/* =====================================================
   XAYDUNG.CSS – Đội Cốp Pha Bác Dưu
   Color Palette: Amber/Earth/Concrete
   Mobile-First, font >= 16px
   ===================================================== */

/* ── Google Font loaded in HTML ── */

/* ── CSS Custom Properties ── */
:root {
  --xd-amber:    #D97706;
  --xd-amber-dk: #B45309;
  --xd-amber-lt: #FEF3C7;
  --xd-brown:    #78350F;
  --xd-dark:     #1C1917;
  --xd-gray:     #57534E;
  --xd-light:    #FAFAF9;
  --xd-concrete: #D6D3D1;
  --xd-green:    #16A34A;
  --xd-red:      #DC2626;
  --font-body:   'Be Vietnam Pro', sans-serif;
}

/* ── Global Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  background-color: var(--xd-light);
  color: var(--xd-dark);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a   { text-decoration: none; }

/* ── HEADER / NAV ── */
.xd-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(28, 25, 23, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(217, 119, 6, 0.3);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.xd-header.scrolled {
  background: rgba(28, 25, 23, 0.98);
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}

.xd-nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.xd-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}
.xd-logo-icon {
  width: 44px; height: 44px;
  background: var(--xd-amber);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.xd-logo-text h1 {
  font-size: 1rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.xd-logo-text span {
  font-size: 0.4rem;
  font-weight: 600;
  color: var(--xd-amber);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.xd-nav-links {
  display: none;
}
@media (min-width: 768px) {
  .xd-nav-links {
    display: flex;
    gap: 1.75rem;
    list-style: none;
  }
  .xd-nav-links a {
    color: #D6D3D1;
    font-size: 0.875rem;
    font-weight: 600;
    transition: color 0.2s;
  }
  .xd-nav-links a:hover { color: var(--xd-amber); }
}

.xd-nav-actions {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.btn-hotline {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--xd-red);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.55rem 1rem;
  border-radius: 9999px;
  transition: transform 0.2s, background 0.2s;
  animation: pulse-red 2s infinite;
}
.btn-hotline:hover { background: #b91c1c; transform: scale(1.03); }

.btn-baogianggay {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--xd-amber);
  color: #fff;
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.55rem 1.1rem;
  border-radius: 9999px;
  transition: transform 0.2s, background 0.2s;
}
.btn-baogianggay:hover { background: var(--xd-amber-dk); transform: translateY(-1px); }

.xd-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: #D6D3D1;
  cursor: pointer;
  padding: 0.25rem;
  font-size: 1.75rem;
}
@media (min-width: 768px) { .xd-menu-btn { display: none; } }

/* Mobile menu */
.xd-mobile-menu {
  display: none;
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: rgba(28, 25, 23, 0.98);
  border-top: 1px solid rgba(217, 119, 6, 0.2);
  padding: 1rem 1.25rem;
}
.xd-mobile-menu.open { display: block; }
.xd-mobile-menu a {
  display: block;
  color: #D6D3D1;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  transition: color 0.2s;
}
.xd-mobile-menu a:last-child { border-bottom: none; }
.xd-mobile-menu a:hover { color: var(--xd-amber); }

/* ── HERO SECTION ── */
.xd-hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: #1C1917;
}

.xd-hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('hero-bg.png');
  background-size: cover;
  background-position: center top;
  filter: brightness(0.45);
  transform: scale(1.04);
  transition: transform 8s ease;
}
.xd-hero:hover .xd-hero-bg { transform: scale(1.0); }

.xd-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(28,25,23,0.95) 0%,
    rgba(28,25,23,0.4) 50%,
    rgba(28,25,23,0.1) 100%
  );
}

.xd-hero-content {
  position: relative;
  z-index: 10;
  max-width: 1200px;
  margin: 0 auto;
  padding: 7rem 1.25rem 4rem;
  width: 100%;
}

.xd-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(217,119,6,0.2);
  border: 1px solid rgba(217,119,6,0.5);
  color: #FCD34D;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.4rem 0.9rem;
  border-radius: 9999px;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  backdrop-filter: blur(6px);
}

.xd-hero-content h2 {
  font-size: clamp(2rem, 5.5vw, 3.75rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.12;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}
.xd-hero-content h2 .accent { color: var(--xd-amber); }

.xd-hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: #D6D3D1;
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: 2.25rem;
}

.xd-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--xd-amber);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  padding: 0.9rem 1.75rem;
  border-radius: 9999px;
  box-shadow: 0 10px 30px rgba(217,119,6,0.4);
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
  background: var(--xd-amber-dk);
  transform: translateY(-2px);
  box-shadow: 0 14px 35px rgba(217,119,6,0.5);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.1);
  border: 2px solid rgba(255,255,255,0.3);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.9rem 1.75rem;
  border-radius: 9999px;
  backdrop-filter: blur(8px);
  transition: background 0.2s, border-color 0.2s;
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.5);
}

.xd-hero-scroll {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: rgba(255,255,255,0.4);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  animation: bounce 2s infinite;
}

/* ── STATS (Con Số Biết Nói) ── */
.xd-stats {
  background: var(--xd-dark);
  padding: 4rem 1.25rem;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  overflow: hidden;
  width: 100%;
  box-sizing: border-box;
}

.xd-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5px;
  background: rgba(217,119,6,0.2);
  border: 1.5px solid rgba(217,119,6,0.2);
  border-radius: 20px;
  overflow: hidden;
}
@media (min-width: 768px) {
  .xd-stats-grid { grid-template-columns: repeat(4, 1fr); }
}

.xd-stat-card {
  background: var(--xd-dark);
  padding: 2.5rem 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.xd-stat-icon {
  font-size: 2.25rem;
  margin-bottom: 0.25rem;
}
.xd-stat-num {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--xd-amber);
  line-height: 1;
  letter-spacing: -0.03em;
}
.xd-stat-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: #A8A29E;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.xd-stat-sub {
  font-size: 0.8rem;
  color: #57534E;
}

/* ── ĐẶC SẢN THỢ NÚI ── */
.xd-worker-story {
  padding: 5rem 1.25rem;
  background: var(--xd-light);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--xd-amber);
  margin-bottom: 0.75rem;
}
.section-title {
  font-size: clamp(1.7rem, 4vw, 2.75rem);
  font-weight: 900;
  color: var(--xd-dark);
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.section-desc {
  font-size: 1rem;
  color: var(--xd-gray);
  max-width: 560px;
  margin: 1rem auto 0;
  line-height: 1.75;
}

.xd-worker-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
@media (min-width: 860px) {
  .xd-worker-layout { grid-template-columns: 1fr 1fr; gap: 4rem; }
}

.xd-worker-img {
  position: relative;
}
.xd-worker-img img {
  width: 100%;
  border-radius: 20px;
  object-fit: cover;
  aspect-ratio: 4/3;
  box-shadow: 0 20px 60px rgba(0,0,0,0.18);
}
.xd-worker-badge {
  position: absolute;
  bottom: -1rem; right: -0.5rem;
  background: var(--xd-amber);
  color: #fff;
  font-weight: 800;
  font-size: 0.8rem;
  padding: 0.6rem 1rem;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(217,119,6,0.4);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.xd-worker-text .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.xd-tag {
  background: var(--xd-amber-lt);
  color: var(--xd-amber-dk);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  border: 1px solid #FCD34D;
}

.xd-worker-text h3 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--xd-dark);
  line-height: 1.3;
  margin-bottom: 1.25rem;
}
.xd-worker-text p {
  font-size: 1rem;
  color: var(--xd-gray);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.xd-rules {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.25rem 1.5rem;
  background: var(--xd-dark);
  border-radius: 14px;
  border-left: 4px solid var(--xd-amber);
}
.xd-rule {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #D6D3D1;
  font-size: 0.95rem;
  font-weight: 600;
}
.xd-rule-icon { color: var(--xd-green); flex-shrink: 0; }

/* ── CAM KẾT 4K ── */
.xd-commitment {
  padding: 5rem 1.25rem;
  background: #fff;
  position: relative;
  overflow: hidden;
}
.xd-commitment::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(217,119,6,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.xd-4k-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
@media (min-width: 768px) {
  .xd-4k-grid { grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
}

.xd-k-card {
  position: relative;
  border-radius: 18px;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}
.xd-k-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.12);
}

.xd-k-card.k1 { background: linear-gradient(135deg, #FEF3C7 0%, #FDE68A 100%); }
.xd-k-card.k2 { background: linear-gradient(135deg, #DCFCE7 0%, #A7F3D0 100%); }
.xd-k-card.k3 { background: linear-gradient(135deg, #E0F2FE 0%, #BAE6FD 100%); }
.xd-k-card.k4 { background: linear-gradient(135deg, #FEE2E2 0%, #FECACA 100%); }

.xd-k-letter {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  opacity: 0.15;
  position: absolute;
  top: 0.5rem; right: 1rem;
}
.xd-k-card.k1 .xd-k-letter { color: #D97706; }
.xd-k-card.k2 .xd-k-letter { color: #16A34A; }
.xd-k-card.k3 .xd-k-letter { color: #0284C7; }
.xd-k-card.k4 .xd-k-letter { color: #DC2626; }

.xd-k-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.k1 .xd-k-icon { background: #D97706; color: #fff; }
.k2 .xd-k-icon { background: #16A34A; color: #fff; }
.k3 .xd-k-icon { background: #0284C7; color: #fff; }
.k4 .xd-k-icon { background: #DC2626; color: #fff; }

.xd-k-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--xd-dark);
  line-height: 1.3;
}
.xd-k-desc {
  font-size: 0.875rem;
  color: var(--xd-gray);
  line-height: 1.65;
}

/* ── GALLERY ── */
.xd-gallery {
  padding: 5rem 1.25rem;
  background: var(--xd-dark);
}

.xd-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}
@media (min-width: 640px) { .xd-gallery-grid { grid-template-columns: repeat(3, 1fr); gap: 1rem; } }
@media (min-width: 1024px) { .xd-gallery-grid { grid-template-columns: repeat(4, 1fr); } }

.xd-gallery-item {
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  position: relative;
  aspect-ratio: 1 / 1;
  background: #2C2823;
}
.xd-gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.xd-gallery-item:hover img { transform: scale(1.07); }
.xd-gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(28,25,23,0);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.75rem;
  opacity: 0;
  transition: all 0.3s ease;
}
.xd-gallery-item:hover .xd-gallery-overlay {
  opacity: 1;
  background: rgba(28,25,23,0.55);
}

/* Lightbox */
.xd-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.xd-lightbox.active {
  opacity: 1;
  pointer-events: all;
}
.xd-lightbox img {
  max-width: min(90vw, 900px);
  max-height: 85vh;
  border-radius: 12px;
  object-fit: contain;
  box-shadow: 0 0 60px rgba(0,0,0,0.5);
}
.xd-lightbox-close {
  position: absolute;
  top: 1.25rem; right: 1.25rem;
  background: rgba(255,255,255,0.1);
  border: 2px solid rgba(255,255,255,0.2);
  color: #fff;
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 1.25rem;
  transition: background 0.2s;
}
.xd-lightbox-close:hover { background: rgba(255,255,255,0.25); }

/* ── TÂM THƯ (Quote) ── */
.xd-quote {
  padding: 5.5rem 1.25rem;
  background: linear-gradient(135deg, #1C1917 0%, #292524 100%);
  position: relative;
  overflow: hidden;
}
.xd-quote::before {
  content: '"';
  position: absolute;
  top: -1rem; left: 1rem;
  font-size: 12rem;
  font-family: Georgia, serif;
  color: var(--xd-amber);
  opacity: 0.06;
  line-height: 1;
  pointer-events: none;
}

.xd-quote-box {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.xd-quote-mark {
  font-size: 4rem;
  line-height: 1;
  color: var(--xd-amber);
  margin-bottom: -0.5rem;
  font-family: Georgia, serif;
}
.xd-quote-text {
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.55;
  letter-spacing: -0.01em;
  margin-bottom: 2rem;
}
.xd-quote-text em {
  color: var(--xd-amber);
  font-style: normal;
}
.xd-quote-sub {
  font-size: 1rem;
  color: #A8A29E;
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
}
.xd-quote-sig {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(217,119,6,0.15);
  border: 1px solid rgba(217,119,6,0.3);
  padding: 0.75rem 1.5rem;
  border-radius: 9999px;
}
.xd-quote-sig-name {
  color: #FCD34D;
  font-weight: 800;
  font-size: 0.95rem;
}
.xd-quote-sig-role {
  color: #A8A29E;
  font-size: 0.8rem;
}

/* ── FOOTER & FORM ── */
.xd-footer-form {
  padding: 5rem 1.25rem;
  background: var(--xd-light);
  overflow-x: hidden;
}

.xd-form-wrapper {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  background: #fff;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,0.1);
  box-sizing: border-box;
}
@media (min-width: 860px) {
  .xd-form-wrapper { grid-template-columns: 2fr 3fr; }
}

.xd-form-sidebar {
  background: linear-gradient(160deg, #D97706 0%, #B45309 100%);
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  position: relative;
  overflow: hidden;
}
.xd-form-sidebar::before {
  content: '🏗';
  position: absolute;
  bottom: -1rem; right: -1rem;
  font-size: 8rem;
  opacity: 0.08;
  pointer-events: none;
}

.xd-form-sidebar h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
}

.xd-info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.xd-info-icon {
  width: 42px; height: 42px;
  background: rgba(255,255,255,0.2);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  backdrop-filter: blur(6px);
}
.xd-info-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.7);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.2rem;
}
.xd-info-value {
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.4;
}

.xd-form-main {
  padding: 2rem 1.25rem;
  overflow: hidden;
  box-sizing: border-box;
}
@media (min-width: 500px) {
  .xd-form-main { padding: 2.5rem 2rem; }
}
.xd-form-main h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--xd-dark);
  margin-bottom: 0.4rem;
}
.xd-form-main p {
  color: var(--xd-gray);
  font-size: 0.95rem;
  margin-bottom: 1.75rem;
  line-height: 1.6;
}

.xd-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 500px) { .form-row { grid-template-columns: 1fr 1fr; } }

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--xd-dark);
}
.form-group label span { color: var(--xd-red); }

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 16px; /* min 16px to avoid iOS zoom */
  padding: 0.875rem 1rem;
  border: 2px solid #E7E5E4;
  border-radius: 12px;
  background: #FAFAF9;
  color: var(--xd-dark);
  outline: none;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--xd-amber);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(217,119,6,0.15);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select { appearance: none; cursor: pointer; }

.btn-submit {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: var(--xd-amber);
  color: #fff;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 800;
  padding: 1.1rem;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(217,119,6,0.35);
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  letter-spacing: 0.03em;
}
.btn-submit:hover {
  background: var(--xd-amber-dk);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(217,119,6,0.45);
}
.btn-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* ── REAL FOOTER ── */
.xd-real-footer {
  background: var(--xd-dark);
  padding: 2rem 1.25rem;
  text-align: center;
  border-top: 1px solid rgba(217,119,6,0.2);
}
.xd-real-footer p {
  color: #57534E;
  font-size: 0.8rem;
}
.xd-real-footer a {
  color: var(--xd-amber);
  font-weight: 600;
}

/* ── FLOATING BUTTONS ── */
.xd-floating {
  position: fixed;
  bottom: 1.5rem;
  right: 1rem;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
@media (min-width: 768px) {
  .xd-floating {
    right: 1.5rem;
    gap: 1rem;
  }
}

.xd-fab {
  width: 50px; height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 24px rgba(0,0,0,0.25);
  transition: transform 0.2s;
  position: relative;
  text-decoration: none;
}
.xd-fab:hover { transform: scale(1.1); }
@media (min-width: 768px) {
  .xd-fab { width: 58px; height: 58px; }
}

.xd-fab-zalo { background: #0068FF; }
.xd-fab-call { background: var(--xd-green); }

.xd-fab svg { width: 26px; height: 26px; fill: #fff; }

.xd-fab-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--xd-dark);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  transform: translateY(-50%) translateX(6px);
}
.xd-fab:hover .xd-fab-tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.pulse-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  animation: pulse-fab 2.5s infinite;
}
.xd-fab-zalo .pulse-ring { background: #0068FF; }
.xd-fab-call .pulse-ring { background: var(--xd-green); animation-delay: 1.2s; }

/* ── ANIMATIONS ── */
@keyframes pulse-red {
  0%, 100% { box-shadow: 0 0 0 0 rgba(220,38,38,0.5); }
  50%       { box-shadow: 0 0 0 8px rgba(220,38,38,0); }
}

@keyframes pulse-fab {
  0%   { transform: scale(0.85); opacity: 0.6; }
  70%  { transform: scale(1.45); opacity: 0; }
  100% { transform: scale(0.85); opacity: 0; }
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up {
  opacity: 0;
  animation: fadeUp 0.7s ease forwards;
}
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.25s; }
.delay-3 { animation-delay: 0.4s; }
.delay-4 { animation-delay: 0.55s; }

/* ── UTILITY ── */
.text-amber { color: var(--xd-amber); }
.text-center { text-align: center; }