/* =============================================
   style.css – Dùng chung cho toàn bộ website
   (tương thích Bootstrap 5 + Font Awesome 6)
   ============================================= */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-300: #93c5fd;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-800: #1e40af;
  --blue-900: #1e3a8a;
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --green-100: #dcfce7;
  --green-400: #4ade80;
  --green-600: #16a34a;
  --purple-50: #faf5ff;
  --purple-600: #9333ea;
  --red-50: #fef2f2;
  --red-600: #dc2626;
  --orange-50: #fff7ed;
  --orange-600: #ea580c;
  --yellow-400: #facc15;
}

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: #fff;
  color: #1f2937;
}

/* ========== Utility classes bổ sung ========== */
.fw-black {
  font-weight: 900 !important;
}
.fw-extrabold {
  font-weight: 800 !important;
}
.tracking-tight {
  letter-spacing: -0.025em !important;
}
.tracking-widest {
  letter-spacing: 0.1em !important;
}
.tracking-3 {
  letter-spacing: 0.3em !important;
}
.text-7xl {
  font-size: 4.5rem !important;
}
.text-blue-400 {
  color: var(--blue-400) !important;
}
.text-blue-700 {
  color: var(--blue-700) !important;
}
.text-slate-400 {
  color: var(--slate-400) !important;
}
.text-slate-500 {
  color: var(--slate-500) !important;
}
.text-slate-600 {
  color: var(--slate-600) !important;
}

/* ========== Content padding (32px left-right) ========== */
.px-content {
  padding-left: 32px;
  padding-right: 32px;
}

@media (max-width: 768px) {
  .px-content {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* Animation keyframes */
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateX(15px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-4px); }
}
@keyframes pulseSlow {
  0%, 100% { opacity: 0.2; }
  50%      { opacity: 0.5; }
}
.animate-bounce {
  animation: bounce 1s infinite;
}
.animate-pulse-slow {
  animation: pulseSlow 2s infinite;
}

/* ========== Header chung ========== */
.vnpt-header {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--slate-100);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.vnpt-header .navbar-brand-custom img {
  height: 2.25rem; /* h-9 = 36px */
}
.vnpt-header .brand-text {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--blue-700);
  text-transform: uppercase;
  letter-spacing: -0.025em;
  line-height: 1;
}
.vnpt-header .brand-sub {
  font-size: 0.625rem; /* text-[10px] */
  font-weight: 700;
  color: var(--slate-500);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-top: 0.25rem;
}

/* Desktop nav link */
.nav-link-custom {
  font-size: 0.75rem;   /* text-[12px] */
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate-600);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  transition: all 0.3s ease;
}
@media (min-width: 992px) {
  .nav-link-custom {
    font-size: 0.8125rem; /* lg:text-[13px] */
  }
}
.nav-link-custom:hover,
.nav-link-custom.active {
  color: var(--blue-700);
  background-color: var(--blue-50);
  transform: translateY(-2px);
}

/* Nút Hotline header */
.btn-hotline {
  background: var(--blue-600);
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: 999px;
  font-size: 0.625rem;   /* text-[10px] */
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 6px -1px rgba(37,99,235,0.2);
  display: inline-flex;
  align-items: center;
}
@media (min-width: 992px) {
  .btn-hotline {
    font-size: 0.75rem; /* lg:text-xs */
  }
}
.btn-hotline:hover {
  background: var(--blue-700);
  color: white;
}
.btn-hotline::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transform: translateX(-100%);
  transition: transform 0.8s;
}
.btn-hotline:hover::before {
  transform: translateX(100%);
}
.btn-hotline .icon-phone {
  animation: bounce 1s infinite;
}

/* Mobile offcanvas */
.offcanvas-end .mobile-nav-link {
  display: block;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  font-weight: 600;
  color: var(--gray-600);
  text-decoration: none;
  transition: background 0.2s;
}
.offcanvas-end .mobile-nav-link:hover,
.offcanvas-end .mobile-nav-link.active {
  background: var(--blue-50);
  color: var(--blue-600);
}

/* ========== Footer chung ========== */
.vnpt-footer {
  background: var(--slate-900);
  color: var(--slate-400);
  padding-top: 4rem;
  padding-bottom: 3rem;
}
.vnpt-footer .footer-logo-img {
  height: 2rem; /* h-8 = 32px */
}
.vnpt-footer .footer-brand-text {
  font-weight: 900;
  color: white;
  text-transform: uppercase;
  letter-spacing: -0.025em;
  font-size: 0.9rem;
}
.vnpt-footer .footer-info {
  font-size: 0.8125rem; /* text-[13px] */
  line-height: 1.6;
}
.vnpt-footer .footer-info i {
  color: var(--blue-400);
  width: 1rem;
  text-align: center;
}
.vnpt-footer .footer-heading {
  font-size: 0.75rem;
  font-weight: 900;
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.3em;
}
.vnpt-footer .social-icon {
  width: 2.75rem;   /* 44px */
  height: 2.75rem;
  border-radius: 50%;
  background: var(--slate-800);
  border: 1px solid var(--slate-700);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  transition: all 0.3s ease;
}
.vnpt-footer .social-icon:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  color: white;
}
.vnpt-footer .social-icon i {
  transition: transform 0.3s ease;
}
.vnpt-footer .social-icon:hover i {
  transform: scale(1.1);
}
.vnpt-footer .social-icon.fb:hover {
  background: #1877f2;
  border-color: #1877f2;
}
.vnpt-footer .social-icon.yt:hover {
  background: #ff0000;
  border-color: #ff0000;
}
.vnpt-footer .social-icon.web:hover {
  background: var(--blue-500);
  border-color: var(--blue-500);
}
.vnpt-footer .website-link {
  color: white;
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
}
.vnpt-footer .website-link:hover {
  color: var(--blue-400);
  text-shadow: 0 0 10px rgba(96, 165, 250, 0.6);
  transform: translateY(-2px);
}
.vnpt-footer .footer-bottom-text {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--slate-600);
}