/* ==========================================================================
   SPRAY FOAM INSULATION PAGE
   ========================================================================== */

/* ---------- Page Header (Mini-Hero) ---------- */
.sf-hero {
    position: relative;
    padding: calc(var(--header-height) + var(--space-2xl)) 0 var(--space-2xl);
    text-align: center;
    overflow: hidden;
    background-color: var(--color-dark);
}

.sf-hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background:
        radial-gradient(ellipse at 50% 40%, rgba(178, 34, 34, 0.16) 0%, transparent 70%),
        linear-gradient(180deg, rgba(18, 18, 42, 0.80) 0%, rgba(12, 12, 28, 0.86) 100%),
        url('../assets/images/spray-foam-worker-wide.webp') center 35%/cover no-repeat;
}

.sf-hero__inner {
    position: relative;
    z-index: 1;
}

/* Division branding kicker: carries the "Patriot Services Logical Insulation" name +
   tagline through from the homepage division-spotlight teaser so a visitor who clicks
   through actually lands on the same brand they just saw. */
.sf-hero__division {
    display: block;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--space-sm);
}

.sf-hero__division-tagline {
    display: inline-block;
    margin-left: 0.5em;
    font-style: italic;
    /* 0.4 alpha computed to ~3.8:1 on the dark hero, below the AA floor.
       0.6 matches .sf-hero__division above and clears it. */
    color: rgba(255, 255, 255, 0.6);
}

.sf-hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    /* Lightened red preserves contrast over the photo background. */
    color: #FF8A8A;
    margin-bottom: var(--space-md);
}

.sf-hero__heading {
    font-family: var(--font-heading);
    font-size: clamp(2.25rem, 5vw, 4rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: #FFFFFF;
    margin-bottom: var(--space-md);
}

.sf-hero__subline {
    font-family: var(--font-body);
    font-size: clamp(1rem, 2vw, 1.2rem);
    font-weight: 300;
    color: var(--color-text-light);
    max-width: 680px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

.sf-hero__actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ---------- Intro ---------- */
.sf-intro {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg);
}

.sf-intro__inner {
    max-width: 780px;
    margin: 0 auto;
    text-align: center;
}

.sf-intro__eyebrow {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.sf-intro__heading {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.sf-intro__body {
    font-family: var(--font-body);
    font-size: clamp(0.98rem, 1.5vw, 1.08rem);
    line-height: 1.8;
    color: var(--color-text-muted);
}

/* ---------- Benefits Grid ---------- */
.sf-benefits {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg-alt);
}

.sf-benefits__header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.sf-benefits__eyebrow {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.sf-benefits__heading {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--color-text);
}

.sf-benefits__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.sf-benefit {
    padding: var(--space-lg);
    border-radius: 6px;
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-accent);
    background-color: var(--color-bg);
}

.sf-benefit__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    margin-bottom: var(--space-md);
    color: var(--color-accent);
}

.sf-benefit__icon svg {
    width: 28px;
    height: 28px;
}

.sf-benefit h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.sf-benefit p {
    font-family: var(--font-body);
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: 0;
}

.sf-benefits__grid .reveal:nth-child(1) { transition-delay: 0s; }
.sf-benefits__grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.sf-benefits__grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.sf-benefits__grid .reveal:nth-child(4) { transition-delay: 0.24s; }
.sf-benefits__grid .reveal:nth-child(5) { transition-delay: 0.32s; }
.sf-benefits__grid .reveal:nth-child(6) { transition-delay: 0.4s; }

/* ---------- Open-Cell vs Closed-Cell Compare ---------- */
.sf-compare {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg);
}

.sf-compare__header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.sf-compare__eyebrow {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.sf-compare__heading {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--color-text);
}

.sf-compare__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.sf-compare__card {
    padding: var(--space-lg);
    border-radius: 6px;
    border: 1px solid var(--color-border);
    border-left: 4px solid transparent;
    background-color: var(--color-bg-alt);
}

/* Closed-cell vs open-cell get distinct accent colors (red vs blue) so the two
   cards read differently at a glance, not just via label text. */
.sf-compare__card--closed {
    border-left-color: var(--color-accent);
}

.sf-compare__card--open {
    border-left-color: var(--color-blue);
}

.sf-compare__card-label {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #FFFFFF;
    padding: 0.3em 0.75em;
    border-radius: 3px;
    margin-bottom: var(--space-md);
}

.sf-compare__card-label--closed {
    background-color: var(--color-accent);
}

.sf-compare__card-label--open {
    background-color: var(--color-blue);
}

.sf-compare__card h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.sf-compare__card p {
    font-family: var(--font-body);
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.sf-compare__card-best {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--color-text);
    font-weight: 500;
    margin-bottom: 0;
}

.sf-compare__card-best span {
    color: var(--color-text-muted);
    font-weight: 300;
    text-transform: none;
}

/* ---------- Stats ---------- */
.sf-stats {
    padding: var(--space-2xl) 0;
    text-align: center;
}

.sf-stats__header {
    margin-bottom: var(--space-xl);
}

.sf-stats__eyebrow {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    /* Lighter tint of --color-accent (#CC0000) for AA contrast on this dark background
       (raw accent computes ~2.9:1 against --color-dark, below the 4.5:1 floor). */
    color: #FF6B6B;
    margin-bottom: var(--space-md);
}

.sf-stats__heading {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: #FFFFFF;
    line-height: 1.15;
}

.sf-stats__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.sf-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg) var(--space-md);
    border-left: 1px solid var(--color-dark-border);
}

.sf-stat:first-child {
    border-left: none;
}

.sf-stat__value {
    font-family: var(--font-heading);
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1;
    color: #FFFFFF;
    letter-spacing: 0.01em;
    margin-bottom: var(--space-sm);
    display: inline-flex;
    align-items: baseline;
}

.sf-stat__plus {
    font-size: 0.5em;
    /* --color-accent computes to ~2.9:1 on the dark stats band; #FF6B6B is the
       established AA-safe red for dark sections in this theme. */
    color: #FF6B6B;
    margin-left: 0.15em;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.sf-stat__label {
    font-family: var(--font-body);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.4;
    text-align: center;
}

.sf-stats__footnote {
    font-family: var(--font-body);
    font-size: 0.8rem;
    color: var(--color-muted);
    max-width: 620px;
    margin: 0 auto;
}

/* ---------- Where It's Used Strip ---------- */
.sf-areas {
    padding: var(--space-lg) 0;
    background-color: var(--color-bg-alt);
}

.sf-areas__row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.sf-areas__label {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.sf-areas__items {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.sf-areas__item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text);
}

.sf-areas__item svg {
    width: 16px;
    height: 16px;
    color: var(--color-accent);
}

/* ---------- Equipment ---------- */
.sf-equipment {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg);
}

.sf-equipment__header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.sf-equipment__eyebrow {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.sf-equipment__heading {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--color-text);
}

.sf-equipment__card {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    max-width: 1040px;
    margin: 0 auto;
}

.sf-equipment__photo {
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.sf-equipment__photo img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

.sf-equipment__body p {
    font-family: var(--font-body);
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.sf-equipment__list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.sf-equipment__list li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-text);
}

.sf-equipment__list svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    color: var(--color-accent);
}

/* ---------- Trust / Certifications ---------- */
.sf-certs {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg-alt);
}

.sf-certs__header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.sf-certs__eyebrow {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.sf-certs__heading {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--color-text);
}

.sf-certs__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.sf-certs__card {
    padding: var(--space-lg) var(--space-md);
    border-radius: 6px;
    border: 1px solid var(--color-border);
    border-top: 4px solid var(--color-accent);
    background-color: var(--color-bg);
    text-align: center;
}

.sf-certs__card-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    height: 70px;
}

.sf-certs__card-badge img {
    max-height: 70px;
    width: auto;
    margin: 0 auto;
}

.sf-certs__card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 70px;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.sf-certs__card-icon svg {
    width: 36px;
    height: 36px;
}

.sf-certs__card h3 {
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.sf-certs__card p {
    font-family: var(--font-body);
    font-size: 0.82rem;
    line-height: 1.6;
    color: var(--color-text-muted);
    margin-bottom: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .sf-benefits__grid {
        grid-template-columns: 1fr 1fr;
    }

    .sf-compare__grid {
        grid-template-columns: 1fr;
    }

    .sf-stats__grid {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .sf-stat {
        border-left: none;
        border-top: 1px solid var(--color-dark-border);
        padding: var(--space-md);
    }

    .sf-stat:first-child {
        border-top: none;
    }

    .sf-certs__grid {
        grid-template-columns: 1fr 1fr;
    }

    .sf-equipment__card {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sf-hero {
        padding: var(--space-xl) 0 var(--space-xl);
    }

    .sf-hero__bg {
        background:
            radial-gradient(ellipse at 50% 40%, rgba(178, 34, 34, 0.16) 0%, transparent 70%),
            linear-gradient(180deg, rgba(18, 18, 42, 0.80) 0%, rgba(12, 12, 28, 0.86) 100%),
            url('../assets/images/spray-foam-worker-narrow.webp') 50% 35%/cover no-repeat;
    }

    .sf-hero__actions {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    .sf-hero__actions .btn {
        width: 100%;
        max-width: 320px;
    }

    .sf-intro,
    .sf-benefits,
    .sf-compare,
    .sf-stats,
    .sf-equipment,
    .sf-certs {
        padding: var(--space-xl) 0;
    }

    .sf-benefits__grid {
        grid-template-columns: 1fr;
    }

    .sf-areas__row {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .sf-areas__items {
        justify-content: center;
    }

    .sf-equipment__card {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .sf-equipment__list li {
        justify-content: center;
    }
}

@media (max-width: 560px) {
    .sf-certs__grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .sf-hero__eyebrow {
        font-size: 0.65rem;
    }

    .sf-hero__division {
        font-size: 0.75rem;
    }

    .sf-hero__division-tagline {
        display: block;
        margin-left: 0;
    }
}