/* Kanade 0.5.2 - scoped, live HTML implementation of the feature-card mockup.
   Do not reuse .feature-grid: its legacy rules add an unpadded dark background.
   Inherit the existing data-theme preference; no inline style or extra JS. */
.k-fundamentals {
    --kf-section: #f5f8ff;
    --kf-glow: #dce8fc66;
    --kf-card-top: #ffffff;
    --kf-card-bottom: #fbfdff;
    --kf-border: #d9e4f5;
    --kf-heading: #102449;
    --kf-body: #5a6d8e;
    --kf-accent: #245bda;
    --kf-shadow: 0 8px 28px #16387808;
    padding-block: clamp(56px, 6vw, 92px);
    background: radial-gradient(ellipse at 50% 35%, var(--kf-glow), transparent 70%), var(--kf-section);
    border-block: 1px solid var(--kf-border);
}

.k-fundamentals-heading {
    max-width: 960px;
    margin: 0 auto clamp(32px, 3.6vw, 54px);
    text-align: center;
}

.k-fundamentals-eyebrow {
    margin: 0;
    color: var(--kf-accent);
    font-size: 12px;
    font-weight: 750;
    line-height: 1.6;
    letter-spacing: 0.17em;
}

.k-fundamentals-heading h2 {
    margin: 18px 0 0;
    color: var(--kf-heading);
    font-size: clamp(32px, 3.65vw, 54px);
    font-weight: 750;
    line-height: 1.18;
    letter-spacing: -0.035em;
    overflow-wrap: break-word;
    text-wrap: balance;
}

.k-fundamentals-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    align-items: stretch;
}

.k-fundamental-card {
    display: grid;
    grid-template-rows: auto auto 1fr;
    gap: 22px;
    min-width: 0;
    padding: clamp(26px, 2.3vw, 36px);
    border: 1px solid var(--kf-border);
    border-radius: 16px;
    background: linear-gradient(145deg, var(--kf-card-top), var(--kf-card-bottom));
    box-shadow: var(--kf-shadow);
    /* No fixed height or overflow:hidden: zoom and longer copy remain readable. */
}

.k-fundamental-icon {
    display: grid;
    place-items: center;
    width: 64px;
    height: 64px;
    margin: 0;
    border: 1px solid #dce6ff;
    border-radius: 15px;
    background: linear-gradient(145deg, #f7faff, #e9efff);
    color: #3868f5;
    box-shadow: inset 0 1px 0 #ffffff;
}

.k-fundamental-icon > .icon {
    width: 29px;
    height: 29px;
    stroke-width: 1.65;
}

.k-fundamental-card h3 {
    margin: 0;
    color: var(--kf-heading);
    font-size: clamp(20px, 1.6vw, 23px);
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -0.025em;
    overflow-wrap: anywhere;
}

.k-fundamental-card p {
    margin: 0;
    color: var(--kf-body);
    font-size: 16px;
    line-height: 1.8;
    overflow-wrap: anywhere;
}

/* Dark tones from the approved section, not a screenshot background. */
:root[data-theme=dark] .k-fundamentals {
    --kf-section: #10213b;
    --kf-glow: #25457625;
    --kf-card-top: #142640;
    --kf-card-bottom: #13243e;
    --kf-border: #2b4265;
    --kf-heading: #f4f7ff;
    --kf-body: #afc3e3;
    --kf-accent: #9dbdff;
    --kf-shadow: 0 8px 28px #060e1d0d;
}

/* Shared tracks align icons, titles and paragraphs, including wrapped titles.
   Grid without subgrid above is a readable fallback for older browsers. */
@supports (grid-template-rows: subgrid) {
    @media (min-width: 901px) {
        .k-fundamentals-grid {
            row-gap: 22px;
        }
        .k-fundamental-card {
            grid-row: span 3;
            grid-template-rows: subgrid;
        }
    }
}

@media (max-width: 1100px) and (min-width: 901px) {
    .k-fundamentals-grid {
        column-gap: 20px;
    }
    .k-fundamental-card {
        padding: 26px;
    }
}

@media (max-width: 900px) {
    .k-fundamentals-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 20px;
    }
    .k-fundamental-card {
        padding: 28px;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .k-fundamentals {
        padding-block: 52px;
    }
    .k-fundamentals-eyebrow {
        font-size: 11px;
        letter-spacing: 0.14em;
    }
    .k-fundamentals-heading h2 {
        margin-top: 14px;
        font-size: 32px;
    }
    .k-fundamental-card {
        padding: 24px;
        gap: 19px;
        border-radius: 15px;
    }
    .k-fundamental-icon {
        width: 56px;
        height: 56px;
        border-radius: 13px;
    }
    .k-fundamental-icon > .icon {
        width: 26px;
        height: 26px;
    }
    .k-fundamental-card h3 {
        font-size: 21px;
    }
    .k-fundamental-card p {
        font-size: 15px;
        line-height: 1.8;
    }
}

@media (forced-colors: active) {
    .k-fundamentals,
    .k-fundamental-card,
    .k-fundamental-icon {
        background: Canvas;
        color: CanvasText;
        border-color: CanvasText;
        box-shadow: none;
    }
    .k-fundamentals-heading h2,
    .k-fundamentals-eyebrow,
    .k-fundamental-card h3,
    .k-fundamental-card p {
        color: CanvasText;
    }
}