/* ==========================================================================
   OPS Knowledge Store - Premium B2B Maritime Design System
   WCAG 2.2 AA Compliant | Seamless Corporate Ecosystem Integration
   ========================================================================== */

/* Trust & Assurance Banner */
.trust-banner {
  background: #0d1e36;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px clamp(20px, 4vw, 80px);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1320px;
  margin: 0 auto;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.trust-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: rgba(56, 189, 248, 0.12);
  color: #38bdf8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  flex-shrink: 0;
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.trust-text strong {
  display: block;
  font-size: 0.95rem;
  color: #f8fafc;
  line-height: 1.25;
}

.trust-text span {
  font-size: 0.8rem;
  color: #94a3b8;
  line-height: 1.35;
}

/* Category Filter Bar */
.catalog-head {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 40px;
}

.filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-btn {
  background: #112240;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #cbd5e1;
  padding: 9px 20px;
  font-size: 0.84rem;
  font-weight: 700;
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.filter-btn:hover {
  border-color: #38bdf8;
  color: #ffffff;
  background: #162a4d;
}

.filter-btn.active {
  background: #38bdf8;
  border-color: #38bdf8;
  color: #0a192f;
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.25);
}

/* Product Catalog Grid */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1320px;
  margin: 0 auto;
}

.product-item {
  background: #112240;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.product-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
  border-color: rgba(56, 189, 248, 0.35);
}

.product-item.featured {
  border-color: rgba(212, 175, 55, 0.45);
  background: #132747;
  position: relative;
}

.badge-featured {
  position: absolute;
  top: 16px;
  right: 16px;
  background: #d4af37;
  color: #0a192f;
  font-size: 0.68rem;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 4px;
}

.product-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-cat {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 800;
  color: #38bdf8;
  margin-bottom: 12px;
}

.product-item h3 {
  font-family: var(--font-serif, "Cormorant Garamond", Georgia, serif);
  font-size: 1.45rem;
  font-weight: 600;
  line-height: 1.25;
  margin: 0 0 12px;
  color: #f8fafc;
}

.product-desc {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin: 0 0 20px;
}

.product-specs {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  border-top: 1px dashed rgba(255, 255, 255, 0.1);
  border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
  padding: 14px 0;
}

.product-specs li {
  font-size: 0.84rem;
  color: #cbd5e1;
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.product-specs li::before {
  content: "✓";
  color: #38bdf8;
  font-weight: bold;
}

.product-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.price-box {
  display: flex;
  flex-direction: column;
}

.price-main {
  font-family: var(--font-sans, "Manrope", sans-serif);
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.15;
}

.price-sub {
  font-size: 0.78rem;
  color: #94a3b8;
  margin-top: 2px;
}

.btn-card {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: #38bdf8;
  color: #0a192f;
  font-size: 0.84rem;
  font-weight: 700;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-card:hover {
  background: #7dd3fc;
  color: #0a192f;
  box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
}

.btn-card.btn-gold {
  background: #d4af37;
  color: #0a192f;
}

.btn-card.btn-gold:hover {
  background: #e5c158;
}

.btn-card.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

.btn-card.btn-outline:hover {
  border-color: #38bdf8;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.08);
}

/* FAQ Accordion Section */
.faq-section {
  padding: clamp(60px, 8vw, 100px) clamp(20px, 5vw, 80px);
  background: #0d1e36;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
}

.faq-head {
  text-align: center;
  margin-bottom: 40px;
}

.faq-head h2 {
  font-family: var(--font-serif, "Cormorant Garamond", Georgia, serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 600;
  color: #f8fafc;
  margin: 0 0 12px;
}

.faq-head p {
  color: #cbd5e1;
  font-size: 0.95rem;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-card {
  background: #112240;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 8px;
  padding: 20px 24px;
  transition: border-color 0.2s ease;
}

.faq-card:hover {
  border-color: rgba(56, 189, 248, 0.3);
}

.faq-card summary {
  font-size: 1rem;
  font-weight: 700;
  color: #f8fafc;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-card summary::-webkit-details-marker {
  display: none;
}

.faq-card summary::after {
  content: "+";
  font-size: 1.3rem;
  color: #38bdf8;
  font-weight: 400;
  transition: transform 0.2s ease;
}

.faq-card[open] summary::after {
  content: "−";
}

.faq-card p {
  font-size: 0.9rem;
  color: #cbd5e1;
  line-height: 1.65;
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* Responsive */
@media (max-width: 1024px) {
  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .catalog-grid {
    grid-template-columns: 1fr;
  }
  .trust-grid {
    grid-template-columns: 1fr;
  }
  .product-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .btn-card {
    width: 100%;
    justify-content: center;
  }
}

/* ==========================================================================
   OPS Knowledge Store - Hero & Navigation System (B2B Maritime)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 25, 47, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(16px);
  width: 100%;
}

.site-header .nav {
  width: var(--wrap, min(1320px, calc(100% - 48px)));
  min-height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-header .nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-header .nav-links a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  transition: color 0.2s ease;
}

.site-header .nav-links a:hover {
  color: #38bdf8;
}

.site-header .badge-live {
  font-size: 0.65rem;
  background: rgba(56, 189, 248, 0.2);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.4);
  padding: 2px 7px;
  border-radius: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-left: 4px;
}

.store-hero,
.hero:not(.cinematic-hero) {
  min-height: calc(100vh - 82px);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  background: #0a192f;
  color: #f8fafc;
  position: relative;
  overflow: hidden;
}

.hero-content {
  padding: clamp(60px, 8vw, 120px) clamp(28px, 6vw, 90px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  order: 1;
  z-index: 2;
}

.hero-image {
  order: 2;
  background: linear-gradient(180deg, rgba(10, 25, 47, 0.2) 0%, rgba(10, 25, 47, 0.75) 100%),
              url("../images/store-hero-inspection-v1.jpg") center/cover no-repeat;
  min-height: 520px;
}

.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.75rem;
  font-weight: 800;
  color: #38bdf8;
  margin: 0 0 18px;
}

.hero h1 {
  font-family: var(--font-serif, "Cormorant Garamond", Georgia, serif);
  font-size: clamp(2.4rem, 4.4vw, 3.8rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #f8fafc;
  margin: 0 0 24px;
}

.hero h1 em {
  color: #38bdf8;
  font-style: normal;
}

.hero-copy {
  max-width: 640px;
  color: #cbd5e1;
  font-size: clamp(1rem, 1.25vw, 1.15rem);
  line-height: 1.65;
  margin: 0 0 32px;
}

.actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  border: 1px solid rgba(56, 189, 248, 0.4);
  border-radius: var(--radius-sm, 6px);
  color: #ffffff;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: all 0.2s ease;
}

.button:hover {
  background: linear-gradient(135deg, #0369a1 0%, #075985 100%);
  border-color: #38bdf8;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(2, 132, 199, 0.35);
}

.button-small {
  padding: 8px 16px;
  font-size: 0.84rem;
}

.button-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.25);
  color: #f8fafc;
}

.button-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #38bdf8;
  color: #38bdf8;
}

.text-link {
  font-size: 0.92rem;
  font-weight: 700;
  color: #38bdf8;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}

.text-link:hover {
  gap: 10px;
  color: #7dd3fc;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-top: 48px;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  font-weight: 700;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
}

.hero-facts span + span::before {
  content: "•";
  color: #d4af37;
  margin-right: 24px;
}

@media (max-width: 900px) {
  .site-header .nav-links {
    display: none;
  }
  .store-hero,
  .hero:not(.cinematic-hero) {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .hero-image {
    order: 1;
    min-height: 320px;
  }
  .hero-content {
    order: 2;
    padding: 44px 24px 60px;
  }
}

@media (max-width: 560px) {
  .hero-facts span + span::before {
    display: none;
  }
  .hero-facts {
    flex-direction: column;
    gap: 8px;
  }
}

/* Store editorial rhythm: isolated from legacy global page styles. */
.site-header .nav {
  min-height: 72px;
  gap: 16px;
}

.site-header .nav-links {
  gap: clamp(10px, 1.3vw, 20px);
}

.site-header .nav-links a,
.site-header .nav-actions a {
  font-size: 0.78rem !important;
  line-height: 1.2;
}

.site-header .button-small {
  min-height: 38px;
  padding: 8px 14px;
}

.intro {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(180px, .34fr) minmax(0, 1fr);
  gap: clamp(38px, 7vw, 110px);
  padding: clamp(72px, 8vw, 112px) max(24px, calc((100vw - 1180px) / 2));
  color: #102a36;
  background: #f2f0e9;
  border-top: 1px solid #d9d6cb;
  border-bottom: 1px solid #d9d6cb;
}

.intro .section-number,
.offers .section-number {
  margin: 5px 0 0;
  color: #856214;
  font-size: .72rem;
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: .14em;
}

.intro > div {
  max-width: 850px;
}

.intro h2 {
  max-width: 720px;
  margin: 0 0 24px;
  color: #102a36;
  font-family: var(--font-serif, Georgia, serif);
  font-size: clamp(2.1rem, 3.5vw, 3.35rem);
  line-height: 1.06;
  letter-spacing: -.025em;
}

.intro p:not(.section-number) {
  max-width: 850px;
  margin: 0 0 13px;
  color: #405864;
  font-size: clamp(.98rem, 1.15vw, 1.08rem);
  line-height: 1.75;
}

.offers,
.offers#catalog,
.offers#katalog {
  width: 100%;
  padding: clamp(72px, 8vw, 112px) max(24px, calc((100vw - 1320px) / 2));
  color: #102a36;
  background: #fbfaf6 !important;
  border-top: 0;
}

.offers .catalog-head {
  max-width: 760px;
  margin: 0 auto 34px;
}

.offers .catalog-head .section-number {
  margin-bottom: 12px;
}

.offers .catalog-head h2,
.offers#catalog .catalog-head h2,
.offers#katalog .catalog-head h2 {
  margin: 0 0 14px;
  color: #102a36;
  font-family: var(--font-serif, Georgia, serif);
  font-size: clamp(2rem, 3.5vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -.025em;
}

.offers .catalog-head > p:not(.section-number),
.offers#catalog .catalog-head > p:not(.section-number),
.offers#katalog .catalog-head > p:not(.section-number) {
  max-width: 680px;
  margin: 0 auto;
  color: #49616b !important;
  font-size: 1rem;
  line-height: 1.65;
}

.offers .filter-btn {
  background: #e9eef0;
  border-color: #c8d3d7;
  color: #18323e;
  box-shadow: none;
}

.offers .filter-btn:hover {
  background: #dce8eb;
  border-color: #1677a0;
  color: #0b2c3a;
}

.offers .filter-btn.active {
  background: #0d6f91;
  border-color: #0d6f91;
  color: #fff;
  box-shadow: 0 6px 18px rgba(13, 111, 145, .18);
}

@media (max-width: 1040px) {
  .site-header .nav-links { gap: 8px; }
  .site-header .nav-links a { padding-inline: 6px; font-size: .72rem !important; }
  .site-header .nav-actions { gap: 10px !important; }
}

@media (max-width: 900px) {
  .intro { grid-template-columns: 1fr; gap: 18px; }
}

@media (max-width: 760px) {
  .site-header .nav { min-height: 64px; }
  .site-header .store-logo-disc { width: 46px; height: 46px; min-width: 46px; }
  .intro,
  .offers,
  .offers#catalog,
  .offers#katalog { padding: 56px 20px; }
  .intro h2,
  .offers .catalog-head h2 { font-size: clamp(1.9rem, 9vw, 2.55rem); }
  .offers .filter-bar { justify-content: flex-start; flex-wrap: nowrap; overflow-x: auto; padding-bottom: 8px; }
  .offers .filter-btn { flex: 0 0 auto; }
}

/* ==========================================================================
   Proof / 4-Step Operational Framework (Modern B2B Premium Glass Grid)
   ========================================================================== */
.proof {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  padding: clamp(72px, 8vw, 108px) max(24px, calc((100vw - 1320px) / 2));
  background: radial-gradient(circle at 50% 0%, rgba(13, 111, 145, 0.12), transparent 70%), #04101a;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.proof article {
  position: relative;
  padding: 36px 28px;
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(12, 33, 49, 0.75), rgba(6, 20, 31, 0.85));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.32s ease, box-shadow 0.32s ease;
}

.proof article:hover {
  transform: translateY(-6px);
  border-color: rgba(229, 192, 110, 0.35);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5), 0 0 25px rgba(229, 192, 110, 0.12);
}

.proof article strong {
  display: inline-block;
  font-family: "Plus Jakarta Sans", var(--font-sans, "Manrope", sans-serif);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: #e5c06e;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(229, 192, 110, 0.12);
  border: 1px solid rgba(229, 192, 110, 0.28);
  margin-bottom: 20px;
}

.proof article h3 {
  margin: 0 0 12px;
  color: #ffffff;
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.proof article p {
  margin: 0;
  color: #a3bdcc;
  font-size: 0.94rem;
  line-height: 1.65;
}

@media (max-width: 1040px) {
  .proof {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .proof {
    grid-template-columns: 1fr;
    gap: 16px;
    padding-inline: 20px;
  }
}

/* Store Footer Enhancement */
.store-footer {
  padding: 60px 24px;
  background: #020b12;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  color: #7d96a6;
  font-size: 0.88rem;
}
.store-footer img {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: #ffffff;
  padding: 6px;
  margin: 0 auto 16px;
  display: block;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}