/* ==========================================================================
   Module: Footer — Mitsubishi Đồng Nai
   BEM: .footer__*
   Phụ thuộc: variables.css, base.css, button.css
   ========================================================================== */

.footer {
  position: relative;
  background: var(--color-black);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  overflow: hidden;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer__content-wrapper {
  position: relative;
  z-index: 10;
}

/* 🏔️ DARK CINEMATIC LAYERS */
.footer__luxury-texture { position: absolute; inset: 0; z-index: 1; pointer-events: none; }

.footer__layer-carbon {
    position: absolute; inset: 0;
    background-image: linear-gradient(45deg, var(--color-black) 25%, transparent 25%), 
                      linear-gradient(-45deg, var(--color-black) 25%, transparent 25%), 
                      linear-gradient(45deg, transparent 75%, var(--color-black) 75%), 
                      linear-gradient(-45deg, transparent 75%, var(--color-black) 75%);
    background-size: 4px 4px; z-index: 1;
    opacity: 0.6;
}

.footer__layer-honeycomb {
    position: absolute; inset: 0; z-index: 2;
    mix-blend-mode: plus-lighter; opacity: 0.3;
    animation: ftSyncPulse 12s ease-in-out infinite;
}

@keyframes ftSyncPulse {
    0%, 10%, 90%, 100% { opacity: 0.1; filter: brightness(0.5); }
    30%, 70% { opacity: 0.6; filter: brightness(1.8); }
}

.footer__layer-energy-pulses { position: absolute; inset: 0; z-index: 3; opacity: 0.4; }
.footer__pulse-path {
    fill: none; stroke-width: 0.8px;
    stroke-dasharray: 300, 1500; stroke-dashoffset: 1800;
    animation: ftDashSync 10s linear infinite;
    stroke-linecap: round;
}
@keyframes ftDashSync { from { stroke-dashoffset: 1800; } to { stroke-dashoffset: -1800; } }

.footer__layer-glass-gloss {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, transparent 45%, rgba(255,255,255,0.02) 50%, transparent 55%);
    background-size: 250% 250%; animation: ftGlassShine 15s linear infinite;
    backdrop-filter: blur(1px); z-index: 4;
}
@keyframes ftGlassShine { 0% { background-position: 0% 0%; } 100% { background-position: 200% 200%; } }

/* ===== TOP ===== */
.footer__top {
  padding-block: var(--space-16) var(--space-12);
  border-bottom: 1px solid var(--color-dark-3);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--space-10);
}

/* ===== BRAND COL ===== */
.footer__logo {
  display: inline-block;
  margin-bottom: var(--space-4);
}

.footer__official-badge {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  color: var(--color-gold);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-5);
  line-height: 1.4;
}

.footer__official-badge svg {
  flex-shrink: 0;
  margin-top: 1px;
  color: var(--color-gold);
}

.footer__address {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.footer__address p {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-secondary);
}

.footer__address svg {
  flex-shrink: 0;
  color: var(--color-primary);
}

/* ===== SOCIAL ===== */
.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-dark-2);
  border: 1px solid var(--color-dark-3);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  position: relative; /* Cho tooltip */
}

.footer__social-link:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-3px);
}

/* Tooltip CSS */
.footer__social-link[title]::after {
  content: attr(title);
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  padding: 5px 10px;
  background: rgba(0,0,0,0.9);
  color: #fff;
  font-size: 10px;
  white-space: nowrap;
  border-radius: 4px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  pointer-events: none;
  border: 1px solid rgba(255,255,255,0.1);
  z-index: 100;
}

.footer__social-link:hover[title]::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ===== NAV COLS ===== */
.footer__heading {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-5);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-primary);
}

/* ===== CTA ===== */
.footer__cta {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-dark-3);
}

.footer__cta p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

/* ===== BOTTOM ===== */
.footer__bottom {
  position: relative;
  z-index: 10;
  padding-block: var(--space-5);
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  flex-wrap: wrap;
  gap: 20px;
  /* Cách 2 bên 15% trên Desktop */
  padding-inline: 15%;
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* SEO Credit Box */
.footer__seo-credit { position: relative; padding: 2px; border-radius: 8px; overflow: hidden; background: rgba(255,255,255,0.05); min-width: 200px; margin-top: 10px; }
.footer__chasing-border { position: absolute; width: 200%; height: 200%; background: conic-gradient(from 0deg, transparent 10%, var(--color-primary) 15%, transparent 20%, transparent 60%, rgba(255,255,255,0.8) 65%, transparent 70%); animation: seoRotate 4s linear infinite; top: -50%; left: -50%; }
.footer__seo-inner { position: relative; z-index: 2; background: var(--color-dark-1); padding: 8px 15px; border-radius: 6px; font-size: 11px; font-weight: var(--font-bold); text-align: center; color: #fff; }
.footer__seo-random-color { text-decoration: none !important; font-weight: var(--font-bold); }

@keyframes seoRotate { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ===== RESPONSIVE ===== */
@media (max-width: 1023px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
  .footer__col--brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .footer__top {
    padding-block: 2rem 1.5rem !important;
  }
  
  .footer__grid {
    grid-template-columns: repeat(2, 1fr) !important; /* Chia 2 cột cho các link */
    gap: 1.5rem !important;
  }

  .footer__col--brand {
    grid-column: 1 / -1 !important; /* Logo và địa chỉ vẫn chiếm full dòng */
    margin-bottom: 0.5rem !important;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .footer__brand-id {
    margin-bottom: 1rem !important;
    width: 100%;
  }

  /* Canh giữa các hàng thông tin liên hệ */
  .footer__site-location, 
  .footer__address p, 
  .footer__official-badge {
    justify-content: center !important;
    text-align: center !important;
    font-size: 0.8rem !important;
  }

  .footer__address {
    margin-bottom: 1.25rem !important;
    gap: 8px !important;
  }

  .footer__heading {
    font-size: 0.8rem !important;
    margin-bottom: 0.75rem !important;
    text-decoration-thickness: 1px !important;
    text-underline-offset: 6px !important;
  }

  .footer__links {
    gap: 8px !important;
  }

  .footer__link {
    font-size: 0.75rem !important;
  }

  .footer__social {
    justify-content: center !important;
    margin-top: 0.5rem !important;
  }

  .footer__cta {
    display: none !important; /* Ẩn CTA cồng kềnh trong footer trên mobile để tiết kiệm diện tích */
  }

  .footer__bottom {
    padding-block: 1rem !important;
  }

  .footer__bottom-inner {
    padding-inline: var(--space-4) !important; /* Reset lại padding cho mobile */
    flex-direction: column !important;
    gap: 12px !important;
    text-align: center !important;
  }
  
  .footer__seo-inner {
    font-size: 12.5px !important;
    font-weight: 500 !important;
    text-transform: none !important;
    padding: 6px 12px !important;
    letter-spacing: 1.5px !important;
  }
  
  .footer__seo-inner a {
    font-size: 0.85rem !important;
  }
  
  .footer__copyright {
    font-size: 0.7rem !important;
  }

  .footer__seo-credit {
    min-width: 160px !important;
    transform: scale(0.9);
  }
}

/* Mobile Interaction Bar removed - Fixed widgets are now standalone components */