/* ============================================================
   DESIGN TOKENS & RESET – CAP Engineering Co.
   ============================================================ */
:root {
    --color-navy: #0B2545;
    --color-steel-blue: #1976C4;
    --color-charcoal: #1A1A1A;
    --color-white: #FFFFFF;
    --color-accent: #E85D25;
    --color-light-gray: #F4F4F4;
    --color-cool-gray: #F0F3F7;
    --color-medium-gray: #666666;
    --color-border: #E0E0E0;

    --font-heading: 'Barlow Condensed', 'Oswald', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    --space-xs: 0.25rem; --space-sm: 0.5rem; --space-md: 1rem;
    --space-lg: 2rem; --space-xl: 4rem; --space-2xl: 6rem;

    --radius-sm: 2px; --radius-md: 4px;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-card: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

    --container-max: 1200px;

    --z-sticky-header: 1000;
    --z-mobile-backdrop: 2000;
    --z-side-nav: 2100;
    --z-lightbox: 3000;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html { scroll-behavior: smooth; font-size: 100%; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-body); color: var(--color-charcoal);
    background-color: var(--color-white); line-height: 1.7;
    -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading); font-weight: 700;
    line-height: 1.2; margin-bottom: var(--space-sm); color: var(--color-navy);
    letter-spacing: -0.01em;
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; font-weight: 600; }
p { margin-bottom: var(--space-md); }
a { color: var(--color-steel-blue); text-decoration: none; transition: color var(--transition-fast); }
a:hover, a:focus { color: var(--color-accent); text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ── BUTTONS ── */
.btn {
    display: inline-block; padding: 0.75em 1.5em;
    font-family: var(--font-heading); font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.05em;
    border: 2px solid transparent; border-radius: var(--radius-md);
    transition: all var(--transition-smooth); cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}
.btn--primary { background-color: var(--color-navy); color: var(--color-white); }
.btn--primary:hover { background-color: var(--color-steel-blue); color: var(--color-white); text-decoration: none; box-shadow: 0 8px 16px rgba(11, 37, 69, 0.15); transform: translateY(-1px); }
.btn--accent { background-color: var(--color-accent); color: var(--color-white); }
.btn--accent:hover { background-color: #d14a1f; color: var(--color-white); text-decoration: none; box-shadow: 0 8px 16px rgba(232, 93, 37, 0.25); transform: translateY(-1px); }
.btn--outline { background: transparent; color: var(--color-white); border-color: var(--color-white); }
.btn--outline:hover { background-color: var(--color-white); color: var(--color-navy); box-shadow: 0 4px 12px rgba(255,255,255,0.3); }

/* ── CONTAINER & SECTIONS ── */
.container { max-width: var(--container-max); margin-left: auto; margin-right: auto; padding-left: var(--space-md); padding-right: var(--space-md); }
.section { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
.section--light { background-color: var(--color-light-gray); }
.section__heading { margin-bottom: var(--space-lg); text-align: left; }
.section__subtitle { display: block; font-family: var(--font-heading); font-size: 1.1rem; color: var(--color-accent); letter-spacing: 0.04em; text-transform: uppercase; margin-top: calc(-1 * var(--space-sm)); margin-bottom: var(--space-lg); }

/* ── UTILITY CLASSES ── */
.mt-large { margin-top: 40px; }
.mt-sm { margin-top: 0.5rem; }
.body-scroll-lock { overflow: hidden; }

/* Product sub-section headings: semantic h3 styled like section h2 */
.products .section__heading h3 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    letter-spacing: -0.01em;
    font-weight: 700;
}

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }
::selection { background-color: var(--color-accent); color: var(--color-white); }

/* ── HEADER ── */
.site-header {
    position: sticky; top: 0; z-index: var(--z-sticky-header);
    background-color: var(--color-white); border-bottom: 1px solid var(--color-border);
    transition: padding var(--transition-smooth), box-shadow var(--transition-smooth);
    padding-top: var(--space-sm); padding-bottom: var(--space-sm);
}
.site-header.scrolled { padding-top: var(--space-xs); padding-bottom: var(--space-xs); box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); }
.site-branding { display: flex; align-items: center; }
.site-logo { max-height: 50px; width: auto; object-fit: contain; }
.header-contact { display: flex; align-items: center; gap: var(--space-md); margin-left: auto; }
.header-phone { font-family: var(--font-heading); font-weight: 600; color: var(--color-navy); font-size: 1.1rem; white-space: nowrap; }
.header-whatsapp { color: #25D366; display: flex; align-items: center; }
.header-whatsapp svg { width: 28px; height: 28px; }

.menu-toggle { display: block; background: none; border: none; cursor: pointer; padding: var(--space-sm); margin-left: var(--space-md); }
.menu-icon { position: relative; }
.menu-icon, .menu-icon::before, .menu-icon::after { display: block; width: 24px; height: 2px; background-color: var(--color-navy); transition: transform var(--transition-fast); }
.menu-icon::before, .menu-icon::after { content: ""; position: absolute; }
.menu-icon::before { transform: translateY(-7px); }
.menu-icon::after  { transform: translateY(7px); }

/* ── SIDE NAVIGATION ── */
.side-nav {
    position: fixed; top: 0; right: 0; height: 100vh; width: 300px; max-width: 80vw;
    background: var(--color-white); z-index: var(--z-side-nav);
    transform: translateX(100%); transition: transform var(--transition-smooth);
    box-shadow: -4px 0 12px rgba(0,0,0,0.1); overflow-y: auto;
    padding: var(--space-xl) var(--space-lg);
}
.side-nav--open { transform: translateX(0); }
.side-nav__close { position: absolute; top: var(--space-md); right: var(--space-md); background: none; border: none; font-size: 2rem; line-height: 1; cursor: pointer; color: var(--color-navy); transition: color var(--transition-fast); }
.side-nav__close:hover { color: var(--color-accent); }
.side-nav__list { display: flex; flex-direction: column; gap: var(--space-sm); margin-top: var(--space-xl); }
.side-nav__list a { font-family: var(--font-heading); text-transform: uppercase; font-weight: 600; font-size: 1.1rem; letter-spacing: 0.04em; color: var(--color-navy); padding: var(--space-sm) 0; display: block; border-bottom: 1px solid var(--color-border); transition: color var(--transition-fast); }
.side-nav__list a:hover { color: var(--color-accent); text-decoration: none; }
.side-nav__sublist { margin-left: var(--space-md); margin-top: calc(-1 * var(--space-xs)); margin-bottom: var(--space-xs); display: flex; flex-direction: column; }
.side-nav__sublist a { font-size: 0.95rem; font-weight: 500; text-transform: none; letter-spacing: 0.02em; padding: var(--space-xs) 0; border-bottom: none; }
.side-nav__sublist li:last-child a { padding-bottom: var(--space-sm); border-bottom: 1px solid var(--color-border); }

/* backdrop */
.mobile-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: var(--z-mobile-backdrop); opacity: 0; visibility: hidden; transition: opacity var(--transition-smooth), visibility var(--transition-smooth); }
.mobile-backdrop.active { opacity: 1; visibility: visible; }

/* ── HERO ── */
.hero { background-color: var(--color-navy); overflow: hidden; min-height: 85vh; display: flex; align-items: center; }
.hero__container { display: flex; align-items: center; width: 100%; max-width: var(--container-max); margin: 0 auto; padding-left: var(--space-md); padding-right: 0; }
.hero__content { flex: 1 1 50%; padding: var(--space-xl) 0; padding-right: var(--space-lg); z-index: 1; }
.hero__title { font-size: clamp(2.2rem, 6vw, 4rem); color: var(--color-white); line-height: 1.1; margin-bottom: var(--space-sm); }
.hero__subtitle { font-family: var(--font-heading); font-size: 1.4rem; color: var(--color-accent); margin-bottom: var(--space-lg); letter-spacing: 0.04em; text-transform: uppercase; }
.hero__cta { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.hero__visual { flex: 1 1 50%; position: relative; height: 85vh; clip-path: polygon(15% 0, 100% 0, 100% 100%, 0 100%); overflow: hidden; }
.hero__img { width: 100%; height: 100%; object-fit: cover; object-position: center; }

/* ── ABOUT ── */
.about { background-color: var(--color-white); }
.about__grid { display: flex; gap: var(--space-xl); align-items: flex-start; }
.about__text { flex: 2; }
.about__text h2 { margin-bottom: var(--space-md); }
.about__text p { margin-bottom: var(--space-md); }
.about__facts { flex: 1; display: flex; justify-content: center; background-color: var(--color-cool-gray); }
.fact-panel { background-color: var(--color-cool-gray); border-left: 4px solid var(--color-accent); padding: var(--space-lg); text-align: center; box-shadow: 0 2px 8px rgba(0,0,0,0.04); }
.fact-panel__badge { max-width: 120px; margin: 0 auto var(--space-md); }
.fact-panel__list { font-family: var(--font-heading); font-weight: 600; color: var(--color-navy); line-height: 1.8; }
.fact-panel__list li { margin-bottom: var(--space-sm); }
.fact-panel__list strong { color: var(--color-accent); font-weight: 700; }

/* ── CAPABILITIES ── */
.capabilities { background-color: var(--color-cool-gray); }
.capabilities__list { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }
.capabilities__list li { display: flex; align-items: flex-start; gap: var(--space-sm); font-weight: 600; font-size: 1.05rem; color: var(--color-navy); background: var(--color-white); padding: var(--space-md); border-left: 4px solid var(--color-accent); box-shadow: 0 1px 3px rgba(0,0,0,0.05); transition: border-left-color var(--transition-fast), box-shadow var(--transition-smooth), transform var(--transition-smooth); }
.capabilities__list li:hover { border-left-color: var(--color-steel-blue); box-shadow: 0 4px 12px rgba(0,0,0,0.08); transform: translateY(-2px); }
.cap-icon { flex-shrink: 0; color: var(--color-accent); margin-top: 2px; }

/* ── SERVICES ── */
.services { background-color: var(--color-white); }
.services__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }
.service-card { display: flex; align-items: flex-start; gap: var(--space-md); padding: var(--space-md); }
.service-card__num { flex-shrink: 0; font-weight: 700; font-size: 2.5rem; line-height: 1; color: var(--color-accent); min-width: 3rem; text-align: right; }
.service-card__body h3 { margin-bottom: var(--space-xs); font-size: 1.2rem; color: var(--color-navy); }
.service-card__body p { margin-bottom: 0; color: var(--color-charcoal); }

/* ── SECTORS ── */
.sectors__grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-md); }
.sector-item { text-align: center; padding: var(--space-lg) var(--space-md); }
.sector-item h3 { font-size: 1.1rem; color: var(--color-white); margin-bottom: var(--space-xs); }
.sector-item p { font-size: 0.9rem; color: rgba(255,255,255,0.8); line-height: 1.5; margin-bottom: 0; }
.sector-icon { color: var(--color-accent); margin-bottom: var(--space-sm); }

/* ── UNIFORM CARD (base) ── */
.card {
    background: var(--color-white); border: 1px solid var(--color-border);
    border-radius: var(--radius-md); padding: var(--space-md);
    box-shadow: 0 2px 6px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.02);
    transition: all var(--transition-card);
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(0,0,0,0.07), 0 2px 8px rgba(0,0,0,0.04); }
.card--dark { background: var(--color-navy); border-color: rgba(255,255,255,0.15); color: var(--color-white); }
.card--dark:hover { background: #0f2a4a; }

/* ── INSTRUMENT / PRODUCT CARDS ── */
.instrument-card { padding: var(--space-lg); text-align: center; }
.instrument-card img { height: 180px; object-fit: contain; margin: 0 auto var(--space-md); width: 100%; }
.instrument-card h4 { font-size: 1.2rem; margin-bottom: var(--space-sm); color: var(--color-navy); }
.instrument-card p { font-size: 0.95rem; color: var(--color-charcoal); margin-bottom: var(--space-md); }

.instrument-specs { list-style: none; padding: 0; margin-top: var(--space-sm); font-size: 0.85rem; color: var(--color-medium-gray); text-align: left; }
.instrument-specs li { position: relative; padding-left: 1.2em; margin-bottom: var(--space-xs); line-height: 1.5; }
.instrument-specs li::before { content: "•"; position: absolute; left: 0; color: var(--color-accent); font-weight: bold; }

.valve-card { text-align: center; }
.valve-card img { height: 180px; object-fit: contain; margin: 0 auto var(--space-sm); width: 100%; }
.valve-card h4 { font-size: 1.1rem; color: var(--color-navy); margin-bottom: 0; font-weight: 600; }

.product-card { text-align: center; }
.product-card img { height: 150px; object-fit: contain; margin-bottom: var(--space-sm); width: 100%; }
.product-card p { font-family: var(--font-heading); font-weight: 600; color: var(--color-navy); margin-bottom: 0; }

.partner-card { text-align: center; padding: var(--space-lg); }
.partner-card img { max-height: 80px; width: auto; margin: 0 auto var(--space-md); }
.partner-card h3 { margin-bottom: var(--space-xs); }
.partner-card p { font-size: 0.95rem; color: var(--color-charcoal); }

/* ── GRIDS ── */
.instrument-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-lg); margin-top: var(--space-lg); }
.valve-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-md); margin-top: var(--space-md); }
.product-gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-md); margin-top: var(--space-lg); }

/* ── DCS DIAGRAM ── */
.product-block--dcs { margin-bottom: var(--space-xl); }
.dcs-diagram { background: var(--color-white); border: 1px solid var(--color-border); padding: var(--space-lg); margin: var(--space-lg) 0; overflow-x: auto; }
.dcs-diagram__img { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.dcs-diagram figcaption { text-align: center; font-size: 0.9rem; color: var(--color-medium-gray); margin-top: var(--space-sm); }
.partner-callout { background: var(--color-cool-gray); border-left: 4px solid var(--color-accent); padding: var(--space-md) var(--space-lg); margin-top: var(--space-md); display: flex; align-items: center; gap: var(--space-md); flex-wrap: wrap; }
.partner-callout__logo { max-height: 40px; width: auto; }
.partner-callout p { margin-bottom: 0; font-size: 0.95rem; }

/* ── SCADA GALLERY ── */
.scada-gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-md); margin-top: var(--space-md); }
.scada-gallery figure { margin: 0; background: var(--color-white); border: 1px solid var(--color-border); overflow: hidden; transition: box-shadow var(--transition-smooth), transform var(--transition-smooth); }
.scada-gallery figure:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.08); transform: translateY(-2px); }
.scada-gallery img { width: 100%; height: 200px; object-fit: cover; object-position: center; display: block; cursor: pointer; }
.scada-gallery figcaption { padding: var(--space-sm) var(--space-md); font-size: 0.9rem; color: var(--color-medium-gray); background: var(--color-light-gray); font-family: var(--font-heading); font-weight: 600; text-align: center; }

/* ── BRAND STRIP ── */
.brand-strip { display: flex; flex-wrap: wrap; gap: var(--space-md); align-items: center; justify-content: center; margin-top: var(--space-md); padding: var(--space-md); background: var(--color-light-gray); border: 1px solid var(--color-border); }
.brand-item { display: flex; align-items: center; justify-content: center; background: var(--color-white); padding: var(--space-sm) var(--space-md); min-width: 100px; height: 60px; border: 1px solid var(--color-border); transition: transform var(--transition-fast), box-shadow var(--transition-fast); }
.brand-item:hover { transform: scale(1.02); box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
.brand-item img { max-height: 40px; width: auto; filter: grayscale(30%); transition: filter var(--transition-fast); }
.brand-item:hover img { filter: grayscale(0%); }

/* ── VALVE CATEGORIES ── */
.valve-category { margin-top: var(--space-xl); margin-bottom: var(--space-md); }
.valve-category h3 { color: var(--color-navy); border-bottom: 2px solid var(--color-border); padding-bottom: var(--space-xs); margin-bottom: var(--space-md); font-size: 1.4rem; }

/* ── CERTIFICATIONS ── */
.certifications { background: var(--color-navy); color: var(--color-white); text-align: center; }
.certifications .section__heading h2 { color: var(--color-white); }
.certification { max-width: 600px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: var(--space-md); }
.certification img { max-width: 160px; height: auto; border: 2px solid var(--color-accent); padding: var(--space-sm); background: var(--color-white); }
.certification p { font-family: var(--font-heading); font-weight: 600; font-size: 1.1rem; color: rgba(255,255,255,0.9); margin-bottom: 0; }

/* ── CONTACT ── */
.contact { background: var(--color-light-gray); }
.contact__grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); }
.contact__info { display: flex; flex-direction: column; gap: var(--space-lg); }
.office h3 { margin-bottom: var(--space-xs); color: var(--color-navy); }
.office address p { margin-bottom: var(--space-xs); line-height: 1.6; }
.office address a { color: var(--color-steel-blue); }
.office address a:hover { color: var(--color-accent); }
.contact__actions { display: flex; flex-direction: column; gap: var(--space-sm); margin-top: var(--space-sm); }
.contact__actions p { margin-bottom: 0; }
.map-wrapper { margin-bottom: var(--space-lg); border: 1px solid var(--color-border); }
.inquiry-form { background: var(--color-white); padding: var(--space-lg); border: 1px solid var(--color-border); box-shadow: 0 2px 8px rgba(0,0,0,0.04); }
.inquiry-form h3 { margin-bottom: var(--space-md); color: var(--color-navy); }
.inquiry-form input, .inquiry-form textarea { width: 100%; padding: 0.75em; margin-bottom: var(--space-md); border: 1px solid var(--color-border); font-family: var(--font-body); font-size: 1rem; transition: border-color var(--transition-fast); }
.inquiry-form input:focus, .inquiry-form textarea:focus { border-color: var(--color-steel-blue); outline: none; }
.inquiry-form button { width: 100%; font-size: 1rem; }

/* ── FOOTER ── */
.site-footer { background: var(--color-navy); color: var(--color-white); padding-top: var(--space-xl); }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1.2fr; gap: var(--space-xl); padding-bottom: var(--space-lg); }
.footer__col { display: flex; flex-direction: column; gap: var(--space-sm); }
.site-logo--footer { max-height: 50px; width: auto; object-fit: contain; margin-bottom: var(--space-sm); }
.footer__tagline { font-family: var(--font-heading); font-size: 1.1rem; margin-bottom: var(--space-xs); color: var(--color-accent); letter-spacing: 0.03em; }
.footer__iso { font-size: 0.9rem; color: rgba(255,255,255,0.7); margin-bottom: 0; }
.footer__col h4 { color: var(--color-white); margin-bottom: var(--space-sm); font-size: 1.1rem; text-transform: uppercase; letter-spacing: 0.06em; }
.footer__links li { margin-bottom: var(--space-xs); }
.footer__links a { color: rgba(255,255,255,0.8); font-size: 0.95rem; transition: color var(--transition-fast); }
.footer__links a:hover { color: var(--color-accent); text-decoration: none; }
.footer__sublist { margin-left: var(--space-md); margin-top: var(--space-xs); margin-bottom: var(--space-sm); }
.footer__sublist a { font-size: 0.85rem; color: rgba(255,255,255,0.65); }
.footer__sublist a:hover { color: var(--color-accent); }
.footer__contact-list { color: rgba(255,255,255,0.8); font-size: 0.95rem; }
.footer__contact-list li { margin-bottom: var(--space-xs); }
.footer__contact-list a { color: rgba(255,255,255,0.8); }
.footer__contact-list a:hover { color: var(--color-accent); }
.footer__social { display: flex; gap: var(--space-md); margin-top: var(--space-sm); }
.social-icon { color: var(--color-white); transition: color var(--transition-fast); }
.social-icon:hover { color: var(--color-accent); }
.footer__bottom { border-top: 1px solid rgba(255,255,255,0.15); padding: var(--space-md) 0; }
.footer__bottom-inner { display: flex; justify-content: space-between; align-items: center; }
.footer__copy { margin-bottom: 0; font-size: 0.9rem; color: rgba(255,255,255,0.6); }
.back-to-top { font-family: var(--font-heading); font-weight: 600; color: var(--color-accent); font-size: 0.9rem; text-transform: uppercase; transition: color var(--transition-fast); }
.back-to-top:hover { color: var(--color-white); text-decoration: none; }

/* ── SCROLL REVEAL ── */
.reveal-on-scroll { opacity: 0; transform: translateY(20px); transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1); }
.reveal-on-scroll.revealed { opacity: 1; transform: translateY(0); }

/* ── LIGHTBOX ── */
.lightbox-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(11, 37, 69, 0.95); display: flex; align-items: center; justify-content: center; z-index: var(--z-lightbox); opacity: 0; visibility: hidden; transition: opacity var(--transition-smooth), visibility var(--transition-smooth); }
.lightbox-overlay.active { opacity: 1; visibility: visible; }
.lightbox-image { max-width: 90%; max-height: 85vh; object-fit: contain; box-shadow: 0 4px 20px rgba(0,0,0,0.4); }
.lightbox-close { position: absolute; top: var(--space-md); right: var(--space-md); background: none; border: none; font-size: 2.5rem; color: var(--color-white); cursor: pointer; line-height: 1; padding: var(--space-xs); transition: color var(--transition-fast); }
.lightbox-close:hover { color: var(--color-accent); }
.lightbox-prev, .lightbox-next { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(255,255,255,0.15); border: none; color: var(--color-white); font-size: 2rem; padding: var(--space-sm) var(--space-md); cursor: pointer; transition: background var(--transition-fast); }
.lightbox-prev:hover, .lightbox-next:hover { background: var(--color-accent); }
.lightbox-prev { left: var(--space-md); }
.lightbox-next { right: var(--space-md); }

/* ── FORM MESSAGE ── */
.form-message { padding: var(--space-sm) var(--space-md); margin-bottom: var(--space-md); font-family: var(--font-heading); font-weight: 600; font-size: 0.95rem; display: none; }
.form-message.success { display: block; background: #e8f5e9; color: #2e7d32; border-left: 4px solid #2e7d32; }
.form-message.error { display: block; background: #fbe9e7; color: #c62828; border-left: 4px solid #c62828; }

/* ────────────────────────────────────────────────────────────
   RESPONSIVE
   ──────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .hero__visual { height: 60vh; }
    .sectors__grid { grid-template-columns: repeat(3, 1fr); }
    .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
    .footer__col:first-child { grid-column: 1 / -1; }
    .partners__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .hero__container { flex-direction: column; padding-right: var(--space-md); }
    .hero__content { padding-right: 0; text-align: center; }
    .hero__cta { justify-content: center; }
    .hero__visual { height: 300px; clip-path: none; }
    .about__grid { flex-direction: column; }
    .about__facts { width: 100%; }
    .capabilities__list { grid-template-columns: 1fr; }
    .services__grid { grid-template-columns: 1fr; }
    .sectors__grid { grid-template-columns: repeat(2, 1fr); }
    .contact__grid { grid-template-columns: 1fr; }
    .footer__grid { grid-template-columns: 1fr; gap: var(--space-lg); }
    .footer__bottom-inner { flex-direction: column; gap: var(--space-sm); text-align: center; }
    .partners__grid { grid-template-columns: 1fr; }
    .product-gallery { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
    .header-contact .header-phone { display: none; }
}
@media (max-width: 400px) {
    .site-logo { max-height: 40px; }
    .sectors__grid { grid-template-columns: 1fr; }
    .partners__grid { grid-template-columns: 1fr; }
    .lightbox-prev, .lightbox-next { font-size: 1.5rem; padding: var(--space-xs) var(--space-sm); }
    .product-gallery { grid-template-columns: 1fr; }
}
/* ── Uniform Product/Instrument Image Display Stage ── */
.instrument-card img,
.valve-card img,
.product-card img {
    background-color: var(--color-cool-gray);
    border: 1px solid rgba(11, 37, 69, 0.08);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    /* object-fit: contain and height remain from earlier rules */
}