparent;
    color: var(--vbio-text);
    text-decoration: none;
    line-height: 1;
}
.vbio-btn--primary {
    background: var(--vbio-cyan);
    color: #04141A;
    border-color: var(--vbio-cyan);
    box-shadow: var(--vbio-cyan-glow);
}
.vbio-btn--primary:hover {
    background: var(--vbio-cyan-2);
    border-color: var(--vbio-cyan-2);
    color: #04141A;
    transform: translateY(-1px);
}
.vbio-btn--ghost {
    background: transparent;
    border-color: var(--vbio-border-hi);
    color: var(--vbio-text);
}
.vbio-btn--ghost:hover {
    border-color: var(--vbio-cyan);
    color: var(--vbio-cyan);
    box-shadow: var(--vbio-cyan-glow);
}
.vbio-btn--sm {
    padding: 0.625rem 1.125rem;
    font-size: 0.8125rem;
}

.vbio-cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.875rem;
    margin: 2rem 0 0;
}

/* ----- Site header / nav (overrides Astra) --------------------------- */
body.vbio-theme .ast-primary-header-bar,
body.vbio-theme .main-header-bar,
body.vbio-theme .site-header,
body.vbio-theme #masthead {
    background: rgba(7, 16, 26, 0.85) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--vbio-border);
    box-shadow: none;
}
body.vbio-theme .main-navigation a,
body.vbio-theme .ast-builder-menu .main-header-menu > .menu-item > a {
    color: var(--vbio-text) !important;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 0.875rem;
    transition: color 160ms var(--vbio-ease);
}
body.vbio-theme .main-navigation a:hover,
body.vbio-theme .main-navigation .current-menu-item > a {
    color: var(--vbio-cyan) !important;
}

/* ----- Hero ---------------------------------------------------------- */
.vbio-hero {
    position: relative;
    padding: clamp(80px, 12vw, 160px) 0 clamp(60px, 8vw, 120px);
    overflow: hidden;
}
.vbio-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 75% 40%, rgba(61, 224, 224, 0.12), transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(61, 224, 224, 0.05), transparent 40%);
    pointer-events: none;
}
.vbio-hero__grid {
    position: relative;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: clamp(32px, 6vw, 80px);
    align-items: center;
}
.vbio-hero__copy { z-index: 1; }
.vbio-hero__media {
    aspect-ratio: 4 / 5;
    border-radius: var(--vbio-r-lg);
    background:
        radial-gradient(circle at 40% 50%, rgba(61, 224, 224, 0.18), transparent 60%),
        linear-gradient(180deg, var(--vbio-surface) 0%, var(--vbio-bg) 100%);
    border: 1px solid var(--vbio-border);
    box-shadow: var(--vbio-cyan-glow-lg);
    position: relative;
    overflow: hidden;
}
.vbio-hero__media::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('../images/products/hero-vial.svg');
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.95;
}

@media (max-width: 768px) {
    .vbio-hero__grid { grid-template-columns: 1fr; }
    .vbio-hero__media { max-width: 380px; margin: 0 auto; }
}

/* ----- Products grid ------------------------------------------------- */
.vbio-products {
    display: grid;
    gap: clamp(16px, 2.5vw, 28px);
    margin-top: 2.5rem;
}
.vbio-products--cols-2 { grid-template-columns: repeat(2, 1fr); }
.vbio-products--cols-3 { grid-template-columns: repeat(3, 1fr); }
.vbio-products--cols-4 { grid-template-columns: repeat(4, 1fr); }
.vbio-products--cols-5 { grid-template-columns: repeat(5, 1fr); }

@media (max-width: 1024px) {
    .vbio-products--cols-4,
    .vbio-products--cols-5 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 720px) {
    .vbio-products--cols-3,
    .vbio-products--cols-4,
    .vbio-products--cols-5 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 460px) {
    .vbio-products { grid-template-columns: 1fr !important; }
}

.vbio-product {
    background: var(--vbio-surface);
    border: 1px solid var(--vbio-border);
    border-radius: var(--vbio-r-lg);
    padding: 1.25rem 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    text-align: center;
    transition: all 220ms var(--vbio-ease);
    position: relative;
    overflow: hidden;
}
.vbio-product::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(61, 224, 224, 0.10), transparent 60%);
    opacity: 0;
    transition: opacity 220ms var(--vbio-ease);
    pointer-events: none;
}
.vbio-product:hover {
    border-color: var(--vbio-cyan);
    transform: translateY(-3px);
    box-shadow: var(--vbio-cyan-glow);
}
.vbio-product:hover::before { opacity: 1; }

.vbio-product__media {
    display: block;
    border-radius: var(--vbio-r);
    overflow: hidden;
    aspect-ratio: 3 / 4;
    background: linear-gradient(180deg, #0A1722 0%, #050C13 100%);
    margin-bottom: 1rem;
}
.vbio-product__img            { width: 100%; height: 100%; object-fit: contain; }
.vbio-product__img--placeholder { display: flex; align-items: center; justify-content: center; padding: 0; }
.vbio-product__img--placeholder svg { width: 100%; height: 100%; display: block; }

.vbio-product__title {
    font-size: 1.0625rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin: 0.25rem 0 0.5rem;
}
.vbio-product__title a { color: var(--vbio-text); }
.vbio-product__title a:hover { color: var(--vbio-cyan); }
.vbio-product__dosage {
    font-family: var(--vbio-mono);
    font-size: 0.8125rem;
    color: var(--vbio-cyan);
    margin: 0 0 0.25rem;
}
.vbio-product__blend {
    font-size: 0.75rem;
    color: var(--vbio-text-dim);
    margin: 0 0 0.5rem;
    letter-spacing: 0.02em;
}
.vbio-product__purity {
    font-size: 0.8125rem;
    color: var(--vbio-text-muted);
    margin: 0 0 0.25rem;
}
.vbio-product__purity span { color: var(--vbio-text-dim); }
.vbio-product__price {
    font-family: var(--vbio-mono);
    font-size: 0.9375rem;
    color: var(--vbio-text);
    margin: 0.25rem 0 0.75rem;
}
.vbio-product .vbio-btn { margin-top: auto; align-self: center; }

/* ----- Split section ------------------------------------------------- */
.vbio-split {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: clamp(32px, 6vw, 80px);
    align-items: center;
}
.vbio-split__media {
    aspect-ratio: 4 / 5;
    border-radius: var(--vbio-r-lg);
    background:
        radial-gradient(circle at 50% 50%, rgba(61, 224, 224, 0.16), transparent 65%),
        linear-gradient(180deg, var(--vbio-surface-2) 0%, var(--vbio-bg) 100%);
    border: 1px solid var(--vbio-border);
}
@media (max-width: 768px) { .vbio-split { grid-template-columns: 1fr; } }

/* ----- Disclaimer band ---------------------------------------------- */
.vbio-disclaimer-band {
    background: var(--vbio-bg-2);
    border-top: 1px solid var(--vbio-border);
    border-bottom: 1px solid var(--vbio-border);
    padding: 1.25rem 0;
    color: var(--vbio-text-dim);
    font-size: 0.8125rem;
    text-align: center;
    line-height: 1.5;
}

/* ----- Footer -------------------------------------------------------- */
body.vbio-theme .site-footer,
body.vbio-theme .footer-widget-area-inner,
body.vbio-theme .ast-footer-overlay,
body.vbio-theme [data-section="section-footer-builder"] {
    background: var(--vbio-bg) !important;
    color: var(--vbio-text-muted);
    border-top: 1px solid var(--vbio-border);
}
body.vbio-theme .site-footer a { color: var(--vbio-text-muted); }
body.vbio-theme .site-footer a:hover { color: var(--vbio-cyan); }
body.vbio-theme .site-footer h2,
body.vbio-theme .site-footer h3,
body.vbio-theme .site-footer .widget-title {
    color: var(--vbio-text);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.06em;
    margin-bottom: 1rem;
}

/* ----- Compliance gate (research-use modal) ------------------------- */
.vbio-gate {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--vbio-gutter);
}
.vbio-gate.is-open {
    display: flex;
    animation: vbio-fade-in 240ms var(--vbio-ease) both;
}
.vbio-gate__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(4, 9, 14, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.vbio-gate__panel {
    position: relative;
    max-width: 560px;
    width: 100%;
    background: var(--vbio-surface);
    border: 1px solid var(--vbio-cyan);
    border-radius: var(--vbio-r-lg);
    padding: 2.5rem 2rem;
    box-shadow: var(--vbio-cyan-glow-lg), 0 30px 80px rgba(0,0,0,0.6);
    text-align: center;
    color: var(--vbio-text);
}
.vbio-gate__brand {
    font-family: var(--vbio-font);
    font-weight: 800;
    letter-spacing: 0.18em;
    color: var(--vbio-text);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}
.vbio-gate__brand span { color: var(--vbio-cyan); }
.vbio-gate__title {
    text-transform: uppercase;
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin: 0 0 1rem;
}
.vbio-gate__body {
    color: var(--vbio-text-muted);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin: 0 0 1.5rem;
}
.vbio-gate__actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}
.vbio-gate__fine {
    color: var(--vbio-text-dim);
    font-size: 0.75rem;
    margin: 1.5rem 0 0;
}

@keyframes vbio-fade-in {
    from { opacity: 0; transform: scale(0.98); }
    to   { opacity: 1; transform: scale(1); }
}

/* ----- Single product page ------------------------------------------ */
.vbio-single {
    padding: clamp(48px, 7vw, 96px) 0;
}
.vbio-single__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(32px, 6vw, 64px);
    align-items: start;
}
@media (max-width: 800px) { .vbio-single__grid { grid-template-columns: 1fr; } }

.vbio-single__media {
    aspect-ratio: 3 / 4;
    border-radius: var(--vbio-r-lg);
    overflow: hidden;
    background: linear-gradient(180deg, var(--vbio-surface) 0%, var(--vbio-bg) 100%);
    border: 1px solid var(--vbio-border);
}
.vbio-single__media img,
.vbio-single__media svg { width: 100%; height: 100%; object-fit: contain; }

.vbio-single__title {
    font-size: clamp(2rem, 4vw, 3rem);
    text-transform: uppercase;
    margin: 0 0 0.5rem;
}
.vbio-single__badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background: var(--vbio-cyan-soft);
    border: 1px solid var(--vbio-cyan);
    color: var(--vbio-cyan);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 3px;
    margin-bottom: 1rem;
}

.vbio-specs {
    border: 1px solid var(--vbio-border);
    border-radius: var(--vbio-r);
    margin: 1.5rem 0;
    overflow: hidden;
}
.vbio-specs__row {
    display: grid;
    grid-template-columns: 180px 1fr;
    padding: 0.875rem 1.125rem;
    border-bottom: 1px solid var(--vbio-border);
    font-size: 0.9375rem;
}
.vbio-specs__row:last-child { border-bottom: none; }
.vbio-specs__row dt { color: var(--vbio-text-dim); font-weight: 500; text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.06em; align-self: center; }
.vbio-specs__row dd { margin: 0; color: var(--vbio-text); font-family: var(--vbio-mono); }

/* ----- Contact page form ------------------------------------------- */
.vbio-form {
    display: grid;
    gap: 1rem;
    max-width: 560px;
}
.vbio-form input,
.vbio-form textarea,
.vbio-form select {
    width: 100%;
    background: var(--vbio-surface);
    border: 1px solid var(--vbio-border);
    color: var(--vbio-text);
    padding: 0.875rem 1rem;
    border-radius: var(--vbio-r);
    font-family: var(--vbio-font);
    font-size: 0.9375rem;
    transition: border-color 160ms var(--vbio-ease);
}
.vbio-form input:focus,
.vbio-form textarea:focus {
    outline: none;
    border-color: var(--vbio-cyan);
    box-shadow: 0 0 0 3px rgba(61, 224, 224, 0.15);
}
.vbio-form label {
    font-size: 0.8125rem;
    color: var(--vbio-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.25rem;
    display: block;
}

/* ----- Empty state -------------------------------------------------- */
.vbio-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--vbio-text-dim);
    border: 1px dashed var(--vbio-border);
    border-radius: var(--vbio-r-lg);
}

/* ----- Utility ------------------------------------------------------ */
.vbio-mt-0 { margin-top: 0 !important; }
.vbio-mt-4 { margin-top: 1rem; }
.vbio-mt-8 { margin-top: 2rem; }
.vbio-mb-0 { margin-bottom: 0 !important; }