/* ===================================================================
   TRẦN HỮU LUÂN - COMPONENTS & INTERACTIVE UI
   Gồm: Loading 3D, Floating Zalo/Call, Modal Auth, Bảng Giá, FAQ
   =================================================================== */

/* ==================== 1. PRELOADER 3D (CHẾ ĐỘ LOADING 3D) ==================== */
#preloader-3d {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #FFFFFF;
  z-index: 99999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.8s;
}

#preloader-3d.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-canvas-container {
  width: 240px;
  height: 240px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

#canvas3d-loader {
  width: 100%;
  height: 100%;
  display: block;
}

.loader-center-logo {
  position: absolute;
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: #FFFFFF;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.loader-center-logo img {
  width: 36px;
  height: 36px;
}

.loader-brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #0F172A;
  margin-top: 24px;
  letter-spacing: -0.3px;
}

.loader-brand-subtitle {
  font-size: 0.85rem;
  font-weight: 600;
  color: #2563EB;
  margin-top: 4px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.loader-progress-wrap {
  width: 260px;
  height: 6px;
  background: #E2E8F0;
  border-radius: 999px;
  margin-top: 24px;
  overflow: hidden;
  position: relative;
}

.loader-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #2563EB, #06B6D4);
  border-radius: 999px;
  transition: width 0.15s ease-out;
}

.loader-status-text {
  font-size: 0.8rem;
  font-weight: 600;
  color: #64748B;
  margin-top: 10px;
}

/* ==================== 2. FLOATING ACTION WIDGETS (ZALO & PHONE) ==================== */
.floating-contact-group {
  position: fixed;
  bottom: 28px;
  left: 28px;
  z-index: 9990;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Zalo Floating Button */
.btn-floating-zalo {
  position: relative;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #0068FF;
  box-shadow: 0 8px 24px rgba(0, 104, 255, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s;
  text-decoration: none;
}

.btn-floating-zalo:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 28px rgba(0, 104, 255, 0.55);
}

.btn-floating-zalo img {
  width: 32px;
  height: 32px;
}

/* Radar ping effect */
.btn-floating-zalo::before, .btn-floating-zalo::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid #0068FF;
  animation: radarPing 2.2s cubic-bezier(0, 0, 0.2, 1) infinite;
  opacity: 0.8;
  pointer-events: none;
}

.btn-floating-zalo::after {
  animation-delay: 1.1s;
}

/* Phone Floating Button */
.btn-floating-phone {
  position: relative;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
}

.btn-floating-phone:hover {
  transform: scale(1.1);
}

.btn-floating-phone img {
  width: 28px;
  height: 28px;
}

/* Tooltip hiển thị số Zalo */
.floating-tooltip {
  position: absolute;
  left: 70px;
  background: #FFFFFF;
  color: #0F172A;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.12);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.floating-tooltip strong {
  color: #0068FF;
}

.btn-floating-zalo:hover .floating-tooltip,
.btn-floating-phone:hover .floating-tooltip {
  opacity: 1;
  transform: translateX(0);
}

/* Back To Top Button */
.btn-back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 9990;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  color: #0F172A;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  transition: all 0.3s ease;
  font-size: 18px;
}

.btn-back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.btn-back-to-top:hover {
  background: #2563EB;
  color: #FFFFFF;
  border-color: #2563EB;
}

/* ==================== 3. BẢNG GIÁ MINH BẠCH (PRICING TABLES) ==================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 40px;
}

.pricing-card {
  background: #FFFFFF;
  border: 1.5px solid #E2E8F0;
  border-radius: 20px;
  padding: 40px 32px;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.04);
  position: relative;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.12);
  border-color: #BFDBFE;
}

.pricing-card.popular {
  border: 2px solid #2563EB;
  box-shadow: 0 15px 35px rgba(37, 99, 235, 0.15);
  transform: scale(1.03);
}

.pricing-popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #2563EB, #06B6D4);
  color: #FFFFFF;
  padding: 5px 16px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.pricing-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 8px;
}

.pricing-tagline {
  font-size: 0.9rem;
  color: #64748B;
  margin-bottom: 24px;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 900;
  color: #0F172A;
  margin-bottom: 8px;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 600;
  color: #64748B;
}

.pricing-features-list {
  list-style: none;
  margin: 28px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-top: 1px solid #E2E8F0;
  padding-top: 24px;
}

.pricing-features-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.925rem;
  color: #334155;
  font-weight: 500;
}

.pricing-features-list li .check {
  color: #10B981;
  font-weight: 800;
  font-size: 16px;
}

.pricing-card .btn-primary, .pricing-card .btn-secondary {
  width: 100%;
  margin-top: auto;
}

/* ==================== 4. FAQ ACCORDION ==================== */
.faq-wrap {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.25s ease;
}

.faq-item:hover {
  border-color: #BFDBFE;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: #0F172A;
  cursor: pointer;
}

.faq-question .icon {
  font-size: 20px;
  color: #2563EB;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-question .icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), padding 0.35s ease;
  padding: 0 24px;
  font-size: 0.95rem;
  color: #475569;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 22px 24px;
}

/* ==================== 5. SEO BREADCRUMBS ==================== */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #64748B;
  margin-bottom: 20px;
}

.breadcrumbs a {
  color: #2563EB;
  text-decoration: none;
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

.breadcrumbs .sep {
  color: #CBD5E1;
}

/* ==================== 6. MODAL & FORMS (ĐĂNG NHẬP / ĐĂNG KÝ / LIÊN HỆ) ==================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(8px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: #FFFFFF;
  border-radius: 20px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.2);
  width: 100%;
  max-width: 480px;
  padding: 40px;
  position: relative;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-box {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: #F1F5F9;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #64748B;
  transition: all 0.2s ease;
}

.modal-close:hover {
  background: #E2E8F0;
  color: #0F172A;
}

/* Tabs trong Modal Auth */
.auth-tabs {
  display: flex;
  border-bottom: 2px solid #F1F5F9;
  margin-bottom: 28px;
}

.auth-tab {
  flex: 1;
  padding: 12px;
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
  color: #64748B;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
}

.auth-tab.active {
  color: #2563EB;
}

.auth-tab.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: #2563EB;
}

/* Form Controls */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 8px;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 16px;
  background: #F8FAFC;
  border: 1.5px solid #E2E8F0;
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.95rem;
  color: #0F172A;
  transition: all 0.25s ease;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: #2563EB;
  background: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-textarea {
  resize: vertical;
  min-height: 110px;
}

/* Alert Boxes */
.alert {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 18px;
  display: none;
}

.alert.show {
  display: block;
}

.alert-success {
  background: #ECFDF5;
  color: #065F46;
  border: 1px solid #A7F3D0;
}

.alert-error {
  background: #FEF2F2;
  color: #991B1B;
  border: 1px solid #FECACA;
}

/* Keyframes */
@keyframes radarPing {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.6); opacity: 0; }
}

@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .pricing-card.popular {
    transform: none;
  }
}


/* ===================================================================
   DPS STYLE EXPANSION - MARQUEE, STACKING CARDS, TABS, MASCOT & REVIEWS
   =================================================================== */

/* Gradient typography */
.gradient-website {
  background: linear-gradient(90deg, #FF5A2A 0%, #EF7D0A 98%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  font-weight: 800;
}

.gradient-blue {
  background: linear-gradient(90deg, #2563EB 0%, #06B6D4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  font-weight: 800;
}

/* Hero Section Enhancement */
.hero-dps {
  position: relative;
  background: linear-gradient(180deg, #FFF7ED 0%, rgba(255, 247, 237, 0.5) 40%, #FFFFFF 100%);
  padding: 130px 0 80px;
  overflow: hidden;
}

.hero-dps::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at 70% 30%, rgba(255, 90, 42, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #FFFFFF;
  padding: 8px 18px;
  border-radius: 9999px;
  border: 1px solid #0F172A;
  border-left-width: 5px;
  border-right-width: 5px;
  font-size: 0.875rem;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 24px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
}

.hero-badge-pill .pulse-dot {
  width: 10px;
  height: 10px;
  background: #FF5A2A;
  border-radius: 50%;
  animation: pulseDot 1.8s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(255, 90, 42, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(255, 90, 42, 0); }
  100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(255, 90, 42, 0); }
}

.hero-dps-title {
  font-size: 3.4rem;
  line-height: 1.15;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.hero-dps-desc {
  font-size: 1.15rem;
  line-height: 1.65;
  color: #475569;
  max-width: 620px;
  margin-bottom: 32px;
}

.hero-dps-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.btn-gradient-orange {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 32px;
  border-radius: 12px;
  background: linear-gradient(90deg, #FF5A2A 0%, #EF7D0A 98%);
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(255, 90, 42, 0.3);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.btn-gradient-orange:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(255, 90, 42, 0.4);
  color: #FFFFFF;
}

.btn-outline-dark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 12px;
  background: #FFFFFF;
  color: #0F172A !important;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: 1.5px solid #CBD5E1;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn-outline-dark:hover {
  border-color: #0F172A;
  background: #F8FAFC;
  transform: translateY(-2px);
}

/* Floating cursor tags in Hero */
.hero-visual-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-main-img {
  width: 100%;
  max-width: 580px;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
  transition: transform 0.5s ease;
}

.hero-main-img:hover {
  transform: scale(1.02);
}

.floating-pointer-tag {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
  z-index: 5;
  animation: floatTag 4s ease-in-out infinite;
  pointer-events: auto;
}

.tag-orange {
  top: 10%;
  left: -20px;
  background: linear-gradient(90deg, #FF5A2A 0%, #EF7D0A 98%);
  color: #FFFFFF;
}

.tag-white {
  bottom: 12%;
  right: -20px;
  background: #FFFFFF;
  color: #0F172A;
  border: 1px solid #E2E8F0;
  animation-delay: 2s;
}

.tag-blue {
  top: 45%;
  right: -30px;
  background: #2563EB;
  color: #FFFFFF;
  animation-delay: 1s;
}

@keyframes floatTag {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

/* ==================== CONTINUOUS MARQUEE TICKER ==================== */
.marquee-strip {
  background: linear-gradient(90deg, #FF5A2A 0%, #EF7D0A 98%);
  padding: 16px 0;
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.06);
}

.marquee-track {
  display: inline-flex;
  align-items: center;
  gap: 24px;
  animation: scrollMarquee 35s linear infinite;
  will-change: transform;
}

.marquee-track:hover {
  animation-play-state: paused;
}

.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.15rem;
  font-weight: 800;
  color: #FFFFFF;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 6px 18px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.marquee-item .star {
  color: #FFE600;
  font-size: 1rem;
}

@keyframes scrollMarquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ==================== METRIC COUNTERS ==================== */
.counters-section {
  padding: 60px 0;
  background: #FFFFFF;
  position: relative;
}

.counters-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.counter-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 18px;
  padding: 30px 24px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.counter-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #FF5A2A 0%, #EF7D0A 98%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.counter-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 36px rgba(255, 90, 42, 0.1);
  border-color: #FED7AA;
}

.counter-card:hover::before {
  opacity: 1;
}

.counter-number {
  font-size: 2.8rem;
  font-weight: 800;
  background: linear-gradient(90deg, #FF5A2A 0%, #EF7D0A 98%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 8px;
  font-feature-settings: "tnum";
}

.counter-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: #475569;
}

/* ==================== STICKY STACKING SERVICES SECTION ==================== */
.services-stack-section {
  padding: 100px 0;
  background: #FFFDF9;
  position: relative;
}

.services-stack-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 50px;
  align-items: flex-start;
}

.services-stack-sidebar {
  position: sticky;
  top: 110px;
  background: #FFFFFF;
  padding: 36px 30px;
  border-radius: 20px;
  border: 1px solid #F1F5F9;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.04);
}

.services-stack-sidebar .badge {
  display: inline-block;
  padding: 6px 14px;
  background: #FFF7ED;
  color: #FF5A2A;
  border: 1px solid #FED7AA;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.services-stack-sidebar h2 {
  font-size: 2.2rem;
  line-height: 1.25;
  color: #0F172A;
  font-weight: 800;
  margin-bottom: 16px;
}

.services-stack-sidebar p {
  font-size: 0.95rem;
  color: #64748B;
  line-height: 1.6;
  margin-bottom: 24px;
}

.services-stack-cards {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.stack-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 24px;
  padding: 40px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}

.stack-card:hover {
  transform: translateY(-4px);
  border-color: #CBD5E1;
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
}

.stack-card-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.tag-badge-orange {
  background: #FFF7ED;
  color: #FF5A2A;
  border: 1px solid #FED7AA;
}

.tag-badge-blue {
  background: #EFF6FF;
  color: #2563EB;
  border: 1px solid #BFDBFE;
}

.tag-badge-purple {
  background: #F5F3FF;
  color: #7C3AED;
  border: 1px solid #DDD6FE;
}

.stack-card-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 14px;
  line-height: 1.3;
}

.stack-card-desc {
  font-size: 0.95rem;
  color: #475569;
  line-height: 1.6;
  margin-bottom: 20px;
}

.stack-card-features {
  list-style: none;
  padding: 0;
  margin-bottom: 24px;
}

.stack-card-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: #334155;
  margin-bottom: 10px;
  font-weight: 500;
}

.stack-card-features li svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  fill: #FF5A2A;
}

.stack-card-img-wrap {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
  background: #F8FAFC;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stack-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.stack-card:hover .stack-card-img-wrap img {
  transform: scale(1.04);
}

/* ==================== 4-STEP PROCESS ==================== */
.process-section {
  padding: 90px 0;
  background: #FFFFFF;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 50px;
  position: relative;
}

.process-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 20px;
  padding: 32px 24px;
  position: relative;
  transition: all 0.3s ease;
}

.process-card:hover {
  transform: translateY(-6px);
  border-color: #FED7AA;
  box-shadow: 0 16px 36px rgba(255, 90, 42, 0.09);
}

.process-step-num {
  font-size: 0.8rem;
  font-weight: 800;
  color: #FF5A2A;
  background: #FFF7ED;
  padding: 4px 14px;
  border-radius: 9999px;
  display: inline-block;
  margin-bottom: 16px;
  border: 1px solid #FED7AA;
}

.process-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 12px;
}

.process-desc {
  font-size: 0.9rem;
  color: #64748B;
  line-height: 1.6;
}

/* ==================== INDUSTRY SHOWCASE TABS ==================== */
.industry-tabs-section {
  padding: 90px 0;
  background: linear-gradient(180deg, #FFFFFF 0%, #FFF7ED 100%);
}

.tabs-nav {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
}

.tab-btn {
  padding: 14px 32px;
  border-radius: 9999px;
  font-size: 1rem;
  font-weight: 700;
  background: #FFFFFF;
  color: #475569;
  border: 1.5px solid #E2E8F0;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.tab-btn.active {
  background: linear-gradient(90deg, #FF5A2A 0%, #EF7D0A 98%);
  color: #FFFFFF;
  border-color: transparent;
  box-shadow: 0 8px 20px rgba(255, 90, 42, 0.25);
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.industry-card {
  position: relative;
  height: 220px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
  transition: all 0.35s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  text-decoration: none;
}

.industry-card img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
  z-index: 1;
}

.industry-card .overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.05) 0%, rgba(15, 23, 42, 0.8) 100%);
  z-index: 2;
  transition: background 0.3s ease;
}

.industry-card:hover img {
  transform: scale(1.08);
}

.industry-card:hover .overlay {
  background: linear-gradient(180deg, rgba(255, 90, 42, 0.2) 0%, rgba(15, 23, 42, 0.85) 100%);
}

.industry-card-content {
  position: relative;
  z-index: 3;
}

.industry-card-title {
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 4px;
}

.industry-card-arrow {
  color: #FED7AA;
  font-size: 0.8rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  opacity: 0.9;
}

/* ==================== 6 REASONS TO CHOOSE ==================== */
.reasons-section {
  padding: 90px 0;
  background: #FFFFFF;
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 50px;
}

.reason-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.04);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.reason-card:hover {
  transform: translateY(-6px);
  border-color: #FED7AA;
  box-shadow: 0 18px 40px rgba(255, 90, 42, 0.1);
}

.reason-img-wrap {
  width: 100%;
  height: 200px;
  background: #F8FAFC;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reason-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.reason-card:hover .reason-img-wrap img {
  transform: scale(1.05);
}

.reason-body {
  padding: 24px;
  flex-grow: 1;
}

.reason-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 10px;
}

.reason-desc {
  font-size: 0.9rem;
  color: #64748B;
  line-height: 1.6;
}

/* ==================== GOOGLE REVIEWS SECTION ==================== */
.reviews-section {
  padding: 90px 0;
  background: #FFFDF9;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.review-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.04);
  transition: all 0.3s ease;
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: #FED7AA;
  box-shadow: 0 16px 36px rgba(255, 90, 42, 0.08);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #FED7AA;
}

.review-author-name {
  font-size: 1rem;
  font-weight: 700;
  color: #0F172A;
}

.review-badge {
  font-size: 0.75rem;
  color: #059669;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
}

.review-stars {
  color: #F59E0B;
  font-size: 1.1rem;
  margin-bottom: 14px;
  display: flex;
  gap: 3px;
}

.review-text {
  font-size: 0.925rem;
  color: #334155;
  line-height: 1.6;
  font-style: italic;
}

/* ==================== INTERACTIVE MASCOT (KABOT) ==================== */
.kabot-bao-gia {
  position: fixed;
  bottom: 24px;
  right: 28px;
  width: 140px;
  z-index: 99;
  display: block;
  text-decoration: none;
  filter: drop-shadow(0 12px 24px rgba(0, 0, 0, 0.15));
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.kabot-bao-gia:hover {
  transform: scale(1.08) translateY(-4px);
}

.kabot-img-wrapper {
  position: relative;
  width: 100%;
}

.kabot-img-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

/* Two pupils tracking cursor */
.kabot-eyes {
  position: absolute;
  width: 8px;
  height: 8px;
  background: #0F172A;
  border-radius: 50%;
  pointer-events: none;
  transition: transform 0.05s linear;
}

.kabot-eyes.eye-left {
  top: 36%;
  left: 38%;
}

.kabot-eyes.eye-right {
  top: 36%;
  left: 56%;
}

/* Mascot Speech Bubble */
.kabot-bubble {
  position: absolute;
  top: -42px;
  right: -10px;
  background: #FFFFFF;
  border: 1.5px solid #FF5A2A;
  color: #FF5A2A;
  padding: 6px 12px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 800;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(255, 90, 42, 0.2);
  animation: pulseBubble 2s infinite;
}

.kabot-bubble::after {
  content: "";
  position: absolute;
  bottom: -6px;
  right: 24px;
  width: 10px;
  height: 6px;
  background: #FFFFFF;
  border-left: 1.5px solid #FF5A2A;
  border-bottom: 1.5px solid #FF5A2A;
  transform: rotate(-45deg);
}

@keyframes pulseBubble {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

/* ==================== FOOTER COPY ACTION CARDS ==================== */
.footer-copy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.footer-copy-card {
  background: #FFFFFF;
  border: 1.5px dashed #CBD5E1;
  border-radius: 14px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: all 0.25s ease;
}

.footer-copy-card:hover {
  border-color: #FF5A2A;
  background: #FFF7ED;
  transform: translateY(-2px);
}

.footer-copy-info .label {
  font-size: 0.75rem;
  color: #64748B;
  text-transform: uppercase;
  font-weight: 700;
}

.footer-copy-info .value {
  font-size: 0.95rem;
  color: #0F172A;
  font-weight: 800;
  margin-top: 2px;
}

.footer-copy-icon {
  font-size: 1.1rem;
  color: #FF5A2A;
}

/* Toast notification for copy */
.copy-toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #0F172A;
  color: #FFFFFF;
  padding: 12px 24px;
  border-radius: 9999px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  z-index: 9999;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}

.copy-toast.show {
  transform: translateX(-50%) translateY(0);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .hero-dps-title { font-size: 2.6rem; }
  .services-stack-layout { grid-template-columns: 1fr; }
  .services-stack-sidebar { position: static; }
  .counters-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .industry-grid { grid-template-columns: repeat(3, 1fr); }
  .reasons-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .footer-copy-grid { grid-template-columns: 1fr; }
  .stack-card { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .hero-dps-title { font-size: 2.1rem; }
  .counters-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .kabot-bao-gia { width: 110px; bottom: 16px; right: 16px; }
}