/* ============================================================
   NamViet Trace Portal — provenance / verification aesthetic
   Palette:  ink #12201C · spruce #0E5C4A · citrus #C7F04A
             paper #F6F7F2 · mist #E4E8E2 · verified #1E8E5A
   Type:     Space Grotesk (display) · Inter (body) · IBM Plex Mono (data)
   ============================================================ */

:root {
    --ink: #12201C;
    --spruce: #0E5C4A;
    --spruce-deep: #0A473A;
    --citrus: #C7F04A;
    --paper: #F6F7F2;
    --card: #FFFFFF;
    --mist: #E4E8E2;
    --muted: #5C6B64;
    --verified: #1E8E5A;

    --maxw: 40rem;
    --radius: 14px;
    --shadow: 0 1px 2px rgba(18, 32, 28, .04), 0 12px 32px -18px rgba(18, 32, 28, .28);

    --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --display: "Space Grotesk", var(--sans);
    --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    font-family: var(--sans);
    color: var(--ink);
    background: var(--paper);
    line-height: 1.55;
    /* subtle canning-line texture: faint horizontal rules like a batch ledger */
    background-image: linear-gradient(var(--mist) 1px, transparent 1px);
    background-size: 100% 3rem;
    background-position: 0 -1px;
}

.wrap {
    width: 100%;
    max-width: var(--maxw);
    margin-inline: auto;
    padding-inline: 1.25rem;
}

/* ---------- header ---------- */
.site-head {
    background: var(--spruce);
    color: #EAF3EE;
    border-bottom: 3px solid var(--citrus);
}

.head-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 3.5rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    text-decoration: none;
    color: inherit;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 2rem;
    height: 2rem;
    border-radius: 7px;
    background: var(--citrus);
    color: var(--spruce-deep);
    font-family: var(--display);
    font-weight: 700;
    font-size: .82rem;
    letter-spacing: .02em;
}

.brand-name {
    font-family: var(--display);
    font-weight: 600;
    font-size: 1.02rem;
    letter-spacing: -.01em;
}

.head-tag {
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .14em;
    color: #B8D6C9;
}

/* ---------- main / lookup ---------- */
main.wrap { flex: 1 0 auto; padding-block: 2.5rem 3rem; }

.eyebrow {
    margin: 0 0 .5rem;
    font-size: .74rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .16em;
    color: var(--spruce);
}

.lookup-title {
    margin: 0 0 .4rem;
    font-family: var(--display);
    font-weight: 700;
    font-size: clamp(1.6rem, 4.5vw + .6rem, 2.3rem);
    line-height: 1.08;
    letter-spacing: -.02em;
}

.lookup-sub {
    margin: 0 0 1.5rem;
    color: var(--muted);
    font-size: 1rem;
}
.lookup-sub strong { color: var(--ink); font-weight: 600; }

.lookup-form {
    display: flex;
    gap: .6rem;
    flex-wrap: wrap;
}

.lookup-input {
    flex: 1 1 14rem;
    min-width: 0;
    font-family: var(--mono);
    font-size: 1.05rem;
    letter-spacing: .04em;
    padding: .85rem 1rem;
    color: var(--ink);
    background: var(--card);
    border: 1.5px solid var(--mist);
    border-radius: 10px;
    transition: border-color .15s, box-shadow .15s;
}
.lookup-input::placeholder { color: #9AA8A1; letter-spacing: .02em; }
.lookup-input:focus-visible {
    outline: none;
    border-color: var(--spruce);
    box-shadow: 0 0 0 3px rgba(14, 92, 74, .16);
}

.lookup-btn {
    flex: 0 0 auto;
    font-family: var(--display);
    font-weight: 600;
    font-size: 1rem;
    padding: .85rem 1.5rem;
    color: #fff;
    background: var(--spruce);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background .15s, transform .05s;
}
.lookup-btn:hover { background: var(--spruce-deep); }
.lookup-btn:active { transform: translateY(1px); }
.lookup-btn:focus-visible { outline: 3px solid rgba(14, 92, 74, .4); outline-offset: 2px; }

/* ---------- result record (the "certificate") ---------- */
.record {
    margin-top: 2rem;
    background: var(--card);
    border: 1px solid var(--mist);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem 1.4rem 1.4rem;
    position: relative;
    overflow: hidden;
    animation: rise .35s cubic-bezier(.2, .7, .3, 1) both;
}
.record::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 4px;
    background: linear-gradient(90deg, var(--spruce), var(--citrus));
}

@keyframes rise {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: none; }
}

.record-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    margin-bottom: 1.1rem;
}

.seal {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    font-size: .78rem;
    font-weight: 600;
    color: var(--verified);
    background: rgba(30, 142, 90, .1);
    border: 1px solid rgba(30, 142, 90, .25);
    padding: .3rem .6rem .3rem .45rem;
    border-radius: 999px;
}

.record-kicker {
    margin: 0;
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .13em;
    color: var(--muted);
}

.record-product {
    margin: 0;
    font-family: var(--display);
    font-weight: 700;
    font-size: clamp(1.35rem, 3vw + .8rem, 1.7rem);
    line-height: 1.15;
    letter-spacing: -.015em;
}

.record-sku {
    margin: .35rem 0 0;
    font-family: var(--mono);
    font-size: .82rem;
    color: var(--muted);
}

/* facts grid */
.facts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    margin: 1.4rem 0 0;
    background: var(--mist);
    border: 1px solid var(--mist);
    border-radius: 10px;
    overflow: hidden;
}
.fact { background: var(--card); padding: .9rem 1rem; }
.fact-wide { grid-column: 1 / -1; }
.fact dt {
    margin: 0 0 .25rem;
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--muted);
}
.fact dd {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--ink);
}

/* the signature: jet-printed lot stamp */
.stamp {
    margin-top: 1.3rem;
    display: flex;
    align-items: baseline;
    gap: .75rem;
    padding: .85rem 1rem;
    border: 1.5px dashed var(--spruce);
    border-radius: 10px;
    background:
        repeating-linear-gradient(45deg, transparent 0 8px, rgba(14, 92, 74, .03) 8px 9px);
}
.stamp-label {
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .13em;
    color: var(--spruce);
    font-weight: 600;
    flex: 0 0 auto;
}
.stamp-code {
    font-size: clamp(1.05rem, 3.5vw + .4rem, 1.35rem);
    font-weight: 600;
    letter-spacing: .06em;
    color: var(--ink);
    word-break: break-all;
}

.mono { font-family: var(--mono); }

/* ---------- notice (not found / error) ---------- */
.notice {
    margin-top: 2rem;
    background: var(--card);
    border: 1px solid var(--mist);
    border-left: 4px solid #E0A94A;
    border-radius: var(--radius);
    padding: 1.3rem 1.4rem;
    box-shadow: var(--shadow);
}
.notice-title { margin: 0 0 .4rem; font-family: var(--display); font-weight: 600; font-size: 1.1rem; }
.notice-body { margin: 0 0 1rem; color: var(--muted); }
.notice-back {
    display: inline-block;
    font-weight: 600;
    color: var(--spruce);
    text-decoration: none;
    border-bottom: 2px solid var(--citrus);
    padding-bottom: 1px;
}
.notice-back:hover { color: var(--spruce-deep); }

/* ---------- hint (initial state) ---------- */
.hint { margin-top: 1.75rem; }
.hint-line {
    margin: 0;
    color: var(--muted);
    font-size: .92rem;
    padding: .9rem 1rem;
    background: rgba(14, 92, 74, .05);
    border-radius: 10px;
}
.hint-line .mono { color: var(--ink); font-size: .88rem; }

/* ---------- auditor extras ---------- */
.audit-note {
    margin: 0 0 1.5rem;
    font-size: .85rem;
    color: var(--muted);
    padding: .7rem .9rem;
    background: rgba(14, 92, 74, .05);
    border-radius: 8px;
}
.events { margin-top: 1.4rem; border-top: 1px solid var(--mist); padding-top: 1rem; }
.events h3 { margin: 0 0 .6rem; font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); }
.event-row {
    display: flex;
    gap: .75rem;
    padding: .5rem 0;
    border-bottom: 1px dotted var(--mist);
    font-size: .88rem;
}
.event-row:last-child { border-bottom: none; }
.event-when { font-family: var(--mono); font-size: .78rem; color: var(--muted); flex: 0 0 8.5rem; }

/* ---------- footer (legal entity — host driven) ---------- */
.site-foot {
    flex-shrink: 0;
    margin-top: 2rem;
    background: var(--ink);
    color: #C6D2CC;
    padding-block: 1.6rem;
    font-size: .84rem;
}
.foot-co { font-family: var(--display); font-weight: 600; color: #fff; font-size: .95rem; margin-bottom: .2rem; }
.foot-line { color: #9DB0A8; }
.foot-note { margin-top: .9rem; padding-top: .9rem; border-top: 1px solid rgba(255, 255, 255, .1); color: #86988F; font-size: .78rem; }

@media (max-width: 30rem) {
    .facts { grid-template-columns: 1fr; }
    .head-tag { display: none; }
    .event-row { flex-direction: column; gap: .15rem; }
    .event-when { flex-basis: auto; }
}

@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
}