/* Page-wide responsive refinements. */
/* ==========================================
   PAGE-WIDE RESPONSIVE SAFEGUARDS
========================================== */

/* Prevent horizontal overflow */
html {
    width: 100%;
    overflow-x: clip;
    scroll-behavior: smooth;
}

body {
    width: 100%;
    margin: 0;
    overflow-x: clip;
}

img {
    max-width: 100%;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

/* Keep all major sections within viewport */
.cf,
.cf-sec,
.ft,
.ft-top,
.ft-grid,
.about-hero {
    min-width: 0;
    max-width: 100%;
}

.cf-wrap,
.ft-wrap {
    width: min(1200px, 90%);
    margin-inline: auto;
}

/* ==========================================
   HERO SECTION
========================================== */

.about-hero {
    width: 100%;
    min-height: 520px;
    padding: 80px max(5%, calc((100vw - 1400px) / 2));
    box-sizing: border-box;
}

.about-hero-content {
    width: 100%;
    max-width: 48%;
}

.about-hero h1 {
    overflow-wrap: break-word;
}

.about-hero-content > p:not(.about-eyebrow) {
    max-width: 560px;
}

.about-hero-image {
    background-position: center;
    background-size: cover;
}

.about-hero::after {
    background-position: center;
    background-size: cover;
}

/* Move Hero Section Down */
.about-hero {
    margin-top: 80px;
}

/* ==========================================
   CERTIFICATION SECTION
========================================== */

.cf-cert-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
    gap: clamp(24px, 4vw, 52px);
}

.cf-fig,
.cf-card,
.cf-about-text,
.cf-points,
.cf-grid article {
    min-width: 0;
}

.cf-open img {
    display: block;
    width: 100%;
    height: auto;
}

.cf-card h2,
.cf-about h2,
.cf-head h2 {
    overflow-wrap: anywhere;
}

.cf-list dd {
    overflow-wrap: anywhere;
}

.cf-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* ==========================================
   HEADER / NAVIGATION
========================================== */

.header {
    max-width: 100%;
    box-sizing: border-box;
}

.header .logo-image {
    display: block;
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.nav-link {
    white-space: normal;
}

.products-menu {
    max-width: min(95vw, 1000px);
}

.products-menu-card img {
    object-fit: cover;
}

/* ==========================================
   FOOTER
========================================== */

.ft-grid {
    grid-template-columns:
        minmax(0, 1.3fr)
        minmax(0, 0.8fr)
        minmax(0, 1fr)
        minmax(0, 1.3fr);
    gap: 32px;
}

.ft-grid > * {
    min-width: 0;
}

.ft-contact a,
.ft-list a {
    overflow-wrap: anywhere;
}

.ft-cta > * {
    min-width: 0;
}

.ft-actions {
    flex-wrap: wrap;
}

.ft-btn {
    box-sizing: border-box;
}

/* ==========================================
   TABLETS — 1000px
========================================== */

@media (max-width: 1000px) {

    .about-hero {
        min-height: 470px;
        padding: 70px 5%;
    }

    .about-hero-content {
        max-width: 55%;
    }

    .about-hero::after {
        right: 0;
        width: 52%;
    }

    .cf-cert-grid {
        grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
        gap: 28px;
    }

    .cf-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .cf-about-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 32px;
    }

    .ft-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 36px 28px;
    }

    .ft-cta {
        padding: 32px;
    }
}

/* ==========================================
   MOBILE NAVIGATION — 760px
========================================== */

@media (max-width: 760px) {

    .header {
        gap: 12px;
    }

    /*
      Your existing site-interactions.js should control
      the mobile navigation and menu-toggle button.
      Do not force .nav to display or hide here because
      that could conflict with your existing JS.
    */

    .nav-link {
        font-size: 15px;
    }

    .search-btn {
        flex-shrink: 0;
    }

    .quote-btn {
        white-space: nowrap;
    }

    .about-hero {
        min-height: 440px;
        padding: 70px 6% 100px;
    }

    .about-hero-content {
        max-width: 62%;
    }

    .about-hero h1 {
        font-size: clamp(34px, 6vw, 48px);
    }

    .about-hero::after {
        top: 15%;
        width: 50%;
        height: 68%;
        border-radius: 100px 0 0 100px;
    }

    .about-hero-stamp {
        right: 6%;
        bottom: 24px;
    }

    .cf-sec {
        padding-block: 48px;
    }

    .cf-cert-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 28px;
    }

    .cf-fig {
        position: static;
        width: min(100%, 420px);
        margin-inline: auto;
    }

    .cf-card h2 {
        font-size: clamp(28px, 6vw, 40px);
    }

    .cf-about-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .cf-points li {
        padding: 16px;
    }

    .cf-quote {
        align-items: flex-start;
        flex-direction: column;
    }

    .ft-top {
        padding-top: 44px;
    }

    .ft-cta {
        padding: 26px 22px;
        border-radius: 20px;
    }

    .ft-cta h2 {
        font-size: clamp(26px, 6vw, 34px);
    }

    .ft-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 30px 22px;
        padding-block: 42px;
    }
}

/* ==========================================
   SMALL PHONES — 520px
========================================== */

@media (max-width: 520px) {

    .cf-wrap,
    .ft-wrap {
        width: 90%;
    }

    /* Hero */
    .about-hero {
        min-height: 500px;
        align-items: flex-start;
        padding: 100px 6% 110px;
    }

    .about-hero-content {
        max-width: 100%;
    }

    .about-eyebrow {
        gap: 8px;
        font-size: 10px;
        letter-spacing: 0.12em;
        flex-wrap: wrap;
    }

    .about-hero h1 {
        margin-top: 16px;
        font-size: clamp(34px, 9vw, 44px);
        line-height: 1.06;
    }

    .about-hero-content > p:not(.about-eyebrow) {
        margin-top: 16px;
        font-size: 14px;
        line-height: 1.7;
    }

    .about-hero-link {
        margin-top: 20px;
        gap: 12px;
        font-size: 14px;
    }

    .about-hero-link span {
        width: 36px;
        height: 36px;
    }

    .about-hero::after {
        top: auto;
        right: -12%;
        bottom: 0;
        width: 76%;
        height: 35%;
        border-radius: 90px 0 0 0;
        opacity: 0.3;
    }

    .about-hero-stamp {
        right: 6%;
        bottom: 20px;
        gap: 10px;
    }

    .about-hero-stamp strong {
        font-size: 30px;
    }

    .about-hero-stamp span {
        font-size: 9px;
    }

    /* Certificate details */
    .cf-sec {
        padding-block: 40px;
    }

    .cf-badge {
        font-size: 13px;
        padding: 8px 12px;
    }

    .cf-list > div {
        grid-template-columns: 38px minmax(0, 1fr);
        column-gap: 12px;
        padding-block: 14px;
    }

    .cf-list i {
        width: 38px;
        height: 38px;
        font-size: 14px;
    }

    .cf-list dt {
        font-size: 13px;
    }

    .cf-list dd {
        font-size: 15px;
    }

    .cf-list dd small {
        font-size: 12px;
    }

    .cf-actions {
        flex-direction: column;
    }

    .cf-actions > * {
        width: 100%;
    }

    .cf-btn,
    .cf-ghost {
        min-height: 48px;
    }

    /* Quality information cards */
    .cf-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 14px;
    }

    .cf-grid article {
        padding: 22px;
    }

    .cf-points li {
        grid-template-columns: 42px minmax(0, 1fr);
        gap: 12px;
        padding: 14px;
    }

    .cf-points i {
        width: 42px;
        height: 42px;
        font-size: 16px;
    }

    .cf-points b {
        font-size: 16px;
    }

    .cf-points span {
        font-size: 14px;
    }

    .cf-quote {
        padding: 24px 20px;
        border-radius: 18px;
    }

    .cf-quote p {
        font-size: 23px;
    }

    .cf-quote span {
        font-size: 13px;
    }

    /* Footer */
    .ft-cta {
        padding: 24px 18px;
    }

    .ft-cta p {
        font-size: 14px;
    }

    .ft-actions {
        display: grid;
        grid-template-columns: minmax(0, 1fr);
        width: 100%;
    }

    .ft-btn {
        width: 100%;
        justify-content: center;
        padding: 14px 16px;
        font-size: 14px;
    }

    .ft-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 30px;
        padding-top: 36px;
        padding-bottom: 34px;
    }

    .ft-brand p {
        max-width: 100%;
        font-size: 14px;
    }

    .ft-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding-top: 18px;
        padding-bottom: 90px;
        font-size: 12px;
    }

    /* Certificate fullscreen viewer */
    .cf-tools {
        padding: 12px;
    }

    .cf-stage {
        padding-inline: 10px;
    }

    .cf-stage img {
        max-width: 100%;
        max-height: calc(100dvh - 90px);
    }

    /* Floating WhatsApp */
    .ft-wa {
        width: 52px;
        height: 52px;
        right: 14px;
        bottom: 14px;
        font-size: 27px;
    }

    .ft-wa-tooltip {
        display: none;
    }
}

/* ==========================================
   VERY SMALL PHONES — 360px
========================================== */

@media (max-width: 360px) {

    .about-hero {
        padding-inline: 5%;
    }

    .about-hero h1 {
        font-size: 32px;
    }

    .cf-wrap,
    .ft-wrap {
        width: 92%;
    }

    .cf-card h2,
    .cf-about h2,
    .cf-head h2 {
        font-size: 27px;
    }

    .cf-points li {
        grid-template-columns: 36px minmax(0, 1fr);
        gap: 10px;
        padding: 12px;
    }

    .cf-points i {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }

    .ft-cta {
        padding-inline: 16px;
    }
}

/* ==========================================
   ACCESSIBILITY
========================================== */

@media (prefers-reduced-motion: reduce) {

    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Certification content and certificate viewer. */
.cf {
            --navy: #0a2240;
            --blue: #0b6aa8;
            --mint: #a9e7df;
            --tint: #e3f5f3;
            --ink: #0b1f36;
            --mut: #52677c;
            --line: #d6e4ea;
            --hdr: 84px
        }

        .cf * {
            box-sizing: border-box
        }

        .cf-wrap {
            width: min(1200px, 90%);
            margin-inline: auto
        }

        .cf-sec {
            padding: clamp(48px, 7vw, 80px) 0;
            background: #fff;
            color: var(--ink);
            font-family: 'Outfit', system-ui, -apple-system, 'Segoe UI', sans-serif;
            scroll-margin-top: var(--hdr)
        }

        .cf-sec :focus-visible,
        .cf-dialog :focus-visible {
            outline: 3px solid var(--blue);
            outline-offset: 3px
        }

        .cf-sec a {
            color: var(--blue)
        }

        .cf-sec h2,
        .cf-sec h3 {
            margin: 0;
            font-weight: 600;
            letter-spacing: -.03em
        }

        /* certificate + details */
        .cf-cert-grid {
            display: grid;
            grid-template-columns: minmax(0, clamp(260px, 36vw, 440px)) minmax(0, 1fr);
            gap: clamp(28px, 5vw, 56px);
            align-items: start
        }

        .cf-fig {
            margin: 0;
            position: sticky;
            top: calc(var(--hdr) + 20px)
        }

        .cf-open {
            position: relative;
            display: block;
            width: 100%;
            padding: 0;
            border: 1px solid var(--line);
            border-radius: 18px;
            overflow: hidden;
            background: #fff;
            cursor: zoom-in;
            box-shadow: 0 18px 44px rgba(10, 34, 64, .12)
        }

        .cf-open img {
            display: block;
            width: 100%;
            height: auto
        }

        .cf-open span {
            position: absolute;
            right: 12px;
            bottom: 12px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 15px;
            border-radius: 999px;
            background: var(--navy);
            color: #fff;
            font: 500 14px 'Outfit', system-ui, sans-serif;
            transition: background .2s
        }

        .cf-open:hover span {
            background: var(--blue)
        }

        .cf-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 8px 16px;
            border-radius: 999px;
            background: var(--tint);
            color: #0a5d75;
            font-size: 15px;
            font-weight: 600
        }

        .cf-card h2 {
            margin-top: 18px;
            font-size: clamp(28px, 3.6vw, 44px);
            line-height: 1.05
        }

        .cf-card>p {
            margin: 12px 0 0;
            font-size: clamp(16px, 1.6vw, 17px);
            line-height: 1.6;
            color: var(--mut)
        }

        .cf-list {
            display: grid;
            margin: 26px 0 0
        }

        .cf-list>div {
            display: grid;
            grid-template-columns: 44px minmax(0, 1fr);
            column-gap: 16px;
            padding: 16px 0;
            border-top: 1px solid var(--line)
        }

        .cf-list>div:last-child {
            border-bottom: 1px solid var(--line)
        }

        .cf-list i {
            grid-row: span 2;
            display: grid;
            place-items: center;
            width: 44px;
            height: 44px;
            border-radius: 13px;
            background: var(--navy);
            color: var(--mint);
            font-size: 17px
        }

        .cf-list dt {
            font-size: 14px;
            color: var(--mut)
        }

        .cf-list dd {
            margin: 2px 0 0;
            font-size: clamp(16px, 1.6vw, 17px);
            font-weight: 500;
            line-height: 1.4;
            overflow-wrap: anywhere
        }

        .cf-list dd small {
            display: block;
            margin-top: 4px;
            font-size: 14px;
            font-weight: 400;
            line-height: 1.5;
            color: var(--mut)
        }

        .cf-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 26px
        }

        .cf-btn,
        .cf-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 50px;
            border-radius: 999px;
            font: 500 15px 'Outfit', system-ui, sans-serif;
            text-decoration: none;
            cursor: pointer;
            transition: background .2s, color .2s, border-color .2s
        }

        .cf-btn {
            padding: 0 26px;
            border: 0;
            background: var(--navy);
            color: #fff;
            font-weight: 600
        }

        .cf-btn:hover {
            background: var(--blue)
        }

        .cf-sec a.cf-ghost {
            padding: 0 22px;
            border: 1px solid #b9ccd6;
            background: #fff;
            color: var(--navy)
        }

        .cf-sec a.cf-ghost:hover {
            background: var(--navy);
            border-color: var(--navy);
            color: var(--mint)
        }

        /* shared section heading */
        .cf-head {
            max-width: 640px;
            margin-bottom: clamp(24px, 4vw, 36px)
        }

        .cf-head h2 {
            font-size: clamp(30px, 4.4vw, 48px);
            line-height: 1.04
        }

        .cf-head p {
            margin: 12px 0 0;
            font-size: clamp(16px, 1.6vw, 17px);
            line-height: 1.6;
            color: var(--mut)
        }

        /* about the standard */
        .cf-about {
            background: #eef6f8
        }

        .cf-about-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
            gap: clamp(28px, 5vw, 64px);
            align-items: start
        }

        .cf-about h2 {
            font-size: clamp(30px, 4.4vw, 48px);
            line-height: 1.04
        }

        .cf-about-text p {
            margin: 16px 0 0;
            font-size: clamp(16px, 1.6vw, 18px);
            line-height: 1.7;
            color: var(--mut)
        }

        .cf-points {
            display: grid;
            gap: 12px;
            margin: 0;
            padding: 0;
            list-style: none
        }

        .cf-points li {
            display: grid;
            grid-template-columns: 48px minmax(0, 1fr);
            column-gap: 16px;
            align-items: start;
            padding: 18px;
            border: 1px solid var(--line);
            border-radius: 16px;
            background: #fff
        }

        .cf-points i {
            grid-row: span 2;
            display: grid;
            place-items: center;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--navy);
            color: var(--mint);
            font-size: 18px
        }

        .cf-points b {
            display: block;
            font-size: 18px;
            font-weight: 600;
            letter-spacing: -.01em
        }

        .cf-points span {
            margin-top: 2px;
            font-size: 15px;
            line-height: 1.55;
            color: var(--mut)
        }

        /* what it means */
        .cf-grid article {
            position: relative;
            padding: 24px 22px 26px;
            border: 1px solid var(--line);
            border-radius: 18px;
            background: #fff;
            transition: border-color .2s, box-shadow .2s
        }

        .cf-grid article:hover {
            border-color: var(--blue);
            box-shadow: 0 12px 30px rgba(10, 34, 64, .09)
        }

        .cf-grid i {
            display: grid;
            place-items: center;
            width: 52px;
            height: 52px;
            margin-bottom: 18px;
            border-radius: 15px;
            background: var(--navy);
            color: var(--mint);
            font-size: 20px
        }

        .cf-grid h3 {
            font-size: clamp(20px, 2vw, 23px);
            line-height: 1.15
        }

        .cf-grid p {
            margin: 10px 0 0;
            font-size: 15px;
            line-height: 1.6;
            color: var(--mut)
        }

        .cf-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 16px
        }

        .cf-quote {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 14px 28px;
            margin-top: clamp(24px, 4vw, 36px);
            padding: clamp(26px, 4vw, 40px);
            border-radius: 24px;
            color: #fff;
            background: radial-gradient(circle at 100% 0, rgba(169, 231, 223, .22), transparent 55%), var(--navy)
        }

        .cf-quote p {
            display: flex;
            gap: 14px;
            margin: 0;
            font-size: clamp(22px, 3vw, 32px);
            font-weight: 600;
            line-height: 1.2;
            letter-spacing: -.02em
        }

        .cf-quote p i {
            margin-top: 4px;
            font-size: .8em;
            color: var(--mint)
        }

        .cf-quote span {
            font-size: 15px;
            color: var(--mint)
        }

        /* full-screen viewer */
        .cf-dialog {
            width: 100%;
            height: 100%;
            max-width: none;
            max-height: none;
            margin: 0;
            padding: 0;
            border: 0;
            background: rgba(7, 26, 53, .95);
            color: #fff
        }

        .cf-dialog:not([open]) {
            display: none
        }

        .cf-dialog[open] {
            display: flex;
            flex-direction: column
        }

        .cf-dialog :focus-visible {
            outline-color: var(--mint)
        }

        .cf-tools {
            display: flex;
            justify-content: flex-end;
            gap: 10px;
            padding: max(14px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) 14px 16px
        }

        .cf-tools button {
            display: grid;
            place-items: center;
            width: 44px;
            height: 44px;
            border: 1px solid rgba(255, 255, 255, .3);
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
            color: #fff;
            font-size: 17px;
            cursor: pointer;
            transition: background .2s, color .2s
        }

        .cf-tools button:hover {
            background: var(--mint);
            border-color: var(--mint);
            color: var(--navy)
        }

        .cf-stage {
            flex: 1;
            min-height: 0;
            display: grid;
            overflow: auto;
            padding: 0 16px max(16px, env(safe-area-inset-bottom))
        }

        .cf-stage img {
            display: block;
            margin: auto;
            width: auto;
            height: auto;
            max-width: 100%;
            max-height: calc(100dvh - 100px);
            object-fit: contain;
            border-radius: 6px;
            background: #fff;
            cursor: zoom-in
        }

        .cf-dialog.is-zoom .cf-stage img {
            max-width: none;
            max-height: none;
            width: min(1400px, 260vw);
            cursor: zoom-out
        }

        @media(max-width:900px) {
            .cf-about-grid {
                grid-template-columns: minmax(0, 1fr)
            }
        }

        /* tablet */
        @media(max-width:1000px) {
            .cf-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr))
            }
        }

        /* small tablet and phone: certificate stacks above its details */
        @media(max-width:760px) {
            .cf-cert-grid {
                grid-template-columns: minmax(0, 1fr)
            }

            .cf-fig {
                position: static;
                max-width: 420px;
                margin-inline: auto
            }
        }

        @media(max-width:560px) {
            .cf-grid {
                grid-template-columns: minmax(0, 1fr)
            }

            .cf-actions>* {
                width: 100%
            }

            .cf-list>div {
                grid-template-columns: 40px minmax(0, 1fr);
                column-gap: 14px
            }

            .cf-list i {
                width: 40px;
                height: 40px;
                font-size: 15px
            }

            .cf-quote {
                border-radius: 20px
            }
        }

        @media(prefers-reduced-motion:reduce) {
            .cf * {
                transition: none !important
            }
        }