/* ==========================================================================
   PEPTIDE DOSAGES — dosage presentation layer
   Dosage guide panels, reconstitution cards, responsive reference tables
   and the mathematical dosage calculator.
   ========================================================================== */

:root {
    --ink: #1A1A1A;
    --ink-soft: #2C2C2C;
}

/* --------------------------------------------------------------------------
   Product page layout
   -------------------------------------------------------------------------- */

.product-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 2rem;
    align-items: start;
}

.product-main > section { margin-bottom: 1.6rem; }

.product-aside {
    position: sticky;
    top: calc(var(--header-h) + 1.1rem);
    display: grid;
    gap: 1.1rem;
}

/* Product header block */
.product-hero {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 1.8rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.7rem;
    margin-bottom: 1.6rem;
    box-shadow: var(--shadow-sm);
}

.product-hero .ph-media {
    background:
        radial-gradient(360px 220px at 60% 10%, rgba(201, 169, 97, 0.16), transparent 65%),
        var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 1rem;
}
.product-hero .ph-media img { max-height: 100%; object-fit: contain; }
.product-hero .ph-media .pc-placeholder {
    font-size: 3rem; font-weight: 800; color: var(--border-strong);
}

.ph-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--sp-4);
    align-items: center;
}

.ph-cat {
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0;
    text-transform: none;
    color: var(--muted);
}

.product-hero h1 {
    font-size: clamp(1.55rem, 1.2rem + 1.6vw, 2.15rem);
    text-transform: none;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 0.6rem;
    color: var(--ink);
}

.ph-tagline {
    color: var(--muted);
    font-size: var(--fs-md);
    margin-bottom: var(--sp-4);
}

.ph-strengths { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: var(--sp-4); }
.strength-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--surface);
    color: var(--text);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    padding: 0.28rem 0.7rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-variant-numeric: tabular-nums;
}
.strength-pill.is-outline {
    background: transparent;
    color: var(--muted);
    border: 1px solid var(--border);
}

.ph-availability { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* --------------------------------------------------------------------------
   Content sections
   -------------------------------------------------------------------------- */

.content-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.content-card .card-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.15rem 1.45rem 0.85rem;
    background: transparent;
    border-bottom: 1px solid var(--border);
}
.content-card .card-head h2 {
    color: var(--ink);
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0;
    text-transform: none;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.content-card .card-head h2 svg { width: 16px; height: 16px; color: var(--faint); }
.content-card .card-head .head-tag {
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: none;
    color: var(--faint);
    background: transparent;
    padding: 0;
    border-radius: 0;
    white-space: nowrap;
}
.content-card .card-body { padding: 1.25rem 1.45rem 1.45rem; }

.content-card.card-recon {
    background: var(--surface);
    border-color: var(--border);
}
.content-card.card-recon .card-head {
    background: transparent;
}
.content-card.card-recon .card-head h2 { color: var(--ink); }
.content-card.card-recon .card-head h2 svg { color: var(--faint); }
.content-card.card-recon .card-head .head-tag { background: transparent; color: var(--faint); }

/* Source prose */
.source-prose { color: var(--text); font-size: var(--fs-base); }
.source-prose > *:last-child { margin-bottom: 0; }
/* Source catalogue copy is authored with Tailwind utilities. Map the ones PURLABS actually publishes. */
.source-prose .text-xl { font-size: 1.2rem; line-height: 1.35; font-weight: 700; color: var(--primary); }
.source-prose .text-\[\#C9A961\] { color: var(--primary); }
.source-prose .mt-2 { margin-top: 0.5rem; }
.source-prose .flex { display: flex; }
.source-prose .items-center { align-items: center; }
.source-prose .gap-2 { gap: 0.5rem; }
.source-prose .space-y-2 > * + *,
.source-prose .space-y-3 > * + * { margin-top: 0.55rem; }
.source-prose .text-gray-700 { color: var(--text); }
.source-prose .text-gray-600 { color: var(--muted); }
.source-prose h3, .source-prose h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-top: 1.2rem;
    text-transform: none;
    letter-spacing: 0;
    color: var(--ink);
}
.source-prose ul, .source-prose ol { margin-bottom: var(--sp-4); }
.source-prose li { margin-bottom: 0.3rem; }
.source-prose strong { color: var(--primary); }
.source-prose table { margin: var(--sp-4) 0; }

/* --------------------------------------------------------------------------
   Dosage facts (hierarchy rows)
   -------------------------------------------------------------------------- */

.facts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    align-items: start;
    gap: 0.75rem;
    margin-bottom: 1.35rem;
}
.fact {
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.8rem 0.95rem;
}
.fact .fact-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: none;
    color: var(--faint);
    margin-bottom: 0.28rem;
}
.fact .fact-value {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--text);
    line-height: 1.55;
    font-variant-numeric: tabular-nums;
    overflow-wrap: anywhere;
}
.fact .fact-value.is-missing {
    color: var(--faint);
    font-weight: 500;
    font-style: italic;
}
.fact .fact-line { display: block; }
.fact .fact-line + .fact-line {
    margin-top: 0.4rem;
    padding-top: 0.4rem;
    border-top: 1px dashed var(--border-strong);
}

.not-provided {
    color: var(--faint);
    font-style: italic;
    font-size: var(--fs-sm);
}

/* --------------------------------------------------------------------------
   Reference tables (responsive)
   -------------------------------------------------------------------------- */

.dose-table-block { margin-bottom: 1.5rem; }
.dose-table-block:last-child { margin-bottom: 0; }

.dose-table-title {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.55rem;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--ink);
    margin: 0 0 0.65rem;
}
.dose-table-title .tt-source {
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: none;
    color: var(--faint);
    background: transparent;
    padding: 0;
    border-radius: 0;
}

.table-chips { display: flex; flex-wrap: wrap; gap: 0.45rem; margin: -0.2rem 0 0.75rem; }
.meas-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: var(--fs-xs);
    font-weight: 500;
    color: var(--muted);
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    font-variant-numeric: tabular-nums;
}
.meas-chip svg { width: 11px; height: 11px; color: var(--faint); }

.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    /* subtle affordance that the table scrolls */
    background-image: linear-gradient(to left, rgba(0, 0, 0, 0.06), transparent 40px);
    background-position: right center;
    background-repeat: no-repeat;
}
.table-scroll:focus-visible { outline: 3px solid var(--primary); outline-offset: 1px; }

.reference-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--fs-sm);
    min-width: 480px;
}
.reference-table caption {
    caption-side: top;
    text-align: left;
    padding: 0.7rem 0.95rem;
    font-size: var(--fs-xs);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    background: var(--surface-alt);
    border-bottom: 1px solid var(--border);
}
.reference-table th {
    background: #F8F7F4;
    color: var(--ink);
    text-align: left;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    text-transform: none;
    padding: 0.85rem 1rem;
    white-space: nowrap;
    border-bottom: 1px solid var(--border);
    border-right: 0;
}
.reference-table th:last-child { border-right: 0; }
.reference-table td {
    padding: 0.85rem 1rem;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    font-variant-numeric: tabular-nums;
}
.reference-table tbody tr:nth-child(even) { background: #FCFCFB; }
.reference-table tbody tr:hover { background: #F7F6F3; }
.reference-table tbody tr:last-child td { border-bottom: 0; }
.reference-table td:first-child { font-weight: 600; color: var(--ink); white-space: nowrap; }

.table-note {
    font-size: var(--fs-xs);
    color: var(--muted);
    margin: 0.55rem 0 0;
    line-height: 1.6;
}
.table-footer {
    font-size: var(--fs-sm);
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.7rem 0.95rem;
    margin-top: 0.6rem;
    color: var(--muted);
}
.table-footer strong { color: var(--primary); }

.scroll-hint {
    display: none;
    font-size: var(--fs-xs);
    color: var(--faint);
    margin-top: 0.4rem;
    align-items: center;
    gap: 0.35rem;
}

/* --------------------------------------------------------------------------
   Research sections
   -------------------------------------------------------------------------- */

.research-section { margin-bottom: 1.4rem; }
.research-section:last-child { margin-bottom: 0; }
.research-section > h3 {
    font-size: 0.98rem;
    font-weight: 600;
    text-transform: none;
    letter-spacing: 0;
    padding-bottom: 0.45rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 0.85rem;
    color: var(--ink);
}
.research-block { margin-bottom: 1.1rem; }
.research-block h4 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: none;
    letter-spacing: 0;
    color: var(--ink);
    margin-bottom: 0.5rem;
}
.research-block ul { margin: 0 0 0.8rem; padding-left: 1.15rem; }
.research-block li { margin-bottom: 0.35rem; font-size: var(--fs-sm); }
.research-block p { font-size: var(--fs-sm); color: var(--text); }

/* Warnings */
.warning-list { display: grid; gap: 0.7rem; }
.warning-item {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    background: var(--warning-soft);
    border: 1px solid rgba(166, 123, 31, 0.3);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    font-size: var(--fs-sm);
    color: #5B4712;
}
.warning-item svg { width: 17px; height: 17px; flex-shrink: 0; color: var(--warning); margin-top: 3px; }

/* Source box */
.source-box {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius);
    padding: 1.15rem 1.4rem;
}
.source-box .src-label {
    font-size: var(--fs-xs);
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--muted);
    display: block;
    margin-bottom: 0.2rem;
}
.source-box .src-name {
    font-weight: 700;
    color: var(--primary);
    font-size: var(--fs-md);
}
.source-box .src-name a { color: var(--primary-deep); text-decoration: underline; text-underline-offset: 3px; }

/* --------------------------------------------------------------------------
   Aside widgets
   -------------------------------------------------------------------------- */

.aside-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}
.aside-card .aside-head {
    background: transparent;
    border-bottom: 1px solid var(--border);
    padding: 0.85rem 1.1rem;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0;
    text-transform: none;
    color: var(--ink);
    margin: 0;
}
.aside-card .aside-body { padding: 1.1rem; }

.aside-body dl { display: grid; gap: 0.65rem; margin: 0; }
.aside-body dt {
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0;
    text-transform: none;
    color: var(--faint);
}
.aside-body dd {
    margin: 0 0 0.35rem;
    font-size: var(--fs-sm);
    color: var(--text);
    font-weight: 600;
}
.aside-body dd.is-missing { color: var(--faint); font-style: italic; font-weight: 500; }

.aside-actions { display: grid; gap: 0.6rem; }

/* Jump nav */
.jump-nav { display: grid; gap: 0.15rem; }
.jump-nav a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.58rem 0.75rem;
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--text);
    border-radius: var(--radius-sm);
    transition: background var(--t-fast), color var(--t-fast);
}
.jump-nav a::after { content: "↓"; color: var(--faint); font-size: 0.8em; }
.jump-nav a:hover { background: var(--accent-soft); color: var(--primary); }

/* --------------------------------------------------------------------------
   Calculator
   -------------------------------------------------------------------------- */

.calc-board {
    background: #fff;
    border: 1px solid #E4E4E4;
    border-radius: 22px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.06);
    padding: 1.35rem 1.35rem 1.15rem;
}
.calc-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 1.35rem;
    align-items: stretch;
}

.calc-inputs { display: grid; gap: 1rem; align-content: start; }

.calc-field label {
    display: block;
    font-size: 0.98rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: none;
    color: #1A1A1A;
    margin-bottom: 0.45rem;
}
.calc-field label .unit {
    color: var(--muted);
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: none;
}
.calc-field input[type="number"],
.calc-field select {
    width: 100%;
    font-family: var(--font);
    font-size: var(--fs-md);
    font-weight: 600;
    color: var(--text);
    padding: 0.72rem 0.9rem;
    border: 1.5px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: var(--surface);
    transition: border-color var(--t-fast), box-shadow var(--t-fast);
    font-variant-numeric: tabular-nums;
}
.calc-field input:focus, .calc-field select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.calc-field .field-hint {
    font-size: var(--fs-xs);
    color: var(--muted);
    margin-top: 0.3rem;
}

.calc-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: 0.45rem;
}
.preset-btn {
    font-family: var(--font);
    font-size: var(--fs-xs);
    font-weight: 700;
    color: var(--primary);
    background: var(--accent-soft);
    border: 1px solid rgba(201, 169, 97, 0.5);
    border-radius: 999px;
    padding: 0.3rem 0.7rem;
    cursor: pointer;
    transition: all var(--t-fast);
}
.preset-btn:hover, .preset-btn.is-active {
    background: var(--surface);
    color: var(--ink);
    border-color: var(--border-strong);
}

.calc-field select {
    appearance: none;
    border-radius: 999px;
    padding-right: 2.6rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.2 L6 6.2 L11 1.2' fill='none' stroke='%231A1A1A' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    cursor: pointer;
}
.calc-field select:disabled {
    color: var(--ink);
    background-color: #FAFAFA;
    cursor: default;
}
.calc-custom {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.45rem;
}
.calc-custom[hidden] { display: none; }
.calc-custom input { flex: 1; }
.calc-custom select { width: 6.2rem; flex: 0 0 6.2rem; }

.calc-readout {
    margin-top: 1.15rem;
    background: #1A1A1A;
    color: #fff;
    border-radius: 18px;
    padding: 1.35rem 1.2rem 1.2rem;
    text-align: center;
}
.calc-readout .cr-label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.72);
}
.calc-readout .cr-value {
    margin: 0.25rem 0 0.15rem;
    font-size: clamp(2.4rem, 2rem + 1.5vw, 3.3rem);
    font-weight: 800;
    line-height: 1.05;
    color: #E3C968;
    font-variant-numeric: tabular-nums;
}
.calc-readout.is-empty .cr-value {
    color: rgba(255, 255, 255, 0.45);
    font-size: 2.2rem;
}
.calc-readout .cr-sub {
    margin: 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: 0.95rem;
}
.calc-readout .cr-note {
    margin: 0.7rem 0 0;
    color: #E3C968;
    font-size: 0.82rem;
}

.syringe-panel {
    background: #F7F7F7;
    border: 1px solid #ECECEC;
    border-radius: 18px;
    padding: 1.15rem 1.1rem 0.95rem;
    display: flex;
    flex-direction: column;
    min-height: 100%;
}
.syringe-panel h2 {
    margin: 0 0 0.85rem;
    font-size: 1.45rem;
    letter-spacing: 0;
    text-transform: none;
    color: #1A1A1A;
}
.syringe-svg { width: 100%; height: auto; display: block; }
.syringe-fill {
    transform-box: fill-box;
    transform-origin: left center;
    transform: scaleX(0);
    transition: transform 0.45s cubic-bezier(0.22, 0.8, 0.3, 1);
}
.syringe-caption {
    margin: 0.35rem 0 0;
    text-align: center;
    color: var(--muted);
    font-size: 0.92rem;
}

.calc-disclaimer {
    margin: 0.95rem 0 0;
    font-size: var(--fs-xs);
    color: var(--muted);
    line-height: 1.55;
}
.calc-disclaimer strong { color: var(--primary-deep); }

/* --------------------------------------------------------------------------
   Related products
   -------------------------------------------------------------------------- */

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 1.1rem;
}
.related-grid .product-card .pc-media { aspect-ratio: 1.35; }

/* --------------------------------------------------------------------------
   Tabs (research information grouping on product page)
   -------------------------------------------------------------------------- */

.segmented {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.1rem;
    padding: 0.3rem;
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: 999px;
    width: fit-content;
}
.segmented button {
    font-family: var(--font);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0;
    text-transform: none;
    color: var(--muted);
    background: transparent;
    border: 0;
    border-radius: 999px;
    padding: 0.42rem 0.95rem;
    cursor: pointer;
    transition: all var(--t-fast);
}
.segmented button:hover { color: var(--ink); }
.segmented button[aria-selected="true"] {
    background: var(--surface);
    color: var(--ink);
    box-shadow: var(--shadow-sm);
}

/* Homepage complete-guide sample */
.sample-guide {
    display: grid;
    gap: 1.5rem;
    margin-top: 1.5rem;
}
.guide-lead {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-end;
}
.guide-lead h3 {
    margin: 0 0 0.35rem;
    font-size: clamp(1.35rem, 1.1rem + 1.2vw, 1.75rem);
    text-transform: none;
    letter-spacing: 0;
    font-weight: 600;
    color: var(--ink);
}
.guide-lead p { margin: 0; color: var(--muted); max-width: 62ch; }
.sample-guide .ph-strengths { gap: 0.5rem; }