/* =====================================================
   ADEX FOOTER COMPONENT STYLES
   File: components/footer.css
   
   HOW TO LINK:
     <link rel="stylesheet" href="components/footer.css">
   
   Adjust the path depending on your page depth:
     - Root pages (index.html)     → components/footer.css
     - Sub-pages (pages/page.html) → ../components/footer.css
===================================================== */

/* ---- Footer Wrapper ---- */
#footer {
  background: linear-gradient(180deg, rgba(10, 10, 26, 0.95), rgba(15, 15, 35, 0.98));
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(0, 212, 255, 0.15);
  padding: 80px 0 30px;
  position: relative;
  z-index: 2;
  overflow: hidden;
  color: #ffffff;
  font-family: 'Exo 2', 'Inter', sans-serif;
  box-shadow: 0 -10px 40px rgba(0, 212, 255, 0.1);
}

/* ---- Subtle grid background ---- */
.footer-grid-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(255, 107, 0, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 107, 0, 0.015) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* ---- 4-Column Main Grid ---- */
.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1.2fr 0.8fr;
  gap: 48px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  z-index: 2;
}

/* ---- Column 1: Brand ---- */
.footer-brand .logo {
  margin-bottom: 25px;
}

.footer-logo-img {
  height: 60px;
  width: auto;
  display: block;
  margin-bottom: 20px;
  padding: 5px 0;
}

.footer-brand p {
  font-size: 14px;
  color: #cccccc;
  line-height: 1.8;
  font-weight: 300;
}

/* ---- Column Headings (gradient underline) ---- */
.footer-links-col h4 {
  font-size: 15px;
  color: #ffffff;
  text-transform: uppercase;
  margin-bottom: 25px;
  padding-bottom: 10px;
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, #00d4ff, #ff00ff) 1;
  display: block;
  letter-spacing: 0.1em;
}

/* ---- Column 2: Products List ---- */
.footer-links-col ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.footer-links-col ul li {
  border-bottom: 1px solid #222222;
  padding: 10px 0;
}

.footer-links-col ul li:last-child {
  border-bottom: none;
}

.footer-links-col a {
  font-size: 14px;
  color: #bbbbbb;
  text-decoration: none;
  transition: color 0.3s ease, padding-left 0.3s ease;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-links-col a::before {
  content: '›';
  color: #00d4ff;
  font-size: 18px;
  font-weight: bold;
}

.footer-links-col a:hover {
  color: #00d4ff;
  padding-left: 5px;
}

/* ---- Column 3: Contact ---- */
.footer-links-col address {
  font-style: normal;
  font-size: 14px;
  color: #cccccc;
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-contact-details {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-contact-link {
  font-size: 14px;
  color: #cccccc;
}

.label-red {
  color: #E3242B;
  font-weight: 700;
  margin-right: 5px;
}

.report-link {
  color: #386FA3;
  text-decoration: none;
  font-weight: 500;
}

.report-link:hover {
  text-decoration: underline;
}

/* ---- Column 4: Certifications (vertical gradient bar) ---- */
.cert-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border-left: 2px solid transparent;
  border-image: linear-gradient(180deg, #00d4ff, #ff00ff) 1;
  padding-left: 20px;
}

.cert-img {
  height: 60px;
  width: auto;
  display: block;
  margin-bottom: 15px;
  padding: 5px 0;
  transition: transform 0.3s ease;
}

.cert-img:hover {
  transform: scale(1.05);
}

/* ---- Bottom Bar ---- */
.footer-bottom {
  padding: 30px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 2;
}

.footer-bottom p {
  font-size: 13px;
  color: #888888;
}

.footer-bottom strong {
  color: #bbbbbb;
}

.footer-bottom-links {
  display: flex;
  gap: 25px;
}

.footer-bottom-links a {
  font-size: 12px;
  color: #888888;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color 0.3s;
}

.footer-bottom-links a:hover {
  color: #00d4ff;
}

/* ---- Back to Top Button ---- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--gradient-primary);
  color: #000;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s, box-shadow 0.3s;
  text-decoration: none;
  font-size: 20px;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.back-to-top.visible {
  opacity: 1;
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.6), 0 8px 30px rgba(0, 212, 255, 0.4);
}

/* =====================================================
   RESPONSIVE — Tablet (max 1024px)
===================================================== */
@media (max-width: 1024px) {
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

/* =====================================================
   RESPONSIVE — Mobile (max 600px)
===================================================== */
@media (max-width: 600px) {
  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }

  .cert-col {
    border-left: none;
    border-top: 2px solid #386FA3;
    padding-left: 0;
    padding-top: 20px;
    align-items: center;
  }
}

/* =====================================================
   LIGHT MODE FOOTER OVERRIDES
===================================================== */
body.light-mode #footer {
  background: linear-gradient(180deg, #1a237e 0%, #111827 100%) !important;
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  box-shadow: none;
}

body.light-mode .footer-brand p,
body.light-mode .footer-links-col p,
body.light-mode .footer-links-col a {
  color: #a8b8d0;
}

body.light-mode .footer-links-col a:hover {
  color: #ffffff;
}

body.light-mode .footer-links-col h4 {
  color: #ffffff;
}

body.light-mode .footer-bottom {
  border-top-color: rgba(255, 255, 255, 0.08);
  color: #6b7fa0;
}

body.light-mode .footer-bottom a {
  color: #8899bb;
}

body.light-mode .footer-bottom a:hover {
  color: #ffffff;
}