/* style/upcoming-events.css */

/* Định nghĩa biến màu dựa trên chủ đề */
:root {
  --page-upcoming-events-primary-color: #FFD700; /* Vàng kim */
  --page-upcoming-events-secondary-color: #DC143C; /* Đỏ sẫm */
  --page-upcoming-events-text-light: #ffffff; /* Cho nền tối */
  --page-upcoming-events-text-dark: #333333; /* Cho nền sáng */
  --page-upcoming-events-bg-dark: #000; /* Nền body */
  --page-upcoming-events-card-bg: rgba(255, 255, 255, 0.1); /* Nền card trong suốt trên nền tối */
  --page-upcoming-events-border-color: rgba(255, 255, 255, 0.2);
}

/* Đảm bảo nội dung không bị che bởi header cố định */
.page-upcoming-events {
  padding-top: 120px; /* Khoảng cách cho header cố định */
  background-color: var(--page-upcoming-events-bg-dark); /* Nền tối cho toàn bộ trang */
  color: var(--page-upcoming-events-text-light); /* Chữ màu sáng trên nền tối */
}

@media (max-width: 768px) {
  .page-upcoming-events {
    padding-top: 100px; /* Khoảng cách cho header cố định trên mobile */
  }
}

/* HERO Banner */
.page-upcoming-events__hero-banner {
  background: linear-gradient(135deg, var(--page-upcoming-events-primary-color), var(--page-upcoming-events-secondary-color));
  padding: 80px 20px;
  text-align: center;
  color: var(--page-upcoming-events-text-light);
}

.page-upcoming-events__hero-content {
  max-width: 900px;
  margin: 0 auto;
}

.page-upcoming-events__main-title {
  font-size: 3.5em;
  margin-bottom: 20px;
  color: var(--page-upcoming-events-text-light);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  line-height: 1.2;
}

.page-upcoming-events__hero-description {
  font-size: 1.3em;
  margin-bottom: 30px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
}

.page-upcoming-events__hero-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
}

/* Nút chung */
.page-upcoming-events__btn {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  text-align: center;
}

.page-upcoming-events__btn--primary {
  background-color: var(--page-upcoming-events-primary-color);
  color: var(--page-upcoming-events-text-dark);
  box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
}

.page-upcoming-events__btn--primary:hover {
  background-color: darken(var(--page-upcoming-events-primary-color), 10%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 215, 0, 0.6);
}

.page-upcoming-events__btn--secondary {
  background-color: transparent;
  color: var(--page-upcoming-events-text-light);
  border: 2px solid var(--page-upcoming-events-text-light);
}

.page-upcoming-events__btn--secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
  border-color: var(--page-upcoming-events-primary-color);
  color: var(--page-upcoming-events-primary-color);
}

.page-upcoming-events__btn--small {
  padding: 10px 20px;
  font-size: 0.9em;
  border-radius: 6px;
  background-color: var(--page-upcoming-events-primary-color);
  color: var(--page-upcoming-events-text-dark);
}

.page-upcoming-events__btn--small:hover {
  background-color: darken(var(--page-upcoming-events-primary-color), 10%);
}

.page-upcoming-events__btn--tiny {
  padding: 8px 15px;
  font-size: 0.8em;
  border-radius: 5px;
  background-color: var(--page-upcoming-events-secondary-color);
  color: var(--page-upcoming-events-text-light);
}

.page-upcoming-events__btn--tiny:hover {
  background-color: darken(var(--page-upcoming-events-secondary-color), 10%);
}

/* Phần chung cho các section */
.page-upcoming-events__section {
  padding: 60px 0;
  border-bottom: 1px solid var(--page-upcoming-events-border-color);
}

.page-upcoming-events__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-upcoming-events__section-title {
  font-size: 2.5em;
  color: var(--page-upcoming-events-primary-color);
  text-align: center;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.page-upcoming-events__section-subtitle {
  font-size: 1.1em;
  color: rgba(255, 255, 255, 0.8);
  text-align: center;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Giới thiệu chung */
.page-upcoming-events__section--introduction {
  background-color: var(--page-upcoming-events-bg-dark);
}

.page-upcoming-events__content-wrapper {
  display: flex;
  gap: 40px;
  align-items: center;
}

.page-upcoming-events__text-block {
  flex: 1;
  font-size: 1.1em;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.8);
}

.page-upcoming-events__text-block strong {
  color: var(--page-upcoming-events-primary-color);
}

.page-upcoming-events__image-block {
  flex: 1;
  text-align: center;
}

.page-upcoming-events__image {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  display: block; /* Quan trọng cho responsive */
}

/* Grid chung */
.page-upcoming-events__grid {
  display: grid;
  gap: 30px;
}

.page-upcoming-events__grid--2-col {
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
}

.page-upcoming-events__grid--3-col {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Card chung */
.page-upcoming-events__card, .page-upcoming-events__event-card, .page-upcoming-events__promo-card, .page-upcoming-events__news-card {
  background-color: var(--page-upcoming-events-card-bg);
  border: 1px solid var(--page-upcoming-events-border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  color: var(--page-upcoming-events-text-light);
}

.page-upcoming-events__card:hover, .page-upcoming-events__event-card:hover, .page-upcoming-events__promo-card:hover, .page-upcoming-events__news-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.page-upcoming-events__card-image, .page-upcoming-events__event-image, .page-upcoming-events__promo-image, .page-upcoming-events__news-image {
  width: 100%;
  height: 250px; /* Chiều cao cố định cho hình ảnh */
  object-fit: cover;
  display: block;
}

.page-upcoming-events__card-content, .page-upcoming-events__event-content, .page-upcoming-events__promo-content, .page-upcoming-events__news-content {
  padding: 25px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.page-upcoming-events__card-title, .page-upcoming-events__event-title, .page-upcoming-events__promo-title, .page-upcoming-events__news-title {
  font-size: 1.5em;
  color: var(--page-upcoming-events-primary-color);
  margin-bottom: 15px;
}

.page-upcoming-events__card-content p, .page-upcoming-events__event-content p, .page-upcoming-events__promo-content p {
  font-size: 1em;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 20px;
}

/* Lịch trình chi tiết */
.page-upcoming-events__schedule-list {
  display: grid;
  gap: 25px;
}

.page-upcoming-events__schedule-item {
  background-color: var(--page-upcoming-events-card-bg);
  border: 1px solid var(--page-upcoming-events-border-color);
  border-radius: 10px;
  padding: 25px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
  transition: background-color 0.3s ease;
}

.page-upcoming-events__schedule-item:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

.page-upcoming-events__schedule-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

.page-upcoming-events__schedule-title {
  font-size: 1.6em;
  color: var(--page-upcoming-events-primary-color);
  margin: 0;
}

.page-upcoming-events__schedule-date {
  font-size: 1em;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
}

.page-upcoming-events__schedule-body p {
  margin-bottom: 10px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
}

.page-upcoming-events__schedule-body strong {
  color: var(--page-upcoming-events-text-light);
}

.page-upcoming-events__schedule-note {
  text-align: center;
  margin-top: 40px;
  font-style: italic;
  color: rgba(255, 255, 255, 0.6);
}

/* Các sự kiện khác */
.page-upcoming-events__event-meta {
  font-size: 0.95em;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 10px;
}

.page-upcoming-events__event-content .page-upcoming-events__btn {
  margin-top: auto; /* Đẩy nút xuống dưới cùng */
  align-self: flex-start;
}

/* Hướng dẫn tham gia */
.page-upcoming-events__guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  text-align: center;
}

.page-upcoming-events__step-item {
  background-color: var(--page-upcoming-events-card-bg);
  border: 1px solid var(--page-upcoming-events-border-color);
  border-radius: 10px;
  padding: 30px 20px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: background-color 0.3s ease;
}

.page-upcoming-events__step-item:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

.page-upcoming-events__step-icon {
  width: 80px;
  height: 80px;
  object-fit: contain;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 5px rgba(255, 215, 0, 0.3));
}

.page-upcoming-events__step-title {
  font-size: 1.3em;
  color: var(--page-upcoming-events-primary-color);
  margin-bottom: 15px;
}

.page-upcoming-events__step-item p {
  font-size: 0.95em;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
}

.page-upcoming-events__cta-bottom {
  text-align: center;
  margin-top: 50px;
}

/* FAQ */
.page-upcoming-events__faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.page-upcoming-events__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--page-upcoming-events-border-color);
}

.page-upcoming-events__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  background-color: rgba(255, 255, 255, 0.08);
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease;
  color: var(--page-upcoming-events-text-light);
}

.page-upcoming-events__faq-question:hover {
  background-color: rgba(255, 255, 255, 0.12);
}

.page-upcoming-events__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 1.15em;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none; /* Ngăn chặn h3 chặn sự kiện click */
  color: var(--page-upcoming-events-text-light);
}

.page-upcoming-events__faq-toggle {
  font-size: 1.8em;
  font-weight: bold;
  line-height: 1;
  color: var(--page-upcoming-events-primary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* Ngăn chặn icon chặn sự kiện click */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
}

.page-upcoming-events__faq-item.active .page-upcoming-events__faq-toggle {
  color: var(--page-upcoming-events-secondary-color);
  transform: rotate(45deg); /* Để chuyển dấu cộng thành dấu trừ */
}

.page-upcoming-events__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
  padding: 0 25px;
  opacity: 0;
  color: rgba(255, 255, 255, 0.7);
}

.page-upcoming-events__faq-item.active .page-upcoming-events__faq-answer {
  max-height: 2000px !important; /* Đảm bảo đủ lớn để chứa nội dung */
  padding: 20px 25px !important;
  opacity: 1;
  background-color: rgba(255, 255, 255, 0.03);
}

.page-upcoming-events__faq-answer p {
  margin-bottom: 10px;
  line-height: 1.7;
}

/* Tin tức */
.page-upcoming-events__news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-upcoming-events__news-card {
  background-color: var(--page-upcoming-events-card-bg);
  border: 1px solid var(--page-upcoming-events-border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.page-upcoming-events__news-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.page-upcoming-events__news-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.page-upcoming-events__news-content {
  padding: 20px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.page-upcoming-events__news-title {
  font-size: 1.3em;
  margin-bottom: 10px;
}

.page-upcoming-events__news-title a {
  color: var(--page-upcoming-events-primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-upcoming-events__news-title a:hover {
  color: var(--page-upcoming-events-secondary-color);
}

.page-upcoming-events__news-excerpt {
  font-size: 0.95em;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 15px;
}

.page-upcoming-events__news-date {
  font-size: 0.85em;
  color: rgba(255, 255, 255, 0.5);
  margin-top: auto;
}

/* Responsive */
@media (max-width: 1024px) {
  .page-upcoming-events__main-title {
    font-size: 3em;
  }
  .page-upcoming-events__hero-description {
    font-size: 1.2em;
  }
  .page-upcoming-events__section-title {
    font-size: 2em;
  }
  .page-upcoming-events__content-wrapper {
    flex-direction: column;
  }
  .page-upcoming-events__grid--2-col {
    grid-template-columns: 1fr;
  }
  .page-upcoming-events__grid--3-col {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
  .page-upcoming-events__card-image, .page-upcoming-events__event-image, .page-upcoming-events__promo-image, .page-upcoming-events__news-image {
    height: 220px;
  }
}

@media (max-width: 768px) {
  .page-upcoming-events__hero-banner {
    padding: 60px 15px;
  }
  .page-upcoming-events__main-title {
    font-size: 2.2em;
  }
  .page-upcoming-events__hero-description {
    font-size: 1em;
  }
  .page-upcoming-events__hero-actions {
    flex-direction: column;
    gap: 15px;
  }
  .page-upcoming-events__btn {
    width: 100%;
    padding: 12px 20px;
    font-size: 1em;
  }
  .page-upcoming-events__section {
    padding: 40px 0;
  }
  .page-upcoming-events__container {
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-upcoming-events__section-title {
    font-size: 1.8em;
  }
  .page-upcoming-events__section-subtitle {
    font-size: 0.95em;
    margin-bottom: 30px;
  }
  .page-upcoming-events__grid--2-col, .page-upcoming-events__grid--3-col, .page-upcoming-events__news-grid, .page-upcoming-events__guide-steps {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-upcoming-events__card-image, .page-upcoming-events__event-image, .page-upcoming-events__promo-image, .page-upcoming-events__news-image {
    height: 180px;
  }
  .page-upcoming-events__card-content, .page-upcoming-events__event-content, .page-upcoming-events__promo-content, .page-upcoming-events__news-content {
    padding: 20px;
  }
  .page-upcoming-events__card-title, .page-upcoming-events__event-title, .page-upcoming-events__promo-title, .page-upcoming-events__news-title {
    font-size: 1.2em;
  }
  .page-upcoming-events__schedule-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
  }
  .page-upcoming-events__schedule-title {
    font-size: 1.3em;
  }
  .page-upcoming-events__faq-question {
    padding: 15px 20px;
  }
  .page-upcoming-events__faq-question h3 {
    font-size: 1em;
  }
  .page-upcoming-events__faq-toggle {
    font-size: 1.5em;
    width: 25px;
    height: 25px;
  }
  .page-upcoming-events__faq-answer {
    padding: 0 20px;
  }
  .page-upcoming-events__faq-item.active .page-upcoming-events__faq-answer {
    padding: 15px 20px !important;
  }
}

/* Global image responsive styles to prevent overflow */
.page-upcoming-events img {
  max-width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 768px) {
  .page-upcoming-events img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-upcoming-events__section,
  .page-upcoming-events__card,
  .page-upcoming-events__container,
  .page-upcoming-events__hero-banner {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-upcoming-events__hero-banner {
    padding-left: 0;
    padding-right: 0;
  }
}