/* styles.css - Premium Warm-Minimal Clinical AI Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Plus+Jakarta+Sans:wght@600;700;800&display=swap');

:root {
  /* 1. Warm-Minimal Canvas & Surfaces */
  --bg: #F8F7F4;                 /* Soft alabaster / warm porcelain canvas */
  --surface: #FFFFFF;            /* Pure crisp white card surface */
  --surface-subtle: #F1EFEA;     /* Warm muted secondary surface */
  --surface-hover: #FCFBF9;
  
  /* 2. High-Contrast Editorial Typography */
  --text-primary: #191C1E;       /* Deep warm carbon / near-black */
  --text-secondary: #596066;     /* Calibrated warm slate gray */
  --text-muted: #848D95;         /* Muted meta labels */
  
  /* 3. Hairline Dividers & Borders */
  --border: #E8E5DE;             /* Warm stone hairline */
  --border-hover: #D5D1C6;
  --border-strong: #C4BFB2;
  
  /* 4. Primary Clinical Accent (Deep Clinical Cyan / Marine) */
  --accent: #0E7490;             /* Authoritative, calm, trustworthy clinical cyan */
  --accent-hover: #155E75;       /* Deep marine hover */
  --accent-light: #EFFBFC;       /* Luminous soft cyan wash */
  --accent-border: #BCECF2;      /* Gentle cyan border */
  
  /* 5. Secondary Warm Accent (Selective Honors & Badges) */
  --warm-accent: #B45309;        /* Warm bronze / academic gold */
  --warm-accent-light: #FFFBEB;  /* Soft golden tint */
  --warm-accent-border: #FDE68A;
  
  /* 6. Active Live Beacon */
  --status-green: #059669;       /* Clinical jade emerald */
  --status-green-light: #ECFDF5;
  
  /* 7. Warm Slate Shadows */
  --shadow-sm: 0 1px 3px rgba(25, 28, 30, 0.04), 0 1px 2px rgba(25, 28, 30, 0.02);
  --shadow-card: 0 2px 8px rgba(25, 28, 30, 0.04), 0 1px 3px rgba(25, 28, 30, 0.02);
  --shadow-hover: 0 12px 24px -4px rgba(14, 116, 144, 0.08), 0 4px 8px -2px rgba(25, 28, 30, 0.03);
  
  /* 8. Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* 9. Font Stacks */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text-primary);
  line-height: 1.62;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease, opacity 0.15s ease;
}

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

/* Layout Containers */
.container {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Hierarchy */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  line-height: 1.25;
  letter-spacing: -0.025em;
}

h1 {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 20px;
}

h2 {
  font-size: 1.85rem;
  font-weight: 700;
  margin-bottom: 16px;
}

h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  max-width: 68ch;
}

.lead-text {
  font-size: 1.18rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 28px;
  max-width: 65ch;
}

.eyebrow {
  display: inline-block;
  font-size: 0.775rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 10px;
}

/* Header & Navigation */
header {
  background-color: rgba(248, 247, 244, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.logo-tag {
  font-size: 0.775rem;
  color: var(--text-muted);
  font-weight: 500;
  padding-left: 10px;
  border-left: 1px solid var(--border);
}

.nav-links {
  display: flex;
  gap: 6px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.925rem;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
  background-color: rgba(0, 0, 0, 0.04);
}

.nav-links a.active {
  color: var(--accent);
  background-color: var(--accent-light);
  font-weight: 600;
}

.nav-cta {
  margin-left: 8px;
  font-size: 0.875rem !important;
  padding: 7px 16px !important;
  background-color: var(--accent) !important;
  color: #FFFFFF !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: 0 1px 3px rgba(14, 116, 144, 0.2);
}

.nav-cta:hover {
  background-color: var(--accent-hover) !important;
  color: #FFFFFF !important;
  box-shadow: 0 4px 12px rgba(14, 116, 144, 0.25);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text-primary);
}

/* Badges & Status Indicators */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 20px;
}

/* Warm Academic Honor Badge */
.scholar-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background-color: var(--warm-accent-light);
  border: 1px solid var(--warm-accent-border);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--warm-accent);
}

/* Live Employment Status Pill */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--status-green);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(5, 150, 105, 0.2);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
  box-shadow: 0 2px 6px rgba(14, 116, 144, 0.2);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(14, 116, 144, 0.28);
}

.btn-outline {
  background-color: var(--surface);
  color: var(--text-primary);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.btn-outline:hover {
  background-color: #FFFFFF;
  border-color: var(--border-strong);
  color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(25, 28, 30, 0.06);
}

.btn-group {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

/* Hero Section */
.hero-section {
  padding: 48px 0 36px 0;
}

.hero-section h1 {
  max-width: 850px;
}

/* Instant-Scan Metrics Strip */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 36px 0 56px 0;
  padding: 22px 24px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.stat-item {
  border-right: 1px solid var(--border);
  padding-right: 16px;
}

.stat-item:last-child {
  border-right: none;
  padding-right: 0;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 2px;
  display: block;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  display: block;
}

/* Card Components */
.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

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

/* 3-Column Pillars Grid */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 28px 0 56px 0;
}

.pillar-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.pillar-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
  border-color: var(--border-hover);
}

.pillar-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.pillar-card p {
  font-size: 0.9rem;
  margin-bottom: 0;
  line-height: 1.55;
}

/* Project Cards Grid */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.project-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
}

.project-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
}

.project-venue {
  font-size: 0.775rem;
  color: var(--text-muted);
}

.project-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

/* Bullet Lists inside cards */
ul.bullet-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 16px 0;
}

ul.bullet-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 0.885rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

ul.bullet-list li:last-child {
  margin-bottom: 0;
}

ul.bullet-list li::before {
  content: '•';
  position: absolute;
  left: 4px;
  color: var(--accent);
  font-weight: bold;
}

ul.bullet-list li strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Tags & Chips */
.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0;
}

.tag {
  background-color: var(--surface-subtle);
  color: var(--text-secondary);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--border);
}

.tag-accent {
  background-color: var(--accent-light);
  color: var(--accent);
  border-color: var(--accent-border);
}

.project-footer {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.project-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.project-link:hover {
  color: var(--accent-hover);
}

/* Timeline Components */
.timeline {
  position: relative;
  margin: 32px 0;
  padding-left: 20px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background-color: var(--border);
}

.timeline-item {
  position: relative;
  margin-bottom: 32px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -20px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent);
  box-shadow: 0 0 0 3px var(--bg);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 2px;
}

.timeline-role {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

.timeline-org {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
}

/* Skills & Certs Matrix */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.skill-box {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.skill-box:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

.skill-box h4 {
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.skill-box p {
  font-size: 0.85rem;
  margin-bottom: 0;
  line-height: 1.5;
}

/* Contact Page Layout */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 36px;
  margin-top: 32px;
}

.contact-card-box {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-card-box:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

.contact-card-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.contact-card-val {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.copy-btn {
  background: var(--surface-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.15s ease;
}

.copy-btn:hover {
  background-color: var(--accent-light);
  color: var(--accent);
  border-color: var(--accent-border);
}

/* Forms */
.form-box {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.form-group {
  margin-bottom: 18px;
}

label {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-primary);
  margin-bottom: 6px;
  display: block;
}

input, textarea {
  width: 100%;
  padding: 12px 14px;
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.form-status {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.885rem;
  font-weight: 500;
  margin-top: 16px;
  line-height: 1.5;
  transition: all 0.2s ease;
}

.form-status.success {
  background-color: var(--status-green-light);
  color: var(--status-green);
  border: 1px solid rgba(5, 150, 105, 0.3);
}

.form-status.error {
  background-color: #FEF2F2;
  color: #DC2626;
  border: 1px solid #FECACA;
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* Page Spacing */
main {
  padding: 48px 0 80px 0;
  min-height: calc(100vh - 180px);
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  background-color: var(--surface);
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

/* Mobile & Responsive */
@media (max-width: 860px) {
  .project-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  
  .stat-item {
    border-right: none;
  }
  
  .stat-item:nth-child(1),
  .stat-item:nth-child(2) {
    border-bottom: 1px solid var(--border);
    padding-bottom: 14px;
  }
  
  .pillars-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2.15rem; }
  h2 { font-size: 1.55rem; }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: rgba(248, 247, 244, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    gap: 4px;
  }
  
  .nav-links.show {
    display: flex;
  }
  
  .nav-links a {
    padding: 10px 14px;
    font-size: 1rem;
  }
  
  .nav-cta {
    margin-left: 0;
    margin-top: 6px;
    text-align: center;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    padding: 16px 20px;
  }
  
  .stat-item {
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
    margin-bottom: 12px;
  }
  
  .stat-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
  }
  
  .logo-tag {
    display: none;
  }
}