/* ── Section ── */
.section.prototype {
    position: relative;
    overflow: hidden;
}

.prototype-glow--tr {
    width: 400px;
    height: 400px;
    top: -120px;
    right: -100px;
    background: rgba(124, 252, 0, .08);
    filter: blur(78px);
}

.prototype-glow--bl {
    width: 450px;
    height: 450px;
    left: -120px;
    bottom: -80px;
    background: rgba(124, 252, 0, .08);
    filter: blur(78px);
}

/* ── Shell ── */
.prototype-shell {
    background: var(--color-paper);
    border-radius: 8px;
    outline: 1px solid rgba(139, 139, 139, 0.2);
    outline-offset: -1px;
    overflow: hidden;
    width: 100%;
}

/* ── Feature tabs (cards inside shell) ── */
.prototype-tabs {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 20px;
    padding: 24px;
    border-bottom: 1px solid rgba(139, 139, 139, .2);
}

.prototype-tab {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 16px;
    height: 80px;
    flex: 1;
    width: 100%;
    padding: 8px;
    border: 1px solid rgba(139, 139, 139, .2);
    border-radius: 8px;
    background: #FCFCFB;
    text-align: left;
    cursor: pointer;
    font-family: var(--font-sans);
    transition: border-color .2s ease;
}

.prototype-tab:hover {
    border-color: rgba(139, 139, 139, .4);
}

.prototype-tab.is-active {
    border-color: #1A191F;
}

.prototype-tab-icon {
    display: grid;
    width: 64px;
    height: 64px;
    flex: 0 0 64px;
    place-items: center;
    border-radius: 6px;
    background: #1A191F;
}

.prototype-tab .icon-opened {
    display: none;
}

.prototype-tab .icon-closed {
    display: block;
}

.prototype-tab.is-active .icon-closed {
    display: none;
}

.prototype-tab.is-active .icon-opened {
    display: block;
}

.prototype-tab > span:last-child {
    flex: 1;
    min-width: 0;
}

.prototype-tab b {
    display: block;
    font-size: 20px;
    font-weight: 500;
    color: #1A191F;
    line-height: 30px;
}

.prototype-tab small {
    display: block;
    color: #8B8B8B;
    font-size: 16px;
    font-weight: 400;
    line-height: 135%;
}

/* ── Panel (dark interface area) ── */
.prototype-panel {
    margin: 16px 8px 8px 8px;
    border-radius: 8px;
    min-height: 720px;
    color: #edf1f3;
    background: #101216;
}

.prototype-panel[hidden] {
    display: none;
}

/* ── Demo toolbar ── */
.demo-toolbar {
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 12px 20px;
    border-bottom: 1px solid #292c33;
    background: #16191e;
}

.demo-toolbar > div:first-child {
    display: flex;
    flex-direction: column;
}

.demo-kicker {
    color: #7c8490;
    font-size: .62rem;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.demo-toolbar strong {
    font-size: .9rem;
}

.demo-live,
.dashboard-updated {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #9da5af;
    font-size: .7rem;
}

.demo-live i,
.dashboard-updated i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #28e590;
    box-shadow: 0 0 0 4px rgba(40, 229, 144, .1);
}

/* ── POS layout ── */
.pos-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 350px;
    min-height: 652px;
}

.pos-catalog {
    min-width: 0;
    padding: 24px;
}

.pos-search {
    min-height: 46px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 15px;
    border: 1px solid #30343c;
    border-radius: 9px;
    background: #191c22;
}

.pos-search span {
    color: #8d96a1;
    font-size: 1.25rem;
}

.pos-search input {
    width: 100%;
    color: #fff;
    border: 0;
    outline: 0;
    background: transparent;
    font: inherit;
}

.pos-search input::placeholder {
    color: #737b86;
}

.category-list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 18px 0;
    scrollbar-width: none;
}

.category-list button {
    flex: 0 0 auto;
    padding: 8px 13px;
    color: #a9b0b9;
    border: 1px solid #30343c;
    border-radius: 999px;
    background: transparent;
    cursor: pointer;
}

.category-list button.is-active {
    color: #101216;
    border-color: var(--color-accent);
    background: var(--color-accent);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.product-card {
    min-width: 0;
    padding: 0;
    overflow: hidden;
    color: #fff;
    border: 1px solid #2d3037;
    border-radius: 10px;
    background: #191c22;
    text-align: left;
    cursor: pointer;
    transition: border-color .18s ease, transform .18s ease;
}

.product-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-accent);
}

.product-visual {
    min-height: 106px;
    display: grid;
    place-items: center;
    background: linear-gradient(145deg, #242833, #181b20);
    font-size: 2.5rem;
}

.product-copy {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    padding: 12px;
}

.product-copy span {
    min-width: 0;
    overflow: hidden;
    font-size: .78rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.product-copy b {
    color: var(--color-accent);
    font-size: .76rem;
    white-space: nowrap;
}

/* ── POS cart ── */
.pos-cart {
    min-width: 0;
    display: flex;
    flex-direction: column;
    border-left: 1px solid #292c33;
    background: #15181d;
}

.cart-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 20px;
    border-bottom: 1px solid #292c33;
}

.cart-heading h3 {
    margin: 2px 0 0;
}

.cart-heading h3 span {
    display: inline-grid;
    min-width: 23px;
    height: 23px;
    place-items: center;
    margin-left: 5px;
    color: #111;
    border-radius: 50%;
    background: var(--color-accent);
    font-size: .68rem;
}

.cart-heading button {
    color: #8c959f;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.cart-items {
    min-height: 220px;
    flex: 1;
    overflow-y: auto;
    padding: 10px 20px;
}

.empty-cart {
    height: 100%;
    min-height: 210px;
    display: grid;
    place-items: center;
    color: #68717d;
    text-align: center;
}

.empty-cart span {
    display: block;
    margin-bottom: 8px;
    font-size: 2rem;
}

.cart-item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid #292c33;
}

.cart-item strong {
    display: block;
    font-size: .8rem;
}

.cart-item small {
    color: #7c8490;
    font-size: .72rem;
}

.cart-item b {
    color: #edf1f3;
    font-size: .8rem;
}

.cart-item .cart-qty {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 2px;
}

.cart-item .cart-qty button {
    display: grid;
    width: 22px;
    height: 22px;
    place-items: center;
    color: #a2abb6;
    border: 1px solid #424851;
    border-radius: 5px;
    background: transparent;
    cursor: pointer;
    font-size: .9rem;
}

.cart-item .cart-qty span {
    color: #e9edf2;
    font-size: .82rem;
}

/* ── Cart summary ── */
.cart-summary {
    padding: 14px 20px;
    border-top: 1px solid #292c33;
}

.cart-summary > div {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.cart-summary span {
    color: #8c959f;
    font-size: .8rem;
}

.cart-summary b {
    color: #edf1f3;
    font-size: .82rem;
}

.cart-total {
    padding-top: 8px;
    border-top: 1px solid #292c33;
}

.cart-total span {
    font-size: .9rem;
}

.cart-total b {
    font-size: .95rem;
}

.checkout-button {
    width: 100%;
    margin-top: 10px;
    padding: 13px;
    color: #111;
    border: 0;
    border-radius: 8px;
    background: var(--color-accent);
    cursor: pointer;
    font-weight: 500;
    font-size: .95rem;
    font-family: var(--font-sans);
    transition: opacity .2s ease;
}

.checkout-button:disabled {
    opacity: .4;
    cursor: default;
}

/* ── Toast ── */
.demo-toast {
    position: absolute;
    bottom: 20px;
    left: 50%;
    z-index: 10;
    transform: translateX(-50%) translateY(8px);
    padding: 11px 24px;
    color: #111;
    border-radius: 999px;
    background: var(--color-accent);
    font-size: .82rem;
    font-weight: 500;
    opacity: 0;
    transition: opacity .2s ease, transform .2s ease;
}

.prototype-panel {
    position: relative;
}

.demo-toast.is-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ── Dashboard panel ── */
.period-switcher {
    display: flex;
    gap: 5px;
    padding: 4px;
    border: 1px solid #30343c;
    border-radius: 8px;
}

.period-switcher button {
    padding: 6px 10px;
    color: #8f98a3;
    border: 0;
    border-radius: 5px;
    background: transparent;
    cursor: pointer;
}

.period-switcher button.is-active {
    color: #111;
    background: var(--color-accent);
}

.dashboard-content {
    padding: 26px;
}

.dashboard-greeting {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
}

.dashboard-greeting h3 {
    margin: 4px 0;
    font-size: 1.45rem;
}

.dashboard-greeting p {
    margin: 0;
    font-size: .76rem;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.metric-grid article {
    padding: 17px;
    border: 1px solid #2d3037;
    border-radius: 9px;
    background: #191c22;
}

.metric-grid span {
    display: block;
    margin-bottom: 13px;
    color: #7f8893;
    font-size: .65rem;
    text-transform: uppercase;
}

.metric-grid strong {
    display: block;
    margin-bottom: 5px;
    font-size: clamp(1.05rem, 2vw, 1.65rem);
    font-weight: 500;
}

.metric-grid small {
    color: #32df8b;
}

.metric-grid small.is-negative {
    color: #ff7b7b;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1.45fr .75fr;
    gap: 12px;
    margin-top: 12px;
}

.chart-card,
.units-card {
    min-width: 0;
    padding: 18px;
    border: 1px solid #2d3037;
    border-radius: 9px;
    background: #191c22;
}

.chart-card header,
.units-card header {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 12px;
}

.chart-card h3,
.units-card h3 {
    margin: 3px 0 0;
    font-size: .95rem;
}

.chart-card header > strong {
    font-size: .9rem;
}

.bar-chart {
    position: relative;
    height: 300px;
    display: flex;
    align-items: end;
    gap: 10px;
    padding-top: 35px;
    border-bottom: 1px solid #343841;
    background-image: repeating-linear-gradient(
        to top,
        transparent 0 59px,
        rgba(255, 255, 255, .055) 60px
    );
}

.chart-bar-wrap {
    position: relative;
    z-index: 1;
    height: 100%;
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: end;
    align-items: center;
    gap: 8px;
}

.chart-bar {
    width: min(36px, 70%);
    min-height: 8px;
    border-radius: 5px 5px 0 0;
    background: linear-gradient(to top, #347b19, var(--color-accent));
    transition: height .35s ease;
}

.chart-bar-wrap small {
    color: #737c87;
    font-size: .6rem;
}

.chart-trend {
    position: absolute;
    z-index: 2;
    inset: 35px 0 22px;
    width: 100%;
    height: calc(100% - 57px);
    overflow: visible;
    pointer-events: none;
    filter: drop-shadow(0 0 6px rgba(112, 239, 0, .55));
}

.chart-trend polyline {
    fill: none;
    stroke: #b4ff70;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    vector-effect: non-scaling-stroke;
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
    animation: chart-line-draw .8s cubic-bezier(.22, .8, .25, 1) forwards;
}

.chart-trend circle {
    fill: #101216;
    stroke: #b4ff70;
    stroke-width: 2;
    vector-effect: non-scaling-stroke;
    opacity: 0;
    transform-box: fill-box;
    transform-origin: center;
    animation: chart-point-in .24s ease forwards;
    animation-delay: calc(.38s + (var(--point-index) * .06s));
}

@keyframes chart-line-draw {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes chart-point-in {
    from {
        opacity: 0;
        transform: scale(0);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.unit-list {
    margin: 16px 8px 8px 8px;
    border-radius: 8px;
}

.unit-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    padding: 14px 0;
    border-bottom: 1px solid #292c33;
}

.unit-row:last-child {
    border-bottom: 0;
}

.unit-row strong {
    display: block;
    overflow: hidden;
    font-size: .76rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.unit-row small {
    color: #7d8691;
}

.unit-row > span {
    color: #32df8b;
    font-size: .78rem;
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .pos-layout {
        grid-template-columns: 1fr;
    }
    .pos-cart {
        border-top: 1px solid #292c33;
        border-left: 0;
    }
    .cart-items {
        max-height: 330px;
    }
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1080px) {
    .prototype-tab b {
        font-size: 16px;
    }
    .prototype-tab small {
        font-size: 14px;
    }
}

@media (max-width: 700px) {
    .prototype-tabs {
        flex-direction: column;
    }
    .prototype-tab-icon {
        width: 48px;
        height: 48px;
        flex-basis: 48px;
    }
    .prototype-tab small {
        font-size: .78rem;
    }
    .prototype-panel {
        min-height: 0;
    }
    .pos-catalog,
    .dashboard-content {
        padding: 16px;
    }
    .product-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .metric-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .dashboard-greeting {
        align-items: start;
        flex-direction: column;
    }
    .bar-chart {
        height: 230px;
        gap: 5px;
    }
}

@media (max-width: 420px) {
    .prototype-tabs {
        padding: 16px;
        gap: 14px;
    }
    .prototype-tab {
        height: auto;
        gap: 12px;
    }
    .prototype-tab-icon {
        width: 40px;
        height: 40px;
        flex-basis: 40px;
    }
    .prototype-tab-icon svg {
        width: 24px;
        height: 24px;
    }
    .prototype-tab b {
        font-size: 14px;
    }
    .prototype-tab small {
        font-size: .7rem;
    }
    .product-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    .product-visual {
        min-height: 82px;
    }
    .product-copy {
        flex-direction: column;
    }
    .metric-grid {
        grid-template-columns: 1fr;
    }
    .period-switcher button {
        padding-inline: 8px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .chart-trend polyline,
    .chart-trend circle {
        animation: none;
        stroke-dashoffset: 0;
        opacity: 1;
    }
}