/* Header */
.header {
  background: #111;
  color: #fff;
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.header .container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Logo */
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  letter-spacing: 1px;
  transition: color 0.3s ease;
}
.logo:hover {
  color: #3498db;
}

/* Nav */
.nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.nav ul li a {
  text-decoration: none;
  color: #ddd;
  font-weight: 500;
  transition: color 0.3s ease;
}
.nav ul li a:hover {
  color: #fff;
}

/* Button "Tính năng" */
.btn-feature {
  background: #3498db;
  color: #fff !important;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-weight: 600;
  transition: background 0.3s ease, transform 0.2s ease;
}
.btn-feature:hover {
  background: #217dbb;
  transform: translateY(-2px);
}

/* Nền blur */
body {
  margin: 0;
  font-family: system-ui, sans-serif;
  color: #fff;
  background: #111; /* fallback màu nền khi chưa load ảnh */
}

/* Khối hero chiếm full màn hình */
.hero-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('https://picsum.photos/1600/900?blur=10') no-repeat center/cover;
}

/* Hero card */
.hero {
  width: 90%;
  max-width: 1000px;
  padding: 2rem;
  border-radius: 16px;
  backdrop-filter: blur(14px);
  background: rgba(0,0,0,0.55);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.hero-content {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

/* Intro bên trái */
.intro {
  flex: 1;
}
.intro h1 {
  font-size: 2.5rem;
  margin: 0 0 1rem;
}
.intro p {
  font-size: 1.1rem;
  max-width: 500px;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}
.btn.cta {
  background: #22c1ff;
  padding: 0.8rem 1.6rem;
  font-size: 1rem;
}

/* Cards bên phải */
.cards {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.card {
  background: rgba(255,255,255,0.1);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}
.card h3 {
  margin: 0 0 0.5rem;
  color: #fff;
}
.card p {
  margin-bottom: 1rem;
  color: #ddd;
  font-size: 0.9rem;
}

/* Nút chung */
.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  text-decoration: none;
  background: #3498db;
  color: white;
  font-weight: 600;
  transition: background 0.3s;
}
.btn:hover { background: #2980b9; }
.btn.pro { background: #e67e22; }
.btn.pro:hover { background: #ca6511; }

/* Animation */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s forwards;
}
.delay-1 { animation-delay: 0.6s; }

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



/* ARMG BOOT Feauture*/
.features {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  padding: 4rem 2rem;
  flex-wrap: wrap;
  background: rgba(0,0,0,0.6);
  border-radius: 20px;
  max-width: 1200px;
  margin: 2rem auto;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

/* Laptop mockup */
.laptop {
  width: 420px;
  text-align: center;
  position: relative;
}

.screen {
  width: 100%;
  height: 260px;
  background: #111 url("computer-preview/computer-preview.png") no-repeat center/cover;
  border: 8px solid #333;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.7);
}

/* Đế laptop */
.base {
  width: 100%;
  height: 16px;
  background: #444;
  border-radius: 0 0 10px 10px;
  margin-top: -4px;
}
.stand {
  width: 80px;
  height: 10px;
  background: #333;
  margin: 6px auto 0;
  border-radius: 4px;
}

/* Info content */
.info {
  flex: 1;
  min-width: 260px;
  color: #fff;
}
.info h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}
.info ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.info li {
  margin-bottom: 0.8rem;
  padding-left: 1.5rem;
  position: relative;
  font-size: 1.05rem;
}
.info li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: #22c1ff;
  font-weight: bold;
}


/* Tính năng update gần đây */
/* Section */
.updates {
  max-width: 1000px;
  margin: 3rem auto;
  padding: 2rem;
  text-align: center;
}
.updates h2 {
  font-size: 2rem;
  margin-bottom: 2rem;
  color: #222;
}

/* Cards */
.update-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}
.update-card {
  flex: 1 1 280px;
  background: #fff;
  padding: 1.5rem;
  border-radius: 14px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.1);
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.update-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 24px rgba(0,0,0,0.15);
}
.update-card h3 {
  margin-top: 0;
  color: #3498db;
}
.update-card p {
  margin-top: 0.6rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: #555;
}

/* Animation */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s forwards;
}
.delay-1 { animation-delay: 0.4s; }
.delay-2 { animation-delay: 0.8s; }

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


/* Bảng giá so sánh */
/* Section */
.pricing {
  max-width: 1000px;
  margin: 3rem auto;
  padding: 2rem;
  text-align: center;
}
.pricing h2 {
  font-size: 2rem;
  margin-bottom: 2rem;
  color: #222;
}

/* Cards container */
.pricing-cards {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Each card */
.price-card {
  flex: 1 1 280px;
  background: #fff;
  padding: 2rem;
  border-radius: 14px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.1);
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}
.price-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.15);
}
.price-card h3 {
  margin-top: 0;
  font-size: 1.5rem;
  color: #3498db;
}
.price-card .price {
  font-size: 1.4rem;
  font-weight: bold;
  margin: 0.5rem 0 1.2rem;
  color: #111;
}
.price-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}
.price-card ul li {
  margin: 0.6rem 0;
  position: relative;
  padding-left: 1.4rem;
}
.price-card ul li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: #2ecc71;
  font-weight: bold;
}
.price-card ul li.disabled {
  color: #aaa;
}
.price-card ul li.disabled::before {
  content: "✖";
  color: #e74c3c;
}

/* Rainbow Pro card */
.pro-highlight {
  background: linear-gradient(270deg, 
    #ff0000, #ff9900, #ffee00, 
    #33cc33, #3399ff, #9900ff, #ff0099, #ff0000);
  background-size: 600% 600%;
  animation: rainbowBG 10s linear infinite;
  color: white;
}
.pro-highlight .overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.35); /* overlay giúp text dễ đọc */
  border-radius: 14px;
  z-index: 0;
}
.pro-highlight h3,
.pro-highlight .price,
.pro-highlight ul,
.pro-highlight a {
  position: relative;
  z-index: 1;
}

/* Rainbow animation */
@keyframes rainbowBG {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  border-radius: 8px;
  text-decoration: none;
  background: #3498db;
  color: white;
  font-weight: 600;
  transition: background 0.3s;
}
.btn:hover { background: #2980b9; }
.btn.pro { background: #e67e22; }
.btn.pro:hover { background: #ca6511; }

.price-card:not(.pro-highlight) {
  background: #fff;
  color: #111;
}
.price-card:not(.pro-highlight) h3 {
  color: #000;       /* Tiêu đề Free đen rõ */
  font-weight: 700;  /* Đậm hơn */
}
.price-card:not(.pro-highlight) .price {
  color: #000;       /* Giá Free đen rõ */
  font-weight: 700;
}
.price-card:not(.pro-highlight) ul li {
  color: #222;       /* Nội dung chữ đậm */
  font-weight: 500;
}


/* Vì sao nên chọn ARGM BOOT */
.reasons {
  padding: 4rem 2rem;
  text-align: center;
  background: #f5f7fa;
}

.reasons h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #222;
  margin-bottom: 2rem;
}

.reasons h2 span {
  color: #3498db;
}

.reason-cards {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 2rem;
  flex-wrap: wrap;
  max-width: 1000px;
  margin: 0 auto;
}

.reason-card {
  flex: 1 1 280px;
  background: #fff;
  padding: 2rem 1.5rem;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  text-align: center;
}

.reason-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.reason-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #111;
  margin-bottom: 0.8rem;
}

.reason-card p {
  color: #333;
  font-size: 1rem;
  line-height: 1.5;
  font-weight: 400;
}

/* Characters */
.character {
  width: 90px;
  height: 100px;
  margin: 0 auto 1rem;
  position: relative;
}

/* Monitor */
.monitor {
  width: 70px;
  height: 45px;
  background: #222;
  border-radius: 6px;
  margin: auto;
  position: relative;
}
.monitor-screen {
  width: 60px;
  height: 35px;
  background: #4cafef;
  margin: 5px auto;
  border-radius: 4px;
  position: relative;
}
.monitor::after {
  content: '';
  display: block;
  width: 24px;
  height: 6px;
  background: #555;
  margin: 3px auto 0;
  border-radius: 2px;
}

/* Exclamation cho "Bị lỗi máy" */
.exclamation {
  width: 4px;
  height: 16px;
  background: #fff;
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
}
.exclamation::after {
  content: '';
  width: 4px; height: 4px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  bottom: -6px; left: 0;
}

/* BSOD :( */
.face-bsod {
  background: #0b63a0;
}
.face-bsod .eye {
  width: 6px; height: 6px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 8px;
}
.face-bsod .eye.left { left: 14px; }
.face-bsod .eye.right { right: 14px; }
.face-bsod .mouth.sad {
  width: 20px;
  height: 10px;
  border: 2px solid #fff;
  border-bottom: none;
  border-radius: 0 0 20px 20px;
  position: absolute;
  bottom: 6px; left: 50%;
  transform: translateX(-50%) rotate(180deg); /* miệng cong xuống :( */
}

/* Folder cho mất dữ liệu */
.folder {
  width: 55px;
  height: 38px;
  background: #f1c40f;
  border-radius: 4px;
  margin: auto;
  position: relative;
}
.folder::before {
  content: '';
  width: 22px; height: 12px;
  background: #f39c12;
  border-radius: 2px 2px 0 0;
  position: absolute;
  top: -10px; left: 6px;
}

/* User (ảnh tròn) */
.character.person {
  width: 100px;
  height: 100px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  border: 3px solid #3498db;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);

  /* Background image */
  background: url("computer-preview/luffy-laugh.webp") no-repeat center/cover;
}

/* Animation */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp .8s forwards;
}
.delay-1 { animation-delay: .3s; }
.delay-2 { animation-delay: .6s; }
.delay-3 { animation-delay: .9s; }

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


/* footer */
.footer {
  background: #111;
  padding: 1.2rem 1rem;
  text-align: center;
  margin-top: auto;
}

.footer .copyright {
  font-size: 12px;
  color: #aaa;
  margin: 0;
}

.footer .footer-link {
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  transition: color 0.3s;
}

.footer .footer-link:hover {
  color: #22c1ff;
}