/* =========================================
   Dr. Johnny Kao — Physician Website
   MSK-Inspired Design System
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ---- CSS Custom Properties ---- */
:root {
  --navy: #330968;
  --navy-dark: #230548;
  --navy-light: #4A1A8A;
  --cyan: #0067AC;
  --cyan-light: #3A8FCA;
  --cyan-pale: #E3F0FA;
  --white: #FFFFFF;
  --gray-50: #F8F9FA;
  --gray-100: #F0F2F4;
  --gray-200: #E2E5E9;
  --gray-300: #C8CDD3;
  --gray-500: #6B7785;
  --gray-700: #3A4550;
  --gray-900: #1A2028;
  --accent-gold: #D4A843;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1240px;
  --sidebar-w: 260px;
  --header-h: 72px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, .10);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, .12);
  --radius: 8px;
  --radius-lg: 12px;

  --transition: .25s cubic-bezier(.4, 0, .2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--gray-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--cyan);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--navy);
}

ul {
  list-style: none;
}

/* ---- Utility ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* =========================================
   HEADER
   ========================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  z-index: 1000;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, .95);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0;
  font-weight: 700;
  font-size: 18px;
  color: var(--navy);
  text-decoration: none;
}

.brand-logo {
  height: 44px;
  width: auto;
  margin-right: 14px;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--navy), var(--cyan));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 18px;
  font-weight: 800;
}

.brand-divider {
  width: 1px;
  height: 36px;
  background: var(--gray-300);
  margin-right: 14px;
}

.brand span {
  color: var(--cyan);
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
  text-transform: uppercase;
  letter-spacing: .5px;
  position: relative;
  padding: 4px 0;
}

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

.nav-links a:hover {
  color: var(--navy);
}

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

.nav-cta {
  background: var(--cyan) !important;
  color: var(--white) !important;
  padding: 10px 20px !important;
  border-radius: 6px;
  font-weight: 600 !important;
  text-transform: none !important;
  letter-spacing: 0 !important;
  transition: background var(--transition), transform var(--transition) !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--navy) !important;
  color: var(--white) !important;
  transform: translateY(-1px);
}

/* mobile menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  position: relative;
}

.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: var(--transition);
  position: absolute;
  left: 4px;
}

.menu-toggle span {
  top: 15px;
}

.menu-toggle span::before {
  content: '';
  top: -7px;
}

.menu-toggle span::after {
  content: '';
  top: 7px;
}

/* =========================================
   HERO
   ========================================= */
.hero {
  margin-top: var(--header-h);
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 40%, var(--navy-light) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(0, 163, 224, .15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 163, 224, .08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 60px;
  padding: 72px 24px 80px;
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-photo {
  flex-shrink: 0;
}

.hero-photo-img {
  width: 260px;
  height: 320px;
  border-radius: var(--radius-lg);
  object-fit: cover;
  border: 4px solid rgba(255, 255, 255, .2);
  box-shadow: 0 12px 40px rgba(0, 0, 0, .3);
  background: linear-gradient(135deg, var(--navy-light), var(--cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, .6);
  font-size: 100px;
}

.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, .6);
  margin-bottom: 16px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, .7);
}

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

.breadcrumb .sep {
  margin: 0 4px;
}

.hero-text h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 8px;
  letter-spacing: -.5px;
}

.hero-text .credentials {
  font-size: 20px;
  font-weight: 300;
  color: var(--cyan-light);
  margin-bottom: 16px;
}

.hero-text .title-role {
  font-size: 16px;
  line-height: 1.6;
  color: rgba(255, 255, 255, .85);
  max-width: 540px;
  margin-bottom: 24px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-tags span {
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .15);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, .9);
  backdrop-filter: blur(8px);
}

/* =========================================
   MAIN LAYOUT (sidebar + content)
   ========================================= */
.page-body {
  display: flex;
  gap: 48px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: flex-start;
  max-height: calc(100vh - var(--header-h) - 48px);
  overflow-y: auto;
}

.sidebar-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gray-500);
  margin-bottom: 16px;
  padding-left: 16px;
}

.sidebar-nav a {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-500);
  border-left: 3px solid transparent;
  transition: all var(--transition);
  border-radius: 0 6px 6px 0;
}

.sidebar-nav a:hover {
  color: var(--navy);
  background: var(--gray-50);
}

.sidebar-nav a.active {
  color: var(--navy);
  font-weight: 600;
  border-left-color: var(--cyan);
  background: var(--cyan-pale);
}

.main-content {
  flex: 1;
  min-width: 0;
}

/* ---- Section styles ---- */
.content-section {
  margin-bottom: 64px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

.content-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--gray-100);
}

.section-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.section-icon.blue {
  background: var(--cyan-pale);
  color: var(--cyan);
}

.section-icon.navy {
  background: rgba(0, 59, 92, .08);
  color: var(--navy);
}

.section-icon.gold {
  background: rgba(212, 168, 67, .1);
  color: var(--accent-gold);
}

.section-header h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--navy);
}

/* ---- About bio ---- */
.bio-text {
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray-700);
}

.bio-text p {
  margin-bottom: 16px;
}

.bio-text strong {
  color: var(--gray-900);
  font-weight: 600;
}

/* ---- Stats row ---- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.stat-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--navy);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-number .accent {
  color: var(--cyan);
}

.stat-label {
  font-size: 13px;
  color: var(--gray-500);
  font-weight: 500;
}

/* ---- Expertise pills ---- */
.expertise-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.expertise-col h3 {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-500);
  margin-bottom: 16px;
}

.expertise-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 15px;
  color: var(--gray-700);
  display: flex;
  align-items: center;
  gap: 8px;
}

.expertise-list li::before {
  content: '›';
  color: var(--cyan);
  font-weight: 700;
  font-size: 18px;
}

/* ---- Research cards ---- */
.research-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.research-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  cursor: pointer;
}

.research-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.research-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-100);
}

.research-card-header h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
  display: flex;
  align-items: center;
  gap: 10px;
}

.research-card-header .card-icon {
  font-size: 22px;
}

.card-toggle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--white);
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--gray-500);
  transition: all var(--transition);
}

.research-card.open .card-toggle {
  transform: rotate(180deg);
  background: var(--cyan);
  color: var(--white);
  border-color: var(--cyan);
}

.research-card-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s cubic-bezier(.4, 0, .2, 1), padding .4s ease;
}

.research-card.open .research-card-body {
  max-height: 2000px;
  padding: 24px;
}

.research-card-body p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray-700);
  margin-bottom: 16px;
}

.key-finding {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: var(--cyan-pale);
  border-radius: var(--radius);
  margin-bottom: 12px;
}

.key-finding-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: var(--cyan);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 12px;
  margin-top: 2px;
}

.key-finding p {
  margin: 0;
  font-size: 14px;
  color: var(--navy);
  font-weight: 500;
}

.pub-tag {
  display: inline-block;
  background: var(--navy);
  color: var(--white);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-right: 6px;
}

/* ---- Clinical Trials ---- */
.trial-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  background: var(--white);
  transition: box-shadow var(--transition);
  position: relative;
  padding-left: 36px;
}

.trial-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, var(--cyan), var(--navy));
  border-radius: 4px 0 0 4px;
}

.trial-card:hover {
  box-shadow: var(--shadow-md);
}

.trial-status {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 8px;
}

.trial-status.completed {
  background: #E6F9EE;
  color: #1A8A4A;
}

.trial-status.active {
  background: #FFF3E0;
  color: #E67E22;
}

.trial-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.trial-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
}

.trial-result {
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--gray-50);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--navy);
  font-weight: 500;
}

/* ---- Education timeline ---- */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--cyan), var(--navy));
}

.timeline-item {
  position: relative;
  margin-bottom: 28px;
}

.timeline-dot {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 24px;
  height: 24px;
  background: var(--white);
  border: 3px solid var(--cyan);
  border-radius: 50%;
  z-index: 1;
}

.timeline-item:first-child .timeline-dot {
  background: var(--cyan);
}

.timeline-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 4px;
}

.timeline-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 2px;
}

.timeline-item p {
  font-size: 14px;
  color: var(--gray-500);
}

/* ---- Publications ---- */
.pub-list {
  margin-bottom: 24px;
}

.pub-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--gray-100);
}

.pub-item:last-child {
  border-bottom: none;
}

.pub-number {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: var(--navy);
  color: var(--white);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  margin-top: 2px;
}

.pub-item h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 1.5;
  margin-bottom: 4px;
}

.pub-item .pub-meta {
  font-size: 13px;
  color: var(--gray-500);
}

.pub-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 14px;
  color: var(--cyan);
  margin-top: 8px;
}

.pub-link:hover {
  color: var(--navy);
}

.pub-link::after {
  content: '→';
  transition: transform var(--transition);
}

.pub-link:hover::after {
  transform: translateX(4px);
}

/* ---- CTA / Appointment ---- */
.cta-box {
  background: linear-gradient(135deg, var(--cyan-pale), rgba(0, 163, 224, .08));
  border: 1px solid rgba(0, 163, 224, .2);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 48px;
}

.cta-box h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}

.cta-box p {
  font-size: 15px;
  color: var(--gray-700);
  margin-bottom: 20px;
}

.cta-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.cta-btn.primary {
  background: var(--cyan);
  color: var(--white);
}

.cta-btn.primary:hover {
  background: var(--navy);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.cta-btn.secondary {
  background: var(--white);
  color: var(--navy);
  border: 2px solid var(--navy);
}

.cta-btn.secondary:hover {
  background: var(--navy);
  color: var(--white);
}

/* ---- Contact section ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.contact-card {
  padding: 24px;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}

.contact-card h3 {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-500);
  margin-bottom: 12px;
}

.contact-card p {
  font-size: 15px;
  color: var(--gray-900);
  line-height: 1.6;
}

.contact-card a {
  font-weight: 600;
}

/* =========================================
   FOOTER
   ========================================= */
.site-footer {
  background: var(--navy-dark);
  color: rgba(255, 255, 255, .7);
  padding: 48px 24px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-inner p {
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 13px;
  color: rgba(255, 255, 255, .6);
}

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

.footer-brand {
  font-weight: 700;
  color: var(--white);
}

.footer-brand span {
  color: var(--cyan-light);
}

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 1024px) {
  .sidebar {
    display: none;
  }

  .page-body {
    padding: 32px 20px 60px;
  }

  .hero-inner {
    gap: 40px;
    padding: 48px 20px 60px;
  }

  .hero-text h1 {
    font-size: 34px;
  }

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .expertise-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--white);
    padding: 16px 24px;
    box-shadow: var(--shadow-md);
    gap: 12px;
  }

  .menu-toggle {
    display: block;
  }

  .hero-inner {
    flex-direction: column;
    text-align: center;
    gap: 32px;
    padding: 36px 20px 48px;
  }

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

  .hero-text h1 {
    font-size: 28px;
  }

  .hero-text .credentials {
    font-size: 17px;
  }

  .hero-text .title-role {
    max-width: 100%;
  }

  .breadcrumb {
    justify-content: center;
  }

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat-number {
    font-size: 28px;
  }

  .cta-row {
    flex-direction: column;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-photo-img {
    width: 180px;
    height: 220px;
    font-size: 64px;
  }

  .hero-text h1 {
    font-size: 24px;
  }

  .stats-row {
    grid-template-columns: 1fr 1fr;
  }

  .section-header h2 {
    font-size: 20px;
  }
}

/* =========================================
   APPOINTMENT MODAL
   ========================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .55);
  backdrop-filter: blur(6px);
  z-index: 5000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s ease, visibility .3s ease;
}

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

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 480px;
  padding: 40px;
  position: relative;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .25);
  transform: translateY(24px) scale(.96);
  transition: transform .35s cubic-bezier(.4, 0, .2, 1);
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border: none;
  background: var(--gray-50);
  border-radius: 50%;
  font-size: 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-500);
  transition: all var(--transition);
}

.modal-close:hover {
  background: var(--gray-200);
  color: var(--gray-900);
}

.modal-header {
  text-align: center;
  margin-bottom: 28px;
}

.modal-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--cyan-pale), rgba(0, 103, 172, .15));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--cyan);
}

.modal-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
}

.modal-header p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.5;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: .5px;
}

.form-group .required {
  color: #E53E3E;
}

.form-group input {
  width: 100%;
  padding: 14px 16px;
  font-size: 15px;
  font-family: 'Inter', sans-serif;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--gray-50);
  color: var(--gray-900);
  transition: border-color var(--transition), box-shadow var(--transition);
  box-sizing: border-box;
}

.form-group input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 103, 172, .12);
  background: var(--white);
}

.form-group input::placeholder {
  color: var(--gray-400);
}

.form-submit {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px;
  font-size: 16px;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, var(--cyan), var(--navy));
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  margin-top: 8px;
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(51, 9, 104, .3);
}

.form-submit:active {
  transform: translateY(0);
}

.modal-success {
  display: none;
  text-align: center;
  padding: 20px 0;
}

.modal-success.show {
  display: block;
}

.success-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, #48BB78, #38A169);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 28px;
  color: white;
  animation: scaleIn .4s cubic-bezier(.4, 0, .2, 1);
}

@keyframes scaleIn {
  0% {
    transform: scale(0);
  }

  60% {
    transform: scale(1.15);
  }

  100% {
    transform: scale(1);
  }
}

.modal-success h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
}

.modal-success p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.5;
}

/* ---- Research Figure ---- */
.research-figure {
  margin: 24px 0;
  text-align: center;
}

.research-figure img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}

.research-figure .figure-caption {
  font-size: 14px;
  color: var(--gray-500);
  margin-top: 8px;
  font-style: italic;
  text-align: justify;
}

.labeled-figure {
  position: relative;
  display: inline-block;
  margin-bottom: 12px;
}

.labeled-figure img {
  display: block;
}

.figure-label {
  position: absolute;
  top: 8px;
  left: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  background: rgba(0, 0, 0, 0.55);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  z-index: 1;
}