/* style/index.css */

:root {
  --primary-color: #2F6BFF;
  --secondary-color: #6FA3FF;
  --button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  --card-bg: #FFFFFF;
  --background-page: #F4F7FB;
  --text-main-color: #1F2D3D;
  --text-black: #000000;
  --border-color: #D6E2FF;
  --glow-color: #A5C4FF;
  --guide-box-bg: #f5e6d3;
}

.page-index {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-main-color);
  background-color: var(--background-page);
}

/* General Section Styling */
.page-index__section {
  padding: 40px 0;
  margin-bottom: 20px;
}

.page-index__section-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
}

.page-index__section-title {
  font-size: 2.2em;
  font-weight: bold;
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary-color);
}

.tieudevip {
  position: relative;
  display: inline-block;
  padding: 8px 20px;
  margin: 0 auto 40px auto;
  font-size: 2.2em;
  font-weight: bold;
  text-align: center;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(47, 107, 255, 0.2);
  text-transform: uppercase;
}

/* Buttons */
.page-index__btn-primary {
  display: inline-block;
  padding: 12px 25px;
  background: var(--button-gradient);
  color: #ffffff;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  text-align: center;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-index__btn-primary:hover {
  opacity: 0.9;
  box-shadow: 0 4px 10px rgba(47, 107, 255, 0.4);
}

.page-index__btn--inline {
  margin-top: 20px;
  margin-right: 10px;
}

.page-index__btn--large {
  font-size: 1.1em;
  padding: 15px 30px;
}

.page-index__view-all-button-container {
  text-align: center;
  margin-top: 40px;
}

/* Module 0: Hero Carousel Section */
.page-index__hero-carousel-section {
  padding-top: 10px; /* Adjusted to 10px as per instructions, assuming body has header offset */
  padding-bottom: 0;
  margin-bottom: 0;
  background-color: var(--background-page);
}

.page-index__hero-slider {
  position: relative;
  overflow: hidden;
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.page-index__hero-slide {
  display: none;
  width: 100%;
}

.page-index__hero-slide.is-active {
  display: block;
}

.page-index__hero-slide img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 1020 / 351;
  object-fit: cover;
}

.page-index__hero-slider-prev,
.page-index__hero-slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(0, 0, 0, 0.5);
  color: #fff;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  font-size: 1.5em;
  border-radius: 50%;
  z-index: 10;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.page-index__hero-slider-prev:hover,
.page-index__hero-slider-next:hover {
  opacity: 1;
}

.page-index__hero-slider-prev {
  left: 10px;
}

.page-index__hero-slider-next {
  right: 10px;
}

.page-index__hero-slider-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.page-index__hero-slider-dot {
  display: block;
  width: 10px;
  height: 10px;
  background-color: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  cursor: pointer;
}

.page-index__hero-slider-dot.is-active {
  background-color: #fff;
}

/* Module 1: Operation Guide Section */
.page-index__guide-section {
  padding-top: 60px;
  padding-bottom: 60px;
  background-color: var(--background-page);
}

.page-index__guide-box {
  max-width: 100%;
  margin: 0 auto;
  padding: 16px 20px 24px;
  background: var(--guide-box-bg);
  border-radius: 4px;
  box-sizing: border-box;
}

.page-index__guide-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start; /* For mountain effect */
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.page-index__guide-card {
  display: block;
  flex: 0 0 calc(20% - 8px); /* Account for gap */
  max-width: calc(20% - 8px);
  text-decoration: none;
  transition: transform 0.3s ease;
  border-radius: 8px;
  overflow: hidden;
}

.page-index__guide-card:hover {
  transform: translateY(-5px);
}

.page-index__guide-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 250 / 350; /* Fixed aspect ratio for portrait */
  object-fit: contain;
  display: block;
}

/* PC specific mountain layout */
.page-index__guide-card--pos-1,
.page-index__guide-card--pos-5 { padding-top: 50px; }
.page-index__guide-card--pos-2,
.page-index__guide-card--pos-4 { padding-top: 25px; }
.page-index__guide-card--pos-3 { padding-top: 0; }

/* Module 2: Home Content Long Text Section */
.page-index__home-content-section {
  padding-top: 60px;
  padding-bottom: 60px;
  background-color: var(--background-page);
}

.page-index__home-content-row {
  display: flex;
  justify-content: center;
}