/* --- Variables & General --- */
:root {
  --primary-green: #4E6E5D;
  /* Vintage Green */
  --light-green: #A3C9A8;
  --dark-green: #2C3E33;
  --bg-loang: linear-gradient(135deg, #2c3e33 0%, #4e6e5d 50%, #84a98c 100%);
  --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  overflow-x: hidden;
}


body {
  font-family: var(--font-main);
  overflow-x: hidden;
  color: #333;
  background-color: #f9fbf9;
  width: 100%;
  max-width: 100%;
}

/* --- Typography --- */
.font-vintage {
  font-family: 'Courier New', Courier, monospace;
  /* Kiểu máy đánh chữ */
  font-weight: bold;
  letter-spacing: 1px;
}

.section-title h2 {
  color: var(--dark-green);
  text-transform: uppercase;
  font-weight: 700;
}

.section-title .line {
  width: 60px;
  height: 3px;
  background-color: var(--primary-green);
  margin: 10px auto;
}

/* --- Navbar --- */
.navbar {
  transition: all 0.5s ease;
  padding: 20px 0;
}

.navbar.scrolled {
  background-color: var(--dark-green);
  padding: 10px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.navbar-brand i {
  color: var(--light-green);
}

.navbar .nav-link {
  color: white;
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.9rem;
}

/* Khi menu được Active */
.navbar-nav .nav-link.active {
  color: #A3C9A8 !important;
  /* Thêm gạch chân nếu thích */
  transition: all 0.3s;
}

/* (Tuỳ chọn) Màu khi di chuột vào cũng giống màu active luôn */
.navbar-nav .nav-link:hover {
  color: #A3C9A8;
}

/* --- Banner --- */
#home {
  height: 100vh;
  background: url('img/bg_1hi.jpg') no-repeat center top/cover fixed;
  background-attachment: fixed;
  position: relative;
  overflow: hidden;
}

/* Canvas inside home - cover hero area and allow drawing notes */
#home canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 2;
}

/* Ensure overlay sits below canvas and content above canvas */
#home .bg-overlay {
  z-index: 1;
}

#home .container {
  position: relative;
  z-index: 3;
}

/* Hiệu ứng màu loang phủ lên banner */
.bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-loang);
  opacity: 0.85;
  mix-blend-mode: multiply;
}

.text-highlight {
  color: var(--light-green);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.cursor {
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

.slogan {
  font-family: 'Times New Roman', Times, serif;
  border-left: 3px solid var(--light-green);
  padding-left: 15px;
}

.custom-btn {
  border-radius: 50px;
  padding: 10px 30px;
  font-weight: 600;
  transition: 0.3s;
}

.custom-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.social-icons a {
  color: white;
  font-size: 1.5rem;
  margin-right: 20px;
  transition: 0.3s;
}

.social-icons a:hover {
  color: var(--light-green);
  transform: scale(1.2);
}

/* --- About Me --- */
.section-padding {
  padding: 80px 0;
}

.about-img-wrapper {
  position: relative;
  padding: 10px;
  border: 3px solid var(--primary-green);
  border-radius: 10px;
}


.vintage-tabs .nav-link {
  color: var(--dark-green);
  border: none;
  border-bottom: 2px solid transparent;
}

.vintage-tabs .nav-link.active {
  color: white;
  background-color: var(--primary-green);
  border-bottom: 2px solid transparent;
  border-radius: 6px;
  padding: 0.4rem 0.8rem;
}

.vintage-table th {
  width: 30%;
  color: var(--primary-green);
}

.progress-bar {
  background-color: var(--primary-green);
}

.timeline-item {
  border-left: 2px solid var(--light-green);
  padding-left: 20px;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 5px;
  width: 10px;
  height: 10px;
  background: var(--dark-green);
  border-radius: 50%;
}

/* --- Projects (Slick Slider) --- */
.bg-light-green {
  background-color: #e9f5eb;
}

.project-card {
  width: 300px;
  display: inline-block;
  color: inherit;
}

.project-card,
.project-card:hover,
.project-card:visited,
.project-card:active {
  color: inherit;
  text-decoration: none;
}

.project-card .card {
  transition: 0.3s;
  cursor: pointer;
  height: 300px;
}

.project-card .card-title,
.project-card .card-text {
  color: inherit;
}

.project-card:hover .card-title,
.project-card:hover .card-text {
  color: white;
}

.card-img-wrapper img {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  height: auto;
  object-fit: cover;
}

.project-card:hover .card {
  background-color: var(--primary-green);
  color: white;
}

.project-card .card-img-top {
  transition: transform 0.5s ease;
}

.project-card:hover .card-img-top {
  transform: scale(1.1);
}

.slick-dots li button:before {
  font-size: 12px;
  color: var(--dark-green);
}

.slick-dots li.slick-active button:before {
  color: var(--primary-green);
}

/* Custom triangular arrows for project slider */
.project-slider {
  position: relative;
}

.custom-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  border: 2px solid var(--primary-green);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
  z-index: 5;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
}

.custom-arrow:before {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
}

.custom-arrow.prev {
  left: -20px;
}

.custom-arrow.prev:before {
  border-right: 14px solid var(--primary-green);
}

.custom-arrow.next {
  right: -20px;
}

.custom-arrow.next:before {
  border-left: 14px solid var(--primary-green);
}

/* --- Connection --- */
.connect-card {
  background: white;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  transition: 0.3s;
  height: 100%;
  border: 1px solid #eee;
}

.connect-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary-green);
}

.icon-circle {
  width: 60px;
  height: 60px;
  background: var(--light-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  font-size: 1.5rem;
  color: var(--dark-green);
}

.highlight-card {
  background: #f0fff4;
  border: 2px dashed var(--primary-green);
}

/* --- Donate --- */
.bg-vintage-dark {
  background-color: var(--dark-green);
}

.donate-humor {
  font-style: italic;
  opacity: 0.8;
  max-width: 1000px;
  margin: 0 auto;
}

.nav-pills .nav-link.active {
  background-color: var(--light-green);
  color: var(--dark-green);
}

.nav-pills .nav-link {
  color: white;
  border: 1px solid white;
  margin: 0 5px;
}

.qr-card {
  overflow: hidden;
}

.qr-card img {
  transition: 0.3s;
}

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

.donate-link-card {
  text-decoration: none;
  display: block;
}

.hover-effect:hover {
  background-color: var(--primary-green) !important;
  transform: translateY(-5px);
  transition: 0.3s;
}


@media screen and (max-width: 992px) {
  .navbar {
    background-color: var(--dark-green);
  }

  #home {
    background: url('img/bg_1hi.jpg') no-repeat center center/cover;
    background-attachment: scroll;
  }
}

@media screen and (max-width: 576px) {
  #home {
    height: 100vh;
    min-height: 500px;
    background: url('img/bg_1hi.jpg') no-repeat center center/cover;
    background-attachment: scroll;
    background-size: cover;
  }

  #home .container {
    padding: 20px 15px;
  }

  #home h1 {
    font-size: 1.8rem !important;
  }

  #home h2 {
    font-size: 1.2rem !important;
  }
}