/* ============================================
   PENMARCH AIR — Global Stylesheet V2.0
   ESP Air Purification Technology
   ============================================ */

:root {
  --navy:    #0d1b2a;
  --charcoal:#1e2d3d;
  --blue:    #0ea5e9;
  --blue-dk: #0284c7;
  --white:   #ffffff;
  --ice:     #f0f9ff;
  --gray:    #f8fafc;
  --text:    #1e293b;
  --mid:     #64748b;
  --light:   #94a3b8;
  --border:  #e2e8f0;
  --green:   #10b981;
  --red:     #ef4444;
}

/* RESET */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; }
body { font-family:'Segoe UI', system-ui, -apple-system, Arial, sans-serif; color:var(--text); background:#fff; line-height:1.6; }
img { max-width:100%; display:block; }
a { text-decoration:none; color:inherit; }

/* ============ NAVIGATION ============ */
nav {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  background:rgba(255,255,255,0.97); backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
  padding:0 48px; height:68px;
  box-shadow:0 1px 16px rgba(0,0,0,0.06);
}
.nav-logo { color:var(--navy); font-size:19px; font-weight:800; letter-spacing:2.5px; }
.nav-logo span { color:var(--blue); }
.nav-links { display:flex; gap:28px; align-items:center; }
.nav-links a {
  color:var(--mid); font-size:12.5px; letter-spacing:1px;
  text-transform:uppercase; font-weight:600;
  padding:4px 0; border-bottom:2px solid transparent;
  transition:color .2s, border-color .2s;
}
.nav-links a:hover, .nav-links a.active { color:var(--blue); border-bottom-color:var(--blue); }
.nav-cta {
  background:var(--blue); color:#fff !important;
  padding:9px 20px; border-radius:5px;
  border-bottom:none !important; font-weight:700 !important;
  font-size:12px !important; letter-spacing:1px;
  transition:background .2s, transform .2s;
}
.nav-cta:hover { background:var(--blue-dk) !important; transform:translateY(-1px); }

/* ============ PAGE HERO ============ */
.page-hero {
  padding:140px 48px 80px;
  background:linear-gradient(135deg, rgba(13,27,42,.92) 0%, rgba(13,27,42,.78) 100%),
    var(--hero-bg, url('')) center/cover no-repeat;
}
.page-hero-light {
  padding:140px 48px 80px;
  background:linear-gradient(135deg, var(--ice) 0%, #dbeafe 100%);
}
.breadcrumb {
  font-size:11.5px; color:rgba(255,255,255,.45);
  margin-bottom:18px; letter-spacing:1px; text-transform:uppercase;
}
.breadcrumb a { color:rgba(255,255,255,.5); transition:color .2s; }
.breadcrumb a:hover { color:var(--blue); }
.breadcrumb-light { color:var(--mid); }
.breadcrumb-light a { color:var(--blue); }

.page-hero h1, .hero-h1 {
  font-size:clamp(32px,5vw,58px); font-weight:800;
  color:#fff; margin-bottom:18px; line-height:1.08; letter-spacing:-.5px;
}
.page-hero h1 span, .hero-h1 span { color:var(--blue); }
.page-hero-light h1 { color:var(--navy); }
.page-hero-light h1 span { color:var(--blue); }
.hero-label {
  display:inline-block; border:1px solid rgba(14,165,233,.5);
  color:var(--blue); padding:7px 20px; border-radius:30px;
  font-size:11.5px; letter-spacing:2px; text-transform:uppercase;
  font-weight:700; margin-bottom:24px;
}
.hero-label-light {
  display:inline-block; background:rgba(14,165,233,.1);
  color:var(--blue); padding:7px 20px; border-radius:30px;
  font-size:11.5px; letter-spacing:2px; text-transform:uppercase;
  font-weight:700; margin-bottom:24px;
}
.hero-sub { font-size:17px; color:rgba(255,255,255,.72); max-width:640px; line-height:1.75; margin-bottom:10px; }
.hero-sub-light { font-size:17px; color:var(--mid); max-width:640px; line-height:1.75; margin-bottom:10px; }
.hero-desc { font-size:15px; color:rgba(255,255,255,.5); max-width:580px; line-height:1.8; margin-bottom:40px; }
.hero-desc-light { font-size:15px; color:var(--light); max-width:580px; line-height:1.8; margin-bottom:40px; }

/* ============ BUTTONS ============ */
.btn { display:inline-block; padding:13px 30px; border-radius:6px; font-weight:700; font-size:13.5px; letter-spacing:.8px; text-transform:uppercase; transition:all .22s; cursor:pointer; border:none; }
.btn-blue { background:var(--blue); color:#fff; }
.btn-blue:hover { background:var(--blue-dk); transform:translateY(-2px); box-shadow:0 6px 20px rgba(14,165,233,.3); }
.btn-white { background:#fff; color:var(--blue); }
.btn-white:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(0,0,0,.15); }
.btn-outline { border:2px solid rgba(255,255,255,.55); color:#fff; }
.btn-outline:hover { border-color:#fff; background:rgba(255,255,255,.08); }
.btn-outline-blue { border:2px solid var(--blue); color:var(--blue); background:transparent; }
.btn-outline-blue:hover { background:var(--blue); color:#fff; }
.btn-navy { background:var(--navy); color:#fff; }
.btn-navy:hover { background:var(--charcoal); }
.btns { display:flex; gap:14px; flex-wrap:wrap; align-items:center; }

/* ============ SECTIONS ============ */
.section { padding:88px 48px; }
.section-sm { padding:56px 48px; }
.section-navy { background:var(--navy); }
.section-ice { background:var(--ice); }
.section-gray { background:var(--gray); }
.section-blue { background:linear-gradient(135deg, var(--blue) 0%, var(--blue-dk) 100%); }
.container { max-width:1160px; margin:0 auto; }
.container-sm { max-width:860px; margin:0 auto; }

.sec-label { font-size:11px; letter-spacing:3px; text-transform:uppercase; color:var(--blue); font-weight:700; margin-bottom:10px; }
.sec-label-white { color:rgba(255,255,255,.6); }
.sec-title { font-size:clamp(26px,3.5vw,42px); font-weight:800; color:var(--navy); margin-bottom:14px; line-height:1.15; letter-spacing:-.3px; }
.sec-title-white { color:#fff; }
.sec-sub { font-size:16px; color:var(--mid); line-height:1.8; max-width:660px; }
.sec-sub-white { color:rgba(255,255,255,.62); }
.sec-header { text-align:center; margin-bottom:60px; }
.sec-header .sec-sub { margin:0 auto; }
.sec-header-left { margin-bottom:52px; }

/* ============ CARDS — GENERAL ============ */
.card { background:#fff; border-radius:14px; border:1.5px solid var(--border); overflow:hidden; transition:all .28s; }
.card:hover { border-color:var(--blue); box-shadow:0 12px 40px rgba(14,165,233,.12); transform:translateY(-5px); }
.card-body { padding:28px; }

/* ============ HERO STATS ============ */
.hero-stats { display:flex; gap:48px; flex-wrap:wrap; justify-content:center; padding-top:48px; margin-top:56px; border-top:1px solid rgba(255,255,255,.1); }
.stat-num { font-size:36px; font-weight:800; color:var(--blue); line-height:1; }
.stat-label { font-size:11px; color:rgba(255,255,255,.45); letter-spacing:1px; text-transform:uppercase; margin-top:6px; }

/* ============ SOLUTION CARDS ============ */
.sol-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.sol-card { border-radius:14px; overflow:hidden; box-shadow:0 4px 24px rgba(0,0,0,.08); transition:all .3s; display:block; text-decoration:none; }
.sol-card:hover { transform:translateY(-8px); box-shadow:0 20px 48px rgba(0,0,0,.16); }
.sol-img { height:240px; background-size:cover; background-position:center; position:relative; }
.sol-img-overlay { position:absolute; inset:0; background:linear-gradient(to top, rgba(13,27,42,.92) 0%, rgba(13,27,42,.35) 60%, transparent 100%); }
.sol-img-content { position:absolute; bottom:0; left:0; right:0; padding:26px; }
.sol-img-content h3 { color:#fff; font-size:19px; font-weight:800; margin-bottom:5px; letter-spacing:-.2px; }
.sol-img-content p { color:rgba(255,255,255,.65); font-size:13px; }
.sol-body { padding:22px 26px 26px; background:#fff; }
.sol-tags { display:flex; flex-wrap:wrap; gap:7px; margin-bottom:14px; }
.tag { background:var(--ice); color:var(--blue); padding:4px 12px; border-radius:20px; font-size:11px; font-weight:700; letter-spacing:.3px; }
.sol-link { color:var(--blue); font-size:12.5px; font-weight:700; letter-spacing:.8px; text-transform:uppercase; display:flex; align-items:center; gap:6px; }
.sol-link::after { content:'→'; transition:transform .2s; }
.sol-card:hover .sol-link::after { transform:translateX(4px); }

/* ============ APPLICATION CARDS ============ */
.app-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }
.app-card { border-radius:11px; overflow:hidden; position:relative; min-height:210px; display:flex; flex-direction:column; justify-content:flex-end; transition:all .3s; text-decoration:none; }
.app-card:hover { transform:translateY(-6px); box-shadow:0 16px 40px rgba(0,0,0,.18); }
.app-card-bg { position:absolute; inset:0; background-size:cover; background-position:center; transition:transform .4s; }
.app-card:hover .app-card-bg { transform:scale(1.06); }
.app-overlay { position:absolute; inset:0; background:linear-gradient(to top, rgba(13,27,42,.93) 0%, rgba(13,27,42,.38) 60%, transparent 100%); }
.app-content { position:relative; z-index:1; padding:18px; }
.app-content h4 { color:#fff; font-size:14px; font-weight:800; margin-bottom:4px; }
.app-content p { color:rgba(255,255,255,.62); font-size:11.5px; line-height:1.5; }
.app-badge { display:inline-block; background:var(--blue); padding:3px 10px; border-radius:10px; font-size:10px; color:#fff; margin-top:8px; font-weight:700; letter-spacing:.5px; }
.app-badge-green { background:var(--green); }
.app-badge-navy { background:var(--navy); }

/* ============ TECH FLOW ============ */
.tech-flow { display:flex; align-items:center; justify-content:center; flex-wrap:wrap; gap:0; }
.tech-step { text-align:center; padding:0 20px; }
.tech-step-icon { width:68px; height:68px; background:rgba(14,165,233,.12); border:2px solid rgba(14,165,233,.3); border-radius:50%; display:flex; align-items:center; justify-content:center; margin:0 auto 14px; font-size:24px; }
.tech-step h4 { color:#fff; font-size:13px; font-weight:700; margin-bottom:4px; }
.tech-step p { color:rgba(255,255,255,.45); font-size:11.5px; line-height:1.5; max-width:100px; margin:0 auto; }
.tech-arrow { color:var(--blue); font-size:22px; padding:0 2px; align-self:center; }

/* ============ WHY ESP FEATURES ============ */
.feat-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.feat-card { background:#fff; border-radius:13px; padding:30px; border:1.5px solid var(--border); transition:all .28s; }
.feat-card:hover { border-color:var(--blue); box-shadow:0 8px 32px rgba(14,165,233,.1); transform:translateY(-4px); }
.feat-icon { width:50px; height:50px; background:var(--ice); border-radius:11px; display:flex; align-items:center; justify-content:center; font-size:22px; margin-bottom:18px; }
.feat-card h3 { font-size:16px; font-weight:800; color:var(--navy); margin-bottom:9px; }
.feat-card p { font-size:13.5px; color:var(--mid); line-height:1.72; }

/* ============ PRODUCT CARDS ============ */
.prod-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.prod-card { background:#fff; border-radius:14px; border:1.5px solid var(--border); overflow:hidden; transition:all .28s; }
.prod-card:hover { border-color:var(--blue); box-shadow:0 12px 40px rgba(14,165,233,.12); transform:translateY(-5px); }
.prod-img { height:190px; background:var(--ice); display:flex; align-items:center; justify-content:center; font-size:52px; border-bottom:1px solid var(--border); }
.prod-body { padding:24px; }
.prod-cat { font-size:10px; letter-spacing:2px; text-transform:uppercase; color:var(--blue); font-weight:700; margin-bottom:7px; }
.prod-body h3 { font-size:16.5px; font-weight:800; color:var(--navy); margin-bottom:9px; line-height:1.3; }
.prod-body p { font-size:13px; color:var(--mid); line-height:1.72; margin-bottom:14px; }
.prod-specs { display:flex; flex-wrap:wrap; gap:7px; margin-bottom:16px; }
.spec-tag { background:var(--ice); padding:4px 11px; border-radius:20px; font-size:11px; color:var(--text); font-weight:600; }
.prod-footer { display:flex; gap:9px; }
.btn-sm { padding:9px 17px; border-radius:5px; font-size:12px; font-weight:700; letter-spacing:.5px; text-transform:uppercase; display:inline-block; transition:all .2s; }
.btn-sm-blue { background:var(--blue); color:#fff; }
.btn-sm-blue:hover { background:var(--blue-dk); }
.btn-sm-outline { border:1.5px solid var(--border); color:var(--mid); background:#fff; }
.btn-sm-outline:hover { border-color:var(--blue); color:var(--blue); }

/* ============ ESP BLOCK (detail pages) ============ */
.esp-block { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; margin-bottom:88px; padding-bottom:88px; border-bottom:1px solid var(--border); }
.esp-block:last-child { border-bottom:none; margin-bottom:0; padding-bottom:0; }
.esp-block.reverse { direction:rtl; }
.esp-block.reverse > * { direction:ltr; }
.esp-img { border-radius:14px; overflow:hidden; box-shadow:0 8px 40px rgba(0,0,0,.11); }
.esp-img img { width:100%; height:380px; object-fit:cover; }
.esp-content .sec-label { margin-bottom:10px; }
.esp-content h2 { font-size:clamp(22px,3vw,34px); font-weight:800; color:var(--navy); margin-bottom:12px; line-height:1.18; }
.esp-content p { font-size:15.5px; color:var(--mid); line-height:1.82; margin-bottom:18px; }
.check-list { list-style:none; margin:0 0 28px; }
.check-list li { padding:9px 0; border-bottom:1px solid var(--border); font-size:14.5px; color:var(--text); display:flex; align-items:center; gap:11px; }
.check-list li::before { content:'✓'; color:var(--blue); font-weight:800; font-size:13px; flex-shrink:0; }

/* ============ TABLE ============ */
.table-wrap { overflow-x:auto; margin-top:36px; border-radius:10px; border:1px solid var(--border); }
table { width:100%; border-collapse:collapse; }
th { background:var(--navy); color:#fff; padding:13px 18px; text-align:left; font-size:12.5px; letter-spacing:.5px; font-weight:700; }
td { padding:13px 18px; border-bottom:1px solid var(--border); font-size:13.5px; color:var(--text); }
tr:last-child td { border-bottom:none; }
tr:nth-child(even) { background:var(--ice); }
td.td-blue { color:var(--blue); font-weight:700; }
td.td-check { color:var(--green); font-weight:700; font-size:15px; }
td.td-cross { color:var(--red); }

/* ============ OEM STEPS ============ */
.oem-steps { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.oem-step { text-align:center; padding:22px 18px; background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.07); border-radius:12px; }
.oem-step-num { width:38px; height:38px; background:var(--blue); border-radius:50%; display:flex; align-items:center; justify-content:center; margin:0 auto 12px; color:#fff; font-weight:800; font-size:14px; }
.oem-step h4 { color:#fff; font-size:13px; font-weight:700; margin-bottom:4px; }
.oem-step p { color:rgba(255,255,255,.42); font-size:11.5px; line-height:1.5; }

/* ============ CTA STRIP ============ */
.cta-strip { padding:72px 48px; text-align:center; }
.cta-strip h2 { font-size:clamp(24px,3vw,38px); font-weight:800; color:#fff; margin-bottom:14px; }
.cta-strip p { font-size:16px; color:rgba(255,255,255,.75); max-width:520px; margin:0 auto 40px; line-height:1.8; }

/* ============ FOOTER ============ */
footer { background:var(--navy); padding:64px 48px 32px; }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; margin-bottom:48px; }
.footer-brand p { color:rgba(255,255,255,.45); font-size:13.5px; line-height:1.8; max-width:260px; margin-top:14px; }
.footer-col h5 { color:#fff; font-size:11px; letter-spacing:2px; text-transform:uppercase; font-weight:700; margin-bottom:18px; }
.footer-col a { display:block; color:rgba(255,255,255,.45); font-size:13.5px; margin-bottom:10px; transition:color .2s; }
.footer-col a:hover { color:var(--blue); }
.footer-bottom { border-top:1px solid rgba(255,255,255,.07); padding-top:24px; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; }
.footer-bottom p { color:rgba(255,255,255,.3); font-size:12.5px; }

/* ============ SCHEMA / STRUCTURED MARKUP ============ */
/* (JSON-LD injected per page) */

/* ============ WHATSAPP ============ */
.wa-float { position:fixed; bottom:28px; right:28px; z-index:999; width:54px; height:54px; background:#25d366; border-radius:50%; display:flex; align-items:center; justify-content:center; box-shadow:0 4px 18px rgba(37,211,102,.45); transition:transform .2s; text-decoration:none; }
.wa-float:hover { transform:scale(1.1); }
.wa-float svg { width:28px; height:28px; fill:#fff; }

/* ============ RESPONSIVE ============ */
@media(max-width:1024px) {
  .sol-grid { grid-template-columns:1fr 1fr; }
  .app-grid { grid-template-columns:repeat(2,1fr); }
  .feat-grid { grid-template-columns:1fr 1fr; }
  .prod-grid { grid-template-columns:1fr 1fr; }
  .footer-grid { grid-template-columns:1fr 1fr; }
}
@media(max-width:768px) {
  nav { padding:0 20px; }
  .nav-links { display:none; }
  .section, .section-sm { padding:52px 20px; }
  .page-hero, .page-hero-light { padding:110px 20px 56px; }
  .sol-grid { grid-template-columns:1fr; }
  .app-grid { grid-template-columns:repeat(2,1fr); }
  .feat-grid { grid-template-columns:1fr; }
  .prod-grid { grid-template-columns:1fr; }
  .esp-block, .esp-block.reverse { grid-template-columns:1fr; direction:ltr; }
  .oem-steps { grid-template-columns:1fr 1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .footer-bottom { flex-direction:column; text-align:center; }
  .hero-stats { gap:28px; }
  .tech-flow { flex-direction:column; }
  .tech-arrow { transform:rotate(90deg); }
  .cta-strip { padding:52px 20px; }
  footer { padding:48px 20px 24px; }
}