:root {
  --color-bg: #0b0d17;
  --color-surface: rgba(25, 28, 41, 0.72);
  --color-surface-solid: #191c29;
  --color-text: #f5f7ff;
  --color-muted: rgba(245, 247, 255, 0.64);
  --color-accent: #62f3ad;
  --color-secondary: #5d5df6;
  --color-border: rgba(255, 255, 255, 0.08);
  --shadow-lg: 0 40px 60px -40px rgba(22, 26, 45, 0.7);
  --shadow-sm: 0 12px 30px -18px rgba(22, 26, 45, 0.5);
  --radius: 22px;
  --radius-sm: 14px;
  --transition: all 0.3s ease;
}

.theme-light {
  --color-bg: #f3f5ff;
  --color-surface: rgba(255, 255, 255, 0.85);
  --color-surface-solid: #ffffff;
  --color-text: #141627;
  --color-muted: rgba(20, 22, 39, 0.7);
  --color-accent: #3c82f6;
  --color-secondary: #8d2cff;
  --color-border: rgba(12, 20, 50, 0.08);
  --shadow-lg: 0 40px 60px -40px rgba(12, 20, 50, 0.25);
  --shadow-sm: 0 12px 30px -18px rgba(12, 20, 50, 0.18);
}

* {
  box-sizing: border-box;
}

::selection {
  background: var(--color-accent);
  color: #04060e;
}

body {
  margin: 0;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top right, rgba(98, 243, 173, 0.08), transparent 55%),
    radial-gradient(circle at 20% 20%, rgba(93, 93, 246, 0.12), transparent 40%),
    var(--color-bg);
  color: var(--color-text);
  transition: background 0.6s ease, color 0.6s ease;
}

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

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

p {
  line-height: 1.7;
  margin: 0 0 1.2rem;
  color: var(--color-muted);
}

h1, h2, h3 {
  font-family: "Space Grotesk", "Poppins", sans-serif;
  margin: 0 0 1rem;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.8rem, 5vw, 3.8rem);
  line-height: 1.1;
}

h2 {
  font-size: clamp(2.1rem, 4vw, 2.8rem);
}

h3 {
  font-size: 1.4rem;
}

.container {
  width: min(1180px, 88vw);
  margin: 0 auto;
}

.section {
  padding: 110px 0;
}

.section.muted {
  background: rgba(255, 255, 255, 0.015);
  backdrop-filter: blur(16px);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 64px;
}

.section-heading p {
  margin: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: rgba(11, 13, 23, 0.55);
  border-bottom: 1px solid var(--color-border);
  transition: background 0.4s ease;
}

.theme-light .site-header {
  background: rgba(255, 255, 255, 0.75);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 18px;
}

.brand {
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
}

.brand span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-muted);
  transition: color 0.3s ease;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: transparent;
  border: none;
  padding: 4px;
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

.theme-toggle {
  background: var(--color-surface);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  color: var(--color-text);
  transition: var(--transition);
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.theme-toggle span {
  font-size: 0.95rem;
}

.hero {
  padding: 140px 0 120px;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(98, 243, 173, 0.12), transparent 60%),
    radial-gradient(circle at 80% 20%, rgba(93, 93, 246, 0.2), transparent 55%);
  opacity: 0.9;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 80px;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 18px;
}

.lead {
  font-size: 1.1rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 32px 0 42px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 14px 28px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn.primary {
  background: linear-gradient(120deg, var(--color-accent), var(--color-secondary));
  color: #04060e;
  box-shadow: 0 18px 30px -18px rgba(98, 243, 173, 0.7);
}

.btn.primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 28px 40px -18px rgba(93, 93, 246, 0.4);
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn.secondary:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn.ghost {
  border: 1px solid var(--color-border);
  color: var(--color-text);
  background: transparent;
}

.btn.ghost:hover {
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-3px);
}

.hero-visual {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-card {
  background: rgba(12, 16, 30, 0.65);
  border-radius: var(--radius);
  padding: 42px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(18px);
}

.device-frame {
  width: 220px;
  height: 420px;
  border-radius: 36px;
  border: 2px solid rgba(255, 255, 255, 0.08);
  padding: 14px;
  position: relative;
  margin: 0 auto;
  background: rgba(0, 0, 0, 0.45);
}

.device-screen {
  width: 100%;
  height: 100%;
  border-radius: 26px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(160deg, rgba(98, 243, 173, 0.4), rgba(93, 93, 246, 0.65));
}

.device-screen .glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 40% 30%, rgba(255, 255, 255, 0.4), transparent 60%),
    radial-gradient(circle at 70% 70%, rgba(10, 12, 25, 0.5), transparent 65%);
  animation: glow 6s ease-in-out infinite;
}

@keyframes glow {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(-6px, -10px, 0) scale(1.05);
  }
}

.status-chip {
  margin-top: 28px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(98, 243, 173, 0.15);
  color: var(--color-accent);
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
}

.hero-tags {
  display: flex;
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  flex-wrap: wrap;
}

.hero-tags li {
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.skills-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.skills-chips span {
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.03em;
}

.apps-list {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.app-card {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  align-items: center;
}

.app-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 30px -20px rgba(12, 16, 30, 0.8);
}

.app-icon {
  width: 72px;
  height: 72px;
  border-radius: 22px;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 14px 24px -18px rgba(12, 16, 30, 0.8);
  background: rgba(255, 255, 255, 0.08);
  object-fit: cover;
  display: block;
}

.app-icon.text-only {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(120deg, rgba(93, 93, 246, 0.35), rgba(98, 243, 173, 0.35));
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.app-info h3 {
  margin-bottom: 8px;
}

.app-info p {
  margin-bottom: 12px;
}

.app-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.app-tags {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 18px;
}

.site-footer {
  padding: 80px 0 40px;
  border-top: 1px solid var(--color-border);
  background: rgba(5, 6, 12, 0.7);
}

.theme-light .site-footer {
  background: rgba(255, 255, 255, 0.85);
}

.footer-grid {
  display: grid;
  gap: 36px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 48px;
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.contact-list a {
  color: var(--color-muted);
  font-weight: 500;
}

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

.footer-note {
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
  margin: 0;
}

/* Responsive */

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .hero {
    padding-top: 120px;
  }

}

@media (max-width: 780px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    inset: 100% 0 auto;
    background: rgba(11, 13, 23, 0.96);
    padding: 24px;
    flex-direction: column;
    gap: 20px;
    border-bottom: 1px solid var(--color-border);
    transform-origin: top;
    transform: scaleY(0);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s ease, opacity 0.35s ease;
  }

  .theme-light .nav-links {
    background: rgba(255, 255, 255, 0.95);
  }

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

@media (max-width: 560px) {
  .floating-card {
    padding: 28px;
  }

  .device-frame {
    width: 190px;
    height: 360px;
  }

  .apps-list {
    grid-template-columns: 1fr;
  }

  .app-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .app-icon {
    width: 64px;
    height: 64px;
  }
}