/* 
 * aiclothesremoverVN.pw - Phong cách CSS
 * Thiết kế độc đáo cho thị trường Việt Nam
 * Hoàn toàn tương thích với thiết bị di động
 */

:root {
  --primary-color: #009245;    /* Xanh lá - Màu chủ đạo của Việt Nam */
  --secondary-color: #ed1c24;  /* Đỏ - Màu của cờ Việt Nam */
  --accent-color: #006b33;     /* Xanh đậm */
  --light-color: #ffffff;      /* Trắng */
  --dark-color: #222222;       /* Đen cho văn bản */
  --bg-color: #f4f4f4;         /* Màu nền */
  --gradient-primary: linear-gradient(120deg, var(--primary-color), var(--accent-color));
  --box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  --border-radius: 12px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Open Sans', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--dark-color);
  background-color: var(--bg-color);
  line-height: 1.6;
  font-size: 16px;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  font-family: 'Roboto', sans-serif;
}

h1 {
  font-size: 2.6rem;
  font-weight: 800;
}

h2 {
  font-size: 2.2rem;
}

h3 {
  font-size: 1.7rem;
}

p {
  margin-bottom: 18px;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: var(--accent-color);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 32px;
  background: var(--secondary-color);
  color: var(--light-color);
  font-weight: 600;
  border-radius: 6px;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.95rem;
  box-shadow: var(--box-shadow);
}

.btn:hover {
  transform: translateY(-3px);
  background: #c10e15;
  box-shadow: 0 8px 25px rgba(237, 28, 36, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--light-color);
}

.btn-green {
  background: var(--primary-color);
  color: var(--light-color);
}

.btn-green:hover {
  background: var(--accent-color);
}

/* Header */
.header {
  background: var(--light-color);
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 100;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  padding: 16px 0;
  transition: all 0.3s ease;
}

.header.scrolled {
  padding: 12px 0;
  background: rgba(255, 255, 255, 0.98);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--dark-color);
  display: flex;
  align-items: center;
}

.logo-ai {
  color: var(--primary-color);
}

.logo-vn {
  color: var(--light-color);
  background: var(--secondary-color);
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 4px;
  font-size: 1.2rem;
}

.nav {
  display: flex;
  list-style: none;
}

.nav li {
  margin-left: 25px;
}

.nav a {
  color: var(--dark-color);
  font-weight: 600;
  position: relative;
}

.nav a:hover {
  color: var(--primary-color);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.nav a:hover::after {
  width: 100%;
}

.mobile-toggle {
  display: none;
  font-size: 24px;
  cursor: pointer;
}

/* Hero Section */
.hero {
  background: #fff;
  color: var(--dark-color);
  padding: 150px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Cpath d='M0 0h20v20H0V0zm20 20h20v20H20V20z' fill='%23009245' fill-opacity='0.03'/%3E%3C/svg%3E");
}

.hero-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  z-index: 2;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero h1 {
  margin-bottom: 25px;
  line-height: 1.2;
  color: var(--dark-color);
}

.hero h1 span {
  color: var(--secondary-color);
}

.hero p {
  font-size: 1.1rem;
  margin-bottom: 30px;
  color: #555;
}

.hero-image {
  flex: 1;
  text-align: center;
  position: relative;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  margin-top: 30px;
}

.hero-badge {
  display: inline-block;
  background: rgba(237, 28, 36, 0.1);
  color: var(--secondary-color);
  padding: 8px 16px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 20px;
}

/* Features Section */
.features {
  padding: 100px 0;
  background: var(--bg-color);
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  position: relative;
  display: inline-block;
  margin-bottom: 20px;
  color: var(--dark-color);
}

.section-title h2::after {
  content: '';
  position: absolute;
  width: 60px;
  height: 3px;
  background: var(--secondary-color);
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--light-color);
  border-radius: var(--border-radius);
  padding: 40px 30px;
  transition: all 0.3s ease;
  border-top: 4px solid transparent;
  box-shadow: var(--box-shadow);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-top: 4px solid var(--primary-color);
}

.feature-icon {
  width: 70px;
  height: 70px;
  margin-bottom: 25px;
  color: var(--primary-color);
}

.feature-title {
  margin-bottom: 15px;
  font-size: 1.4rem;
  color: var(--dark-color);
}

.feature-text {
  color: #666;
}

/* Process Section */
.process {
  padding: 100px 0;
  background: var(--light-color);
}

.process-container {
  display: flex;
  flex-direction: column;
  gap: 30px;
  margin-top: 50px;
}

.process-item {
  display: flex;
  align-items: flex-start;
  gap: 30px;
  background: var(--bg-color);
  padding: 30px;
  border-radius: var(--border-radius);
  transition: all 0.3s ease;
}

.process-item:hover {
  box-shadow: var(--box-shadow);
}

.process-number {
  width: 60px;
  height: 60px;
  background: var(--primary-color);
  color: var(--light-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  flex-shrink: 0;
}

.process-content {
  flex: 1;
}

.process-title {
  margin-bottom: 10px;
  color: var(--dark-color);
}

.process-text {
  color: #666;
}

/* About Section */
.about {
  padding: 100px 0;
  background: var(--bg-color);
}

.about-flex {
  display: flex;
  align-items: center;
  gap: 60px;
}

.about-image {
  flex: 1;
  position: relative;
}

.about-content {
  flex: 1.2;
}

.about-badge {
  display: inline-block;
  background: rgba(0, 146, 69, 0.1);
  color: var(--primary-color);
  padding: 8px 16px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.about h2 {
  margin-bottom: 20px;
  color: var(--dark-color);
}

.about-text {
  margin-bottom: 30px;
  color: #555;
}

.about-list {
  list-style: none;
  margin-bottom: 30px;
}

.about-list li {
  margin-bottom: 10px;
  display: flex;
  align-items: center;
}

.about-list li:before {
  content: "✓";
  color: var(--primary-color);
  font-weight: bold;
  margin-right: 10px;
}

/* CTA Section */
.cta {
  padding: 80px 0;
  background: var(--gradient-primary);
  color: var(--light-color);
  text-align: center;
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
}

.cta h2 {
  margin-bottom: 20px;
  color: var(--light-color);
}

.cta p {
  margin-bottom: 30px;
  opacity: 0.9;
}

.cta-btn {
  background: var(--secondary-color);
  color: var(--light-color);
  font-size: 1.1rem;
  padding: 15px 35px;
}

.cta-btn:hover {
  background: #c10e15;
  transform: translateY(-3px);
}

/* Footer */
.footer {
  background: #1a1a1a;
  color: #999;
  padding: 80px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-about h3 {
  color: var(--light-color);
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.footer-text {
  margin-bottom: 25px;
}

.footer-logo {
  display: inline-block;
  margin-bottom: 20px;
}

.footer-title {
  color: var(--light-color);
  font-size: 1.2rem;
  margin-bottom: 25px;
  position: relative;
  padding-bottom: 10px;
}

.footer-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 2px;
  background-color: var(--secondary-color);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: #999;
  transition: all 0.3s ease;
}

.footer-links a:hover {
  color: var(--light-color);
  padding-left: 5px;
}

.copyright {
  margin-top: 50px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 992px) {
  h1 {
    font-size: 2.4rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .hero-flex {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .about-flex {
    flex-direction: column;
    text-align: center;
  }
  
  .about-list li {
    justify-content: center;
  }
  
  .about-badge {
    margin: 0 auto 20px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.2rem;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .nav {
    position: fixed;
    top: 70px;
    right: -100%;
    width: 80%;
    height: calc(100vh - 70px);
    background: var(--light-color);
    flex-direction: column;
    align-items: center;
    padding-top: 50px;
    transition: all 0.4s ease;
    z-index: 99;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
  }
  
  .nav.active {
    right: 0;
  }
  
  .nav li {
    margin: 15px 0;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .process-item {
    flex-direction: column;
    text-align: center;
  }
  
  .process-number {
    margin: 0 auto 15px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-title::after {
    left: 50%;
    transform: translateX(-50%);
  }
}

@media (max-width: 576px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  .hero {
    padding: 130px 0 60px;
  }
  
  .container {
    width: 100%;
    padding: 0 20px;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: 10px;
  }
  
  .btn {
    width: 100%;
    text-align: center;
  }
}