/* ============================================================
   TRÚC XINH – AR, News, Events, About, Membership Pages
   ============================================================ */

/* ── AR Page ── */
.ar-hero {
  background: linear-gradient(135deg, #0a1628 0%, #1a2744 50%, #0d2035 100%);
  min-height: 80vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: var(--space-16) 0;
}
.ar-hero-particles {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(2px 2px at 20% 30%, rgba(255,213,116,0.4) 0%, transparent 100%),
    radial-gradient(2px 2px at 80% 20%, rgba(255,174,171,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 50% 70%, rgba(200,55,74,0.5) 0%, transparent 100%),
    radial-gradient(2px 2px at 10% 80%, rgba(255,213,116,0.2) 0%, transparent 100%);
  animation: float 8s ease-in-out infinite;
}
.ar-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}
.ar-text { color: var(--color-white); }
.ar-eyebrow {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-highlight);
  margin-bottom: var(--space-4);
}
.ar-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: var(--space-5);
  color: var(--color-white);
}
.ar-title-accent { color: var(--color-highlight); }
.ar-desc {
  color: rgba(255,255,255,0.7);
  font-size: var(--text-base);
  line-height: 1.8;
  margin-bottom: var(--space-8);
}
.ar-cta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.btn-ar-start {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  background: linear-gradient(135deg, var(--color-accent) 0%, #e04060 100%);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--text-base);
  text-decoration: none;
  transition: all var(--transition-base);
  box-shadow: 0 8px 32px rgba(200,55,74,0.5);
  animation: pulse-glow 2s ease-in-out infinite;
}
.btn-ar-start:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(200,55,74,0.6);
}

.ar-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.ar-phone-mockup {
  position: relative;
  width: 280px;
}
.ar-phone-frame {
  width: 100%;
  background: linear-gradient(145deg, #1a1a2e, #0d0d1a);
  border-radius: 40px;
  border: 3px solid rgba(255,255,255,0.15);
  padding: 20px 15px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}
.ar-phone-screen {
  background: linear-gradient(135deg, #0a1628, #1a2744);
  border-radius: 28px;
  aspect-ratio: 9/19;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
}
.ar-scan-overlay {
  position: absolute; inset: 16px;
  border: 2px solid rgba(255,213,116,0.5);
  border-radius: 16px;
  animation: pulse-glow 2s ease infinite;
}
.ar-scan-corner {
  position: absolute;
  width: 20px; height: 20px;
  border-color: var(--color-highlight);
  border-style: solid;
  border-width: 0;
}
.ar-scan-corner.tl { top: -1px; left: -1px; border-top-width: 3px; border-left-width: 3px; border-radius: 4px 0 0 0; }
.ar-scan-corner.tr { top: -1px; right: -1px; border-top-width: 3px; border-right-width: 3px; border-radius: 0 4px 0 0; }
.ar-scan-corner.bl { bottom: -1px; left: -1px; border-bottom-width: 3px; border-left-width: 3px; border-radius: 0 0 0 4px; }
.ar-scan-corner.br { bottom: -1px; right: -1px; border-bottom-width: 3px; border-right-width: 3px; border-radius: 0 0 4px 0; }

.ar-scan-line {
  position: absolute; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--color-highlight), transparent);
  animation: ar-scan 2.5s ease-in-out infinite;
}
@keyframes ar-scan {
  0%   { top: 16px; opacity: 1; }
  50%  { top: calc(100% - 16px); opacity: 0.8; }
  100% { top: 16px; opacity: 1; }
}
.ar-phone-text {
  color: rgba(255,255,255,0.7);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-align: center;
  position: relative;
  z-index: 1;
}

/* AR Steps Section */
.ar-steps {
  background: var(--color-bg);
  padding: var(--space-20) 0;
}
.ar-steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-12);
}
.ar-step-card {
  text-align: center;
  padding: var(--space-8) var(--space-5);
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--color-border-light);
  position: relative;
}
.ar-step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.ar-step-num {
  position: absolute; top: -16px; left: 50%; transform: translateX(-50%);
  width: 32px; height: 32px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: var(--text-sm);
}
.ar-step-icon { font-size: 3rem; margin: var(--space-4) 0; }
.ar-step-title {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: var(--space-3);
}
.ar-step-desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.7; }

/* ── News Page ── */
.news-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(360px, 0.9fr);
  gap: var(--space-10);
}
.news-featured {
  cursor: pointer;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}
.news-featured:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); }
.news-featured-img {
  width: 100%; height: 440px;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.5s ease;
}
.news-featured:hover .news-featured-img { transform: scale(1.04); }
.news-featured-body {
  padding: var(--space-6);
  background: var(--color-white);
}
.news-featured-title {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: var(--space-3);
}
.news-featured-excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}
.news-sidebar {}
.news-all-list { display: flex; flex-direction: column; }

/* News Detail */
.news-detail-article { padding: var(--space-12) 0 var(--space-20); }
.news-detail-img {
  width: 100%;
  height: auto;
  max-height: none;
  object-fit: contain;
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-8);
  box-shadow: var(--shadow-lg);
}
.news-detail-content {
  max-width: 720px;
  margin: 0 auto;
}
.news-detail-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, var(--text-4xl));
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: var(--space-4);
}
.news-detail-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 2;
  white-space: pre-line;
}

/* ── Events Page ── */
.events-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}
.event-card-large { min-height: 360px; }
.event-card-small { min-height: 200px; }
.event-card-bottom { min-height: 400px; grid-column: 1 / -1; }

/* ── About Page ── */
.about-page { padding: var(--space-12) 0 var(--space-20); }
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  margin-bottom: var(--space-20);
}
.about-story-img {
  width: 100%;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}
.about-mission {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-bg-dark) 100%);
  border-radius: var(--radius-2xl);
  padding: var(--space-12) var(--space-10);
  color: var(--color-white);
  margin-bottom: var(--space-16);
  position: relative;
  overflow: hidden;
}
.about-mission::before {
  content: '"';
  position: absolute;
  top: -20px; left: 20px;
  font-family: var(--font-serif);
  font-size: 15rem;
  color: rgba(255,255,255,0.04);
  line-height: 1;
}
.about-mission-text {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.5vw, var(--text-2xl));
  line-height: 1.7;
  font-style: italic;
  position: relative;
}
.about-values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.about-value-card {
  text-align: center;
  padding: var(--space-8);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}
.about-value-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.about-value-icon { font-size: 3rem; margin-bottom: var(--space-4); }
.about-value-title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: var(--space-3);
}
.about-value-desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.7; }

/* ── Membership Page ── */
.membership-page { padding: var(--space-12) 0 var(--space-20); }
.membership-hero-text {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-12);
}
.membership-cards-wrap {
  max-width: 680px;
  margin: 0 auto;
}
.membership-bamboo-deco {
  position: absolute;
  opacity: 0.12;
  pointer-events: none;
}

/* Responsive */
@media (max-width: 1024px) {
  .ar-grid { grid-template-columns: 1fr; }
  .ar-visual { display: none; }
  .news-grid { grid-template-columns: 1fr; }
  .ar-steps-grid { grid-template-columns: 1fr 1fr; }
  .about-story { grid-template-columns: 1fr; }
  .about-values-grid { grid-template-columns: 1fr 1fr; }
  .events-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .ar-steps-grid { grid-template-columns: 1fr; }
  .about-values-grid { grid-template-columns: 1fr; }
  .news-featured-img { height: 300px; }
  .news-card {
    flex-direction: column;
    align-items: stretch;
  }
  .news-card-img {
    width: 100%;
    height: 220px;
  }
}