/* ═══════════════════════════════════════════════════════════════════════════
   RETAIL DISPLAY HARDWARE — styles.css
   Premium B2B SPA for retaildisplayhardware.com
═══════════════════════════════════════════════════════════════════════════ */

/* RESET & BASE */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --clr-primary:   #1a1a2e;
  --clr-accent:    #e8500a;
  --clr-accent2:   #c94000;
  --clr-steel:     #2d3748;
  --clr-light:     #f7f8fa;
  --clr-white:     #ffffff;
  --clr-text:      #1a202c;
  --clr-muted:     #4a5568;
  --clr-border:    #e2e8f0;
  --font-main:     'Inter', system-ui, -apple-system, sans-serif;
  --radius:        8px;
  --radius-lg:     14px;
  --shadow-sm:     0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:     0 4px 16px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.07);
  --shadow-lg:     0 10px 40px rgba(0,0,0,.14), 0 4px 12px rgba(0,0,0,.08);
  --transition:    0.22s ease;
  --max-w:         1200px;
}

html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-main); color: var(--clr-text); background: var(--clr-white); line-height: 1.65; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* CONTAINER */
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius); font-family: var(--font-main); font-size: .9375rem; font-weight: 600; cursor: pointer; transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition); border: 2px solid transparent; white-space: nowrap; }
.btn--primary { background: var(--clr-accent); color: var(--clr-white); border-color: var(--clr-accent); }
.btn--primary:hover { background: var(--clr-accent2); border-color: var(--clr-accent2); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(232,80,10,.35); }
.btn--ghost { background: transparent; color: var(--clr-white); border-color: rgba(255,255,255,.6); }
.btn--ghost:hover { background: rgba(255,255,255,.12); border-color: var(--clr-white); }
.btn--nav { background: var(--clr-accent); color: var(--clr-white); padding: 9px 20px; font-size: .875rem; }
.btn--nav:hover { background: var(--clr-accent2); }
.btn--lg { padding: 15px 36px; font-size: 1.0625rem; }
.btn--full { width: 100%; }

/* LOGO */
.logo { display: inline-flex; align-items: baseline; gap: 5px; font-weight: 800; font-size: 1.125rem; letter-spacing: -.02em; }
.logo__rdh { color: var(--clr-primary); }
.logo__hw { color: var(--clr-accent); }

/* HEADER */
.header { position: sticky; top: 0; z-index: 100; background: var(--clr-white); border-bottom: 1px solid var(--clr-border); box-shadow: var(--shadow-sm); }
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a { font-size: .9rem; font-weight: 500; color: var(--clr-muted); transition: color var(--transition); }
.nav a:hover { color: var(--clr-accent); }
.nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--clr-primary); padding: 4px 8px; }

/* HERO */
.hero { position: relative; min-height: 88vh; display: flex; align-items: center; background: linear-gradient(135deg, rgba(26,26,46,.92) 0%, rgba(45,55,72,.85) 100%), url('https://images.unsplash.com/photo-1556742049-0cfed4f6a45d?w=1600&q=80') center/cover no-repeat; color: var(--clr-white); overflow: hidden; }
.hero::after { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 70% 50%, rgba(232,80,10,.18) 0%, transparent 60%); pointer-events: none; }
.hero__overlay { display: none; }
.hero__content { position: relative; z-index: 2; max-width: 760px; padding: 80px 24px; }
.hero__eyebrow { font-size: .8125rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--clr-accent); margin-bottom: 20px; opacity: .9; }
.hero__headline { font-size: clamp(2.25rem, 5vw, 3.75rem); font-weight: 800; line-height: 1.1; letter-spacing: -.03em; margin-bottom: 24px; }
.hero__sub { font-size: 1.125rem; font-weight: 300; line-height: 1.7; color: rgba(255,255,255,.82); max-width: 580px; margin-bottom: 36px; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; }
.hero__trust { display: flex; flex-wrap: wrap; gap: 20px; font-size: .8125rem; font-weight: 500; color: rgba(255,255,255,.7); letter-spacing: .02em; }
.hero__trust span { display: flex; align-items: center; gap: 6px; }

/* SECTIONS */
.section { padding: 96px 0; }
.section--light { background: var(--clr-light); }
.section--white { background: var(--clr-white); }
.section--dark { background: var(--clr-primary); color: var(--clr-white); }
.section--accent { background: var(--clr-steel); color: var(--clr-white); }
.section--cta { background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-steel) 100%); color: var(--clr-white); }

.section__header { text-align: center; max-width: 680px; margin: 0 auto 64px; }
.section__header--light h2, .section__header--light p { color: var(--clr-white); }
.section__header h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 800; letter-spacing: -.025em; margin-bottom: 16px; line-height: 1.2; }
.section__header p { font-size: 1.0625rem; color: var(--clr-muted); line-height: 1.7; }
.section--dark .section__header p,
.section--accent .section__header p { color: rgba(255,255,255,.7); }
.section__tag { display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--clr-accent); background: rgba(232,80,10,.1); padding: 4px 12px; border-radius: 20px; margin-bottom: 14px; }
.section__tag--light { color: var(--clr-accent); background: rgba(232,80,10,.18); }

/* GRID */
.grid { display: grid; gap: 24px; }
.grid--4 { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

/* CARDS */
.card { background: var(--clr-white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); transition: transform var(--transition), box-shadow var(--transition); display: flex; flex-direction: column; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card--dark { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); }
.card--dark:hover { background: rgba(255,255,255,.1); }
.card--accent { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); }
.card--accent:hover { background: rgba(255,255,255,.12); }

.card__img-wrap { width: 100%; aspect-ratio: 1 / 1; overflow: hidden; background: #f0f0f0; }
.card--dark .card__img-wrap, .card--accent .card__img-wrap { background: rgba(255,255,255,.08); }
.card__img-wrap img { width: 100%; height: 100%; object-fit: contain; padding: 12px; transition: transform 0.4s ease; }
.card:hover .card__img-wrap img { transform: scale(1.05); }

.card__body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.card__body h3 { font-size: 1rem; font-weight: 700; line-height: 1.3; color: var(--clr-text); }
.card--dark .card__body h3, .card--accent .card__body h3 { color: var(--clr-white); }
.card__body p { font-size: .875rem; color: var(--clr-muted); line-height: 1.6; flex: 1; }
.card--dark .card__body p, .card--accent .card__body p { color: rgba(255,255,255,.7); }

.card__cta { display: inline-flex; align-items: center; font-size: .8125rem; font-weight: 700; color: var(--clr-accent); letter-spacing: .03em; text-transform: uppercase; margin-top: 4px; transition: color var(--transition); gap: 4px; }
.card__cta::after { content: ' \2192'; }
.card__cta:hover { color: var(--clr-accent2); }
.card__cta--light { color: var(--clr-accent); }
.card__cta--light:hover { color: #ff7040; }

/* BADGE */
.badge { display: inline-block; font-size: .6875rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 3px 10px; border-radius: 20px; }
.badge--hot { background: rgba(229,62,62,.18); color: #fc8181; border: 1px solid rgba(229,62,62,.3); }

/* ADVANTAGE GRID */
.advantage-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 32px; }
.adv-card { background: var(--clr-light); border-radius: var(--radius-lg); padding: 36px 32px; border: 1px solid var(--clr-border); transition: box-shadow var(--transition), transform var(--transition); }
.adv-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.adv-card__icon { font-size: 2rem; margin-bottom: 18px; color: var(--clr-accent); display: block; }
.adv-card h3 { font-size: 1.1875rem; font-weight: 700; margin-bottom: 12px; color: var(--clr-primary); }
.adv-card p { font-size: .9375rem; color: var(--clr-muted); line-height: 1.7; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--clr-white); border: 1px solid var(--clr-border); border-radius: var(--radius); overflow: hidden; transition: box-shadow var(--transition); }
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-item summary { padding: 20px 24px; font-weight: 600; font-size: .9375rem; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; color: var(--clr-primary); transition: background var(--transition); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.25rem; font-weight: 300; color: var(--clr-accent); flex-shrink: 0; margin-left: 16px; }
.faq-item[open] summary::after { content: '\2212'; }
.faq-item summary:hover { background: var(--clr-light); }
.faq-item p { padding: 16px 24px 20px; font-size: .9375rem; color: var(--clr-muted); line-height: 1.7; border-top: 1px solid var(--clr-border); }

/* QUOTE SECTION */
.quote-wrap { display: grid; grid-template-columns: 1fr 1.4fr; gap: 72px; align-items: start; }
.quote-copy h2 { font-size: clamp(1.75rem, 3vw, 2.375rem); font-weight: 800; letter-spacing: -.025em; margin-bottom: 18px; line-height: 1.2; color: var(--clr-white); }
.quote-copy p { font-size: 1.0625rem; color: rgba(255,255,255,.75); line-height: 1.7; margin-bottom: 28px; }
.quote-benefits { display: flex; flex-direction: column; gap: 10px; }
.quote-benefits li { font-size: .9375rem; color: rgba(255,255,255,.8); display: flex; align-items: center; gap: 10px; }

/* FORM */
.quote-form { background: var(--clr-white); border-radius: var(--radius-lg); padding: 40px 36px; box-shadow: var(--shadow-lg); display: flex; flex-direction: column; gap: 20px; }
.form-row { display: flex; gap: 16px; }
.form-row--2 > .form-group { flex: 1; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: .8125rem; font-weight: 600; color: var(--clr-text); letter-spacing: .02em; }
.form-group label span { color: var(--clr-accent); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 11px 14px; border: 1.5px solid var(--clr-border); border-radius: var(--radius); font-family: var(--font-main); font-size: .9375rem; color: var(--clr-text); background: var(--clr-white); transition: border-color var(--transition), box-shadow var(--transition); outline: none; appearance: none; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--clr-accent); box-shadow: 0 0 0 3px rgba(232,80,10,.12); }
.form-group textarea { resize: vertical; min-height: 110px; }
.form-group select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234a5568' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; cursor: pointer; }
.form-note { font-size: .8rem; color: var(--clr-muted); text-align: center; margin-top: -4px; }

/* FOOTER */
.footer { background: var(--clr-primary); color: rgba(255,255,255,.75); }
.footer__inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding: 64px 24px 48px; }
.footer__brand .logo { margin-bottom: 16px; }
.footer__brand .logo .logo__rdh { color: var(--clr-white); }
.footer__brand p { font-size: .9rem; line-height: 1.7; color: rgba(255,255,255,.55); max-width: 340px; }
.footer__links h4 { font-size: .8125rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--clr-white); margin-bottom: 16px; }
.footer__links ul { display: flex; flex-direction: column; gap: 10px; }
.footer__links a { font-size: .9rem; color: rgba(255,255,255,.55); transition: color var(--transition); }
.footer__links a:hover { color: var(--clr-accent); }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 24px; }
.footer__bottom p { font-size: .8125rem; color: rgba(255,255,255,.4); text-align: center; }
.footer__bottom a { color: rgba(255,255,255,.55); }
.footer__bottom a:hover { color: var(--clr-accent); }
.footer__attribution { font-size: .75rem !important; color: rgba(255,255,255,.28) !important; margin-top: 6px; }
.footer__attribution a { color: rgba(255,255,255,.38) !important; }
.footer__attribution a:hover { color: var(--clr-accent) !important; }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .quote-wrap { grid-template-columns: 1fr; gap: 40px; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .nav { display: none; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: var(--clr-white); border-bottom: 1px solid var(--clr-border); padding: 20px 24px; gap: 16px; box-shadow: var(--shadow-md); z-index: 99; }
  .nav.nav--open { display: flex; }
  .nav-toggle { display: block; }
  .header__inner { position: relative; }
  .hero { min-height: 75vh; }
  .hero__content { padding: 60px 24px; }
  .hero__ctas { flex-direction: column; align-items: flex-start; }
  .grid--4 { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
  .form-row--2 { flex-direction: column; }
  .quote-form { padding: 28px 22px; }
  .footer__inner { grid-template-columns: 1fr; gap: 32px; padding: 40px 24px 32px; }
  .footer__brand { grid-column: auto; }
  .advantage-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .grid--4 { grid-template-columns: 1fr 1fr; }
  .hero__headline { font-size: 2rem; }
  .section__header h2 { font-size: 1.625rem; }
  .btn--lg { padding: 13px 24px; font-size: 1rem; }
}