/* ── DR MIKE TENG - CORPORATE TURNAROUND ── */
/* Color scheme matched to corporateturnaroundcentre.com */

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

:root {
  --navy: #0A2342;
  --navy-mid: #0e2d52;
  --navy-light: #143a66;
  --gold: #C4A662;
  --gold-light: #d4ba82;
  --gold-dim: #9e8550;
  --ivory: #f8f5ef;
  --ivory-warm: #f0ebe0;
  --slate: #94a3b8;
  --white: #ffffff;
  --text-dark: #1e293b;
  --text-body: #475569;
  --serif: 'Cormorant Garamond', Georgia, serif;
  --sans: 'Outfit', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--text-dark);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

a { color: var(--gold); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--gold-light); }

img { max-width: 100%; height: auto; }

/* ── NAVIGATION ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 35, 66, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(196, 166, 98, 0.1);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--white);
  text-decoration: none;
}

.nav-logo span { color: var(--gold); }

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color 0.3s;
  white-space: nowrap;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 5px;
}

.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--white);
  transition: all 0.3s;
  display: block;
}

/* ── PAGE HEADER (for sub-pages) ── */
.page-header {
  background: var(--navy);
  padding: 8rem 2rem 3rem;
  text-align: center;
  position: relative;
}

.page-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.page-header h1 {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.page-header p {
  font-size: 1rem;
  font-weight: 300;
  color: var(--slate);
  max-width: 600px;
  margin: 0 auto;
}

/* ── HERO (landing page) ── */
.hero {
  min-height: 100vh;
  background: var(--navy);
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(196, 166, 98, 0.05) 0%, transparent 70%),
    radial-gradient(ellipse 50% 80% at 20% 80%, rgba(14, 45, 82, 0.8) 0%, transparent 60%);
}

.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(196, 166, 98, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(196, 166, 98, 0.025) 1px, transparent 1px);
  background-size: 80px 80px;
}

.hero-content {
  position: relative; z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem 3rem;
  width: 100%;
}

.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
  opacity: 0; transform: translateY(20px);
  animation: fadeUp 0.8s 0.3s forwards;
}

.hero-title {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 500;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 1rem;
  max-width: 800px;
  opacity: 0; transform: translateY(30px);
  animation: fadeUp 0.8s 0.5s forwards;
}

.hero-title em { font-style: italic; color: var(--gold); }

.hero-subtitle {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--slate);
  max-width: 650px;
  margin-bottom: 0.75rem;
  opacity: 0; transform: translateY(30px);
  animation: fadeUp 0.8s 0.7s forwards;
}

.hero-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  margin-bottom: 2rem;
  opacity: 0; transform: translateY(20px);
  animation: fadeUp 0.8s 0.6s forwards;
}

.hero-languages {
  font-size: 0.8rem;
  color: var(--slate);
  margin-bottom: 2rem;
  opacity: 0; transform: translateY(20px);
  animation: fadeUp 0.8s 0.65s forwards;
}

.hero-languages strong { color: var(--gold-light); }

/* ── SECTION STYLES ── */
.section { padding: 5rem 2rem; }
.section-light { background: var(--white); }
.section-warm { background: var(--ivory); }
.section-dark { background: var(--navy); }

.section-inner { max-width: 1200px; margin: 0 auto; }

.section-eyebrow {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 500;
  color: var(--text-dark);
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.section-dark .section-title { color: var(--white); }

/* ── YOUTUBE EMBED ── */
.video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  max-width: 800px;
  margin: 2rem auto;
  border: 1px solid rgba(196, 166, 98, 0.2);
}

.video-container iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: 0;
}

/* ── NARRATIVE SECTIONS ── */
.narrative {
  max-width: 800px;
  margin: 0 auto;
}

.narrative h3 {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--text-dark);
  margin: 2.5rem 0 1rem;
  line-height: 1.3;
}

.section-dark .narrative h3 { color: var(--gold-light); }

.narrative p {
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.85;
  color: var(--text-body);
  margin-bottom: 1.25rem;
}

.section-dark .narrative p { color: var(--slate); }

.narrative .signature {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(196, 166, 98, 0.3);
  font-size: 0.9rem;
  line-height: 1.8;
}

.narrative .signature strong {
  color: var(--gold);
  display: block;
  font-size: 1.05rem;
}

.section-dark .narrative .signature { color: var(--slate); }

/* ── BOOK COVERS ROW ── */
.book-covers-row {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.book-cover-item {
  width: 160px;
  text-align: center;
}

.book-cover-item .cover-placeholder {
  width: 160px; height: 220px;
  background: linear-gradient(160deg, var(--navy-mid), var(--navy));
  border: 1px solid rgba(196, 166, 98, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  margin-bottom: 0.5rem;
}

.book-cover-item .cover-placeholder .book-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  opacity: 0.4;
}

.book-cover-item .cover-placeholder span {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-dim);
  opacity: 0.6;
}

.book-cover-item p {
  font-size: 0.75rem;
  color: var(--text-body);
  line-height: 1.3;
}

/* ── CONTENT CARDS ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--white);
  border: 1px solid #e8e2d6;
  padding: 2rem;
  transition: box-shadow 0.3s, transform 0.3s;
}

.card:hover {
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
  transform: translateY(-3px);
}

.card h4 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.card p {
  font-size: 0.88rem;
  font-weight: 300;
  line-height: 1.7;
  color: var(--text-body);
}

.card .card-meta {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

.card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 1rem;
}

.card .card-link:hover { color: var(--gold-light); gap: 0.6rem; }

/* ── VIDEO GRID ── */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.video-card {
  background: var(--white);
  border: 1px solid #e8e2d6;
  overflow: hidden;
  transition: box-shadow 0.3s, transform 0.3s;
}

.video-card:hover {
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
  transform: translateY(-3px);
}

.video-card .thumb {
  position: relative;
  padding-bottom: 56.25%;
  background: var(--navy);
  overflow: hidden;
}

.video-card .thumb img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.85;
  transition: opacity 0.3s;
}

.video-card:hover .thumb img { opacity: 1; }

.video-card .thumb .play-btn {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 50px; height: 50px;
  background: rgba(196, 166, 98, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s;
}

.video-card:hover .thumb .play-btn { transform: translate(-50%, -50%) scale(1.1); }

.video-card .thumb .play-btn::after {
  content: '';
  width: 0; height: 0;
  border-left: 14px solid var(--navy);
  border-top: 9px solid transparent;
  border-bottom: 9px solid transparent;
  margin-left: 3px;
}

.video-card .video-info {
  padding: 1.25rem;
}

.video-card .video-info h4 {
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 0.25rem;
}

.video-card .video-info p {
  font-size: 0.75rem;
  color: var(--text-body);
}

/* ── CASE STUDY ── */
.case-study {
  background: var(--white);
  border: 1px solid #e8e2d6;
  padding: 2.5rem;
  margin-bottom: 2rem;
}

.case-study h3 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.case-study h4 {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--gold);
  font-style: italic;
  margin-bottom: 1.25rem;
}

.case-study p {
  font-size: 0.92rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--text-body);
  margin-bottom: 1rem;
}

.case-study .clinical-profile {
  background: var(--ivory);
  padding: 1.5rem;
  margin: 1.5rem 0;
  border-left: 3px solid var(--gold);
}

.case-study .clinical-profile h5 {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

.case-study .clinical-profile p {
  margin-bottom: 0.35rem;
  font-size: 0.88rem;
}

.case-study .clinical-profile strong { color: var(--text-dark); }

.case-study .result {
  background: var(--navy);
  padding: 1.25rem 1.5rem;
  margin-top: 1.5rem;
}

.case-study .result h5 {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.case-study .result p {
  color: var(--slate);
  margin-bottom: 0;
}

/* ── TABLE OF CONTENTS ── */
.toc-list { list-style: none; }

.toc-list > li {
  padding: 1.5rem 0;
  border-bottom: 1px solid #e8e2d6;
}

.toc-list > li:last-child { border-bottom: none; }

.toc-chapter {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.toc-chapter .chapter-num {
  color: var(--gold);
  margin-right: 0.5rem;
}

.toc-subtopics {
  list-style: none;
  padding-left: 1.5rem;
}

.toc-subtopics li {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text-body);
  padding: 0.2rem 0;
  position: relative;
}

.toc-subtopics li::before {
  content: '';
  position: absolute;
  left: -1rem; top: 0.65rem;
  width: 4px; height: 4px;
  background: var(--gold);
  border-radius: 50%;
}

/* ── AUTHOR BIO ── */
.bio-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3rem;
  align-items: start;
}

.bio-photo-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  background: linear-gradient(135deg, var(--ivory-warm), #e8e2d6);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid #e8e2d6;
}

.bio-photo-placeholder span {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-dim);
  opacity: 0.5;
}

.bio-content h3 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.bio-content p {
  font-size: 0.92rem;
  font-weight: 300;
  line-height: 1.85;
  color: var(--text-body);
  margin-bottom: 1rem;
}

.bio-credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.credential-tag {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  border: 1px solid rgba(196, 166, 98, 0.3);
  color: var(--gold);
  background: var(--ivory);
}

/* ── ARTICLE LIST ── */
.article-list { list-style: none; }

.article-list li {
  padding: 1.25rem 0;
  border-bottom: 1px solid #e8e2d6;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.article-list li:last-child { border-bottom: none; }

.article-list .article-title {
  font-size: 0.95rem;
  font-weight: 400;
}

.article-list .article-source {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  white-space: nowrap;
}

/* ── COPYRIGHT FOOTER ── */
.footer {
  background: var(--navy);
  border-top: 1px solid rgba(196, 166, 98, 0.1);
  padding: 3rem 2rem 2rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(196, 166, 98, 0.08);
}

.footer-brand .nav-logo {
  font-size: 1.2rem;
  display: block;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  font-size: 0.82rem;
  font-weight: 300;
  color: var(--slate);
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h5 {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.footer-col a {
  display: block;
  font-size: 0.82rem;
  font-weight: 300;
  color: var(--slate);
  text-decoration: none;
  padding: 0.3rem 0;
  transition: color 0.3s;
}

.footer-col a:hover { color: var(--white); }

.footer-bottom {
  text-align: center;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: rgba(148, 163, 184, 0.5);
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px; left: 0; right: 0;
    background: var(--navy);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid rgba(196, 166, 98, 0.1);
    gap: 1rem;
  }
  .nav-toggle { display: flex; }
  .section { padding: 3.5rem 1.25rem; }
  .hero-content { padding: 5rem 1.25rem 3rem; }
  .card-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .bio-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .book-covers-row { gap: 1rem; }
  .book-cover-item { width: 130px; }
  .book-cover-item .cover-placeholder { width: 130px; height: 180px; }
}