/* ============================================================
   HIENPHAN.VN — About Page Styles
   ============================================================ */

/* ---------- Active nav ---------- */
.nav-links a.active { color: var(--mauve); font-weight: 600; }

/* ============================================================
   HERO — About
   ============================================================ */
.about-hero {
  padding-top: 80px;
  min-height: 480px;
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  overflow: hidden;
  position: relative;
}
.about-hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.about-hero-orb-1 {
  width: 420px; height: 420px;
  background: rgba(217,215,247,0.35);
  top: -120px; right: -80px;
}
.about-hero-orb-2 {
  width: 280px; height: 280px;
  background: rgba(200,96,42,0.08);
  bottom: -60px; left: 10%;
}
.about-hero-inner {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 3rem;
  align-items: center;
  padding: 3rem 0;
}
.about-hero-text .section-label { margin-bottom: 1rem; }
.about-hero-text h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  line-height: 1.2;
  color: var(--purple-dark);
  margin-bottom: 1.2rem;
}
.about-hero-text h1 span { color: var(--mauve); }
.about-hero-tagline {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 540px;
  margin-bottom: 2rem;
}
.about-hero-stats {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.about-stat-item { display: flex; flex-direction: column; gap: 2px; }
.about-stat-num {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--mauve);
  line-height: 1;
}
.about-stat-label { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; }

/* Hero photo */
.about-hero-photo {
  position: relative;
  display: flex;
  justify-content: center;
}
.about-hero-photo-frame {
  width: 380px;
  height: 460px;
  border-radius: 32px 32px 80px 32px;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(45,27,53,0.18);
  position: relative;
  background: var(--gradient-blush);
}
.about-hero-photo-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.about-hero-photo-badge {
  position: absolute;
  bottom: -16px; left: -16px;
  background: #fff;
  border-radius: 16px;
  padding: 0.75rem 1.1rem;
  box-shadow: var(--shadow-soft);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--purple-dark);
  white-space: nowrap;
}
.about-hero-photo-badge .badge-icon { font-size: 1.4rem; }
.about-hero-photo-badge .badge-num {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--mauve);
  font-weight: 700;
  line-height: 1;
}

/* ============================================================
   BIO — "Hiền Phan là ai?"
   ============================================================ */
.about-bio-section {
  padding: 5rem 0;
  background: #fff;
}
.about-bio-section .section-header {
  margin-bottom: 3rem;
}
.geo-answer-block {
  background: linear-gradient(135deg, var(--blush) 0%, #fff 100%);
  border-left: 4px solid var(--mauve);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 2rem 2.5rem;
  margin-bottom: 2rem;
}
.geo-answer-block h3 {
  font-size: 1.25rem;
  color: var(--purple-dark);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.geo-answer-block h3::before {
  content: 'Q';
  background: var(--mauve);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-sans);
  width: 22px; height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.geo-answer-block p {
  color: var(--text-body);
  line-height: 1.8;
  font-size: 1rem;
}
.geo-answer-block strong { color: var(--purple-dark); }

/* ============================================================
   JOURNEY — Hành trình
   ============================================================ */
.about-journey-section {
  padding: 5rem 0;
  background: var(--gradient-blush);
}
.journey-timeline {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
}
.journey-timeline::before {
  content: '';
  position: absolute;
  left: 44px;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--mauve), var(--lavender-mid));
}
.journey-item {
  display: flex;
  gap: 2rem;
  margin-bottom: 2.5rem;
  position: relative;
}
.journey-year {
  width: 88px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.journey-dot {
  width: 20px; height: 20px;
  background: var(--mauve);
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 3px rgba(200,96,42,0.2);
  z-index: 1;
  flex-shrink: 0;
}
.journey-year-num {
  font-family: var(--font-serif);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--mauve);
  text-align: center;
}
.journey-card {
  flex: 1;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  border: var(--border-blush);
}
.journey-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--purple-dark);
  margin-bottom: 0.4rem;
}
.journey-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================================
   CASE STUDIES
   ============================================================ */
.about-cases-section {
  padding: 5rem 0;
  background: #fff;
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}
.case-card {
  background: var(--gradient-blush);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: var(--border-blush);
  transition: var(--transition);
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.case-card-header {
  background: var(--gradient-dark);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.case-logo {
  width: 48px; height: 48px;
  background: rgba(255,255,255,0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.case-company { color: #fff; }
.case-company strong { display: block; font-size: 0.95rem; }
.case-company span { font-size: 0.78rem; opacity: 0.75; }
.case-body { padding: 1.5rem; }
.case-challenge {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-style: italic;
  border-left: 3px solid var(--lavender-mid);
  padding-left: 0.75rem;
  line-height: 1.6;
}
.case-results { display: flex; flex-direction: column; gap: 0.6rem; }
.case-result-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-body);
}
.case-result-item .result-num {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--mauve);
  min-width: 48px;
}
.case-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(200,96,42,0.1);
  color: var(--mauve);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-top: 1rem;
}

/* ============================================================
   STUDENTS — Học viên
   ============================================================ */
.about-students-section {
  padding: 5rem 0;
  background: var(--gradient-blush);
}
.students-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}
.student-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  border: var(--border-blush);
  transition: var(--transition);
  position: relative;
}
.student-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-soft); }
.student-card::before {
  content: '"';
  position: absolute;
  top: 1rem; right: 1.5rem;
  font-family: var(--font-serif);
  font-size: 4rem;
  color: var(--lavender-mid);
  line-height: 1;
}
.student-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  overflow: hidden;
  margin-bottom: 1rem;
  background: var(--gradient-blush);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  border: 3px solid var(--lavender-mid);
}
.student-avatar img { width: 100%; height: 100%; object-fit: cover; }
.student-quote {
  font-size: 0.9rem;
  color: var(--text-body);
  line-height: 1.75;
  margin-bottom: 1.25rem;
  font-style: italic;
}
.student-name { font-weight: 700; color: var(--purple-dark); font-size: 0.9rem; }
.student-role { font-size: 0.78rem; color: var(--text-muted); }
.student-stars { color: #F8C940; font-size: 0.85rem; margin-bottom: 0.5rem; }

/* ============================================================
   GEO — Q&A Long-tail
   ============================================================ */
.about-geo-section {
  padding: 5rem 0;
  background: #fff;
}
.geo-intro {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.8;
  margin: 1rem 0 3rem;
}
.geo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.geo-qa-card {
  background: #fff;
  border: 1.5px solid rgba(217,215,247,0.6);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: var(--transition);
}
.geo-qa-card:hover {
  border-color: var(--mauve);
  box-shadow: 0 8px 32px rgba(200,96,42,0.08);
}
.geo-qa-card.geo-featured {
  grid-column: span 2;
  background: linear-gradient(135deg, #fff 0%, var(--blush) 100%);
  border-color: var(--mauve);
}
.geo-q {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--purple-dark);
  margin-bottom: 0.6rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}
.geo-q-icon {
  background: var(--mauve);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  font-family: var(--font-sans);
  width: 18px; height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.geo-a {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.75;
  padding-left: 1.5rem;
}
.geo-a strong { color: var(--purple-dark); }

/* Schema-visible entity block */
.entity-block {
  background: var(--gradient-blush);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-bottom: 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.entity-field { display: flex; flex-direction: column; gap: 4px; }
.entity-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--mauve);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.entity-value {
  font-size: 0.9rem;
  color: var(--text-body);
  line-height: 1.6;
}
.entity-value strong { color: var(--purple-dark); }

/* ============================================================
   CTA strip
   ============================================================ */
.about-cta-section {
  background: var(--gradient-dark);
  padding: 4.5rem 0;
  text-align: center;
}
.about-cta-section h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  color: #fff;
  margin-bottom: 1rem;
}
.about-cta-section p {
  color: rgba(255,255,255,0.75);
  line-height: 1.8;
  max-width: 520px;
  margin: 0 auto 2rem;
}
.about-cta-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .about-hero-inner { grid-template-columns: 1fr 340px; }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .about-hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .about-hero-photo { display: none; }
  .about-hero-stats { justify-content: center; }
  .about-hero-tagline { margin-left: auto; margin-right: auto; }
  .entity-block { grid-template-columns: 1fr; }
  .geo-grid { grid-template-columns: 1fr; }
  .geo-qa-card.geo-featured { grid-column: span 1; }
  .cases-grid { grid-template-columns: 1fr; }
  .students-grid { grid-template-columns: 1fr; }
  .journey-timeline::before { left: 40px; }
}

@media (max-width: 600px) {
  .about-hero { min-height: auto; }
  .about-hero-text h1 { font-size: 1.9rem; }
  .about-hero-stats { gap: 1.5rem; }
}