/* Global reset & typography (comments in English only) */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #050618;
  --bg-alt: #11132a;
  --primary: #00e5ff;
  --primary-soft: rgba(0, 229, 255, 0.12);
  --accent: #ff9f5a;
  --text: #ffffff;
  --muted: #a6a9d4;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --radius-xl: 24px;
  --shadow-soft: 0 24px 80px rgba(0, 0, 0, 0.7);
  --section-max-width: 1120px;
  --transition-fast: 200ms ease-out;
  --transition-med: 320ms ease-out;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #20244a 0, var(--bg) 40%, #02030c 100%);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

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

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

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at -10% 0, rgba(0, 229, 255, 0.12), transparent 55%),
    radial-gradient(circle at 110% 20%, rgba(255, 159, 90, 0.16), transparent 55%);
}

.shell {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 80px;
}

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(120deg, rgba(10, 13, 40, 0.85), rgba(9, 16, 56, 0.9));
  backdrop-filter: blur(22px);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.65);
  position: sticky;
  top: 14px;
  z-index: 20;
}

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

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  background: conic-gradient(from 190deg, #00e5ff, #7af5ff, #ffb27a, #00e5ff);
  position: relative;
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.85);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 2px;
  border-radius: inherit;
  background: radial-gradient(circle at 30% 20%, #ffffff, #7fdfff 26%, #1b1d3f 62%, #050618 100%);
}

.brand-name {
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.86rem;
}

.brand-tagline {
  font-size: 0.75rem;
  color: var(--muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
}

.nav-link {
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--muted);
  border: 1px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  transform: translateY(-1px);
}

.nav-link.primary {
  background: radial-gradient(circle at 0 0, #7af5ff, #00e5ff);
  color: #02030a;
  border-color: rgba(255, 255, 255, 0.16);
  font-weight: 600;
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.7);
}

.nav-link.primary:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 0 36px rgba(0, 229, 255, 0.95);
}

/* Hero */
.hero {
  margin-top: 40px;
  max-width: 820px;
  margin-inline: auto;
}

.eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(8, 11, 38, 0.9);
  backdrop-filter: blur(12px);
  margin-bottom: 14px;
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.8);
}

.hero-title {
  font-size: clamp(2.2rem, 4vw, 3rem);
  line-height: 1.08;
  margin-bottom: 16px;
}

.hero-title span {
  background: linear-gradient(120deg, #00e5ff, #7af5ff, #ffb27a);
  -webkit-background-clip: text;
  color: transparent;
}

.hero-subtitle {
  font-size: 0.98rem;
  color: var(--muted);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 24px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.badge {
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(6, 10, 46, 0.9);
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.badge-dot-ios {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ffffff;
}

.badge-dot-android {
  width: 8px;
  height: 8px;
  border-radius: 3px;
  background: #3ddc84;
}

.badge-dot-ai {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #ffffff, #7af5ff 40%, #00e5ff 70%, #1a1a3a 100%);
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.9);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.btn {
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 0.9rem;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background var(--transition-med), color var(--transition-med), box-shadow var(--transition-med), transform var(--transition-med), border-color var(--transition-med);
  background: none;
  color: var(--text);
}

.btn-primary {
  background: radial-gradient(circle at -10% 0, #7af5ff, #00e5ff);
  color: #02030c;
  font-weight: 600;
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 18px 40px rgba(0, 229, 255, 0.8);
}

.btn-primary:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 26px 60px rgba(0, 229, 255, 1);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(7, 9, 36, 0.8);
  color: var(--muted);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  transform: translateY(-1px);
}

.btn-icon {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.4);
  background: radial-gradient(circle at 30% 20%, #ffffff, #7af5ff 45%, #00e5ff 85%);
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.9);
}

.hero-note {
  font-size: 0.78rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-note-pill {
  width: 32px;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(120deg, rgba(0, 229, 255, 0.4), rgba(255, 159, 90, 0.6));
  opacity: 0.7;
}

.hero-visual {
  position: relative;
  padding: 18px;
}

.device-card {
  position: relative;
  border-radius: 34px;
  padding: 20px 18px;
  background: radial-gradient(circle at 0 0, rgba(0, 229, 255, 0.45), rgba(5, 7, 26, 0.98) 40%, #050618 100%);
  border: 1px solid rgba(122, 245, 255, 0.35);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.device-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.pill-icon {
  width: 56px;
  height: 86px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.pill-left {
  width: 38px;
  height: 78px;
  border-radius: 20px;
  background: radial-gradient(circle at 20% 15%, #ffffff, #7af5ff 35%, #4b6fff 60%, #1a1a3a 100%);
  box-shadow: 0 0 22px rgba(0, 229, 255, 0.8);
}

.pill-right {
  width: 10px;
  height: 70px;
  border-radius: 999px;
  background: linear-gradient(160deg, #7af5ff, #ffb27a);
  box-shadow: 0 0 22px rgba(255, 159, 90, 0.9);
  transform: translateX(-4px) rotate(6deg);
}

.device-title {
  font-size: 0.9rem;
  font-weight: 600;
}

.device-subtitle {
  font-size: 0.76rem;
  color: var(--muted);
}

.device-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.metric-chip {
  border-radius: 14px;
  padding: 8px 10px;
  font-size: 0.7rem;
  background: rgba(6, 10, 46, 0.9);
  border: 1px solid rgba(122, 245, 255, 0.4);
}

.metric-label {
  color: var(--muted);
  margin-bottom: 4px;
}

.metric-value {
  font-weight: 600;
  font-size: 0.84rem;
}

.chart-strip {
  position: relative;
  margin-top: 4px;
  height: 32px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.16), rgba(122, 245, 255, 0.28), rgba(255, 159, 90, 0.32));
  overflow: hidden;
}

.chart-line {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
    120deg,
    rgba(0, 0, 0, 0) 0,
    rgba(0, 0, 0, 0) 40%,
    rgba(0, 0, 0, 0.45) 45%,
    rgba(0, 0, 0, 0) 60%,
    rgba(0, 0, 0, 0) 100%
  );
  mix-blend-mode: soft-light;
  opacity: 0.6;
}

.device-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 0.7rem;
  color: var(--muted);
}

.device-pill {
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(8, 12, 46, 0.8);
  color: #7af5ff;
}

.glow-orbit {
  position: absolute;
  inset: -10%;
  pointer-events: none;
  background:
    radial-gradient(circle at 10% 0, rgba(0, 229, 255, 0.45), transparent 55%),
    radial-gradient(circle at 90% 100%, rgba(255, 159, 90, 0.5), transparent 60%);
  opacity: 0.3;
  mix-blend-mode: screen;
}

.floating-tag {
  position: absolute;
  right: -6px;
  top: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(3, 8, 40, 0.95);
  border: 1px solid rgba(122, 245, 255, 0.7);
  font-size: 0.72rem;
  color: #7af5ff;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.8);
  transform: translateY(-4px);
}

.floating-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #7af5ff;
  box-shadow: 0 0 12px rgba(122, 245, 255, 1);
}

.floating-chip {
  position: absolute;
  left: -4px;
  bottom: -10px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(5, 8, 38, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.22);
  font-size: 0.68rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.8);
}

.floating-chip span {
  color: #ffb27a;
  font-weight: 500;
}

/* Sections */
section {
  margin-top: 60px;
}

.section-header {
  margin-bottom: 22px;
}

.section-eyebrow {
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.section-title {
  font-size: 1.3rem;
  margin-bottom: 6px;
}

.section-caption {
  font-size: 0.86rem;
  color: var(--muted);
  max-width: 540px;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 26px;
}

.about-card {
  padding: 18px 18px 16px;
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, rgba(9, 13, 46, 0.96), rgba(9, 13, 46, 0.4));
  border: 1px solid var(--border-subtle);
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.75);
}

.about-text {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.8;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.skill-pill {
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.8rem;
  color: var(--muted);
  background: rgba(7, 9, 38, 0.9);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.skill-pill strong {
  color: var(--text);
  font-size: 0.82rem;
}

.skill-tag {
  font-size: 0.72rem;
  color: var(--muted);
}

/* Portfolio */
.portfolio-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
}

.project-card {
  border-radius: var(--radius-xl);
  padding: 18px 18px 16px;
  background: linear-gradient(150deg, rgba(10, 13, 46, 0.96), rgba(0, 229, 255, 0.1));
  border: 1px solid rgba(122, 245, 255, 0.5);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.85);
  position: relative;
  overflow: hidden;
}

.project-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.project-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: 22px;
  background: radial-gradient(circle at 20% 15%, #ffffff, #7af5ff 35%, #4b6fff 60%, #1a1a3a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 26px rgba(0, 229, 255, 0.9);
}

.project-title {
  font-size: 1rem;
  margin-bottom: 2px;
}

.project-tagline {
  font-size: 0.8rem;
  color: var(--muted);
}

.project-body {
  font-size: 0.86rem;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 14px;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.meta-chip {
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(7, 10, 40, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 0.74rem;
  color: var(--muted);
}

.project-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.note-badge {
  font-size: 0.72rem;
  color: var(--muted);
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(7, 10, 40, 0.95);
}

.project-side {
  border-radius: var(--radius-xl);
  padding: 18px 18px 16px;
  background: linear-gradient(150deg, rgba(5, 7, 26, 0.98), rgba(255, 159, 90, 0.06));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 18px 52px rgba(0, 0, 0, 0.8);
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.7;
}

.store-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.store-pill {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 0.78rem;
  color: var(--text);
  background: rgba(7, 9, 36, 0.9);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.store-pill span {
  font-size: 0.86rem;
}

.store-dot-ios {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #ffffff;
}

.store-dot-android {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: #3ddc84;
}

/* Contact */
.contact-card {
  border-radius: var(--radius-xl);
  padding: 18px 18px 14px;
  border: 1px solid var(--border-subtle);
  background: radial-gradient(circle at 0 0, rgba(0, 229, 255, 0.24), rgba(9, 11, 44, 0.98) 36%, #040619 100%);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.8);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.86rem;
  color: var(--muted);
}

.contact-card strong {
  color: var(--text);
  font-size: 0.96rem;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Footer */
footer {
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.76rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

footer a {
  color: var(--muted);
}

/* Scroll fade-in */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 420ms ease-out, transform 420ms ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 880px) {
  .shell {
    padding-inline: 16px;
  }

  .site-header {
    padding-inline: 12px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-visual {
    order: -1;
  }

  .about-grid,
  .portfolio-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  section {
    margin-top: 46px;
  }
}

@media (max-width: 520px) {
  .device-card {
    border-radius: 26px;
  }

  .project-card,
  .project-side,
  .about-card,
  .contact-card {
    border-radius: 20px;
  }
}