/* ==========================================================================
   GABRIEL BANDA — signal/portfolio
   Design language: an idle audio signal / mixing-console UI.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --bg:        #08090b;
  --bg-1:      #101318;
  --bg-2:      #171b21;
  --line:      #22262c;
  --line-soft: #191c21;

  --signal:      #4dffb8;
  --signal-dim:  rgba(77,255,184,.14);
  --signal-glow: rgba(77,255,184,.35);
  --amber:       #ffb454;
  --rec:         #ff5f5f;

  --text:      #eef1f0;
  --text-dim:  #8b93a1;
  --text-faint:#565d68;

  --display: 'Space Grotesk', sans-serif;
  --body:    'IBM Plex Sans', sans-serif;
  --mono:    'IBM Plex Mono', monospace;

  --ease: cubic-bezier(.16,.84,.32,1);
  --radius: 14px;
}

*{ margin:0; padding:0; box-sizing:border-box; }

html{ scroll-behavior:smooth; }

body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--body);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:'';
  position:fixed; inset:0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity:.35;
  pointer-events:none;
  z-index:0;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 40%, transparent 100%);
}

a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }
img{ max-width:100%; display:block; }

.container{ max-width:1200px; margin:0 auto; padding:0 2rem; position:relative; z-index:2; }
.mono{ font-family:var(--mono); letter-spacing:.02em; }

::selection{ background:var(--signal); color:#04120c; }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--signal);
  outline-offset:3px;
  border-radius:4px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

/* ---------- rec dot ---------- */
.rec-dot{
  width:7px; height:7px; border-radius:50%;
  background:var(--rec);
  display:inline-block;
  box-shadow:0 0 0 0 rgba(255,95,95,.5);
  animation:pulse 1.8s infinite;
}
.rec-dot.green{ background:var(--signal); box-shadow:0 0 0 0 var(--signal-glow); }
@keyframes pulse{
  0%{ box-shadow:0 0 0 0 rgba(255,95,95,.45); }
  70%{ box-shadow:0 0 0 8px rgba(255,95,95,0); }
  100%{ box-shadow:0 0 0 0 rgba(255,95,95,0); }
}

/* ---------- transport / nav ---------- */
.transport{
  position:sticky; top:0; z-index:200;
  background:rgba(8,9,11,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.transport-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:1rem 2rem; gap:1.5rem; flex-wrap:wrap;
}
.brand{
  font-family:var(--display); font-weight:700; font-size:1.15rem;
  letter-spacing:.01em;
}
.brand span{ color:var(--signal); }

.nav-links{ display:flex; align-items:center; gap:.35rem; }
.nav-link{
  font-family:var(--mono); font-size:.8rem; color:var(--text-dim);
  padding:.55rem .9rem; border-radius:8px; position:relative;
  transition:color .25s var(--ease), background .25s var(--ease);
  display:flex; align-items:center; gap:.5rem;
}
.nav-link::before{
  content:attr(data-ch);
  color:var(--text-faint); font-size:.7rem;
}
.nav-link:hover, .nav-link.active{ color:var(--text); background:var(--bg-1); }
.nav-link.active::after{
  content:''; position:absolute; left:.9rem; right:.9rem; bottom:.28rem;
  height:1px; background:var(--signal);
}

.transport-status{
  display:flex; align-items:center; gap:.5rem;
  font-size:.72rem; color:var(--text-dim);
}

.menu-btn{
  display:none; flex-direction:column; gap:4px;
  background:none; border:none; cursor:pointer; padding:.5rem;
}
.menu-btn span{ width:20px; height:2px; background:var(--text); display:block; transition:var(--ease) .3s; }
.menu-btn.open span:nth-child(1){ transform:translateY(6px) rotate(45deg); }
.menu-btn.open span:nth-child(2){ opacity:0; }
.menu-btn.open span:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }

/* ---------- buttons ---------- */
.btn-solid, .btn-line{
  display:inline-flex; align-items:center; gap:.6rem;
  font-family:var(--mono); font-size:.85rem; font-weight:500;
  padding:.85rem 1.5rem; border-radius:40px;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease);
}
.btn-solid{ background:var(--signal); color:#04140d; }
.btn-solid:hover{ transform:translateY(-3px); box-shadow:0 14px 30px -12px var(--signal-glow); }
.btn-line{ border:1px solid var(--line); color:var(--text); }
.btn-line:hover{ border-color:var(--signal); color:var(--signal); transform:translateY(-3px); }

/* ---------- section scaffolding ---------- */
section{ padding:6.5rem 0; position:relative; z-index:2; }
.ch-label{
  font-family:var(--mono); font-size:.78rem; color:var(--signal);
  display:flex; align-items:center; gap:.6rem; margin-bottom:1rem;
}
.ch-label::before{ content:''; width:22px; height:1px; background:var(--signal); }

.section-title{
  font-family:var(--display); font-weight:600;
  font-size:clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom:1rem; letter-spacing:-.01em;
}
.section-lede{ color:var(--text-dim); max-width:56ch; font-size:1.02rem; margin-bottom:2.8rem; }

.divider{ border:none; border-top:1px solid var(--line); margin:0; }

/* reveal-on-scroll */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in{ opacity:1; transform:translateY(0); }
.reveal-stagger > *{ opacity:0; transform:translateY(24px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal-stagger.in > *{ opacity:1; transform:translateY(0); }
.reveal-stagger.in > *:nth-child(1){ transition-delay:.05s; }
.reveal-stagger.in > *:nth-child(2){ transition-delay:.12s; }
.reveal-stagger.in > *:nth-child(3){ transition-delay:.19s; }
.reveal-stagger.in > *:nth-child(4){ transition-delay:.26s; }
.reveal-stagger.in > *:nth-child(5){ transition-delay:.33s; }
.reveal-stagger.in > *:nth-child(6){ transition-delay:.4s; }

/* ---------- hero ---------- */
.hero{ min-height:92vh; display:flex; align-items:center; padding-top:3rem; }
.hero-inner{ max-width:820px; }
.waveform-canvas{ position:absolute; inset:0; width:100%; height:100%; z-index:0; opacity:.85; }
.hero{ overflow:hidden; }
.hero-meta{ font-size:.78rem; color:var(--text-dim); display:flex; align-items:center; gap:.55rem; margin-bottom:1.6rem; }
.track-title{
  font-family:var(--display); font-weight:700;
  font-size:clamp(2.6rem, 8vw, 5rem); line-height:1.02; letter-spacing:-.02em;
  margin-bottom:.9rem;
}
.track-title .accent{ color:var(--signal); }
.track-sub{ color:var(--signal); font-size:.95rem; min-height:1.4em; margin-bottom:1.4rem; }
.track-sub::after{ content:'▍'; animation:blink 1s steps(1) infinite; margin-left:2px; }
@keyframes blink{ 50%{ opacity:0; } }
.hero-desc{ color:var(--text-dim); max-width:56ch; font-size:1.05rem; margin-bottom:2.2rem; }
.hero-desc a{ color:var(--text); border-bottom:1px solid var(--signal); }
.hero-actions{ display:flex; gap:1rem; flex-wrap:wrap; margin-bottom:3rem; }

.hero-stats-strip{
  display:flex; gap:2.4rem; flex-wrap:wrap; font-size:.8rem; color:var(--text-dim);
  border-top:1px solid var(--line); padding-top:1.4rem;
}
.hero-stats-strip b{ color:var(--text); font-family:var(--display); font-size:1.3rem; display:block; }

/* ---------- panels / cards ---------- */
.panel{
  background:var(--bg-1); border:1px solid var(--line); border-radius:var(--radius);
  padding:1.8rem; transition:border-color .3s var(--ease), transform .3s var(--ease);
}
.panel:hover{ border-color:#3a4048; }

.grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:2rem; }
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:1.6rem; }

/* project cards */
.project-card{ display:flex; flex-direction:column; gap:1rem; }
.project-card .badge-row{ display:flex; justify-content:space-between; align-items:center; }
.project-badge{
  font-family:var(--mono); font-size:.68rem; color:var(--signal);
  background:var(--signal-dim); padding:.25rem .65rem; border-radius:20px;
  display:inline-flex; align-items:center; gap:.4rem;
}
.project-card h3{ font-family:var(--display); font-size:1.4rem; }
.project-card p{ color:var(--text-dim); font-size:.92rem; }
.tech-row{ display:flex; gap:.5rem; flex-wrap:wrap; }
.tech-row span{
  font-family:var(--mono); font-size:.68rem; color:var(--text-dim);
  border:1px solid var(--line); padding:.2rem .6rem; border-radius:20px;
}
.card-links{ display:flex; gap:1.2rem; margin-top:.4rem; }
.card-links a{
  font-family:var(--mono); font-size:.8rem; color:var(--signal);
  display:inline-flex; align-items:center; gap:.4rem; transition:gap .2s var(--ease);
}
.card-links a:hover{ gap:.65rem; }

/* mini waveform divider */
.mini-wave{ width:100%; height:36px; display:block; opacity:.5; }

/* live badge */
.badge-live{
  display:inline-flex; align-items:center; gap:.5rem;
  font-family:var(--mono); font-size:.72rem; color:var(--text-dim);
  border:1px solid var(--line); padding:.35rem .8rem; border-radius:20px;
}

/* EQ / skill bars */
.eq-grid{ display:flex; flex-direction:column; gap:1.3rem; }
.eq-row{ display:grid; grid-template-columns:150px 1fr 90px; align-items:center; gap:1rem; }
.eq-row .label{ font-family:var(--mono); font-size:.85rem; }
.eq-row .tier{ font-family:var(--mono); font-size:.7rem; color:var(--text-dim); text-align:right; }
.eq-bars{ display:flex; align-items:flex-end; gap:3px; height:26px; }
.eq-bars span{
  width:5px; background:var(--line); border-radius:2px;
  transform:scaleY(0); transform-origin:bottom;
  transition:transform .6s var(--ease), background .3s var(--ease);
}
.eq-row.in .eq-bars span{ transform:scaleY(1); }
.eq-row.in .eq-bars span.on{ background:var(--signal); }

/* timeline */
.timeline{ border-left:1px solid var(--line); padding-left:2rem; display:flex; flex-direction:column; gap:2.4rem; }
.timeline-item{ position:relative; }
.timeline-item::before{
  content:''; position:absolute; left:-2.44rem; top:.3rem; width:9px; height:9px; border-radius:50%;
  background:var(--bg); border:2px solid var(--signal);
}
.timeline-item time{ font-family:var(--mono); font-size:.75rem; color:var(--signal); }
.timeline-item h3{ font-family:var(--display); font-size:1.2rem; margin:.4rem 0 .4rem; }
.timeline-item p{ color:var(--text-dim); font-size:.92rem; max-width:54ch; }

/* github repo grid */
.repo-grid{ display:grid; grid-template-columns:repeat(auto-fill, minmax(300px,1fr)); gap:1.4rem; }
.repo-card{ display:flex; flex-direction:column; gap:.8rem; height:100%; }
.repo-card .repo-head{ display:flex; justify-content:space-between; gap:.6rem; align-items:flex-start; }
.repo-card h4{ font-family:var(--display); font-size:1.08rem; }
.repo-card p{ color:var(--text-dim); font-size:.85rem; flex:1; }
.repo-meta{ display:flex; gap:1rem; flex-wrap:wrap; font-family:var(--mono); font-size:.72rem; color:var(--text-dim); }
.repo-meta .dot{ width:8px; height:8px; border-radius:50%; background:var(--signal); display:inline-block; margin-right:.35rem; }
.skeleton{ position:relative; overflow:hidden; background:var(--bg-1); border:1px solid var(--line); border-radius:var(--radius); height:170px; }
.skeleton::after{
  content:''; position:absolute; inset:0;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.04), transparent);
  animation:shimmer 1.6s infinite;
}
@keyframes shimmer{ 0%{ transform:translateX(-100%);} 100%{ transform:translateX(100%);} }

.error-note{ font-family:var(--mono); font-size:.85rem; color:var(--amber); }

/* profile header on github page */
.profile-head{ display:flex; gap:2rem; align-items:center; flex-wrap:wrap; }
.avatar-wrap{ width:120px; height:120px; border-radius:50%; overflow:hidden; border:1px solid var(--line); flex-shrink:0; background:var(--bg-1); }
.profile-stats{ display:flex; gap:2rem; flex-wrap:wrap; margin-top:1rem; }
.profile-stats div b{ display:block; font-family:var(--display); font-size:1.5rem; color:var(--signal); }
.profile-stats div span{ font-family:var(--mono); font-size:.72rem; color:var(--text-dim); }

.activity-list{ display:flex; flex-direction:column; gap:0; }
.activity-list li{
  display:flex; gap:1rem; padding:1rem 0; border-bottom:1px solid var(--line);
  font-size:.88rem; color:var(--text-dim); align-items:baseline;
}
.activity-list li time{ font-family:var(--mono); font-size:.7rem; color:var(--text-faint); white-space:nowrap; }
.activity-list li strong{ color:var(--text); }

.readme-cards{ display:grid; grid-template-columns:1fr 1fr; gap:1.4rem; }
.readme-cards img{ width:100%; border-radius:var(--radius); border:1px solid var(--line); }

/* ---------- about page bits ---------- */
.about-grid{ display:grid; grid-template-columns:1.4fr 1fr; gap:3rem; align-items:start; }
.info-list{ display:flex; flex-direction:column; gap:.9rem; margin-top:1.6rem; }
.info-list div{ display:flex; gap:.8rem; font-family:var(--mono); font-size:.85rem; color:var(--text-dim); }
.info-list b{ color:var(--text); }

/* ---------- contact ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:3rem; }
.social-row{ display:flex; gap:.8rem; flex-wrap:wrap; margin:1.6rem 0; }
.social-row a{
  width:46px; height:46px; border:1px solid var(--line); border-radius:50%;
  display:flex; align-items:center; justify-content:center; font-size:1.1rem;
  transition:var(--ease) .25s;
}
.social-row a:hover{ border-color:var(--signal); color:var(--signal); transform:translateY(-4px); }
.contact-form{ display:flex; flex-direction:column; gap:1rem; }
.contact-form input, .contact-form textarea{
  background:var(--bg-1); border:1px solid var(--line); color:var(--text);
  padding:1rem 1.2rem; border-radius:12px; font-family:var(--body); font-size:.95rem;
  transition:border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.contact-form input:focus, .contact-form textarea:focus{
  outline:none; border-color:var(--signal); box-shadow:0 0 0 3px var(--signal-dim);
}
.contact-form button{
  background:var(--signal); color:#04140d; border:none; padding:1rem; border-radius:40px;
  font-family:var(--mono); font-weight:600; cursor:pointer; transition:var(--ease) .25s;
}
.contact-form button:hover{ transform:scale(.98); box-shadow:0 14px 30px -12px var(--signal-glow); }
#formStatus{ font-family:var(--mono); font-size:.8rem; }

/* footer */
footer{ border-top:1px solid var(--line); padding:3rem 0; position:relative; z-index:2; }
.footer-inner{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:1.5rem; }
.footer-links{ display:flex; gap:1.6rem; flex-wrap:wrap; }
.footer-links a{ font-family:var(--mono); font-size:.8rem; color:var(--text-dim); transition:color .2s; }
.footer-links a:hover{ color:var(--signal); }
footer p{ font-family:var(--mono); font-size:.78rem; color:var(--text-faint); }

/* page hero (non-home) */
.page-hero{ padding:5rem 0 2rem; }
.page-eyebrow{ font-family:var(--mono); font-size:.8rem; color:var(--signal); margin-bottom:1rem; display:flex; align-items:center; gap:.6rem; }
.page-title{ font-family:var(--display); font-weight:700; font-size:clamp(2.2rem,6vw,3.4rem); letter-spacing:-.02em; }
.page-lede{ color:var(--text-dim); max-width:60ch; margin-top:1.2rem; font-size:1.05rem; }

/* ---------- responsive ---------- */
@media (max-width: 900px){
  .grid-3{ grid-template-columns:1fr; }
  .grid-2, .about-grid, .contact-grid, .readme-cards{ grid-template-columns:1fr; }
  .eq-row{ grid-template-columns:110px 1fr 70px; }
}

@media (max-width: 760px){
  .nav-links{
    position:fixed; top:64px; left:0; right:0; bottom:0;
    background:rgba(8,9,11,.98); flex-direction:column; align-items:stretch;
    padding:1.5rem; gap:.3rem;
    transform:translateY(-8px); opacity:0; pointer-events:none;
    transition:var(--ease) .3s;
  }
  .nav-links.show{ transform:translateY(0); opacity:1; pointer-events:auto; }
  .menu-btn{ display:flex; }
  .transport-status{ display:none; }
  .hero-stats-strip{ gap:1.4rem; }
  .profile-head{ flex-direction:column; text-align:center; }
  .profile-stats{ justify-content:center; }
}