/* P26M — features section.
 * 4-up grid of capability cards. First card is "hero" with extra emphasis.
 */

.features {
    padding-block: var(--section-pad-y);
    position: relative;
}

.features__head {
    margin-bottom: var(--space-8);
    max-width: 720px;
}

.features__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    /* Cap dense card-grid width independently of the (wider) page container
       so cards don't outgrow their left-aligned body copy on ultra-wide
       screens — extra room goes to the right margin instead of the cards. */
    max-width: 1320px;
}

@media (min-width: 640px) {
    .features__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-5);
    }
}

@media (min-width: 1024px) {
    .features__grid {
        grid-template-columns: 1.4fr 1fr 1fr;
        grid-template-rows: auto auto;
        grid-template-areas:
            "primary secondary tertiary"
            "primary quaternary quaternary";
        gap: var(--space-5);
    }
    .feature--primary     { grid-area: primary; }
    .feature--secondary   { grid-area: secondary; }
    .feature--tertiary    { grid-area: tertiary; }
    .feature--quaternary  { grid-area: quaternary; }
}

.feature {
    position: relative;
    padding: var(--space-7);
    background: var(--color-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    isolation: isolate;
    transition: border-color var(--dur-base) var(--ease-out),
                transform var(--dur-base) var(--ease-out);
}
.feature:hover {
    border-color: var(--color-border-strong);
    transform: translateY(-2px);
}

.feature__icon-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: rgba(115, 196, 75, 0.08);
    color: var(--color-brand);
    margin-bottom: var(--space-5);
    border: 1px solid rgba(115, 196, 75, 0.20);
}
.feature__icon-wrap .p26m-icon { width: 24px; height: 24px; }

.feature__title {
    font-family: var(--font-display);
    font-size: var(--fs-xl);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin-bottom: var(--space-3);
}

.feature__body {
    color: var(--color-text-secondary);
    font-size: var(--fs-base);
    line-height: 1.6;
    max-width: 38ch;
}

/* Primary card has a tinted background, decorative routing illustration. */
.feature--primary {
    background:
        radial-gradient(ellipse at 100% 100%, rgba(115, 196, 75, 0.14) 0%, transparent 50%),
        radial-gradient(ellipse at 0% 0%, rgba(59, 91, 255, 0.08) 0%, transparent 50%),
        linear-gradient(180deg, var(--color-elevated) 0%, var(--color-base) 100%);
    border-color: rgba(115, 196, 75, 0.25);
}

.feature--primary .feature__title { font-size: var(--fs-2xl); }
.feature--primary .feature__body  { font-size: var(--fs-lg); max-width: 42ch; }

.feature--primary .feature__icon-wrap {
    background: rgba(115, 196, 75, 0.16);
    border-color: rgba(115, 196, 75, 0.35);
    width: 56px;
    height: 56px;
}
.feature--primary .feature__icon-wrap .p26m-icon { width: 28px; height: 28px; }

/* Tertiary card uses accent (blue) tint. */
.feature--tertiary {
    background:
        radial-gradient(ellipse at 100% 0%, rgba(59, 91, 255, 0.10) 0%, transparent 60%),
        var(--color-elevated);
    border-color: rgba(59, 91, 255, 0.20);
}
.feature--tertiary .feature__icon-wrap {
    background: rgba(59, 91, 255, 0.12);
    color: var(--color-accent-strong);
    border-color: rgba(59, 91, 255, 0.28);
}

/* Mini schematic inside primary card */
.feature__diagram {
    position: absolute;
    right: -40px;
    bottom: -40px;
    width: 240px;
    height: 240px;
    opacity: 0.85;
    pointer-events: none;
    background: radial-gradient(circle, rgba(115, 196, 75, 0.10) 0%, transparent 60%);
    border-radius: 50%;
}
.feature__diagram::before,
.feature__diagram::after {
    content: "";
    position: absolute;
    inset: 30%;
    border: 1px dashed rgba(115, 196, 75, 0.30);
    border-radius: 50%;
}
.feature__diagram::after {
    inset: 15%;
    border-style: solid;
    border-color: rgba(115, 196, 75, 0.18);
}

/* Quaternary spans wider — emphasises "ship new methods fast". */
.feature--quaternary {
    background:
        radial-gradient(ellipse at 0% 50%, rgba(115, 196, 75, 0.08) 0%, transparent 50%),
        var(--color-elevated);
}
@media (min-width: 1024px) {
    .feature--quaternary {
        display: grid;
        grid-template-columns: auto 1fr;
        align-items: center;
        gap: var(--space-6);
        padding: var(--space-6) var(--space-7);
    }
    .feature--quaternary .feature__icon-wrap { margin-bottom: 0; }
    .feature--quaternary .feature__title { margin-bottom: var(--space-2); }
}