:root {
  --bg: #05070f;
  --surface: rgba(12, 18, 31, 0.92);
  --text: #eef5ff;
  --muted: #8ea3c0;
  --accent: #4fd1ff;
  --accent-2: #9f7cff;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.2);
  --radius: 24px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100%;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top left, rgba(79, 209, 255, 0.12), transparent 28%),
    radial-gradient(circle at bottom right, rgba(159, 124, 255, 0.16), transparent 30%),
    linear-gradient(180deg, #05070f 0%, #03050b 100%);
}

img, svg {
  max-width: 100%;
}

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

button {
  font: inherit;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(5, 7, 15, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.site-nav a {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 0.75rem 1rem;
  border-radius: 14px;
  color: var(--text);
  cursor: pointer;
}

/* Hero */
.hero {
  padding: 4.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.hero-copy {
  max-width: 640px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  margin-bottom: 1rem;
}

h1 {
  margin: 0;
  font-size: clamp(3rem, 5vw, 4.6rem);
  line-height: 0.95;
}

.hero-title {
  margin: 1.25rem 0 1rem;
  font-size: 1.2rem;
  max-width: 42rem;
  color: var(--text);
}

.hero-text {
  margin: 0;
  color: var(--muted);
  max-width: 42rem;
  font-size: 1rem;
  line-height: 1.9;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.5rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #040b13;
  box-shadow: 0 18px 40px rgba(79, 209, 255, 0.24);
}

.btn-secondary {
  background: rgba(79, 209, 255, 0.08);
  color: var(--accent);
  border-color: rgba(79, 209, 255, 0.16);
}

.btn-link {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.hero-panel {
  display: grid;
  place-items: center;
}

.hero-card {
  width: 100%;
  padding: 4rem;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 28, 48, 0.96), rgba(9, 14, 24, 0.96));
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow);
}

.card-label {
  color: var(--accent);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-card h2 {
  margin: 1rem 0 0.75rem;
  font-size: 1.45rem;
}

.hero-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.hero-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.85rem;
}

.hero-list li {
  padding-left: 1.2rem;
  position: relative;
  color: var(--text);
}

.hero-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.profile-photo {
  width: 200px;
  height: 200px;
  object-fit: cover;
  border-radius: 20px;
  border: 2px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
  display: block;
  margin-bottom: 1rem;
}

/* Sections */
.section {
  padding: 3rem 0;
}

.section-header {
  display: grid;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.section-header span {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
}

.section-header h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 2.8rem);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.5rem;
  align-items: start;
}

.about-copy {
  grid-column: 1 / -1;
}

.about-copy p {
  margin: 0 0 1.2rem;
  color: var(--muted);
  line-height: 1.9;
}

.about-card {
  padding: 1.8rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.about-card h3 {
  margin-top: 0;
}

.about-card ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.85rem;
}

.about-card li {
  padding-left: 1.25rem;
  position: relative;
  color: var(--text);
}

.about-card li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* Experience */
.cards-grid {
  display: grid;
  gap: 1.5rem;
}

.experience-card {
  padding: 1.8rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: grid;
  gap: 1.5rem;
}

.card-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.experience-logo {
  width: 78px;
  height: 78px;
  min-width: 78px;
  object-fit: contain;
  display: block;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.card-description {
  color: var(--muted);
  line-height: 1.85;
  margin: 0 0 1.3rem;
}

.card-role {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.task-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.task-list li {
  padding-left: 1.25rem;
  position: relative;
  color: var(--text);
}

.task-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.skill-card {
  padding: 1.8rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.skill-card h3 {
  margin-top: 0;
}

.skill-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.1rem;
}

.skill-badges span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  background: rgba(79, 209, 255, 0.1);
  color: var(--text);
  font-size: 0.88rem;
}

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.cert-card {
  padding: 1.8rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: grid;
  gap: 1rem;
}

.cert-card.current {
  border-color: rgba(79, 209, 255, 0.3);
}

.cert-card.future {
  opacity: 0.92;
}

.cert-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.cert-status {
  color: var(--muted);
  font-size: 0.95rem;
}

.badges-placeholder {
  margin-top: 1.5rem;
  padding: 1.3rem 1.4rem;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  border: 1px dashed rgba(255, 255, 255, 0.08);
}

/* Projects */
.project-highlight {
  margin-bottom: 1.8rem;
}

.project-card {
  padding: 1.8rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.project-card.large {
  padding: 2.3rem;
}

.project-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  align-items: center;
}

.project-tag {
  display: inline-flex;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  background: rgba(79, 209, 255, 0.12);
  color: var(--accent);
  font-size: 0.85rem;
}

.project-status {
  display: inline-flex;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 157, 77, 0.12);
  color: #ff9d4d;
  font-size: 0.85rem;
}

.project-status.done {
  background: rgba(79, 209, 255, 0.12);
  color: var(--accent);
}

.project-description {
  color: var(--muted);
  line-height: 1.85;
}

.project-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.1rem;
}

.project-badges span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  background: rgba(79, 209, 255, 0.1);
  color: var(--text);
  font-size: 0.88rem;
}

.project-link {
  display: inline-flex;
  margin-top: 1.4rem;
  color: var(--accent);
  font-weight: 600;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

/* Roadmap */
.timeline {
  display: grid;
  gap: 1.2rem;
}

.timeline-item {
  padding: 1.7rem;
  border-radius: 24px;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.timeline-year {
  display: inline-flex;
  margin-bottom: 1rem;
  color: var(--accent);
  font-weight: 700;
}

.timeline-item ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.timeline-item li {
  padding-left: 1.2rem;
  position: relative;
  color: var(--muted);
}

.timeline-item li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.contact-card {
  padding: 1.8rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.contact-card h3 {
  margin-top: 0;
}

.contact-card a {
  color: var(--accent);
  word-break: break-all;
}

/* Footer */
.site-footer {
  padding: 2rem 0 3rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 1.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 960px) {
  .hero-grid,
  .about-grid,
  .skills-grid,
  .cert-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3rem;
  }
}

@media (max-width: 720px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
  }

  .site-nav.show {
    display: flex;
  }

  .site-nav a {
    width: 100%;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .hero-buttons {
    flex-direction: column;
  }

  .profile-photo {
    width: 96px;
    height: 96px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}