/* =========================================
   1. Root Variables & Resets
   ========================================= */
:root {
  /* Usage: Preserving Original Pastel Pink Palette */
  --color-primary: #FFD1DC;
  /* Pastel Pink */
  --color-primary-light: #FFF0F5;
  /* Lavender Blush */
  --color-primary-dark: #E5B7C0;
  /* Darker Pink / Rose Gold */
  --color-secondary: #FFF9F0;
  /* Cream / Floral White */
  --color-accent: #FFB7B2;
  /* Melon */

  --color-text: #4A4A4A;
  /* Soft Dark Grey */
  --color-text-light: #7A7A7A;
  /* Light Grey */
  --color-white: #FFFFFF;

  /* Fonts */
  --font-heading: 'Montserrat', sans-serif;
  --font-script: 'Dancing Script', cursive;
  --font-body: 'Open Sans', sans-serif;
  --font-accent: 'Quicksand', sans-serif;

  /* Spacing & Utilities */
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 50px;
  --shadow-sm: 0 5px 15px rgba(255, 182, 193, 0.2);
  --shadow-md: 0 10px 30px rgba(255, 182, 193, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-secondary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

/* =========================================
   2. Layout & Components (BaiTapTin Style)
   ========================================= */

/* Container */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 20px;
  color: var(--color-text);
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 50px;
  font-size: 1.1rem;
  font-family: var(--font-accent);
}

/* Buttons */
.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-accent));
  color: white;
  padding: 12px 30px;
  border-radius: 30px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--font-heading);
  box-shadow: var(--shadow-sm);
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary-dark));
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-primary-dark);
  color: var(--color-primary-dark);
  padding: 12px 30px;
  border-radius: 30px;
  font-weight: 600;
  margin-left: 10px;
  transition: all 0.3s ease;
}

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

/* Navbar */
.navbar {
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  padding: 15px 0;
  backdrop-filter: blur(10px);
}

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

.logo {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
}

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

.nav-links {
  display: flex;
}

.nav-links li {
  margin-left: 30px;
}

.nav-links a {
  color: var(--color-text);
  font-weight: 600;
  padding: 5px 0;
  position: relative;
  transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary-dark);
}

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

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

.contact-link {
  color: var(--color-primary-dark) !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text);
  cursor: pointer;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  padding-top: 80px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero-container {
  display: flex;
  align-items: center;
  gap: 40px;
}

.hero-content {
  flex: 1;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.2;
}

.hero h1 span {
  font-family: var(--font-script);
  color: var(--color-primary-dark);
  display: block;
  font-size: 4rem;
  margin-top: 10px;
}

.hero .subtitle {
  font-size: 1.4rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
  font-weight: 600;
  font-family: var(--font-accent);
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 30px;
  max-width: 90%;
}

.hero-stats {
  display: flex;
  gap: 30px;
  margin: 30px 0;
}

.stat h3 {
  font-size: 2.5rem;
  color: var(--color-primary-dark);
  /* Using Pink instead of Blue */
  margin-bottom: 5px;
  font-family: var(--font-heading);
}

.stat p {
  color: var(--color-text-light);
  font-weight: 600;
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 1000px;
}

.image-placeholder-box {
  width: 100%;
  max-width: 500px;
  aspect-ratio: 4/3;
  background-color: var(--color-primary);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
  font-size: 1.5rem;
  font-family: var(--font-heading);
  font-weight: bold;
  box-shadow: var(--shadow-lg);
  transform: rotateY(-10deg);
  transition: transform 0.5s;
  overflow: hidden;
}

.image-placeholder-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-image:hover .image-placeholder-box {
  transform: rotateY(0deg);
}


/* Intro / Features Section */
.intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.intro-card {
  background: white;
  padding: 40px 30px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s, box-shadow 0.3s;
}

.intro-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-md);
}

.intro-icon {
  font-size: 3rem;
  color: var(--color-primary-dark);
  margin-bottom: 20px;
}

.intro-card h3 {
  font-family: var(--font-heading);
  margin-bottom: 15px;
  color: var(--color-text);
}

/* Members Grid (replaces GroupSection) */
.groups-section {
  background-color: var(--color-primary-light);
}

.members-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 30px;
}

.member-card {
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s;
}

.member-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-md);
}

.member-img-placeholder {
  height: 180px;
  background-color: var(--color-accent);
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
  font-family: var(--font-heading);
  font-size: 1.5rem;
}

.member-info {
  padding: 20px;
  text-align: center;
}

.member-info h4 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin-bottom: 5px;
}

.member-role {
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 10px;
}

/* Gallery Section */
.gallery-section {
  background-color: var(--color-secondary);
}

.gallery-tabs {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
}

.gallery-tab {
  padding: 10px 30px;
  border-radius: 30px;
  background: transparent;
  border: 2px solid var(--color-primary-dark);
  color: var(--color-primary-dark);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}

.gallery-tab.active,
.gallery-tab:hover {
  background: var(--color-primary-dark);
  color: white;
}

.memories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 15px;
}

.memory-placeholder {
  width: 100%;
  aspect-ratio: 1;
  background-color: var(--color-primary);
  border-radius: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
  font-weight: bold;
  transition: transform 0.3s;
  cursor: pointer;
}

.memory-placeholder:hover {
  transform: scale(1.05);
}

/* Video Section */
.video-section {
  text-align: center;
  background: linear-gradient(180deg, var(--color-secondary) 0%, var(--color-primary-light) 100%);
}

.video-wrapper {
  max-width: 800px;
  margin: 0 auto;
  aspect-ratio: 16/9;
  background-color: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  display: flex;
  justify-content: center;
  align-items: center;
}

.video-play-button {
  font-size: 4rem;
  color: white;
  cursor: pointer;
  transition: transform 0.3s;
  margin-bottom: 10px;
}

.video-play-button:hover {
  transform: scale(1.1);
}

.video-placeholder p {
  color: rgba(255, 255, 255, 0.8);
}

/* Tribute Section */
.tribute-section {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-accent));
  color: white;
}

.tribute-content p {
  font-family: var(--font-script);
  font-size: 2rem;
  line-height: 2;
  margin-bottom: 20px;
}

/* Footer (Grid Layout) */
footer {
  background-color: #333;
  color: white;
  padding: 70px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-info h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--color-primary);
}

.footer p {
  color: #ccc;
  margin-bottom: 10px;
}

.footer h4 {
  font-family: var(--font-heading);
  margin-bottom: 20px;
  font-size: 1.2rem;
}

.contact-details i {
  color: var(--color-primary-dark);
  margin-right: 10px;
  width: 20px;
}

.social-icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border-radius: 50%;
  margin-right: 10px;
  transition: all 0.3s;
}

.social-icons a:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  text-align: center;
  color: #999;
}

.footer-bottom .fa-heart {
  color: var(--color-accent);
}

/* Responsive */
@media (max-width: 992px) {
  .hero-container {
    flex-direction: column;
    text-align: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: white;
    padding: 20px 0;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    margin: 10px 0;
    text-align: center;
  }

  .menu-toggle {
    display: block;
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .hero h1 span {
    font-size: 3rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .tribute-content p {
    font-size: 1.5rem;
  }
}

/* =========================================
   Animations (Kept from Previous Step)
   ========================================= */
.fade-in,
.fade-in-up,
.fade-in-scale,
.fade-in-slide-right {
  opacity: 0;
  transition: opacity 1s ease, transform 1s ease;
  will-change: opacity, transform;
}

.fade-in-up {
  transform: translateY(30px);
}

.fade-in-scale {
  transform: scale(0.9);
}

.fade-in-slide-right {
  transform: translateX(-30px);
}

.visible {
  opacity: 1 !important;
  transform: none !important;
}

.delay-1 {
  transition-delay: 0.1s;
}

.delay-2 {
  transition-delay: 0.2s;
}

.delay-3 {
  transition-delay: 0.3s;
}

.delay-4 {
  transition-delay: 0.4s;
}

/* =========================================
   School Page Specific Styles
   ========================================= */

/* Hero Grid (Video + Tribute) */
.school-hero-grid {
  display: flex;
  align-items: center;
  gap: 50px;
  padding: 40px 0;
}

.school-video-col {
  flex: 1;
}

.school-tribute-col {
  flex: 1;
}

.school-tribute-col .tribute-content p {
  font-family: var(--font-script);
  font-size: 1.5rem;
  /* Adjusted size */
  line-height: 1.8;
  margin-bottom: 15px;
  color: var(--color-text);
  text-align: justify;
}

.school-tribute-col .section-title {
  text-align: left;
  margin-bottom: 20px;
  font-size: 2.5rem;
}

.text-left {
  text-align: left !important;
}

/* Events Section (Camp Grid) */
.camp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.camp-item {
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s;
}

.camp-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-md);
}

.camp-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.camp-info {
  padding: 20px;
}

.camp-info h3 {
  font-family: var(--font-heading);
  color: var(--color-text);
  margin-bottom: 10px;
}

.camp-date {
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.camp-desc {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* Responsive for School Grid */
@media (max-width: 992px) {
  .school-hero-grid {
    flex-direction: column;
    text-align: center;
  }

  .school-tribute-col .section-title,
  .school-tribute-col .tribute-content {
    text-align: center !important;
  }
}

/* =========================================
   Member Cards (Tổ 2 Specific)
   ========================================= */
.members-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 30px;
  padding: 20px 0;
}

.member-card {
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
}

.member-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-md);
}

.member-image-wrapper {
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
}

.member-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.member-card:hover .member-image-wrapper img {
  transform: scale(1.1);
}

.member-info {
  padding: 15px;
  text-align: center;
}

.member-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 5px;
  color: var(--color-text);
}

.member-nickname {
  color: var(--color-primary-dark);
  font-size: 0.9rem;
  font-style: italic;
  font-family: var(--font-accent);
}

/* =========================================
   Instagram Style Modal
   ========================================= */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  padding: 20px;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: white;
  width: 100%;
  max-width: 900px;
  height: 80vh;
  /* Fixed height for Instagram feel */
  max-height: 600px;
  display: flex;
  border-radius: 4px;
  /* Instagram is more square usually, but minor radius is nice */
  overflow: hidden;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.modal-overlay.open .modal-content {
  transform: scale(1);
}

/* Modal Layout - Left (Image) */
.modal-gallery {
  flex: 1.5;
  background: black;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.modal-gallery img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Modal Layout - Right (Details) */
.modal-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  border-left: 1px solid #efefef;
  min-width: 300px;
}

.modal-header {
  padding: 15px;
  border-bottom: 1px solid #efefef;
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid #dbdbdb;
}

.modal-username {
  font-weight: 600;
  font-size: 0.95rem;
  color: #262626;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.modal-body {
  flex: 1;
  padding: 15px;
  overflow-y: auto;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 0.95rem;
  line-height: 1.5;
}

.modal-caption {
  margin-bottom: 20px;
}

.modal-tags {
  color: #00376b;
  margin-top: 10px;
  display: block;
}

.modal-actions {
  border-top: 1px solid #efefef;
  padding: 10px 15px;
}

.action-icons {
  display: flex;
  gap: 15px;
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: #262626;
}

.action-icons i:hover {
  color: #8e8e8e;
  cursor: pointer;
}

.like-count {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 5px;
  display: block;
}

.post-time {
  font-size: 0.7rem;
  color: #8e8e8e;
  text-transform: uppercase;
}

.modal-close-btn {
  position: absolute;
  top: 15px;
  right: 15px;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 100;
  background: rgba(0, 0, 0, 0.3);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.modal-close-btn:hover {
  background: rgba(0, 0, 0, 0.6);
}

/* Responsive Modal */
@media (max-width: 768px) {
  .modal-content {
    flex-direction: column;
    height: auto;
    max-height: 90vh;
    overflow-y: auto;
  }

  .modal-gallery {
    height: 300px;
    flex: none;
  }
}

.carousel {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 0 auto 50px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 16/9;
}

.carousel-inner {
  display: flex;
  transition: transform 0.5s ease-in-out;
  height: 100%;
}

.carousel-item {
  min-width: 100%;
  height: 100%;
  position: relative;
}

.carousel-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.2);
  border: none;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  cursor: pointer;
  color: white;
  font-size: 1.2rem;
  transition: all 0.3s;
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
}

.carousel-control:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-primary-dark);
}

.carousel-control.prev {
  left: 20px;
}

.carousel-control.next {
  right: 20px;
}

.carousel-indicators {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.carousel-indicators span {
  width: 12px;
  height: 12px;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s;
}

.carousel-indicators span.active {
  background: white;
  transform: scale(1.2);
}