:root {
  --bg: #f8fbff;
  --bg-alt: #ffffff;
  --surface: #ffffff;
  --surface-alt: #f0f9ff;
  --accent: #0ea5e9;
  --accent-gradient: linear-gradient(135deg, #0ea5e9 0%, #0284c7 50%, #0369a1 100%);
  --accent-soft: rgba(14, 165, 233, 0.12);
  --text: #0f172a;
  --muted: #64748b;
  --border-subtle: rgba(14, 165, 233, 0.12);
  --border-fine-blur: 1px solid rgba(255, 255, 255, 0.3);
  --blur-soft: backdrop-filter: blur(10px);
  --glass-bg: rgba(255, 255, 255, 0.12);
  --glass-bg-strong: rgba(255, 255, 255, 0.25);
  --glass-blur: backdrop-filter: blur(20px);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --radius-lg: 20px;
  --radius-xl: 9999px;
  --shadow-soft: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 0 1px rgba(14, 165, 233, 0.3);
  --shape-blue: linear-gradient(45deg, #0ea5e9 0%, #3b82f6 50%, #1d4ed8 100%);
  --shape-green: linear-gradient(-45deg, #10b981 0%, #059669 50%, #047857 100%);
  --shape-purple: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 50%, #6d28d9 100%);
  --geo-size-sm: 30px;
  --geo-size-md: 60px;
  --geo-size-lg: 120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: min(1120px, 100% - 2.5rem);
  margin-inline: auto;
  position: relative;
}

.container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: rgba(14, 165, 233, 0.15);
  backdrop-filter: blur(12px);
  transform: rotate(-2deg) scaleX(0.8);
  opacity: 0.6;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--glass-bg-strong);
  backdrop-filter: blur(20px);
  border: var(--border-fine-blur);
  box-shadow: var(--glass-shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.85rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: #000000;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #ffffff;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.logo-text {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #1d1d1f;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.92rem;
}

.nav a {
  position: relative;
  color: var(--muted);
  padding-block: 0.25rem;
}

.nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  border-radius: 999px;
  background: var(--accent);
  backdrop-filter: blur(8px);
  transition: width 0.18s ease-out;
}

.nav a:hover {
  color: var(--text);
}

.nav a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.25rem;
  flex-direction: column;
  gap: 0.25rem;
  cursor: pointer;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
}

.hero {
  padding-block: 5.5rem 4.5rem;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.section {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-block: 4rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.3fr);
  gap: 3.5rem;
  align-items: center;
}

.hero-text {
  max-width: 32rem;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  position: relative;
}

.hero-visual::before,
.hero-visual::after {
  content: '';
  position: absolute;
  background: var(--shape-blue);
  animation: floatGeo 6s ease-in-out infinite;
}

.hero-visual::before {
  width: var(--geo-size-md);
  height: 1px;
  top: 10%;
  left: -20px;
  background: var(--shape-blue);
  backdrop-filter: blur(8px);
  transform: rotate(45deg) translateX(20px);
  animation-delay: 0s;
}

.hero-visual::after {
  width: 1px;
  height: var(--geo-size-sm);
  bottom: 20%;
  right: -10px;
  background: var(--shape-blue);
  backdrop-filter: blur(8px);
  transform: rotate(-30deg) translateY(15px);
  animation-delay: 2s;
}

@keyframes floatGeo {
  0%, 100% { transform: translate(0, 0) rotate(0deg) scale(1); opacity: 0.6; }
  50% { transform: translate(10px, -10px) rotate(180deg) scale(1.1); opacity: 0.3; }
}

.hero-avatar-frame {
  position: relative;
  width: 440px;
  height: 500px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-soft), var(--shadow-glow);
  border-radius: var(--radius-xl);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border: var(--border-fine-blur);
  overflow: visible;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.hero-avatar-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  padding: 1px;
  background: var(--accent-gradient);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  -webkit-mask-composite: xor;
  z-index: 1;
}

.hero-avatar-frame:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 35px 80px -12px rgba(0, 0, 0, 0.35), 0 0 40px rgba(14, 165, 233, 0.4);
}

.hero-avatar-img {
  width: 100%;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  border: 1px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.5), inset 0 0 20px rgba(255, 255, 255, 0.1);
  filter: contrast(1.05) brightness(1.02);
  transition: all 0.4s ease-out;
}

.hero-avatar-frame:hover .hero-avatar-img {
  filter: contrast(1.1) brightness(1.05) saturate(1.05);
}

.hero-visual-orbit {
  position: absolute;
  right: -40px;
  top: 8%;
  width: var(--geo-size-lg);
  height: var(--geo-size-lg);
  border-radius: var(--radius-xl);
  background: conic-gradient(from 0deg, transparent 0deg, var(--shape-purple) 90deg, var(--shape-green) 180deg, var(--shape-blue) 270deg, transparent 360deg);
  border: none;
  opacity: 0.4;
  animation: rotateOrbit 20s linear infinite;
  filter: blur(1px);
}

@keyframes rotateOrbit {
  to { transform: rotate(360deg); }
}

.hero-visual-glow {
  position: absolute;
  inset: auto -60px -40px auto;
  width: 320px;
  height: 260px;
  border-radius: 999px;
  background: radial-gradient(circle at 20% 0%, rgba(56, 189, 248, 0.4), transparent 65%);
  filter: blur(10px);
  opacity: 0.85;
  pointer-events: none;
}

.hero-pill {
  position: absolute;
  left: 0;
  bottom: 6%;
  transform: translateX(-10%);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(148, 163, 184, 0.4);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.22);
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
}

.hero-pill-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: linear-gradient(135deg, #22c55e, #4ade80);
}

.hero-text h1 {
  font-size: clamp(2.6rem, 3.8vw, 3.2rem);
  line-height: 1.1;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  white-space: normal;
}

.hero-title-accent {
  font-weight: 600;
  color: #111827;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  background: rgba(255, 255, 255, 0.9);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
}

.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #22c55e;
}

.subtitle {
  max-width: 32rem;
  color: var(--muted);
  font-size: 0.98rem;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.9rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xl);
  border: var(--border-fine-blur);
  padding: 0.65rem 1.4rem;
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  background: var(--glass-bg-strong);
  color: var(--text);
  box-shadow: var(--glass-shadow), var(--shadow-glow);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 20px 40px -10px rgba(14, 165, 233, 0.4), 0 0 30px rgba(14, 165, 233, 0.6);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
}

.btn-secondary {
  background: #ffffff;
  color: #1d1d1f;
  border: var(--border-fine-blur);
  box-shadow: var(--shadow-glow);
  backdrop-filter: blur(4px);
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: #f5f5f7;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.btn.full-width {
  width: 100%;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.9rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.hero-meta span::before {
  content: '•';
  margin-right: 0.4rem;
  color: rgba(148, 163, 184, 0.7);
}

.hero-meta span:first-child::before {
  content: none;
}

.hero-image {
  display: none;
}

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 2.5rem;
  }

  .hero-visual {
    justify-content: center;
  }

  .hero-avatar-frame {
    width: min(90vw, 400px);
    height: calc(min(90vw, 400px) * 1.05);
    border-radius: 999px;
  }
}

.section {
  padding-block: 3.75rem;
  position: relative;
}

.section::before {
  content: '';
  position: absolute;
  right: 5%;
  top: 10%;
  width: var(--geo-size-sm);
  height: var(--geo-size-sm);
  background: var(--shape-purple);
  clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
  opacity: 0.2;
  animation: floatGeo 8s ease-in-out infinite reverse;
}

.section-alt {
  background: #ffffff;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.4fr);
  gap: 2.5rem;
  align-items: flex-start;
}

h2 {
  font-size: 1.6rem;
  margin-bottom: 0.8rem;
}

h3 {
  font-size: 1.1rem;
  margin-top: 0;
  margin-bottom: 0.3rem;
}

.section p {
  color: var(--muted);
  font-size: 0.95rem;
}

.about-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.85rem;
}

.info-card {
  border-radius: var(--radius-lg);
  border: var(--border-fine-blur);
  background: var(--glass-bg);
  padding: 0.95rem 1.1rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--glass-shadow);
}

.info-card:nth-child(2) {
  background: #f5f5f7;
}

.info-card ul {
  list-style: none;
  padding-left: 0;
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.info-card li + li {
  margin-top: 0.15rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.skills-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  align-items: stretch;
}

.skills-group {
  background: var(--glass-bg-strong);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.3rem 1.3rem;
  border: var(--border-fine-blur);
  box-shadow: var(--glass-shadow), var(--shadow-glow);
  backdrop-filter: blur(24px);
}

.skills-heading {
  font-size: 1rem;
  margin: 0 0 0.8rem;
  color: #1d1d1f;
}

.skills-toggle {
  margin-top: 1rem;
  border-radius: 999px;
  border: var(--border-fine-blur);
  background: #f5f5f7;
  padding: 0.4rem 0.9rem;
  font-size: 0.8rem;
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: background 0.12s ease-out, border-color 0.12s ease-out, color 0.12s ease-out, transform 0.12s ease-out;
  backdrop-filter: blur(6px);
}

.skills-toggle:hover {
  background: #ffffff;
  border-color: var(--accent);
  color: #1d1d1f;
  transform: translateY(-1px);
}

.skill-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 1.2rem;
  border-radius: var(--radius-lg);
  background: var(--glass-bg-strong);
  border: var(--border-fine-blur);
  box-shadow: var(--glass-shadow), var(--shadow-glow);
  min-height: 140px;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  cursor: pointer;
  backdrop-filter: blur(20px);
}





.skill-card.is-collapsed {
  display: none;
}

.skill-card:hover {
  transform: translateY(-8px) scale(1.08);
  box-shadow: 0 35px 80px rgba(0, 0, 0, 0.35), 0 0 40px rgba(14, 165, 233, 0.4);
}

.skill-card:hover .skill-icon {
  transform: scale(1.1);
  box-shadow: 0 0 25px rgba(14, 165, 233, 0.5);
}

.skill-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-xl);
  background: var(--glass-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: var(--shadow-glow);
  transition: all 0.4s ease;
  backdrop-filter: blur(12px);
  flex-shrink: 0;
}

.skill-icon img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.skill-content {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  text-align: center;
  flex: 1;
}

.skill-name {
  font-size: 0.92rem;
  margin: 0;
  font-weight: 600;
}

.skill-meta {
  display: none;
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 1.7rem;
}

.section-subtitle {
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 30rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.project {
  background: var(--glass-bg-strong);
  padding: 1.15rem 1.15rem 1.15rem;
  border-radius: var(--radius-lg);
  border: var(--border-fine-blur);
  backdrop-filter: blur(24px);
  box-shadow: var(--glass-shadow);
}

.project:nth-child(2) {
  background: #f5f5f7;
}

.project h3 {
  margin-bottom: 0.1rem;
}

.project p {
  font-size: 0.9rem;
  color: var(--muted);
}

.project-meta {
  list-style: none;
  padding-left: 0;
  margin: 0.1rem 0 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.project-meta li::before {
  content: '–';
  margin-right: 0.25rem;
  color: rgba(148, 163, 184, 0.9);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.4rem;
}

.project-tags span {
  font-size: 0.78rem;
  padding: 0.26rem 0.7rem;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  color: var(--muted);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.2fr);
  gap: 2.5rem;
  align-items: flex-start;
}

.contact-details {
  list-style: none;
  padding-left: 0;
  margin-top: 1.3rem;
  font-size: 0.92rem;
}

.contact-details li {
  display: flex;
  flex-direction: column;
  margin-bottom: 0.75rem;
}

.contact-details span:first-child {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: rgba(148, 163, 184, 0.9);
  margin-bottom: 0.1rem;
}

.contact-details a {
  color: var(--text);
}

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

.contact-form {
  border-radius: var(--radius-lg);
  border: var(--border-fine-blur);
  background: var(--glass-bg-strong);
  padding: 1.25rem 1.1rem 1.1rem;
  backdrop-filter: blur(24px);
  box-shadow: var(--glass-shadow);
}

.field {
  margin-bottom: 0.75rem;
}

.field label {
  display: block;
  font-size: 0.82rem;
  margin-bottom: 0.3rem;
  color: rgba(209, 213, 219, 0.95);
}

.field input,
.field textarea {
  width: 100%;
  border-radius: 10px;
  border: var(--border-fine-blur);
  background: #f5f5f7;
  padding: 0.55rem 0.65rem;
  font-size: 0.88rem;
  color: var(--text);
  outline: none;
  transition: border-color 0.12s ease-out, box-shadow 0.12s ease-out, background 0.12s ease-out;
  resize: vertical;
  min-height: 0;
  backdrop-filter: blur(4px);
}

.field input::placeholder,
.field textarea::placeholder {
  color: rgba(148, 163, 184, 0.7);
}

.field input:focus,
.field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.4);
}

.field-error {
  min-height: 0.9rem;
  font-size: 0.75rem;
  color: #fecaca;
  margin-top: 0.1rem;
}

.form-status {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  min-height: 0.9rem;
  color: var(--muted);
}

.site-footer {
  border-top: var(--border-fine-blur);
  padding-block: 1.2rem 1.6rem;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  box-shadow: var(--glass-shadow);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.back-to-top {
  color: var(--muted);
}

.back-to-top:hover {
  color: var(--accent);
}

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-image {
    order: -1;
  }

  .two-column,
  .projects-grid,
  .contact-grid,
  .skills-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .projects-grid {
    gap: 1rem;
  }
}

@media (max-width: 720px) {
  .header-inner {
    padding-block: 0.7rem;
  }

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

  .nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    padding: 0.5rem 1.1rem 0.75rem;
    background: rgba(2, 6, 23, 0.98);
    border-bottom: var(--border-fine-blur);
    backdrop-filter: blur(10px);
    transform-origin: top;
    transform: scaleY(0);
    opacity: 0;
    pointer-events: none;
    flex-direction: column;
  }

  .nav a {
    padding-block: 0.25rem;
  }

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

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

  .section {
    padding-block: 3.1rem;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 2.1rem;
  }

  .hero-avatar-img {
    padding-inline: 0.5rem;
  }
}