/* RESET */
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  color: #111827;
  background: #fff;
}
.container {
  max-width: 1200px;
  margin: auto;
  padding: 0 20px;
}

/* HERO */
.hero {
  padding: 96px 0 80px;
}
.hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
}
.hero .red { color: #ff3b3b; }
.hero .blue { color: #3f5cff; }

.hero p {
  max-width: 560px;
  color: #6b7280;
  line-height: 1.7;
  margin-bottom: 32px;
}

.btn-primary {
  background: #ff3b3b;
  color: #fff;
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 600;
  display: inline-block;
}
.btn-primary:hover {
  background: #e53232;
}

/* FOOTER */
.footer {
  border-top: 1px solid #e5e7eb;
  padding: 64px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 40px;
}
.footer-logo {
  height: 36px;
  margin-bottom: 16px;
}

/* EMAIL */
.footer-subscribe {
  display: flex;
  max-width: 300px;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  overflow: hidden;
}
.footer-subscribe input {
  flex: 1;
  border: none;
  padding: 12px;
  outline: none;
}
.footer-subscribe button {
  background: #ff3b3b;
  border: none;
  color: #fff;
  padding: 0 16px;
  cursor: pointer;
}

/* LINKS */
.footer h5 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
}
.footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer li {
  margin-bottom: 10px;
}
.footer a {
  font-size: 14px;
  color: #6b7280;
}
.footer a:hover {
  color: #ff3b3b;
}

/* BOTTOM */
.footer-bottom {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid #e5e7eb;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #9ca3af;
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  background: #ff3b3b;
  color: #fff;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 14px;
}

/* MOBILE */
@media (max-width: 900px) {
  .hero h1 { font-size: 30px; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
  }
}
/* ===== FORCE RESET FOOTER ===== */
footer,
.footer {
  background: #ffffff !important;
  color: #111827 !important;
}

/* GRID */
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 48px;
}

/* LOGO */
.footer-logo {
  height: 36px;
  margin-bottom: 16px;
}

/* EMAIL BOX */
.footer-subscribe {
  display: flex;
  max-width: 320px;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  overflow: hidden;
}
.footer-subscribe input {
  flex: 1;
  padding: 12px 14px;
  border: none;
  outline: none;
}
.footer-subscribe button {
  background: #ff3b3b;
  color: #fff;
  border: none;
  padding: 0 18px;
  cursor: pointer;
}

/* TITLES */
.footer h5 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
  color: #111827;
}

/* LINKS */
.footer a {
  font-size: 14px;
  color: #6b7280;
  text-decoration: none;
}
.footer a:hover {
  color: #ff3b3b;
}

/* LIST */
.footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer li {
  margin-bottom: 10px;
}

/* DIVIDER */
.footer-bottom {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid #e5e7eb;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #9ca3af;
}

/* SOCIAL */
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #ff3b3b;
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 14px;
}

/* MOBILE */
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
  }
}
.btn-cta {
  display: inline-block;
  background: linear-gradient(135deg, #1e8e5a, #0f5132);
  color: #fff;
  padding: 14px 32px;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(15, 81, 50, 0.25);
  transition: all 0.25s ease;
}

.btn-cta:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(15, 81, 50, 0.35);
}
/* ======================
   COLOR SYSTEM – FELIX
====================== */
:root {
  --felix-dark: #0f5132;   /* xanh đậm */
  --felix-green: #2fbf71; /* xanh lá */
  --felix-soft: #eaf7f0;  /* nền nhạt */
  --text-dark: #1f2937;
  --text-muted: #6b7280;
}

/* ======================
   HERO TITLE
====================== */
.hero-title {
  font-size: clamp(32px, 4vw, 54px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--text-dark);
}

/* chữ xanh đậm */
.text-primary {
  color: var(--felix-dark);
}

/* chữ xanh lá nổi bật */
.text-accent {
  color: var(--felix-green);
  position: relative;
}

/* gạch nhấn premium */
.text-accent::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 8px;
  background: rgba(47, 191, 113, 0.25);
  border-radius: 6px;
}

/* ======================
   DESCRIPTION
====================== */
.hero-desc {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 560px;
}

/* brand name */
.brand-name {
  color: var(--felix-dark);
  font-weight: 700;
}
.footer-subscribe {
  display: flex;
  max-width: 320px;
  border-radius: 999px;
  overflow: hidden;
  background: #ffffff;
  box-shadow: 0 6px 20px rgba(15, 81, 50, 0.15);
}

/* INPUT */
.footer-subscribe input {
  flex: 1;
  border: none;
  padding: 12px 16px;
  font-size: 14px;
  outline: none;
  color: #0f5132;
}

.footer-subscribe input::placeholder {
  color: #94a3a0;
}

/* BUTTON */
.footer-subscribe button {
  background: linear-gradient(135deg, #0f5132, #2fbf71);
  color: #ffffff;
  border: none;
  padding: 0 18px;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
}

/* HOVER */
.footer-subscribe button:hover {
  background: linear-gradient(135deg, #2fbf71, #0f5132);
}
.clean-style .chat-item {
  width: auto;
  height: auto;
  background: transparent;
  box-shadow: none;
  border-radius: 0;
  margin: 10px 0;
}

.clean-style .chat-item i {
  font-size: 42px; /* ICON TO */
  line-height: 1;
  transition: transform .2s ease;
}

.clean-style .chat-item:hover i {
  transform: scale(1.12);
}
.clean-style .chat-item {
  width: auto;
  height: auto;
  background: transparent;
  box-shadow: none;
  border-radius: 0;
  margin: 10px 0;
}

.clean-style .chat-item i {
  font-size: 42px; /* ICON TO */
  line-height: 1;
  transition: transform .2s ease;
}

.clean-style .chat-item:hover i {
  transform: scale(1.12);
}
.clean-style .chat-item.messenger i {
  background: linear-gradient(
    135deg,
    #00B2FF,
    #006AFF,
    #A033FF,
    #FF5CA8
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.clean-style .chat-item.line i {
  color: #00C300;
}
.clean-style .chat-item.whatsapp i {
  color: #25D366;
}
.chat-float.clean-style {
  position: fixed;
  right: 18px;
  bottom: 90px;              /* né nút back-to-top / footer */
  z-index: 9999;
}

.chat-float.clean-style .chat-options {
  display: flex;
  flex-direction: column;
  gap: 14px;                 /* khoảng cách giữa icon */
  align-items: center;
}
.chat-float.clean-style .chat-toggle {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: #0b3d2e;       /* xanh đậm theo brand */
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  cursor: pointer;
  margin-bottom: 12px;
  box-shadow: 0 8px 20px rgba(0,0,0,.25);
}
.clean-style .chat-item {
  background: transparent;
  box-shadow: none;
}

.clean-style .chat-item i {
  font-size: 42px;
  line-height: 1;
}
@media (max-width: 768px) {
  .chat-float.clean-style {
    right: 12px;
    bottom: 70px;
  }

  .clean-style .chat-item i {
    font-size: 36px;
  }
}
.chat-float {
  position: fixed;
  right: 22px;
  bottom: 24px;
  z-index: 9999;
  transition: transform .4s ease, opacity .4s ease;
}

/* Ẩn khi scroll xuống */
.chat-float.hide {
  opacity: 0;
  transform: translateY(80px);
  pointer-events: none;
}

/* Toggle */
.chat-toggle {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #0f172a;
  color: #fff;
  font-size: 26px;
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}

/* OPTIONS */
.chat-options {
  position: absolute;
  bottom: 70px;
  right: 6px;
}

.chat-item {
  position: absolute;
  font-size: 34px;
  opacity: 0;
  transform: scale(.4);
  transition: .45s cubic-bezier(.25,.8,.25,1);
}

/* ===== VÒNG CUNG ===== */
.chat-float.active .chat-item.fb {
  transform: translate(-70px, -10px) scale(1);
  opacity: 1;
}
.chat-float.active .chat-item.line {
  transform: translate(-50px, -70px) scale(1);
  opacity: 1;
}
.chat-float.active .chat-item.wa {
  transform: translate(0, -95px) scale(1);
  opacity: 1;
}

/* MÀU LOGO GỐC */
.chat-item.fb { color: #0084ff; }
.chat-item.line { color: #00c300; }
.chat-item.wa { color: #25D366; }

/* TOOLTIP */
.chat-item::after {
  content: attr(data-tip);
  position: absolute;
  right: 42px;
  top: 50%;
  transform: translateY(-50%);
  background: #111;
  color: #fff;
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: .25s;
}

.chat-item:hover::after {
  opacity: 1;
}
/* ===== CHAT FLOAT WRAPPER ===== */
.chat-float {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 9999;
  transition: transform .35s ease, opacity .35s ease;
}

/* Ẩn khi scroll */
.chat-float.hide {
  opacity: 0;
  transform: translateY(80px);
  pointer-events: none;
}

/* ===== TOGGLE ===== */
.chat-toggle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #0f172a;
  color: #fff;
  font-size: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(0,0,0,.3);
}

/* ===== OPTIONS WRAP ===== */
.chat-options {
  position: absolute;
  right: 8px;
  bottom: 72px;
}

/* ===== ICON ===== */
.chat-item {
  position: absolute;
  font-size: 38px;           /* 👈 TO HƠN */
  opacity: 0;
  transform: scale(.5);
  transition: 
    transform .45s cubic-bezier(.4,1.3,.5,1),
    opacity .3s ease;
}

/* ===== VÒNG CUNG ĐẸP ===== */
.chat-float.active .chat-item.fb {
  transform: translate(-72px, -8px) scale(1);
  opacity: 1;
}

.chat-float.active .chat-item.line {
  transform: translate(-52px, -62px) scale(1);
  opacity: 1;
}

.chat-float.active .chat-item.wa {
  transform: translate(-6px, -96px) scale(1);
  opacity: 1;
}

/* ===== MÀU LOGO GỐC ===== */
.chat-item.fb { color: #0084ff; }      /* Messenger */
.chat-item.line { color: #00c300; }    /* LINE */
.chat-item.wa { color: #25D366; }      /* WhatsApp */

/* ===== TOOLTIP ===== */
.chat-item::after {
  content: attr(data-tip);
  position: absolute;
  right: 48px;
  top: 50%;
  transform: translateY(-50%);
  background: #111;
  color: #fff;
  font-size: 12px;
  padding: 5px 9px;
  border-radius: 6px;
  opacity: 0;
  white-space: nowrap;
  transition: .25s;
  pointer-events: none;
}

.chat-item:hover::after {
  opacity: 1;
}
/* ===== ICON CIRCLE ===== */
.chat-item {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;

  background: #fff;               /* nền trắng cho sạch */
  box-shadow: 0 8px 20px rgba(0,0,0,.18);

  transition: transform .2s ease;
}

/* ICON SIZE */
.chat-item i {
  font-size: 30px;                 /* 👈 TO LÊN */
  line-height: 1;
}

/* HOVER */
.chat-item:hover {
  transform: scale(1.1);
}

/* ===== BRAND COLORS ===== */
.chat-item.fb i {
  background: linear-gradient(135deg,#00B2FF,#006AFF,#A033FF,#FF5CA8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.chat-item.line i {
  color: #00C300;
}

.chat-item.wa i {
  color: #25D366;
}
.chat-float {
  position: fixed;
  right: 22px;
  bottom: 28px;
  z-index: 9999;
}
.chat-toggle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #0d563e;
  color: #fff;
  font-size: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(0,0,0,.3);
}
.chat-options {
  position: absolute;
  right: 50%;
  bottom: 50%;
  transform: translate(50%,50%);
  pointer-events: none;
}
.chat-item {
  position: absolute;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;

  box-shadow: 0 8px 20px rgba(0,0,0,.18);

  opacity: 0;
  transform: scale(.4);
  transition: 
    transform .4s cubic-bezier(.4,1.3,.4,1),
    opacity .25s ease;
}
.chat-float.active .chat-item {
  opacity: 1;
  pointer-events: auto;
}

/* Messenger – trái dưới */
.chat-float.active .chat-item.fb {
  transform: translate(-80px, -10px) scale(1);
}

/* LINE – trái trên */
.chat-float.active .chat-item.line {
  transform: translate(-55px, -70px) scale(1);
}

/* WhatsApp – trên */
.chat-float.active .chat-item.wa {
  transform: translate(0, -95px) scale(1);
}
.chat-item i {
  font-size: 30px;
}

.chat-item.fb i {
  background: linear-gradient(135deg,#00B2FF,#006AFF,#A033FF,#FF5CA8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.chat-item.line i { color: #00C300; }
.chat-item.wa i { color: #25D366; }