/* ═══════════════════════════════════════════
   SENSYTEC — Concrete Intelligence Platform
   Global Brand System CSS
   ═══════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=DM+Sans:wght@300;400;500;600;700&display=swap');

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

:root {
  --brand-primary: #1A8FC4;
  --brand-primary-dark: #14729D;
  --brand-primary-light: #E8F4FA;
  --brand-primary-50: #F0F8FC;
  --brand-secondary: #5A5E66;
  --brand-secondary-light: #8A8D94;
  --brand-dark: #1C1E22;
  --brand-charcoal: #2D3036;
  --brand-slate: #4A4D54;
  --brand-gray-100: #F7F8F9;
  --brand-gray-200: #EDEEF0;
  --brand-gray-300: #D4D6DA;
  --brand-gray-400: #A8ABB2;
  --brand-white: #FFFFFF;
  --brand-off-white: #FAFBFC;
  --brand-accent-cool: #3A7CA5;
  --brand-accent-steel: #6B7A8D;
  --brand-success: #2E7D6F;
  --brand-warning: #C4881A;
  --font-heading: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 14px;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font-body); background: var(--brand-white); color: var(--brand-dark); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: var(--brand-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--brand-primary-dark); }
img { max-width: 100%; height: auto; }

/* Container: fluid with comfortable max-width that scales up for large monitors */
.container { max-width: 1400px; margin: 0 auto; padding: 0 clamp(20px, 4vw, 64px); width: 100%; }

/* ── NAV ── */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.97); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--brand-gray-200); height: 64px; display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(20px, 4vw, 64px); }
.nav-left { display: flex; align-items: center; gap: 36px; }
.nav-logo { font-family: var(--font-heading); font-weight: 700; font-size: 18px; color: var(--brand-secondary); letter-spacing: -0.3px; text-decoration: none; }
.nav-logo strong { color: var(--brand-primary); }
.nav-menu { display: flex; gap: 2px; list-style: none; }
.nav-menu > li { position: relative; }
.nav-menu > li > a { font-family: var(--font-body); font-size: 13.5px; font-weight: 500; color: var(--brand-secondary); padding: 8px 14px; border-radius: var(--radius-md); display: flex; align-items: center; gap: 4px; transition: all 0.2s; text-decoration: none; }
.nav-menu > li > a:hover, .nav-menu > li > a.active { background: var(--brand-gray-100); color: var(--brand-dark); }
.nav-menu > li > a .arrow { font-size: 10px; transition: transform 0.2s; }
/* Dropdown */
.nav-dropdown { position: absolute; top: 100%; left: 0; background: var(--brand-white); border: 1px solid var(--brand-gray-200); border-radius: var(--radius-lg); padding: 8px; min-width: 220px; box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(8px); transition: all 0.2s; z-index: 100; }
.nav-menu > li:hover .nav-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-menu > li:hover > a .arrow { transform: rotate(180deg); }
.nav-dropdown a { display: block; font-size: 13px; font-weight: 500; color: var(--brand-secondary); padding: 10px 14px; border-radius: var(--radius-md); transition: all 0.15s; text-decoration: none; }
.nav-dropdown a:hover { background: var(--brand-primary-light); color: var(--brand-primary); }
.nav-dropdown a small { display: block; font-size: 11px; font-weight: 400; color: var(--brand-gray-400); margin-top: 1px; }
.nav-right { display: flex; gap: 10px; align-items: center; }
.mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.mobile-toggle span { display: block; width: 22px; height: 2px; background: var(--brand-dark); margin: 5px 0; transition: all 0.3s; }

/* ── BUTTONS ── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-family: var(--font-heading); font-weight: 600; border: none; cursor: pointer; transition: all 0.2s; text-decoration: none; border-radius: var(--radius-md); white-space: nowrap; }
.btn-primary { background: var(--brand-primary); color: white; padding: 12px 26px; font-size: 14px; }
.btn-primary:hover { background: var(--brand-primary-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(26,143,196,0.25); color: white; }
.btn-secondary { background: var(--brand-white); color: var(--brand-dark); border: 1.5px solid var(--brand-gray-300); padding: 11px 26px; font-size: 14px; }
.btn-secondary:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.btn-ghost { background: transparent; color: var(--brand-primary); padding: 12px 16px; font-size: 14px; }
.btn-ghost:hover { background: var(--brand-primary-light); }
.btn-dark { background: var(--brand-dark); color: white; padding: 12px 26px; font-size: 14px; }
.btn-dark:hover { background: var(--brand-charcoal); color: white; }
.btn-sm { padding: 9px 18px; font-size: 13px; }
.btn-lg { padding: 16px 36px; font-size: 16px; }

/* ── SECTION DEFAULTS ── */
.section { padding: clamp(48px, 7vw, 80px) 0; width: 100%; }
.section-header { text-align: center; margin-bottom: clamp(32px, 4vw, 48px); }
.section-label { font-family: var(--font-heading); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; color: var(--brand-primary); margin-bottom: 8px; }
.section-title { font-family: var(--font-heading); font-size: clamp(24px, 3vw, 36px); font-weight: 700; color: var(--brand-dark); letter-spacing: -0.5px; margin-bottom: 10px; line-height: 1.2; }
.section-desc { font-size: clamp(14px, 1.3vw, 16px); color: var(--brand-secondary); max-width: 600px; margin: 0 auto; line-height: 1.7; }
.section-alt { background: var(--brand-gray-100); }

/* ── CARDS ── */
.card { background: var(--brand-white); border: 1px solid var(--brand-gray-200); border-radius: var(--radius-xl); padding: 28px; transition: all 0.25s; }
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card-icon { width: 48px; height: 48px; background: var(--brand-primary-light); border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.card-icon svg { width: 24px; height: 24px; color: var(--brand-primary); stroke: var(--brand-primary); }
.card h3 { font-family: var(--font-heading); font-size: 17px; font-weight: 700; color: var(--brand-dark); margin-bottom: 6px; }
.card p { font-size: 13.5px; color: var(--brand-secondary); line-height: 1.6; }

/* ── GRIDS ── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ── HERO COMMON ── */
.page-hero { margin-top: 64px; padding: clamp(48px, 8vw, 88px) 0 clamp(40px, 6vw, 72px); background: linear-gradient(170deg, var(--brand-white) 0%, var(--brand-primary-50) 45%, var(--brand-gray-100) 100%); position: relative; overflow: hidden; width: 100%; }
.page-hero::after { content: ''; position: absolute; top: -150px; right: -100px; width: 500px; height: 500px; background: radial-gradient(circle, rgba(26,143,196,0.05) 0%, transparent 70%); border-radius: 50%; }
.page-hero .container { position: relative; z-index: 2; }
.page-hero .hero-badge { display: inline-flex; align-items: center; gap: 6px; background: var(--brand-white); border: 1px solid var(--brand-gray-200); padding: 5px 14px; border-radius: 100px; font-family: var(--font-heading); font-size: 11px; font-weight: 600; color: var(--brand-primary); text-transform: uppercase; letter-spacing: 1.2px; margin-bottom: 18px; box-shadow: var(--shadow-sm); }
.page-hero h1 { font-family: var(--font-heading); font-size: clamp(32px, 4.5vw, 52px); font-weight: 800; line-height: 1.08; letter-spacing: -1.5px; color: var(--brand-dark); margin-bottom: 16px; }
.page-hero h1 span { color: var(--brand-primary); }
.page-hero .hero-desc { font-size: clamp(15px, 1.5vw, 18px); color: var(--brand-secondary); line-height: 1.7; max-width: 600px; margin-bottom: 28px; }
.page-hero .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ── TRUST BAR ── */
.trust-bar { padding: 36px 0; background: var(--brand-white); border-bottom: 1px solid var(--brand-gray-200); width: 100%; }
.trust-bar .container { display: flex; align-items: center; justify-content: center; gap: clamp(24px, 4vw, 56px); flex-wrap: wrap; }
.trust-item { text-align: center; }
.trust-number { font-family: var(--font-heading); font-size: 26px; font-weight: 800; color: var(--brand-primary); }
.trust-label { font-size: 12px; color: var(--brand-secondary); font-weight: 500; margin-top: 2px; }

/* ── CTA BLOCK ── */
.cta-block { padding: clamp(48px, 7vw, 80px) 0; width: 100%; }
.cta-card { background: var(--brand-dark); border-radius: 20px; padding: clamp(40px, 5vw, 64px) clamp(24px, 4vw, 48px); text-align: center; position: relative; overflow: hidden; }
.cta-card::before { content: ''; position: absolute; top: -100px; right: -100px; width: 400px; height: 400px; background: radial-gradient(circle, rgba(26,143,196,0.15) 0%, transparent 70%); border-radius: 50%; }
.cta-card h2 { font-family: var(--font-heading); font-size: clamp(22px, 2.5vw, 34px); font-weight: 700; color: var(--brand-white); margin-bottom: 12px; position: relative; z-index: 2; letter-spacing: -0.5px; }
.cta-card p { font-size: 16px; color: var(--brand-gray-400); margin-bottom: 28px; position: relative; z-index: 2; max-width: 480px; margin-left: auto; margin-right: auto; }
.cta-card .cta-actions { display: flex; justify-content: center; gap: 14px; position: relative; z-index: 2; flex-wrap: wrap; }

/* ── FOOTER ── */
.footer { padding: 48px 0 28px; background: var(--brand-gray-100); border-top: 1px solid var(--brand-gray-200); width: 100%; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: clamp(24px, 3vw, 40px); margin-bottom: 36px; }
.footer-brand { font-family: var(--font-heading); font-weight: 700; font-size: 17px; color: var(--brand-secondary); margin-bottom: 10px; text-decoration: none; }
.footer-brand strong { color: var(--brand-primary); }
.footer-desc { font-size: 13px; color: var(--brand-gray-400); line-height: 1.6; max-width: 280px; }
.footer-col h5 { font-family: var(--font-heading); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--brand-dark); margin-bottom: 14px; }
.footer-col a { display: block; font-size: 13px; color: var(--brand-secondary); padding: 3px 0; transition: color 0.2s; text-decoration: none; }
.footer-col a:hover { color: var(--brand-primary); }
.footer-bottom { border-top: 1px solid var(--brand-gray-200); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { font-size: 11.5px; color: var(--brand-gray-400); }
.footer-bottom a { color: var(--brand-gray-400); text-decoration: none; }
.footer-bottom a:hover { color: var(--brand-primary); }

/* ── FORM STYLES ── */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-family: var(--font-heading); font-size: 13px; font-weight: 600; color: var(--brand-dark); margin-bottom: 6px; }
.form-input, .form-textarea, .form-select { width: 100%; font-family: var(--font-body); font-size: 14px; color: var(--brand-dark); border: 1.5px solid var(--brand-gray-300); border-radius: var(--radius-md); padding: 12px 16px; background: var(--brand-white); transition: border-color 0.2s; }
.form-input:focus, .form-textarea:focus, .form-select:focus { outline: none; border-color: var(--brand-primary); box-shadow: 0 0 0 3px rgba(26,143,196,0.1); }
.form-input::placeholder, .form-textarea::placeholder { color: var(--brand-gray-400); }
.form-textarea { min-height: 120px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-note { font-size: 11px; color: var(--brand-gray-400); margin-top: 4px; }
.form-success { background: #E8F5F1; border: 1px solid rgba(46,125,111,0.2); border-radius: var(--radius-lg); padding: 20px 24px; text-align: center; display: none; }
.form-success h4 { font-family: var(--font-heading); font-size: 18px; font-weight: 700; color: var(--brand-success); margin-bottom: 4px; }
.form-success p { font-size: 14px; color: var(--brand-secondary); }

/* ── TESTIMONIALS ── */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial-card { background: var(--brand-gray-100); border: 1px solid var(--brand-gray-200); border-radius: var(--radius-xl); padding: 28px; }
.testimonial-card .quote-mark { font-family: Georgia, serif; font-size: 48px; color: var(--brand-primary); opacity: 0.2; line-height: 1; margin-bottom: 8px; }
.testimonial-card blockquote { font-size: 14px; color: var(--brand-dark); line-height: 1.6; font-style: italic; margin-bottom: 14px; }
.testimonial-card .author { font-size: 12px; color: var(--brand-secondary); }
.testimonial-card .author strong { color: var(--brand-dark); font-weight: 600; }

/* ── FEATURES LIST ── */
.feature-list { list-style: none; }
.feature-list li { font-size: 14px; color: var(--brand-slate); padding: 7px 0; display: flex; align-items: flex-start; gap: 10px; line-height: 1.5; }
.feature-list li .check { color: var(--brand-primary); font-weight: 700; flex-shrink: 0; }

/* ── COMPARISON TABLE ── */
.compare-table { width: 100%; border-collapse: collapse; background: var(--brand-white); border-radius: var(--radius-xl); overflow: hidden; border: 1px solid var(--brand-gray-200); }
.compare-table thead th { font-family: var(--font-heading); font-size: 13px; font-weight: 700; text-align: left; padding: 16px 20px; background: var(--brand-gray-100); border-bottom: 2px solid var(--brand-gray-200); color: var(--brand-dark); }
.compare-table thead th.highlight { background: var(--brand-primary-light); color: var(--brand-primary); }
.compare-table td { font-size: 13px; color: var(--brand-secondary); padding: 13px 20px; border-bottom: 1px solid var(--brand-gray-200); }
.compare-table td:first-child { font-family: var(--font-heading); font-weight: 600; color: var(--brand-dark); }
.compare-table td.highlight { background: var(--brand-primary-50); font-weight: 600; color: var(--brand-dark); }
.compare-table .check { color: var(--brand-primary); font-weight: 700; }
.compare-table .x { color: var(--brand-gray-400); }

/* ── FAQ ── */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item { background: var(--brand-white); border: 1px solid var(--brand-gray-200); border-radius: var(--radius-lg); margin-bottom: 10px; overflow: hidden; }
.faq-question { font-family: var(--font-heading); font-size: 15px; font-weight: 600; color: var(--brand-dark); padding: 18px 24px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; transition: background 0.2s; user-select: none; }
.faq-question:hover { background: var(--brand-primary-50); }
.faq-question .arrow { font-size: 18px; color: var(--brand-gray-400); transition: transform 0.3s; }
.faq-item.open .faq-question .arrow { transform: rotate(180deg); color: var(--brand-primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer-inner { padding: 0 24px 18px; font-size: 14px; color: var(--brand-secondary); line-height: 1.7; }

/* ── PRODUCT CARDS ── */
.product-card { background: var(--brand-white); border: 1px solid var(--brand-gray-200); border-radius: var(--radius-xl); padding: 32px; transition: all 0.25s; position: relative; overflow: hidden; }
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.product-card .accent-bar { position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent-cool)); }
.product-card h3 { font-family: var(--font-heading); font-size: 20px; font-weight: 700; color: var(--brand-dark); margin-bottom: 6px; }
.product-card .product-type { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--brand-primary); margin-bottom: 10px; }
.product-card p { font-size: 14px; color: var(--brand-secondary); line-height: 1.6; margin-bottom: 16px; }

/* ── SPECS TABLE ── */
.specs-table { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; background: var(--brand-gray-200); border-radius: var(--radius-xl); overflow: hidden; border: 1px solid var(--brand-gray-200); }
.spec-row { display: grid; grid-template-columns: 200px 1fr; background: var(--brand-white); }
.spec-row:nth-child(even) { background: var(--brand-gray-100); }
.spec-label { font-family: var(--font-heading); font-size: 13px; font-weight: 600; color: var(--brand-dark); padding: 14px 20px; border-right: 1px solid var(--brand-gray-200); }
.spec-value { font-size: 13px; color: var(--brand-secondary); padding: 14px 20px; }

/* ── HUBSPOT FORM OVERRIDES ── */
.hs-form { font-family: var(--font-body) !important; }
.hs-form .hs-input { border: 1.5px solid var(--brand-gray-300) !important; border-radius: var(--radius-md) !important; padding: 12px 16px !important; font-family: var(--font-body) !important; font-size: 14px !important; }
.hs-form .hs-input:focus { border-color: var(--brand-primary) !important; box-shadow: 0 0 0 3px rgba(26,143,196,0.1) !important; }
.hs-form .hs-button { background: var(--brand-primary) !important; border: none !important; border-radius: var(--radius-md) !important; font-family: var(--font-heading) !important; font-weight: 600 !important; font-size: 14px !important; padding: 14px 32px !important; cursor: pointer !important; transition: all 0.2s !important; }
.hs-form .hs-button:hover { background: var(--brand-primary-dark) !important; }
.hs-form label { font-family: var(--font-heading) !important; font-size: 13px !important; font-weight: 600 !important; color: var(--brand-dark) !important; }

/* ── LOGO BAR ── */
.logo-bar { padding: 32px 0; background: var(--brand-white); border-bottom: 1px solid var(--brand-gray-200); overflow: hidden; }
.logo-bar .section-label { text-align: center; margin-bottom: 16px; }
.logo-strip { display: flex; align-items: center; justify-content: center; gap: 36px; flex-wrap: wrap; }
.logo-strip img { height: 34px; opacity: 0.45; filter: grayscale(100%); transition: all 0.3s; object-fit: contain; }
.logo-strip img:hover { opacity: 1; filter: grayscale(0%); }

/* ── PRODUCT IMAGE CARDS ── */
.product-img-card { background: var(--brand-white); border: 1px solid var(--brand-gray-200); border-radius: var(--radius-xl); overflow: hidden; transition: all 0.25s; }
.product-img-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.product-img-card .img-wrap { width: 100%; height: 210px; background: var(--brand-gray-100); display: flex; align-items: center; justify-content: center; overflow: hidden; border-bottom: 1px solid var(--brand-gray-200); }
.product-img-card .img-wrap img { max-height: 175px; object-fit: contain; }
.product-img-card .card-body { padding: 22px; }
.product-img-card .product-type { font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--brand-primary); margin-bottom: 4px; }
.product-img-card h3 { font-family: var(--font-heading); font-size: 18px; font-weight: 700; color: var(--brand-dark); margin-bottom: 6px; }
.product-img-card p { font-size: 13px; color: var(--brand-secondary); line-height: 1.6; margin-bottom: 14px; }
.product-img-card .accent-bar { height: 3px; background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent-cool)); }

/* ── INDUSTRY IMAGE CARDS ── */
.industry-img-card { border-radius: var(--radius-xl); overflow: hidden; border: 1px solid var(--brand-gray-200); transition: all 0.25s; background: var(--brand-white); text-decoration: none; display: block; }
.industry-img-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.industry-img-card .ind-img { width: 100%; height: 190px; overflow: hidden; }
.industry-img-card .ind-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.industry-img-card:hover .ind-img img { transform: scale(1.05); }
.industry-img-card .ind-body { padding: 20px; }
.industry-img-card h3 { font-family: var(--font-heading); font-size: 16px; font-weight: 700; color: var(--brand-dark); margin-bottom: 4px; }
.industry-img-card p { font-size: 13px; color: var(--brand-secondary); line-height: 1.5; }

/* ── SENSOR GALLERY ── */
.sensor-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.sensor-gallery-item { background: var(--brand-white); border: 1px solid var(--brand-gray-200); border-radius: var(--radius-lg); padding: 20px; text-align: center; }
.sensor-gallery-item img { height: 90px; object-fit: contain; margin-bottom: 12px; }
.sensor-gallery-item h4 { font-family: var(--font-heading); font-size: 13px; font-weight: 700; margin-bottom: 3px; }
.sensor-gallery-item p { font-size: 11.5px; color: var(--brand-secondary); line-height: 1.4; }

/* ── VIDEO EMBED ── */
.video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; border-radius: var(--radius-xl); border: 1px solid var(--brand-gray-200); box-shadow: var(--shadow-md); }
.video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; }

/* ── HERO WITH IMAGE ── */
.hero-split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 4vw, 64px); align-items: center; }
.hero-product-img { max-width: 100%; width: clamp(280px, 30vw, 520px); display: block; margin: 0 auto; filter: drop-shadow(0 16px 40px rgba(0,0,0,0.1)); }

/* ── LOGO BAR ── */
.logo-bar { padding: 32px 0; background: var(--brand-white); border-bottom: 1px solid var(--brand-gray-200); overflow: hidden; width: 100%; }
.logo-bar .section-label { text-align: center; margin-bottom: 16px; }
.logo-strip { display: flex; align-items: center; justify-content: center; gap: clamp(20px, 3vw, 40px); flex-wrap: wrap; }
.logo-strip img { height: clamp(24px, 2.5vw, 38px); opacity: 0.45; filter: grayscale(100%); transition: all 0.3s; object-fit: contain; }
.logo-strip img:hover { opacity: 1; filter: grayscale(0%); }

/* ── RESPONSIVE ── */

/* Ultrawide monitors (1600px+) */
@media (min-width: 1600px) {
  .container { max-width: 1480px; }
  .page-hero h1 { font-size: 56px; }
  .section-title { font-size: 38px; }
  .card { padding: 32px; }
  .card h3 { font-size: 18px; }
  .card p { font-size: 14.5px; }
  .grid-4 { gap: 28px; }
  .grid-3 { gap: 28px; }
  .product-img-card .img-wrap { height: 240px; }
  .industry-img-card .ind-img { height: 220px; }
  .hero-product-img { width: 520px; }
  .trust-number { font-size: 30px; }
  .testimonial-card blockquote { font-size: 16px; }
  .footer-grid { gap: 56px; }
}

/* Very large monitors (1920px+) */
@media (min-width: 1920px) {
  .container { max-width: 1600px; }
  .nav { padding: 0 80px; }
  .page-hero { padding: 96px 0 80px; }
  .section { padding: 96px 0; }
}

/* Large tablets / small desktops */
@media (max-width: 1100px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}

/* Tablets */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: 1fr; }
  .hero-split { grid-template-columns: 1fr !important; text-align: center; }
  .hero-split .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-split .hero-actions { justify-content: center; }
  .sensor-gallery { grid-template-columns: repeat(2, 1fr); }
  .specs-table { grid-template-columns: 1fr; }
  .spec-row { grid-template-columns: 140px 1fr; }
}

/* Mobile phones */
@media (max-width: 768px) {
  .nav { padding: 0 16px; }
  .nav-menu { display: none; }
  .mobile-toggle { display: block; }
  .nav-menu.open { display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--brand-white); border-bottom: 1px solid var(--brand-gray-200); padding: 16px 20px; box-shadow: var(--shadow-lg); z-index: 999; }
  .nav-menu.open .nav-dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; padding-left: 16px; }
  .page-hero h1 { font-size: 28px; letter-spacing: -1px; }
  .page-hero .hero-desc { font-size: 15px; }
  .section-title { font-size: 22px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-card { padding: 36px 20px; border-radius: 14px; }
  .cta-card h2 { font-size: 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .hero-split { grid-template-columns: 1fr !important; gap: 24px; }
  .hero-product-img { width: 260px; }
  .sensor-gallery { grid-template-columns: 1fr 1fr; gap: 10px; }
  .trust-bar .container { gap: 20px; }
  .trust-number { font-size: 22px; }
  .trust-label { font-size: 10px; }
  .logo-strip { gap: 16px; }
  .logo-strip img { height: 22px; }
  .compare-table { font-size: 11px; }
  .compare-table th, .compare-table td { padding: 8px 10px; }
  .btn-lg { padding: 12px 24px; font-size: 14px; }
}

/* Small mobile phones */
@media (max-width: 480px) {
  .page-hero h1 { font-size: 24px; }
  .page-hero { padding: 40px 0 32px; }
  .section { padding: 40px 0; }
  .card { padding: 18px; }
  .hero-product-img { width: 220px; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  .hero-actions { flex-direction: column; width: 100%; }
}