/* =========================================================
   Ricardo Bessoni — Portfolio
   Accent palette (set --ac): #3b82f6 blue · #2f8f6f green
   · #d8602f terracotta (default) · #c8a04a gold
   ========================================================= */
:root { --ac: #d8602f; }

html { scroll-behavior: smooth; }
* { box-sizing: border-box; }
body {
  margin: 0;
  background: #0c1016;
  color: #e6edf3;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
::selection { background: rgba(59,130,246,.3); }

/* Scroll-reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .85s cubic-bezier(.22,.61,.36,1), transform .85s cubic-bezier(.22,.61,.36,1);
}
[data-reveal].rv-in { opacity: 1; transform: none; }

@keyframes rbpulse { 0%,100% { opacity: 1; } 50% { opacity: .25; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { transition: none; }
  .status-dot { animation: none; }
}

/* ===================== Header ===================== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  height: 64px;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  background: rgba(13,17,23,.72);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.header-inner {
  max-width: 1280px; margin: 0 auto; height: 100%;
  padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: #e6edf3; }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px;
  border: 1px solid var(--ac); color: var(--ac);
  font: 600 13px/1 'IBM Plex Mono', monospace;
}
.brand-name { font: 600 15px/1 'Space Grotesk', sans-serif; letter-spacing: .01em; }

.nav { display: flex; align-items: center; gap: 32px; }
.nav-link {
  font: 500 13px/1 'IBM Plex Mono', monospace;
  letter-spacing: .05em; text-transform: uppercase;
  color: #9aa4b0; text-decoration: none;
  transition: color .25s;
}
.nav-link:hover { color: #e6edf3; }

.lang-toggle {
  display: flex; align-items: center; gap: 0;
  border: 1px solid rgba(255,255,255,.12); padding: 2px;
}
.lang-btn {
  font: 500 12px/1 'IBM Plex Mono', monospace; letter-spacing: .05em;
  padding: 7px 11px; border: none; cursor: pointer;
  background: transparent; color: #9aa4b0;
  transition: background .25s, color .25s;
}
.lang-btn.active { background: var(--ac); color: #fff; }

/* ===================== Hero ===================== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; overflow: hidden;
  padding: 120px 32px 80px;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 48px 48px;
}
.hero-fade {
  position: absolute; inset: 0;
  background: radial-gradient(120% 90% at 70% 20%, transparent 30%, rgba(12,16,22,.55) 75%, #0c1016 100%);
  pointer-events: none;
}
.hero-corner {
  position: absolute;
  font: 400 14px/1 'IBM Plex Mono', monospace;
  color: rgba(255,255,255,.18);
}
.hero-corner--tl { top: 80px; left: 28px; }
.hero-corner--tr { top: 80px; right: 28px; }
.hero-corner--bl { bottom: 40px; left: 28px; }
.hero-corner--br { bottom: 40px; right: 28px; }
.hero-corner--label {
  font: 400 11px/1 'IBM Plex Mono', monospace;
  letter-spacing: .1em; color: rgba(255,255,255,.28);
}

.hero-inner { position: relative; max-width: 1280px; margin: 0 auto; width: 100%; }

.kicker {
  display: flex; align-items: center; gap: 12px;
  font: 500 13px/1 'IBM Plex Mono', monospace;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--ac); margin-bottom: 32px;
}
.kicker-line { width: 32px; height: 1px; background: var(--ac); display: inline-block; }

.hero-title {
  margin: 0; max-width: 16ch;
  font: 600 clamp(40px,7vw,92px)/1.02 'Space Grotesk', sans-serif;
  letter-spacing: -.025em; color: #f0f4f8;
}
.hero-sub {
  margin: 36px 0 0; max-width: 60ch;
  font: 400 clamp(16px,1.5vw,20px)/1.65 'IBM Plex Sans', sans-serif;
  color: #9aa4b0;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 44px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 28px; text-decoration: none;
  font: 600 14px/1 'IBM Plex Mono', monospace;
  letter-spacing: .04em; text-transform: uppercase;
}
.btn-primary {
  background: var(--ac); color: #fff;
  transition: transform .25s, filter .25s;
}
.btn-primary:hover { transform: translateY(-2px); filter: brightness(1.08); }
.btn-ghost {
  background: transparent; color: #e6edf3;
  border: 1px solid rgba(255,255,255,.18);
  transition: border-color .25s, transform .25s;
}
.btn-ghost:hover { border-color: var(--ac); transform: translateY(-2px); }

.hero-status {
  display: flex; align-items: center; gap: 10px; margin-top: 48px;
  font: 500 12px/1 'IBM Plex Mono', monospace;
  letter-spacing: .08em; text-transform: uppercase; color: #7d8895;
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #3fb950; display: inline-block;
  animation: rbpulse 2.4s ease-in-out infinite;
}

/* ===================== Sections ===================== */
.section { scroll-margin-top: 80px; padding: 120px 32px; }
.section--about { background: #171d27; border-top: 1px solid rgba(255,255,255,.08); }
.section--skills { background: #0c1016; border-top: 1px solid rgba(255,255,255,.08); }
.section--work { background: #171d27; border-top: 1px solid rgba(255,255,255,.08); }
.section--contact {
  padding: 130px 32px 120px;
  border-top: 1px solid rgba(255,255,255,.08);
  background: radial-gradient(90% 130% at 50% -10%, rgba(255,255,255,.05), transparent 55%), #0c1016;
}
.container { max-width: 1280px; margin: 0 auto; }

.section-head { display: flex; align-items: center; gap: 24px; margin-bottom: 64px; }
.section-num {
  font: 600 clamp(44px,5.5vw,80px)/0.85 'Space Grotesk', sans-serif;
  color: var(--ac); letter-spacing: -.03em;
}
.section-rule { flex: 1; height: 1px; background: rgba(255,255,255,.18); }
.section-rule--dim { background: rgba(255,255,255,.14); }
.section-tag {
  font: 500 13px/1 'IBM Plex Mono', monospace;
  letter-spacing: .22em; text-transform: uppercase; color: #9aa4b0;
}

/* ===================== About ===================== */
.about-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 64px; align-items: start; }
.about-heading {
  margin: 0;
  font: 600 clamp(28px,3.4vw,46px)/1.12 'Space Grotesk', sans-serif;
  letter-spacing: -.02em; color: #f0f4f8;
}
.about-body { margin: 0; font: 400 17px/1.75 'IBM Plex Sans', sans-serif; color: #aab3bf; }

.stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; margin-top: 48px; }
.stat { border-top: 1px solid rgba(255,255,255,.12); padding-top: 18px; }
.stat-num { font: 600 clamp(32px,3vw,44px)/1 'Space Grotesk', sans-serif; color: var(--ac); }
.stat-label {
  margin-top: 10px;
  font: 500 12px/1.4 'IBM Plex Mono', monospace;
  letter-spacing: .04em; text-transform: uppercase; color: #7d8895;
}

/* ===================== Capabilities ===================== */
.skills-heading {
  margin: 0 0 56px; max-width: 18ch;
  font: 600 clamp(28px,3.4vw,46px)/1.12 'Space Grotesk', sans-serif;
  letter-spacing: -.02em; color: #f0f4f8;
}
.skills-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.card { border: 1px solid rgba(255,255,255,.08); background: #171d27; padding: 36px; }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 28px; }
.card-title { margin: 0; font: 600 22px/1.2 'Space Grotesk', sans-serif; color: #f0f4f8; }
.card-index { font: 500 12px/1 'IBM Plex Mono', monospace; color: rgba(255,255,255,.3); }

.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font: 500 13px/1 'IBM Plex Mono', monospace; color: #c2cad4;
  border: 1px solid rgba(255,255,255,.12); padding: 9px 14px;
  transition: border-color .25s, color .25s;
}
.chip:hover { border-color: var(--ac); color: #fff; }

.sub-block { margin-top: 28px; padding-top: 24px; border-top: 1px dashed rgba(255,255,255,.12); }
.sub-title {
  font: 500 11px/1 'IBM Plex Mono', monospace;
  letter-spacing: .1em; text-transform: uppercase; color: #7d8895; margin-bottom: 14px;
}
.disc-list { display: flex; flex-wrap: wrap; gap: 8px; }
.disc-item { font: 400 13px/1 'IBM Plex Sans', sans-serif; color: #9aa4b0; }
.focus-body { margin: 0; font: 400 14px/1.6 'IBM Plex Sans', sans-serif; color: #9aa4b0; }

/* ===================== Work ===================== */
.work-heading {
  margin: 0 0 40px; max-width: 18ch;
  font: 600 clamp(28px,3.4vw,46px)/1.12 'Space Grotesk', sans-serif;
  letter-spacing: -.02em; color: #f0f4f8;
}
.tabs {
  display: flex; gap: 28px;
  border-bottom: 1px solid rgba(255,255,255,.1); margin-bottom: 44px;
}
.tab {
  font: 500 14px/1 'IBM Plex Mono', monospace;
  letter-spacing: .03em; text-transform: uppercase;
  padding: 0 0 16px; background: none; border: none;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
  color: #6b7480; cursor: pointer;
  transition: color .3s, border-color .3s;
}
.tab.active { border-bottom-color: var(--ac); color: #f0f4f8; }

.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 24px; }
.project {
  border: 1px solid rgba(255,255,255,.08); background: #0c1016;
  display: flex; flex-direction: column;
  transition: transform .3s cubic-bezier(.22,.61,.36,1), border-color .3s;
}
.project:hover { transform: translateY(-6px); border-color: var(--ac); }
.project-thumb {
  position: relative; aspect-ratio: 16/10; background: #10151c;
  background-image: repeating-linear-gradient(135deg, rgba(255,255,255,.04) 0 1px, transparent 1px 11px);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.project-n {
  position: absolute; top: 14px; left: 14px;
  font: 500 12px/1 'IBM Plex Mono', monospace; color: rgba(255,255,255,.35);
}
.project-status {
  position: absolute; top: 12px; right: 12px;
  font: 500 10px/1 'IBM Plex Mono', monospace;
  letter-spacing: .06em; text-transform: uppercase;
  color: var(--ac); border: 1px solid var(--ac); padding: 5px 9px;
}
.project-ph {
  font: 500 13px/1 'IBM Plex Mono', monospace;
  letter-spacing: .15em; color: rgba(255,255,255,.28);
}
.project-body { padding: 24px 24px 26px; }
.project-title { margin: 0 0 10px; font: 600 19px/1.25 'Space Grotesk', sans-serif; color: #f0f4f8; }
.project-desc { margin: 0 0 18px; font: 400 14px/1.6 'IBM Plex Sans', sans-serif; color: #9aa4b0; }
.project-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.project-tag {
  font: 500 11px/1 'IBM Plex Mono', monospace; letter-spacing: .03em;
  color: #7d8895; background: rgba(255,255,255,.04); padding: 6px 10px;
}

/* ===================== Contact ===================== */
.contact-heading {
  margin: 0; max-width: 16ch;
  font: 600 clamp(34px,5vw,68px)/1.05 'Space Grotesk', sans-serif;
  letter-spacing: -.025em; color: #f0f4f8;
}
.contact-body {
  margin: 28px 0 44px; max-width: 52ch;
  font: 400 18px/1.65 'IBM Plex Sans', sans-serif; color: #9aa4b0;
}
.contact-email-row { display: flex; flex-wrap: wrap; gap: 14px 40px; align-items: center; }
.contact-email {
  font: 600 clamp(20px,2.2vw,30px)/1.2 'Space Grotesk', sans-serif;
  color: #f0f4f8; text-decoration: none;
  border-bottom: 2px solid var(--ac); padding-bottom: 4px;
  transition: color .25s;
}
.contact-email:hover { color: var(--ac); }
.contact-links { display: flex; flex-wrap: wrap; gap: 14px 28px; margin-top: 36px; }
.contact-link {
  font: 500 13px/1 'IBM Plex Mono', monospace;
  letter-spacing: .05em; text-transform: uppercase;
  color: #9aa4b0; text-decoration: none;
  border: 1px solid rgba(255,255,255,.14); padding: 11px 18px;
  transition: border-color .25s, color .25s;
}
.contact-link:hover { border-color: var(--ac); color: #fff; }
.contact-loc {
  font: 500 13px/1 'IBM Plex Mono', monospace;
  letter-spacing: .05em; text-transform: uppercase;
  color: #7d8895; border: 1px solid rgba(255,255,255,.14); padding: 11px 18px;
}

/* ===================== Footer ===================== */
.site-footer { padding: 32px; border-top: 1px solid rgba(255,255,255,.08); }
.footer-inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 12px;
  align-items: center; justify-content: space-between;
  font: 500 12px/1 'IBM Plex Mono', monospace;
  letter-spacing: .05em; color: #6b7480;
}

/* ===================== Responsive ===================== */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .skills-grid { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 720px) {
  .section { padding: 88px 24px; }
  .section--contact { padding: 96px 24px 88px; }
  .hero { padding: 104px 24px 72px; }
  .header-inner { padding: 0 20px; }
  .nav { gap: 18px; }
  .nav-link { display: none; }
  .hero-corner--tl, .hero-corner--tr { left: 20px; right: 20px; }
}
@media (max-width: 480px) {
  .stats { grid-template-columns: 1fr; gap: 18px; }
  .card { padding: 28px 24px; }
}