:root {
  color-scheme: dark;
  --bg: #0f0f1a;
  --bg-gradient: radial-gradient(circle at 15% 20%, rgba(99, 102, 241, 0.08), transparent 50%),
    radial-gradient(circle at 80% 0%, rgba(139, 92, 246, 0.06), transparent 55%);
  --panel: rgba(24, 24, 36, 0.96);
  --border: rgba(99, 102, 241, 0.25);
  --text: #e2e8f0;
  --muted: rgba(203, 213, 225, 0.75);
  --accent: #6366f1;
  --accent-strong: #8b5cf6;
  --accent-glow: rgba(99, 102, 241, 0.4);
  --metallic: #1e1b2e;
  --radius-lg: 12px;
  --radius-sm: 8px;
  --shadow-soft: 0 20px 50px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
  font-family: "Space Grotesk", "Fira Code", sans-serif;
}

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

body {
  background-color: var(--bg);
  background-image: var(--bg-gradient);
  color: var(--text);
  min-height: 100vh;
  padding: clamp(1.5rem, 3vw, 3rem);
  line-height: 1.65;
  position: relative;
  font-family: "Space Grotesk", sans-serif;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(99, 102, 241, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: -2;
  opacity: 0.5;
}

.background-radial {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.12), transparent 65%);
  pointer-events: none;
  z-index: -1;
  filter: blur(120px);
  animation: pulse-glow 10s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.03); }
}

.hero-panel {
  background: var(--panel);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 3.5vw, 3rem);
  box-shadow: var(--shadow-soft), var(--shadow-glow);
  display: flex;
  flex-direction: column;
  gap: 2rem;
  position: relative;
  transition: all 0.3s ease;
}

.hero-panel::before {
  content: "$ portfolio";
  position: absolute;
  top: 1rem;
  left: 1.5rem;
  color: var(--accent);
  font-family: "Fira Code", monospace;
  font-size: 0.85rem;
  opacity: 0.5;
}

.identity {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.avatar-ring {
  width: 140px;
  height: 140px;
  border-radius: 20px;
  padding: 4px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.25);
  border: 1px solid rgba(99, 102, 241, 0.4);
  position: relative;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.avatar-ring:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.3);
}

.avatar-ring img {
  width: 100%;
  height: 100%;
  border-radius: 16px;
  object-fit: cover;
  object-position: center 20%;
  border: 2px solid var(--bg);
}

.eyebrow {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 500;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3rem);
  letter-spacing: -0.02em;
  color: var(--text);
  font-weight: 600;
  margin-top: 0.25rem;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  margin-top: 0.5rem;
  color: var(--text);
  font-weight: 600;
}

.summary {
  color: var(--muted);
  max-width: 65ch;
  margin-top: 0.5rem;
  line-height: 1.7;
}

.cta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.5rem;
}

.cta-hover {
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(99, 102, 241, 0.05);
  color: var(--accent);
  font-weight: 600;
  font-family: "Space Grotesk", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
  position: relative;
  display: inline-block;
  cursor: default;
  transition: all 0.3s ease;
}

.cta-hover:hover {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.status {
  display: inline-flex;
  gap: 0.6rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.95rem;
}

.status span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.6);
  display: inline-flex;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(0.95);
  }
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 0.5rem;
}

.contact-grid a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s ease;
  position: relative;
}

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

.contact-grid a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.contact-grid a:hover::after {
  width: 100%;
}

.label {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

main {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 2rem;
}

.panel {
  background: var(--panel);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 3.5vw, 3rem);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.panel::before {
  content: "$ query";
  position: absolute;
  top: 1rem;
  left: 1.5rem;
  color: var(--accent);
  font-family: "Fira Code", monospace;
  font-size: 0.85rem;
  opacity: 0.4;
}

.section-head {
  margin-bottom: 1.5rem;
}

.section-head h2 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin-top: 0.35rem;
  color: var(--text);
  font-weight: 600;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.timeline-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.75rem;
  background: rgba(30, 30, 45, 0.5);
  display: grid;
  gap: 1.25rem;
  position: relative;
  transition: all 0.3s ease;
}

.timeline-card:hover {
  border-color: var(--accent);
  transform: translateX(4px);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.15);
}

.timeline-card::before {
  content: ">";
  position: absolute;
  left: -0.75rem;
  top: 1.75rem;
  color: var(--accent);
  font-family: "Fira Code", monospace;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.timeline-card:hover::before {
  opacity: 0.6;
}

.timeline-card .period {
  color: var(--muted);
  font-size: 0.9rem;
}

.timeline-card ul {
  margin-top: 0.75rem;
  padding-left: 1.25rem;
  color: var(--muted);
}

.timeline-card li {
  margin-bottom: 0.5rem;
}

.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.stack-tags span {
  border-radius: 5px;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border);
  font-size: 0.85rem;
  background: rgba(24, 24, 36, 0.8);
  color: var(--accent);
  font-family: "Fira Code", monospace;
  font-weight: 500;
  transition: all 0.2s ease;
}

.stack-tags span:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.skill-card {
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
  background: rgba(30, 30, 45, 0.5);
  transition: all 0.3s ease;
  min-height: 120px;
  position: relative;
}

.skill-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
}

.skill-card.active {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.08);
}

.skill-card p {
  margin-top: 0.5rem;
  color: var(--muted);
  line-height: 1.6;
}

.education-grid {
  display: grid;
  gap: 1.5rem;
}

.education-grid article {
  border-left: 2px solid var(--border);
  padding-left: 1.25rem;
  position: relative;
  transition: border-color 0.3s ease;
}

.education-grid article:hover {
  border-color: var(--accent);
}

.education-grid .period {
  color: var(--muted);
  font-size: 0.9rem;
}

.certificate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 1.5rem;
}

.certificate-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: rgba(24, 24, 36, 0.9);
  position: relative;
  transition: all 0.3s ease;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  text-decoration: none;
  display: block;
  color: inherit;
}

.certificate-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
}

.certificate-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.2);
}

.certificate-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
}

.certificate-badge {
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--border);
}

.certificate-issuer {
  font-family: "Fira Code", monospace;
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.certificate-body {
  padding: 2rem;
}

.certificate-card h3 {
  color: var(--text);
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  line-height: 1.4;
}

.certificate-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.certificate-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.meta-label {
  font-family: "Fira Code", monospace;
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.meta-value {
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 500;
}

.meta-value.verified {
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.meta-value.verified::before {
  content: "✓";
  color: var(--accent);
  font-weight: bold;
}

.certificate-footer {
  padding: 1.25rem 2rem;
  border-top: 1px solid var(--border);
  background: rgba(99, 102, 241, 0.03);
}

.verify-link {
  font-family: "Fira Code", monospace;
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: all 0.3s ease;
}

.certificate-card:hover .verify-link {
  color: var(--accent-strong);
  transform: translateX(4px);
}

footer {
  margin-top: 3rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.code-card {
  margin-top: 1.25rem;
  border-radius: var(--radius-sm);
  background: rgba(15, 15, 26, 0.95);
  color: var(--accent);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  overflow: hidden;
  position: relative;
  transition: all 0.3s ease;
  max-width: fit-content;
}

.code-card::before {
  content: "$ cat";
  position: absolute;
  top: 0.75rem;
  left: 1rem;
  color: var(--accent);
  font-family: "Fira Code", monospace;
  opacity: 0.5;
  font-size: 0.8rem;
}

.code-card:hover {
  border-color: var(--accent);
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.2);
}

.code-card pre {
  margin: 0;
  padding: 1.25rem 1.5rem 1.25rem 3rem;
  font-family: "Fira Code", monospace;
  font-size: 0.9rem;
  line-height: 1.8;
  white-space: pre;
  color: var(--muted);
}

.code-card code {
  display: block;
}

@media (max-width: 768px) {
  .certificate-grid {
    grid-template-columns: 1fr;
  }
  
  .certificate-meta {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  body {
    padding: 1rem;
  }

  .identity {
    text-align: center;
    justify-content: center;
  }

  .identity > div {
    text-align: left;
  }
  
  .skill-grid {
    grid-template-columns: 1fr;
  }
}