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

html,
body {
    margin: 0;
    min-height: 100%;
}

body.portfolio-body {
    font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
    color: #fff;
    background:
        radial-gradient(1200px 500px at 50% -10%, rgba(184, 230, 236, 0.7), transparent 55%),
        linear-gradient(180deg, #eef6f8 0%, #f4f7f8 45%, #e9eef1 100%);
}

.portfolio {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 48px 24px 64px;
}

.portfolio-kicker {
    margin: 0 0 18px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.28em;
    color: #5aa8b0;
}

.portfolio-brand-logo {
    display: block;
    width: min(280px, 72vw);
    height: auto;
    margin: 0 0 56px;
}

.portfolio-grid {
    width: 100%;
    max-width: 1100px;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 28px;
}

.portfolio-grid > .demo-card {
    grid-column: span 2;
}

.portfolio-grid > .demo-card--quotation {
    grid-column: 1 / span 2;
}

.demo-card {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 280px;
    padding: 22px 24px 20px;
    border-radius: 6px;
    overflow: hidden;
    text-decoration: none;
    color: #fff;
    background-color: #1b1b1b;
    background-size: cover;
    background-position: center;
    box-shadow: 0 18px 40px rgba(20, 30, 40, 0.18);
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.demo-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.28) 0%, rgba(0, 0, 0, 0.55) 48%, rgba(0, 0, 0, 0.72) 100%);
}

.demo-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 24px 48px rgba(20, 30, 40, 0.24);
}

.demo-card-top,
.demo-card-body {
    position: relative;
    z-index: 1;
}

.demo-card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
}

.demo-card-num {
    font-size: 42px;
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1;
}

.demo-live {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.38);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
}

.demo-live-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #7cff6b;
    box-shadow: 0 0 8px #7cff6b;
}

.demo-icon {
    width: 34px;
    height: 34px;
    margin-bottom: 14px;
    display: grid;
    place-items: center;
    border: 1.5px solid rgba(255, 255, 255, 0.85);
    border-radius: 3px;
}

.demo-icon svg {
    width: 18px;
    height: 18px;
    stroke: #fff;
    fill: none;
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.demo-card h2 {
    margin: 0 0 8px;
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.demo-card p {
    margin: 0 0 28px;
    max-width: 320px;
    font-size: 14px;
    line-height: 1.45;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.92);
}

.demo-cta {
    font-size: 14px;
    font-weight: 600;
}

.demo-card--assist {
    background-image: url("../images/login-bg.png");
}

.demo-card--supply {
    background-image:
        linear-gradient(180deg, rgba(12, 24, 36, 0.15), rgba(12, 24, 36, 0.15)),
        url("https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?auto=format&fit=crop&w=1200&q=80");
}

.demo-card--glazing {
    background-image:
        linear-gradient(180deg, rgba(12, 24, 36, 0.12), rgba(12, 24, 36, 0.12)),
        url("https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?auto=format&fit=crop&w=1200&q=80");
}

.demo-card--quotation {
    background-image:
        url("../images/glazing-quotation.jpg"),
        linear-gradient(180deg, rgba(12, 24, 36, 0.12), rgba(12, 24, 36, 0.12)),
        url("https://images.unsplash.com/photo-1497366216548-37526070297c?auto=format&fit=crop&w=1200&q=80");
}

@media (max-width: 980px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        max-width: 720px;
    }

    .portfolio-grid > .demo-card,
    .portfolio-grid > .demo-card--quotation {
        grid-column: auto;
    }
}

@media (max-width: 820px) {
    .portfolio {
        padding: 36px 16px 48px;
    }

    .portfolio-brand-logo {
        width: min(220px, 78vw);
        margin-bottom: 36px;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        max-width: 460px;
    }

    .demo-card h2 {
        font-size: 28px;
    }
}