/* ========================================================
   SCI-FI / ROBOT THEME — Custom CSS
   (Supplements Tailwind; handles animations & effects)
   ======================================================== */

:root {
  --cyan:   #00e5ff;
  --green:  #39ff14;
  --purple: #8b2be2;
  --red:    #ff003c;
  --bg:     #050510;
  --border: #1a2f4a;
  --text:   #94b8d0;
}

/* ----------  Scrollbar  ---------- */
::-webkit-scrollbar        { width: 5px; }
::-webkit-scrollbar-track  { background: #0a0a1f; }
::-webkit-scrollbar-thumb  { background: var(--cyan); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--green); }

/* ----------  CRT scanlines overlay  ---------- */
.scanlines {
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0, 229, 255, 0.015) 3px,
    rgba(0, 229, 255, 0.015) 4px
  );
  pointer-events: none;
}

/* ----------  Grid background  ---------- */
.grid-bg {
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ----------  Glow utilities  ---------- */
.glow-cyan   { box-shadow: 0 0 12px rgba(0,229,255,.55), 0 0 30px rgba(0,229,255,.2); }
.glow-green  { box-shadow: 0 0 12px rgba(57,255,20,.55),  0 0 30px rgba(57,255,20,.2); }
.glow-purple { box-shadow: 0 0 12px rgba(139,43,226,.55), 0 0 30px rgba(139,43,226,.2); }

.text-glow-cyan   { text-shadow: 0 0 8px var(--cyan),   0 0 20px var(--cyan); }
.text-glow-green  { text-shadow: 0 0 8px var(--green),  0 0 20px var(--green); }
.text-glow-purple { text-shadow: 0 0 8px var(--purple), 0 0 20px var(--purple); }

/* ----------  Neon border boxes  ---------- */
.neon-box {
  border: 1px solid var(--border);
  transition: border-color .3s, box-shadow .3s;
}
.neon-box:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 14px rgba(0,229,255,.35), inset 0 0 8px rgba(0,229,255,.06);
}

/* ----------  Nav link underline  ---------- */
.nav-link {
  position: relative;
  transition: color .25s;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan);
  transition: width .3s ease;
}
.nav-link:hover { color: var(--cyan) !important; }
.nav-link:hover::after { width: 100%; }

/* ----------  Typing cursor  ---------- */
.cursor::after {
  content: '█';
  color: var(--cyan);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ----------  CRT flicker  ---------- */
.crt {
  animation: flicker 8s infinite;
}
@keyframes flicker {
  0%,96%,98%,100% { opacity: 1; }
  97%             { opacity: .82; }
  99%             { opacity: .95; }
}

/* ----------  ASCII robot  ---------- */
.ascii-robot {
  font-size: .68rem;
  line-height: 1.15;
  white-space: pre;
  color: var(--cyan);
  text-shadow: 0 0 6px var(--cyan);
  user-select: none;
}

/* ----------  Online pulse dot  ---------- */
.dot-online {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%,100% { box-shadow: 0 0 6px var(--green); }
  50%     { box-shadow: 0 0 14px var(--green), 0 0 24px var(--green); }
}

/* ----------  Section label  ---------- */
.section-tag {
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--purple);
  text-shadow: 0 0 8px var(--purple);
}

/* ----------  Corner bracket decoration  ---------- */
.brackets {
  position: relative;
  padding: 1.5rem;
}
.brackets::before,
.brackets::after {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  border-color: var(--cyan);
  border-style: solid;
  opacity: .6;
}
.brackets::before { top: 0; left: 0;  border-width: 2px 0 0 2px; }
.brackets::after  { bottom: 0; right: 0; border-width: 0 2px 2px 0; }

/* ----------  Skill progress bar  ---------- */
.skill-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--purple), var(--cyan));
  box-shadow: 0 0 8px var(--cyan);
  width: 0;
  transition: width 1.2s cubic-bezier(.4,0,.2,1);
}

/* ----------  Project card shine on hover  ---------- */
.project-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: border-color .3s, transform .3s, box-shadow .3s;
}
.project-card::before {
  content: '';
  position: absolute;
  top: -60%; left: -60%;
  width: 220%; height: 220%;
  background: linear-gradient(45deg, transparent 40%, rgba(0,229,255,.06) 50%, transparent 60%);
  transform: rotate(0deg);
  opacity: 0;
  transition: opacity .4s;
}
.project-card:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 20px rgba(0,229,255,.25);
  transform: translateY(-4px);
}
.project-card:hover::before { opacity: 1; }

/* ----------  Button base  ---------- */
.btn-cyber {
  border: 1px solid;
  padding: .45rem 1.4rem;
  font-size: .75rem;
  letter-spacing: .15em;
  cursor: pointer;
  transition: background .25s, box-shadow .25s;
}
.btn-cyan {
  border-color: var(--cyan);
  color: var(--cyan);
  background: transparent;
}
.btn-cyan:hover {
  background: rgba(0,229,255,.12);
  box-shadow: 0 0 16px rgba(0,229,255,.4);
}
.btn-green {
  border-color: var(--green);
  color: var(--green);
  background: rgba(57,255,20,.06);
}
.btn-green:hover {
  background: rgba(57,255,20,.15);
  box-shadow: 0 0 16px rgba(57,255,20,.4);
}

/* ----------  Divider  ---------- */
.cyber-hr {
  border: none;
  border-top: 1px solid transparent;
  border-image: linear-gradient(to right, transparent, var(--cyan), transparent) 1;
  margin: 4rem 0;
  opacity: .4;
}

/* ----------  Contact input  ---------- */
.cyber-input {
  background: rgba(10,10,31,.8);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .6rem 1rem;
  font-family: 'Courier New', monospace;
  font-size: .85rem;
  width: 100%;
  transition: border-color .3s, box-shadow .3s;
  outline: none;
}
.cyber-input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 10px rgba(0,229,255,.25);
}
.cyber-input::placeholder { color: #2a4a6a; }

/* ----------  Footer  ---------- */
.footer-line {
  border-top: 1px solid var(--border);
}

/* ──────────────────────────────────────────────
   RESPONSIVE LAYOUT HELPERS
   ────────────────────────────────────────────── */

/* Hero 2-col grid (includes centering) */
.rg-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1100px;
  width: 100%;
}

/* Generic section 2-col grid */
.rg-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

/* 2-col tools/tags mini grid */
.rg-2--tools {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .8rem;
}

/* ── Tablet  ≤ 900px ── */
@media (max-width: 900px) {
  .rg-hero,
  .rg-2 {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Robot renders above text on mobile */
  .robot-col { order: -1; }

  /* Push robot col down enough to clear the fixed navbar (~56px) */
  .robot-col { padding-top: 1rem; }

  /* Scale down robot scene */
  #robot-scene {
    transform: scale(0.82);
    transform-origin: top center;
  }

  /* Reduce vertical section padding */
  .sec-pad {
    padding-top: 5rem !important;
    padding-bottom: 4rem !important;
  }
}

/* ── Mobile  ≤ 600px ── */
@media (max-width: 600px) {
  #robot-scene {
    transform: scale(0.65);
    transform-origin: top center;
  }

  .sec-pad {
    padding-top: 3rem !important;
    padding-bottom: 3rem !important;
    padding-left: 1rem !important;
    padding-right: 1rem !important;
  }

  /* Skills/tools keep 2-col */
  .rg-2--tools {
    grid-template-columns: 1fr 1fr;
  }

  /* Navbar brand font smaller */
  #main-nav .brand-name { font-size: .9rem !important; }
}

/* ── Very small  ≤ 400px ── */
@media (max-width: 400px) {
  .rg-2--tools { grid-template-columns: 1fr; }

  #robot-scene {
    transform: scale(0.55);
  }
}

/* ----------  Experience timeline padding on small screens  ---------- */
@media (max-width: 600px) {
  .timeline-wrap { padding-left: 1.4rem !important; }
}

/* ----------  Contact channel link: allow wrapping  ---------- */
@media (max-width: 480px) {
  .channel-row { flex-direction: column !important; align-items: flex-start !important; gap: .2rem !important; }
}

/* ----------  Mobile  ---------- */
@media (max-width: 640px) {
  .ascii-robot { display: none; }
}

/* ─────────────────────────────────────────
   ROBOT 3D ANIMATIONS
   ───────────────────────────────────────── */

/* Floating up/down */
@keyframes robotFloat {
  0%,100% { transform: translateY(0px) rotateY(-15deg) rotateX(4deg); }
  50%      { transform: translateY(-10px) rotateY(-15deg) rotateX(4deg); }
}

/* Antenna tip pulse */
@keyframes antennaPulse {
  0%,100% { box-shadow: 0 0 8px #39ff14, 0 0 16px #39ff14; transform: translateX(-50%) scale(1); }
  50%     { box-shadow: 0 0 16px #39ff14, 0 0 32px #39ff14, 0 0 48px rgba(57,255,20,.4); transform: translateX(-50%) scale(1.25); }
}

/* Eye glow breathe */
@keyframes eyeGlow {
  0%,100% { box-shadow: 0 0 8px var(--cyan), 0 0 16px rgba(0,229,255,.4); }
  50%     { box-shadow: 0 0 18px var(--cyan), 0 0 32px rgba(0,229,255,.7), inset 0 0 6px rgba(255,255,255,.2); }
}

/* Mouth equalizer bars */
@keyframes mouthBar {
  0%,100% { transform: scaleY(1); }
  50%     { transform: scaleY(2); }
}

/* Core reactor pulse */
@keyframes reactorPulse {
  0%,100% { box-shadow: 0 0 14px #39ff14, 0 0 28px rgba(57,255,20,.4), inset 0 0 6px rgba(57,255,20,.2); }
  50%     { box-shadow: 0 0 28px #39ff14, 0 0 52px rgba(57,255,20,.6), inset 0 0 12px rgba(57,255,20,.4); }
}

/* Reactor inner ring spin */
@keyframes reactorRing {
  from { transform: rotate(0deg);   border-color: rgba(57,255,20,.5) transparent rgba(57,255,20,.5) transparent; }
  to   { transform: rotate(360deg); border-color: rgba(57,255,20,.5) transparent rgba(57,255,20,.5) transparent; }
}

/* LED blink */
@keyframes ledBlink {
  0%,100% { opacity: 1; }
  45%     { opacity: 1; }
  50%     { opacity: .15; }
  55%     { opacity: 1; }
}

/* Chest load bar */
@keyframes loadBar {
  0%   { width: 15%; }
  50%  { width: 90%; }
  100% { width: 15%; }
}