/* Base tokens */
:root {
  --bg: #ffffff;
  --ink: #0b0f19;
  --muted: #6b7280;
  --card: #f6f7fb;
  --primary: #0f172a;
  --accent: #22c55e;
  --ring: #e5e7eb;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(0, 0, 0, .12);
  --container: clamp(16px, 3.5vw, 40px);
}

body.dark {
  --bg: #0b1220;
  --ink: #e5e7eb;
  --muted: #9aa3b2;
  --card: rgba(255, 255, 255, .06);
  --primary: #60a5fa;
  --accent: #22c55e;
  --ring: rgba(255, 255, 255, .18);
  --shadow: 0 10px 30px rgba(0, 0, 0, .28);
}

* {
  box-sizing: border-box
}

html,
body {
  margin: 0;
  padding: 0
}

body {
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 Inter, system-ui, Segoe UI, Roboto, Arial
}

/* Skip link */
.skip {
  position: absolute;
  left: -9999px;
  top: auto
}

.skip:focus {
  left: var(--container);
  top: 8px;
  background: var(--card);
  border: 1px solid var(--ring);
  padding: 8px 10px;
  border-radius: 10px
}

/* Container & sections */
.container {
  width: min(1140px, 100% - var(--container)*2);
  margin-inline: auto
}

.section {
  padding: clamp(56px, 8vw, 88px) 0
}

.section.alt {
  background: linear-gradient(180deg, var(--card), transparent)
}

.section-title {
  margin: 0 0 18px;
  font-size: clamp(22px, 2.8vw + 8px, 34px);
  letter-spacing: -.01em
}

.lead {
  color: var(--muted);
  max-width: 60ch
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid color-mix(in srgb, var(--ring) 80%, transparent)
}

.nav-wrap {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 12px 0
}

.brand {
  display: inline-grid;
  grid-auto-flow: column;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
  color: var(--ink);
  font-size: 18px
}

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

.logo {
  width: 28px;
  height: 28px
}

/* Nav */
.nav {
  justify-self: center
}

.nav-list {
  display: flex;
  gap: clamp(12px, 2.8vw, 28px);
  list-style: none;
  margin: 0;
  padding: 0
}

.nav-list a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  padding: 10px;
  border-radius: 12px
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--ink);
  background: color-mix(in srgb, var(--ring) 24%, transparent);
  outline: 0
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid transparent;
  padding: 12px 16px;
  border-radius: 18px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: transform .15s ease, filter .15s ease, box-shadow .15s ease
}

.btn:active {
  transform: translateY(1px)
}

.btn.primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .08)
}

body.dark .btn.primary {
  color: #0b1220
}

.btn.primary:hover {
  filter: brightness(.95)
}

.btn.outline {
  background: transparent;
  border-color: var(--ring);
  color: var(--ink)
}

.btn.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--ink)
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: 0;
  padding: 10px;
  border-radius: 14px
}

.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--ink)
}

.hamburger:focus-visible {
  outline: 2px solid var(--accent)
}

/* Mobile nav (<=900px) */
@media (max-width: 900px) {
  .nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 0;
    height: 100dvh;
    background: rgba(0, 0, 0, .5);
    display: none
  }

  .nav.open {
    display: block
  }

  .nav-list {
    position: absolute;
    right: var(--container);
    top: 64px;
    flex-direction: column;
    gap: 8px;
    background: var(--bg);
    border: 1px solid var(--ring);
    border-radius: 14px;
    padding: 10px;
    min-width: 180px;
    box-shadow: var(--shadow)
  }

  .hamburger {
    display: flex
  }
}

/* Hero */
.hero {
  position: relative;
  padding: clamp(44px, 7vw, 72px) 0 56px;
  overflow: hidden
}

.blob {
  position: absolute;
  filter: blur(80px);
  opacity: .18;
  pointer-events: none
}

.blob-a {
  top: -140px;
  right: -100px;
  width: min(40vw, 460px);
  height: min(40vw, 460px);
  background: radial-gradient(closest-side, var(--accent), transparent)
}

.blob-b {
  bottom: -160px;
  left: -80px;
  width: min(36vw, 380px);
  height: min(36vw, 380px);
  background: radial-gradient(closest-side, var(--primary), transparent)
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: clamp(18px, 4vw, 36px);
  align-items: center
}

.hero h1 {
  font-size: clamp(28px, 6vw, 56px);
  line-height: 1.02;
  letter-spacing: -.02em;
  margin: 0 0 14px
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 14px;
  flex-wrap: wrap
}

.avatar img {
  width: min(54vw, 260px);
  height: min(54vw, 260px);
  border-radius: 28px;
  object-fit: cover;
  border: 8px solid color-mix(in srgb, var(--accent) 15%, transparent);
  box-shadow: var(--shadow)
}

/* Cards & layout */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px
}

.card {
  background: var(--card);
  backdrop-filter: saturate(140%) blur(6px);
  border-radius: 20px;
  padding: 22px;
  border: 1px solid var(--ring);
  box-shadow: 0 10px 24px rgba(0, 0, 0, .12)
}

.card .link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700
}

/* About & Skills */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center
}

.numbers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px
}

.numbers .num {
  display: block;
  font-size: clamp(20px, 2.4vw, 32px);
  font-weight: 900
}

.numbers .label {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em
}

.ticks {
  padding-left: 18px
}

.ticks li {
  margin: 6px 0
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px
}

.skill {
  background: var(--card);
  padding: 16px;
  border-radius: 16px;
  border: 1px solid var(--ring)
}

.skill .bar {
  height: 10px;
  background: rgba(0, 0, 0, .08);
  border-radius: 999px;
  margin-top: 10px;
  overflow: hidden
}

body.dark .skill .bar {
  background: rgba(255, 255, 255, .12)
}

.skill .bar i {
  display: block;
  height: 100%;
  width: var(--v);
  background: linear-gradient(90deg, var(--accent), var(--primary))
}

/* Slider */
.slider {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
}

.track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: min(320px, 86%);
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 6px 2px 8px;
  scrollbar-width: none;
}

.track::-webkit-scrollbar {
  display: none;
}

.demo {
  scroll-snap-align: start;
}

.nav {
  border: 1px solid var(--ring);
  background: var(--card);
  color: var(--ink);
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  cursor: pointer;
  flex: 0 0 auto;
}

.nav:hover {
  filter: brightness(.98);
}

.pager {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin-top: 12px;
}

.pager .dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  border: 1px solid var(--ring);
  background: transparent;
}

.pager .dot.active {
  background: var(--accent);
  border-color: var(--accent);
}

/* Demos frame */
.demos .frame-wrap {
  margin-top: 12px;
  border: 1px solid var(--ring);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .2)
}

.demos iframe {
  width: 100%;
  height: 380px;
  border: 0;
  background: #000
}

/* Contact modern */
.contact-modern .contact-head {
  margin-bottom: 18px;
}

.contact-body {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 26px;
  align-items: start;
}

.field {
  position: relative;
}

.field input,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--ring);
  color: var(--ink);
  background: rgba(255, 255, 255, .04);
}

body:not(.dark) .field input,
body:not(.dark) .field textarea {
  background: #fff;
}

.field input:focus,
.field textarea:focus {
  outline: 2px solid var(--accent);
  border-color: var(--accent);
}

.floating label {
  position: absolute;
  left: 14px;
  top: 14px;
  color: var(--muted);
  background: transparent;
  padding: 0 6px;
  border-radius: 8px;
  transform-origin: left top;
  transition: all .15s ease;
  pointer-events: none;
}

.floating input::placeholder,
.floating textarea::placeholder {
  color: transparent;
}

.floating :is(input, textarea):focus+label,
.floating :is(input, textarea):not(:placeholder-shown)+label {
  top: -8px;
  font-size: 12px;
  color: var(--accent);
  background: var(--bg);
}

.whatsapp {
  border-color: #2bd46a !important;
}

.whatsapp:hover {
  box-shadow: 0 6px 16px rgba(43, 212, 106, .25);
}

.contact-card2 {
  background: var(--card);
  border: 1px solid var(--ring);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, .12);
  display: grid;
  gap: 14px;
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.contact-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.contact-list .ico {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--ring);
  color: var(--ink);
}

.contact-list strong {
  display: block;
}

.contact-list .link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

.socials-row {
  display: flex;
  gap: 10px;
}

.chip-ico {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--ring);
  color: var(--ink);
  text-decoration: none;
}

.chip-ico:hover {
  transform: translateY(-1px);
}

/* Toast */
.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 100;
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--ring);
  border-radius: 14px;
  padding: 12px 14px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, .22);
}

/* Footer columns */
.footer2 .footer-cols {
  display: grid;
  grid-template-columns: 1.2fr .8fr .8fr;
  gap: 24px;
  align-items: start;
}

.footer2 h4 {
  margin: 0 0 10px;
  font-size: 16px;
  letter-spacing: .2px;
}

.foot-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.foot-links a {
  color: var(--ink);
  text-decoration: none;
}

.foot-links a:hover {
  text-decoration: underline;
}

.footer-legal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  position: relative;
}

.to-top {
  position: absolute;
  right: 16px;
  bottom: 16px;
  text-decoration: none;
  font-weight: 900;
  background: var(--card);
  border: 1px solid var(--ring);
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--ink)
}

/* Responsiveness */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr
  }
}

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: 1fr
  }

  .about-grid {
    grid-template-columns: 1fr
  }

  .contact-body {
    grid-template-columns: 1fr
  }

  .track {
    grid-auto-columns: 88%
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important
  }
}