/* ==========================================================================
   Shanmukhi Sai Nandiraju - Portfolio Design System
   Cyber-Luxe Glassmorphism, Fluid Typography, Micro-Interactions
   ========================================================================== */

:root {
  /* Color Tokens */
  --bg-primary: #080b12;
  --bg-secondary: #0f1422;
  --bg-card: rgba(17, 24, 39, 0.65);
  --bg-card-hover: rgba(26, 36, 56, 0.8);
  --bg-glass: rgba(255, 255, 255, 0.035);
  --bg-glass-active: rgba(255, 255, 255, 0.08);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(129, 140, 248, 0.35);
  --border-glow: rgba(192, 132, 252, 0.4);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-cyan: #38bdf8;
  --accent-indigo: #818cf8;
  --accent-purple: #c084fc;
  --accent-pink: #f472b6;
  --accent-emerald: #34d399;

  --gradient-brand: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #38bdf8 100%);
  --gradient-text: linear-gradient(135deg, #ffffff 10%, #cbd5e1 50%, #818cf8 100%);
  --gradient-accent: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  --gradient-card-glow: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(129, 140, 248, 0.12), transparent 45%);

  /* Spacing & Layout */
  --container-max: 1220px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 40px rgba(129, 140, 248, 0.1);
  --shadow-glow: 0 0 30px rgba(129, 140, 248, 0.3);

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  color-scheme: dark;
  overflow-x: clip;
}

.scroll-top-target {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
  visibility: hidden;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Selection */
::selection {
  background: rgba(129, 140, 248, 0.3);
  color: #fff;
}

/* Ambient Background Canvas & Glow Orbs */
.ambient-background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.35;
  animation: floatOrb 22s ease-in-out infinite alternate;
  will-change: transform;
}

.ambient-orb-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #6366f1 0%, transparent 70%);
  top: -120px;
  right: -100px;
}

.ambient-orb-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, #a855f7 0%, transparent 70%);
  top: 40%;
  left: -200px;
  animation-duration: 28s;
  animation-direction: alternate-reverse;
}

.ambient-orb-3 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #0284c7 0%, transparent 70%);
  bottom: -100px;
  right: 10%;
  animation-duration: 25s;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 30%, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, black 40%, transparent 80%);
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 40px) scale(1.1); }
  100% { transform: translate(-40px, 80px) scale(0.95); }
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
}

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

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

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

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* Header & Sticky Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(8, 11, 18, 0.75);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
  background: rgba(8, 11, 18, 0.92);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(129, 140, 248, 0.25), rgba(192, 132, 252, 0.25));
  border: 1px solid var(--border-highlight);
  color: var(--accent-cyan);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1rem;
  box-shadow: 0 0 15px rgba(129, 140, 248, 0.25);
}

.brand-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-dot {
  color: var(--accent-cyan);
  -webkit-text-fill-color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 0.35rem 0;
  transition: color var(--transition-fast);
}

.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(--gradient-accent);
  transition: width var(--transition-base);
  border-radius: var(--radius-full);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  width: 42px;
  height: 42px;
  color: var(--text-primary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.mobile-toggle:hover {
  background: var(--bg-glass);
  border-color: var(--border-highlight);
}

/* Button Component Suite */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #090d16;
  font-weight: 700;
  box-shadow: 0 4px 18px rgba(129, 140, 248, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(129, 140, 248, 0.5);
  color: #05070d;
}

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border-color: var(--border-subtle);
  backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  background: var(--bg-glass-active);
  border-color: var(--border-highlight);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-sm {
  padding: 0.45rem 0.95rem;
  font-size: 0.825rem;
}

.btn-lg {
  padding: 0.85rem 1.85rem;
  font-size: 1rem;
}

.btn-icon {
  width: 18px;
  height: 18px;
  stroke-width: 2;
}

/* Section Shell */
.section {
  padding: 7rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 4rem auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-full);
  background: rgba(129, 140, 248, 0.1);
  border: 1px solid rgba(129, 140, 248, 0.25);
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 3.8vw, 2.75rem);
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  min-height: 94vh;
  padding-top: 8.5rem;
  padding-bottom: 4rem;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 4rem;
}

.hero-badge-wrap {
  margin-bottom: 1.5rem;
}

.hero-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  backdrop-filter: blur(12px);
}

.pulse-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 10px var(--accent-emerald);
  position: relative;
}

.pulse-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid var(--accent-emerald);
  opacity: 0.7;
  animation: pulsePing 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes pulsePing {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.4); opacity: 0; }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 1.4rem;
}

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 580px;
}

.hero-description strong {
  color: var(--text-primary);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.2rem;
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.social-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.95rem;
  border-radius: var(--radius-full);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.social-pill:hover {
  background: var(--bg-glass-active);
  border-color: var(--border-highlight);
  color: var(--text-primary);
  transform: translateY(-2px);
}

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

.avatar-card-container {
  position: relative;
  width: 100%;
  max-width: 420px;
}

.avatar-glow {
  position: absolute;
  inset: -15px;
  background: var(--gradient-brand);
  filter: blur(45px);
  opacity: 0.45;
  border-radius: var(--radius-lg);
  z-index: 0;
  animation: glowPulse 8s ease-in-out infinite alternate;
}

@keyframes glowPulse {
  0% { opacity: 0.35; transform: scale(0.97); }
  100% { opacity: 0.55; transform: scale(1.03); }
}

.avatar-card {
  position: relative;
  z-index: 1;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-lg);
  overflow: visible;
}

.avatar-image-frame {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1 / 1.05;
  background: #0f172a;
}

.avatar-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform var(--transition-slow);
}

.avatar-card:hover .avatar-image-frame img {
  transform: scale(1.03);
}

.avatar-meta {
  padding-top: 1rem;
  text-align: center;
}

.avatar-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.avatar-sub {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

/* Floating Tech Chips */
.floating-chip {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.6rem 1rem;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-primary);
  animation: floatChip 6s ease-in-out infinite alternate;
}

.chip-top-left {
  top: -16px;
  left: -20px;
  animation-delay: 0s;
}

.chip-bottom-right {
  bottom: 50px;
  right: -30px;
  animation-delay: 2s;
}

.chip-bottom-left {
  bottom: 110px;
  left: -35px;
  animation-delay: 4s;
}

.chip-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(129, 140, 248, 0.2);
  color: var(--accent-cyan);
}

@keyframes floatChip {
  0% { transform: translateY(0); }
  100% { transform: translateY(-10px); }
}

/* ==========================================================================
   Metrics & Quick Stats Bar
   ========================================================================== */
.stats-section {
  padding: 2.5rem 0;
  border-block: 1px solid var(--border-subtle);
  background: rgba(15, 20, 34, 0.4);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-card {
  padding: 1.25rem 1.5rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.stat-card:hover {
  background: var(--bg-glass-active);
  border-color: var(--border-highlight);
  transform: translateY(-2px);
}

.stat-number {
  font-size: 2.25rem;
  font-weight: 800;
  font-family: var(--font-heading);
  letter-spacing: -0.03em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 0.35rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================================================
   About Section & Pillars
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
  margin-bottom: 4rem;
}

.about-narrative {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  font-size: 1.05rem;
}

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

.about-narrative strong {
  color: var(--text-primary);
}

.about-callout {
  padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--accent-indigo);
  background: rgba(129, 140, 248, 0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-primary);
}

.about-pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.pillar-card {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.5rem;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.pillar-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
}

.pillar-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(129, 140, 248, 0.15), rgba(192, 132, 252, 0.15));
  border: 1px solid rgba(129, 140, 248, 0.3);
  color: var(--accent-cyan);
}

.pillar-content h3 {
  font-size: 1.15rem;
  margin-bottom: 0.35rem;
}

.pillar-content p {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ==========================================================================
   Experience Section (Timeline)
   ========================================================================== */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-indigo) 50%, transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 3.5rem;
}

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

.timeline-marker {
  position: absolute;
  left: -2rem;
  top: 1.5rem;
  transform: translate(-50%, 0);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #080b12;
  border: 3px solid var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan);
}

.experience-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

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

.exp-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.exp-company-role {
  display: flex;
  flex-direction: column;
}

.exp-role {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

.exp-company-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.35rem;
  font-size: 0.95rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.exp-badge-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.exp-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.exp-bullets li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.exp-bullets li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-indigo);
  font-size: 1.1rem;
  line-height: 1.4;
}

.tech-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  background: rgba(129, 140, 248, 0.08);
  border: 1px solid rgba(129, 140, 248, 0.2);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.tech-tag:hover {
  background: rgba(129, 140, 248, 0.18);
  color: #fff;
  border-color: var(--accent-indigo);
}

/* ==========================================================================
   Projects Section
   ========================================================================== */
.filter-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 3rem;
}

.filter-btn {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.5rem 1.15rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  background: var(--bg-glass-active);
  color: var(--text-primary);
  border-color: var(--border-highlight);
}

.filter-btn.active {
  background: var(--gradient-accent);
  color: #080b12;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(129, 140, 248, 0.35);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(350px, 100%), 1fr));
  gap: 2rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(129, 140, 248, 0.12), transparent 60%);
  pointer-events: none;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-lg);
}

.project-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.project-type-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--accent-cyan);
  letter-spacing: 0.05em;
}

.project-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.project-link-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.project-link-btn:hover {
  background: var(--bg-glass-active);
  border-color: var(--border-highlight);
  color: #fff;
  transform: scale(1.1);
}

.project-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.project-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-highlights {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.project-highlights span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.project-highlights span::before {
  content: '✓';
  color: var(--accent-emerald);
  font-weight: bold;
}

/* ==========================================================================
   Skills Matrix
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr));
  gap: 2rem;
}

.skill-category-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition-base);
}

.skill-category-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.skill-cat-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(129, 140, 248, 0.15);
  color: var(--accent-cyan);
}

.skill-cat-header h3 {
  font-size: 1.15rem;
}

.skill-chips-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.skill-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.skill-chip:hover {
  background: rgba(129, 140, 248, 0.15);
  border-color: var(--accent-indigo);
  transform: translateY(-2px);
}

/* ==========================================================================
   Education & Honors
   ========================================================================== */
.education-card {
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.edu-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.edu-school {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
}

.edu-degree {
  font-size: 1.1rem;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-top: 0.25rem;
}

.edu-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.edu-badge {
  font-family: var(--font-mono);
  font-size: 0.825rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent-cyan);
  font-weight: 600;
}

.coursework-wrap {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.coursework-title {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.coursework-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.course-tag {
  font-size: 0.85rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}


/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-card-wrap {
  max-width: 900px;
  margin: 0 auto;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.8), rgba(30, 27, 75, 0.4));
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 3.5rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.contact-card-wrap::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(129, 140, 248, 0.15), transparent 50%);
  pointer-events: none;
}

.contact-headline {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.contact-sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 2.5rem auto;
}

.contact-buttons-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.email-copy-bar {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.email-copy-bar:hover {
  border-color: var(--accent-cyan);
  background: rgba(0, 0, 0, 0.6);
  transform: translateY(-2px);
}

.copy-icon-btn {
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 0;
  background: #05070c;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

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

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

/* ==========================================================================
   Modern Native Dialogs & Lightbox (per Modern Web Guidance)
   ========================================================================== */
dialog {
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  background: rgba(15, 20, 35, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  color: var(--text-primary);
  padding: 2.5rem;
  max-width: 580px;
  width: 90%;
  margin: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8), 0 0 40px rgba(129, 140, 248, 0.2);
}

dialog::backdrop {
  background-color: rgba(4, 7, 14, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.dialog-title {
  font-size: 1.5rem;
  font-weight: 700;
}

.dialog-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.35rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.dialog-close-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  text-align: left;
}

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

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-indigo);
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.25);
}

/* Lightbox Dialog */
#lightbox-dialog {
  max-width: 900px;
  padding: 1rem;
  background: rgba(10, 14, 26, 0.95);
}

.lightbox-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-img {
  max-height: 75vh;
  width: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.lightbox-caption {
  margin-top: 1rem;
  font-size: 1rem;
  color: var(--text-secondary);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.35rem;
  border-radius: var(--radius-full);
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-highlight);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  transform: translateY(120%);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.toast-icon {
  color: var(--accent-emerald);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
    text-align: center;
  }

  .hero-actions,
  .hero-socials {
    justify-content: center;
  }

  .hero-description {
    margin-inline: auto;
  }

  .avatar-card-container {
    max-width: 360px;
  }

  /* Hide chips — negative offsets overflow when layout is single-column */
  .chip-top-left,
  .chip-bottom-right,
  .chip-bottom-left {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

}

@media (max-width: 768px) {
  .section {
    padding: 5rem 0;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: rgba(8, 11, 18, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 1.25rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-actions .btn-secondary {
    display: none;
  }

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

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

  .contact-card-wrap {
    padding: 2.5rem 1.5rem;
  }

  .timeline {
    padding-left: 1.5rem;
  }
  
  .timeline-marker {
    left: -1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Company Logo Styling in Experience Timeline */
.exp-role-row {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.exp-company-logo {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  object-fit: contain;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 4px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.experience-card:hover .exp-company-logo {
  transform: scale(1.06);
  border-color: var(--border-highlight);
}

/* Multi-role nested timeline for Sancta Maria */
.sub-roles-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 1rem;
}

.sub-role-item {
  border-left: 2px solid rgba(129, 140, 248, 0.3);
  padding-left: 1.25rem;
  margin-left: 0.5rem;
}

.sub-role-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.sub-role-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Featured Recognition & Press Cards */
.press-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.press-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.press-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.press-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-purple);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  display: block;
}

.press-quote {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 1.25rem;
  position: relative;
}

.press-source {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 0.45rem;
}