/* ==========================================================================
   JACOB IRISH | PROFESSIONAL PORTFOLIO DESIGN SYSTEM
   Theme: Tech Modern Executive (Deep Slate + Forest Emerald & Electric Cyan)
   Designed for high recruiter engagement & responsive visual excellence
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-primary: #07090e;
  --bg-secondary: #0c1017;
  --bg-tertiary: #131a26;
  --bg-card: rgba(16, 23, 37, 0.72);
  --bg-card-hover: rgba(22, 32, 51, 0.85);
  --bg-glass: rgba(13, 19, 33, 0.65);
  
  /* Text & Neutral Hierarchy */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dim: #475569;
  
  /* Accents & Brand Tones (Tailored to Emerald Tie & Tech Intelligence) */
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.25);
  --accent-forest: #059669;
  --accent-cyan: #06b6d4;
  --accent-cyan-glow: rgba(6, 182, 212, 0.22);
  --accent-indigo: #6366f1;
  --accent-indigo-glow: rgba(99, 102, 241, 0.2);
  
  /* Gradients */
  --grad-primary: linear-gradient(135deg, #10b981 0%, #06b6d4 50%, #6366f1 100%);
  --grad-text: linear-gradient(135deg, #f8fafc 30%, #94a3b8 100%);
  --grad-accent-text: linear-gradient(135deg, #34d399 0%, #38bdf8 100%);
  --grad-card-border: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.02) 100%);
  --grad-glow: radial-gradient(circle at 50% 0%, rgba(16, 185, 129, 0.14) 0%, transparent 70%);
  
  /* Borders & Shadows */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(16, 185, 129, 0.45);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 28px -6px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 35px -5px rgba(16, 185, 129, 0.3);
  
  /* Layout & Spacing */
  --container-width: 1200px;
  --header-height: 76px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  /* Transitions */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --trans-fast: 0.2s ease;
  --trans-normal: 0.3s var(--ease-spring);
  --trans-slow: 0.5s var(--ease-spring);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  color-scheme: dark;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(16, 185, 129, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 90% 40%, rgba(6, 182, 212, 0.08), transparent),
    radial-gradient(ellipse 50% 50% at 10% 80%, rgba(99, 102, 241, 0.07), transparent);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

/* Background Subtle Mesh Grid */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
  z-index: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

p {
  color: var(--text-secondary);
}

a {
  color: inherit;
  text-decoration: none;
}

code, pre, .font-mono {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

/* Container */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(7, 9, 14, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: all var(--trans-normal);
}

.nav-header.scrolled {
  background: rgba(7, 9, 14, 0.92);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.brand-avatar-mini {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent-emerald);
}

.brand-text-name {
  color: var(--text-primary);
}

.brand-text-tag {
  color: var(--accent-emerald);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 2px 8px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-full);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--trans-fast);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--grad-primary);
  transition: width var(--trans-normal);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile Nav Toggle */
.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 6px;
}

/* ==========================================================================
   BUTTONS & BADGES
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--trans-normal);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-primary);
  color: #04100c;
  box-shadow: 0 4px 18px rgba(16, 185, 129, 0.35);
  font-weight: 700;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.5);
  filter: brightness(1.08);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-outline-emerald {
  background: rgba(16, 185, 129, 0.08);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}

.btn-outline-emerald:hover {
  background: rgba(16, 185, 129, 0.16);
  border-color: rgba(16, 185, 129, 0.6);
  transform: translateY(-2px);
}

.btn-icon {
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* Status Badge */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  color: #34d399;
  margin-bottom: 20px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  position: relative;
}

.status-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--accent-emerald);
  opacity: 0.5;
  animation: pulse-ring 2s infinite ease-out;
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.6); opacity: 0; }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 70px;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-supertitle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--accent-cyan);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.hero-title {
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.hero-title .gradient-text {
  background: var(--grad-accent-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-role {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-role-badge {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-sm);
  padding: 2px 10px;
  font-size: 0.95rem;
}

.hero-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.hero-social-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

.social-link-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.social-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.social-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--trans-fast);
}

.social-icon-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

/* Hero Portrait Card */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.photo-wrapper {
  position: relative;
  max-width: 380px;
  width: 100%;
}

.photo-card {
  position: relative;
  border-radius: 28px;
  padding: 10px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.8), var(--shadow-glow);
  backdrop-filter: blur(12px);
  overflow: hidden;
}

.photo-img {
  width: 100%;
  height: auto;
  border-radius: 20px;
  display: block;
  object-fit: cover;
  filter: contrast(1.02);
  transition: transform 0.6s var(--ease-spring);
}

.photo-card:hover .photo-img {
  transform: scale(1.025);
}

/* Floating Badges */
.floating-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
  animation: float 4s ease-in-out infinite;
  z-index: 3;
}

.floating-chip-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.floating-chip-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.floating-chip-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.chip-top-left {
  top: 24px;
  left: -28px;
  animation-delay: 0s;
}

.chip-bottom-right {
  bottom: 24px;
  right: -24px;
  animation-delay: 2s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ==========================================================================
   METRICS & IMPACT HIGHLIGHT STRIP
   ========================================================================== */

.metrics-strip {
  padding: 30px 0;
  background: rgba(12, 16, 23, 0.6);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(10px);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 12px 20px;
  border-left: 2px solid rgba(16, 185, 129, 0.4);
}

.metric-value {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--grad-accent-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 4px;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* ==========================================================================
   SECTION COMMON STYLES
   ========================================================================== */

.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-emerald);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   ABOUT & ACADEMIC BACKSTORY
   ========================================================================== */

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: stretch;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.about-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #cbd5e1;
  margin-bottom: 24px;
}

.about-highlight-box {
  background: rgba(16, 185, 129, 0.06);
  border-left: 3px solid var(--accent-emerald);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  margin: 24px 0;
}

.about-highlight-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #34d399;
  margin-bottom: 6px;
}

.about-highlight-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.about-credentials-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.credential-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  backdrop-filter: blur(12px);
  transition: all var(--trans-fast);
}

.credential-item:hover {
  border-color: rgba(16, 185, 129, 0.3);
  transform: translateY(-2px);
}

.credential-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 12px;
}

.credential-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.credential-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.credential-subtitle {
  font-size: 0.88rem;
  color: #38bdf8;
  font-weight: 600;
}

.credential-meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.course-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.course-tag {
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

/* ==========================================================================
   FEATURED PROJECTS
   ========================================================================== */

.projects-filter-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 48px;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.filter-btn.active {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--accent-emerald);
  color: #34d399;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

/* Flagship Project Card (Spans 2 columns or larger) */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--trans-normal);
  display: flex;
  flex-direction: column;
  position: relative;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-lg);
}

.project-card.flagship {
  grid-column: span 2;
  border-color: rgba(16, 185, 129, 0.3);
  background: linear-gradient(160deg, rgba(16, 23, 37, 0.95), rgba(12, 16, 23, 0.98));
}

.project-card.flagship:hover {
  border-color: var(--accent-emerald);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.7), var(--shadow-glow);
}

.flagship-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #34d399;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  z-index: 2;
}

.project-inner {
  padding: 36px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-category {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  margin-bottom: 10px;
}

.project-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.project-summary {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

/* Project Feature List */
.project-features {
  list-style: none;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.project-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  color: #cbd5e1;
}

.feature-bullet {
  color: var(--accent-emerald);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

/* Tech Badges */
.project-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  margin-bottom: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

.tech-pill {
  font-size: 0.78rem;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #93c5fd;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.tech-pill.emerald {
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.25);
  background: rgba(16, 185, 129, 0.08);
}

.project-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.project-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ==========================================================================
   INTERACTIVE DATA ANALYTICS PLAYGROUND / DEMO WIDGET
   ========================================================================== */

.demo-container {
  margin-top: 48px;
  background: linear-gradient(175deg, rgba(16, 23, 37, 0.9), rgba(11, 15, 25, 0.95));
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 40px rgba(6, 182, 212, 0.12);
}

.demo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.demo-title-group h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.demo-title-group p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.demo-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.control-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
}

.select-input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  cursor: pointer;
  outline: none;
}

.select-input:focus {
  border-color: var(--accent-cyan);
}

/* Interactive Charts Canvas Area */
.canvas-wrapper {
  position: relative;
  width: 100%;
  height: 280px;
  margin-bottom: 24px;
}

canvas#analyticsChart {
  width: 100% !important;
  height: 100% !important;
}

.demo-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.demo-stat-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.demo-stat-title {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.demo-stat-val {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
}

.demo-stat-badge {
  font-size: 0.75rem;
  margin-top: 4px;
  color: var(--accent-emerald);
}

/* ==========================================================================
   SKILLS & DOMAIN EXPERTISE MATRIX
   ========================================================================== */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.skill-category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(12px);
  transition: all var(--trans-normal);
}

.skill-category-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-4px);
}

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.skill-cat-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-emerald);
  flex-shrink: 0;
}

.skill-cat-icon.cyan {
  background: rgba(6, 182, 212, 0.1);
  border-color: rgba(6, 182, 212, 0.25);
  color: var(--accent-cyan);
}

.skill-cat-icon.indigo {
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.25);
  color: var(--accent-indigo);
}

.skill-cat-title {
  font-size: 1.18rem;
  font-weight: 700;
}

.skill-cat-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.skill-tags-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: #e2e8f0;
  transition: all var(--trans-fast);
}

.skill-tag:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

.skill-tag.featured {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.3);
  color: #34d399;
}

/* ==========================================================================
   CONTACT & RECRUITER SECTION
   ========================================================================== */

.contact-box {
  background: linear-gradient(145deg, rgba(16, 23, 37, 0.85), rgba(12, 16, 24, 0.95));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 56px;
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
}

.contact-info-col {
  display: flex;
  flex-direction: column;
}

.contact-tag {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-emerald);
  margin-bottom: 12px;
}

.contact-h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.contact-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact-quick-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: auto;
}

.contact-link-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--trans-fast);
}

.contact-link-item:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateX(4px);
}

.contact-link-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-link-text {
  display: flex;
  flex-direction: column;
}

.contact-link-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.contact-link-val {
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 600;
}

/* Copy Email Floating Button */
.copy-btn-inline {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--trans-fast);
}

.copy-btn-inline:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(9, 13, 22, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: all var(--trans-fast);
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--accent-emerald);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

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

/* ==========================================================================
   RESUME & DETAILS MODAL (NATIVE <dialog>)
   ========================================================================== */

dialog.modal-dialog {
  margin: auto;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  background: #0d121c;
  color: var(--text-primary);
  padding: 0;
  max-width: 820px;
  width: 92vw;
  max-height: 90vh;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 50px rgba(16, 185, 129, 0.2);
  outline: none;
}

dialog.modal-dialog::backdrop {
  background: rgba(3, 7, 18, 0.78);
  backdrop-filter: blur(8px);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(16, 23, 37, 0.9);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--trans-fast);
}

.modal-close-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
}

.modal-body {
  padding: 28px;
  overflow-y: auto;
  max-height: calc(90vh - 140px);
}

/* Resume Document Styling */
.resume-doc {
  background: #090e17;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 36px;
}

.resume-header {
  border-bottom: 2px solid rgba(16, 185, 129, 0.3);
  padding-bottom: 20px;
  margin-bottom: 24px;
}

.resume-name {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.resume-tagline {
  font-size: 1rem;
  color: #38bdf8;
  font-weight: 600;
  margin-bottom: 10px;
}

.resume-contact-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.resume-section {
  margin-bottom: 24px;
}

.resume-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-emerald);
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 6px;
}

.resume-entry {
  margin-bottom: 16px;
}

.resume-entry-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.resume-entry-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
}

.resume-entry-date {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.resume-entry-org {
  font-size: 0.88rem;
  color: #94a3b8;
  font-weight: 500;
  margin-bottom: 6px;
}

.resume-entry-bullets {
  list-style: disc;
  padding-left: 20px;
  font-size: 0.9rem;
  color: #cbd5e1;
  line-height: 1.6;
}

.modal-footer {
  padding: 16px 28px;
  border-top: 1px solid var(--border-subtle);
  background: rgba(16, 23, 37, 0.9);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
  padding: 48px 0 32px 0;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.82rem;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-supertitle, .hero-role, .hero-cta-group, .hero-social-row {
    justify-content: center;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

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

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

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

  .project-card.flagship {
    grid-column: span 1;
  }

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

  .contact-box {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

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

  .mobile-menu-btn {
    display: block;
  }

  .nav-header.mobile-open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #0b0f17;
    padding: 24px;
    border-bottom: 1px solid var(--border-subtle);
    gap: 18px;
  }

  .hero-title {
    font-size: 2.4rem;
  }

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

  .floating-chip {
    display: none;
  }

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

  .contact-box {
    padding: 28px;
  }

  .resume-doc {
    padding: 20px;
  }
}

/* ==========================================================================
   RELATIONAL SCHEMA & ERD VISUAL ARTIFACT
   ========================================================================== */
.schema-artifact-card {
  margin: 28px 0;
  background: rgba(9, 13, 22, 0.85);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.4);
}

.schema-artifact-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.schema-artifact-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.schema-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

@media (max-width: 900px) {
  .schema-grid {
    grid-template-columns: 1fr;
  }
}

.schema-table-card {
  background: var(--bg-tertiary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
}

.schema-table-head {
  background: rgba(16, 185, 129, 0.12);
  border-bottom: 1px solid rgba(16, 185, 129, 0.25);
  padding: 8px 12px;
  font-weight: 700;
  color: #34d399;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.schema-table-body {
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.schema-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #cbd5e1;
}

.schema-key-pk {
  color: #fbbf24;
  font-weight: 700;
  font-size: 0.72rem;
  margin-right: 4px;
}

.schema-key-fk {
  color: #38bdf8;
  font-weight: 700;
  font-size: 0.72rem;
  margin-right: 4px;
}

.schema-type {
  color: #64748b;
  font-size: 0.72rem;
}

.schema-rel-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--radius-full);
  color: #38bdf8;
  font-size: 0.75rem;
  font-weight: 600;
}

.schema-artifact-footer {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Print Styles for Resume */
@media print {
  body * {
    visibility: hidden;
  }
  #resumeModal, #resumeModal * {
    visibility: visible;
  }
  #resumeModal {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
    background: white;
    color: black;
    box-shadow: none;
    border: none;
  }
  .modal-header, .modal-footer {
    display: none;
  }
  .resume-doc {
    background: white;
    color: black;
    border: none;
    padding: 0;
  }
  .resume-name, .resume-entry-title, .resume-section-title {
    color: black !important;
  }
}