/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --term-bg: #0d1117;
  --term-green: #00ff41;
  --term-green-dim: #00cc33;
  --term-green-faint: #004410;
  --term-border: #1a2a1a;

  --ath-bg: #0f172a;
  --ath-text: #f8fafc;
  --ath-gold: #e2a04a;
  --ath-blue: #38bdf8;
  --ath-muted: #94a3b8;
  --ath-border: rgba(248,250,252,0.07);

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

html, body { width: 100%; height: 100%; overflow: hidden; }
body { background: #000; font-family: 'Inter', sans-serif; -webkit-font-smoothing: antialiased; }

/* ===== LANDING ===== */

#landing {
  position: fixed;
  inset: 0;
  display: flex;
  z-index: 100;
  transition: opacity 0.55s var(--ease);
}

#landing.exiting { opacity: 0; pointer-events: none; }

.split {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  overflow: hidden;
  transition: flex 0.4s var(--ease), background 0.3s;
  outline: none;
}

.split:focus-visible { outline: 2px solid var(--term-green); outline-offset: -4px; }

/* Tech side */
.tech-side { background: var(--term-bg); }

.split-bg-grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(0,255,65,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,65,0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  transition: opacity 0.3s;
}

.tech-side:hover .split-bg-grid { opacity: 1.5; }

.split-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  transition: opacity 0.4s;
}

.tech-glow {
  width: 70%;
  height: 70%;
  background: radial-gradient(ellipse, rgba(0,255,65,0.08) 0%, transparent 70%);
  top: 15%;
  left: 0%;
  opacity: 1;
}

.tech-side:hover .tech-glow { opacity: 2.5; }

.athletic-glow {
  width: 70%;
  height: 70%;
  background: radial-gradient(ellipse, rgba(226,160,74,0.1) 0%, rgba(56,189,248,0.06) 50%, transparent 70%);
  top: 10%;
  right: 0%;
  opacity: 1;
}

.athletic-side { background: var(--ath-bg); }
.athletic-side:hover .athletic-glow { opacity: 2.5; }

/* Divider */
.split-divider {
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg,
    transparent 0%,
    rgba(0,255,65,0.35) 25%,
    rgba(56,189,248,0.35) 75%,
    transparent 100%);
  transform: translateX(-50%);
  z-index: 2;
  transition: box-shadow 0.3s;
  pointer-events: none;
}

#landing:hover .split-divider {
  box-shadow: 0 0 12px rgba(0,255,65,0.25), 0 0 25px rgba(56,189,248,0.15);
}

/* Split content */
.split-content {
  position: relative;
  z-index: 1;
  text-align: center;
  user-select: none;
  padding: 2rem;
}

.split-eyebrow {
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  opacity: 0;
  transition: opacity 0.3s;
}

.split:hover .split-eyebrow { opacity: 0.5; }

.tech-eyebrow { color: var(--term-green); font-family: 'JetBrains Mono', monospace; }
.athletic-eyebrow { color: var(--ath-gold); }

.split-label {
  font-size: clamp(2.5rem, 5.5vw, 5rem);
  font-weight: 900;
  letter-spacing: 0.12em;
  line-height: 1;
  margin-bottom: 1.25rem;
  transition: text-shadow 0.3s;
}

.tech-label {
  font-family: 'JetBrains Mono', monospace;
  color: var(--term-green);
  text-shadow: 0 0 25px rgba(0,255,65,0.3), 0 0 50px rgba(0,255,65,0.15);
}

.tech-side:hover .tech-label {
  text-shadow: 0 0 40px rgba(0,255,65,0.6), 0 0 80px rgba(0,255,65,0.3);
}

.athletic-label {
  font-family: 'Inter', sans-serif;
  color: var(--ath-text);
  text-shadow: 0 0 25px rgba(226,160,74,0.2);
}

.athletic-side:hover .athletic-label {
  color: var(--ath-gold);
  text-shadow: 0 0 40px rgba(226,160,74,0.45), 0 0 80px rgba(226,160,74,0.2);
}

.split-hint {
  font-size: 0.88rem;
  margin-bottom: 0.5rem;
  opacity: 0.55;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.tech-side .split-hint { font-family: 'JetBrains Mono', monospace; color: var(--term-green-dim); }
.athletic-side .split-hint { color: var(--ath-blue); font-size: 0.82rem; letter-spacing: 0.04em; }

.landing-cursor {
  animation: blink 1s step-end infinite;
  color: var(--term-green);
}

.split-sub {
  font-size: 0.72rem;
  opacity: 0.3;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.tech-side .split-sub { color: var(--term-green); font-family: 'JetBrains Mono', monospace; }
.athletic-side .split-sub { color: var(--ath-text); }

.enter-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 0.3s;
  white-space: nowrap;
}

.split:hover .enter-hint { opacity: 0.35; }
.tech-side .enter-hint { color: var(--term-green); font-family: 'JetBrains Mono', monospace; }
.athletic-side .enter-hint { color: var(--ath-gold); }

/* ===== MAIN SECTIONS ===== */

.main-section {
  position: fixed;
  inset: 0;
  overflow-y: auto;
  overflow-x: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s var(--ease);
  display: none;
}

.main-section.visible {
  opacity: 1;
  pointer-events: all;
  display: block;
}

/* ===== SECTION NAV ===== */

.section-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.5rem;
  height: 56px;
}

.tech-nav {
  background: rgba(13,17,23,0.9);
  border-bottom: 1px solid var(--term-border);
  backdrop-filter: blur(20px);
}

.athletic-nav {
  background: rgba(15,23,42,0.9);
  border-bottom: 1px solid var(--ath-border);
  backdrop-filter: blur(20px);
  flex-wrap: nowrap;
  gap: 1rem;
}

.nav-logo {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.tech-nav-logo { font-family: 'JetBrains Mono', monospace; color: var(--term-green); }
.athletic-nav-logo { color: var(--ath-gold); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  color: var(--term-green-dim);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  opacity: 0.6;
}

.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--term-green);
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%,100% { box-shadow: 0 0 0 0 rgba(0,255,65,0.5); }
  50% { box-shadow: 0 0 0 5px rgba(0,255,65,0); }
}

.back-btn {
  background: none;
  border: 1px solid;
  border-radius: 6px;
  padding: 0.3rem 0.75rem;
  font-size: 0.72rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  letter-spacing: 0.05em;
}

.tech-back {
  border-color: var(--term-border);
  color: var(--term-green-dim);
  font-family: 'JetBrains Mono', monospace;
}

.tech-back:hover { background: rgba(0,255,65,0.07); color: var(--term-green); border-color: rgba(0,255,65,0.3); }

.athletic-back { border-color: var(--ath-border); color: var(--ath-muted); flex-shrink: 0; }
.athletic-back:hover { background: rgba(248,250,252,0.05); color: var(--ath-text); }

/* Athletic tab buttons */
.athletic-tabs { display: flex; gap: 0.15rem; overflow-x: auto; scrollbar-width: none; }
.athletic-tabs::-webkit-scrollbar { display: none; }

.tab-btn {
  background: none;
  border: none;
  color: var(--ath-muted);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'Inter', sans-serif;
  white-space: nowrap;
}

.tab-btn:hover { color: var(--ath-text); background: rgba(248,250,252,0.05); }
.tab-btn.active { color: var(--ath-gold); background: rgba(226,160,74,0.1); }

/* Tab content */
.tab-content { display: none; padding-top: 56px; min-height: 100vh; }
.tab-content.active { display: block; }

/* ===== TERMINAL ===== */

#techSection { background: var(--term-bg); }

#terminalWrapper {
  position: relative;
  width: 100%;
  min-height: 100vh;
}

.scanlines {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.04) 2px,
    rgba(0,0,0,0.04) 4px
  );
  pointer-events: none;
  z-index: 10;
  opacity: 0.6;
}

#terminal {
  font-family: 'JetBrains Mono', monospace;
  color: var(--term-green);
  padding: 1.5rem 1.75rem 6rem;
  min-height: calc(100vh - 56px);
  position: relative;
  z-index: 2;
  font-size: 0.875rem;
  line-height: 1.75;
  padding-top: calc(56px + 1.5rem);
  cursor: text;
}

#terminalOutput { white-space: pre-wrap; }

#terminalOutput .line {
  display: block;
  white-space: pre-wrap;
  word-break: break-word;
  animation: fadeIn 0.08s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.line.dim { color: var(--term-green-dim); opacity: 0.65; }
.line.bright { color: #90ff90; }
.line.faint { color: rgba(0,204,51,0.4); }
.line.error { color: #ff5555; }
.line.warn { color: #ffb86c; }
.line.input-echo { color: rgba(0,255,65,0.45); }
.line.blank { height: 0.3em; display: block; }
.line.separator { color: var(--term-green-faint); opacity: 0.5; }
.line.accent { color: #7fff7f; font-weight: 700; }

.terminal-input-row {
  display: flex;
  align-items: center;
  margin-top: 0.25rem;
  padding-bottom: 2rem;
}

.prompt { color: var(--term-green); white-space: nowrap; flex-shrink: 0; user-select: none; }
.prompt .prompt-user { color: #90ff90; }
.prompt .prompt-at { color: var(--term-green-dim); }
.prompt .prompt-host { color: var(--term-green); }
.prompt .prompt-dollar { color: var(--term-green-dim); }

.input-area {
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
}

#inputBefore, #inputAfter { color: var(--term-green); white-space: pre; }

.cursor {
  color: var(--term-green);
  animation: blink 1s step-end infinite;
  font-weight: 400;
  line-height: 1;
}

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

#terminalInput {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  left: -9999px;
  top: -9999px;
  pointer-events: none;
}

/* ===== ATHLETIC SECTION ===== */

#athleticSection { background: var(--ath-bg); color: var(--ath-text); }

/* Overview */
.overview-header {
  padding: 2.5rem 2rem 0;
  max-width: 1100px;
  margin: 0 auto;
}

.overview-name {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--ath-text);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.overview-goes-by { font-size: 1rem; color: var(--ath-muted); margin-bottom: 0.4rem; }
.overview-goes-by span { color: var(--ath-gold); font-weight: 600; }
.overview-loc { font-size: 0.85rem; color: var(--ath-muted); margin-bottom: 0; }

.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 1.1rem;
  padding: 1.75rem 2rem 3rem;
  max-width: 1100px;
  margin: 0 auto;
}

.stat-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--ath-border);
  border-radius: 14px;
  padding: 1.4rem;
  transition: transform 0.25s var(--ease), border-color 0.25s, background 0.25s;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  border-radius: 14px 14px 0 0;
  opacity: 0;
  transition: opacity 0.3s;
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: rgba(226,160,74,0.2);
  background: rgba(255,255,255,0.05);
}

.stat-card:hover::before { opacity: 1; }

.card-tennis::before { background: linear-gradient(90deg, #e2a04a, #38bdf8); }
.card-tkd::before { background: linear-gradient(90deg, #000, #e2a04a); }
.card-guitar::before { background: linear-gradient(90deg, #a78bfa, #e2a04a); }
.card-skate::before { background: linear-gradient(90deg, #34d399, #38bdf8); }
.card-swim::before { background: linear-gradient(90deg, #38bdf8, #818cf8); }
.card-yt::before { background: linear-gradient(90deg, #f87171, #fb923c); }

.stat-card-icon { font-size: 2rem; margin-bottom: 0.75rem; display: block; }
.stat-card-title { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--ath-muted); margin-bottom: 0.35rem; }
.stat-card-value { font-size: 1.1rem; font-weight: 700; color: var(--ath-text); margin-bottom: 0.4rem; }
.stat-card-desc { font-size: 0.8rem; color: var(--ath-muted); line-height: 1.6; }

/* Tennis */
.tennis-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.25rem 1rem 2rem;
  min-height: calc(100vh - 56px);
  gap: 0.75rem;
}

#scoreBoard {
  background: rgba(15,23,42,0.95);
  border: 1px solid rgba(56,189,248,0.15);
  border-radius: 12px;
  padding: 0.85rem 2rem;
  display: flex;
  gap: 2.5rem;
  align-items: center;
  font-family: 'Inter', sans-serif;
  min-width: 320px;
}

.score-player { text-align: center; flex: 1; }
.score-name { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--ath-muted); margin-bottom: 0.2rem; }
.score-pts { font-size: 2rem; font-weight: 900; color: var(--ath-text); line-height: 1; }
.score-games { font-size: 0.72rem; color: var(--ath-blue); margin-top: 0.15rem; }

.score-divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  flex-shrink: 0;
}

.set-scores { font-size: 0.72rem; color: var(--ath-muted); text-align: center; min-height: 1em; }
.score-vs { font-size: 0.65rem; letter-spacing: 0.2em; color: var(--ath-muted); opacity: 0.5; }

#gameStatus {
  font-size: 0.82rem;
  color: var(--ath-gold);
  letter-spacing: 0.08em;
  font-weight: 600;
  min-height: 1.25rem;
  text-align: center;
}

#tennisCanvas {
  border: 1px solid rgba(56,189,248,0.15);
  border-radius: 8px;
  max-width: 100%;
  display: block;
  touch-action: none;
}

#commentary {
  font-size: 0.82rem;
  color: var(--ath-muted);
  font-style: italic;
  min-height: 1.5rem;
  text-align: center;
  max-width: 500px;
}

#tennisControls {
  font-size: 0.7rem;
  color: rgba(148,163,184,0.45);
  text-align: center;
  letter-spacing: 0.04em;
}

/* Martial Arts */
.martial-content {
  max-width: 680px;
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
}

.martial-header { margin-bottom: 1.5rem; }

.belt-display { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.belt-icon { font-size: 3rem; }
.belt-rank {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ath-gold);
  font-weight: 700;
  background: rgba(226,160,74,0.1);
  border: 1px solid rgba(226,160,74,0.2);
  border-radius: 4px;
  padding: 0.3rem 0.75rem;
}

.martial-title { font-size: 2.5rem; font-weight: 900; color: var(--ath-text); margin-bottom: 0.25rem; }
.martial-subtitle { color: var(--ath-muted); font-size: 0.9rem; margin-bottom: 1.5rem; }

.martial-body { color: var(--ath-muted); line-height: 1.85; font-size: 0.93rem; margin-bottom: 2rem; }

.kick-animation-wrapper {
  display: flex;
  justify-content: center;
  margin: 2.5rem 0;
  padding: 1.5rem;
  background: rgba(255,255,255,0.02);
  border-radius: 16px;
  border: 1px solid var(--ath-border);
}

/* Kick figure animation */
.kick-leg-up { transform-origin: 100px 130px; animation: kick-anim 1.4s ease-in-out infinite; }
.kick-foot { transform-origin: 145px 105px; animation: kick-foot-anim 1.4s ease-in-out infinite; }
.impact-1, .impact-2, .impact-3 { animation: impact-anim 1.4s ease-in-out infinite; }

@keyframes kick-anim {
  0%,100% { transform: rotate(0deg); }
  40% { transform: rotate(-25deg); }
  55% { transform: rotate(5deg); }
  70% { transform: rotate(0deg); }
}

@keyframes kick-foot-anim {
  0%,100% { transform: rotate(0deg); }
  40% { transform: rotate(15deg); }
}

@keyframes impact-anim {
  0%,50%,100% { opacity: 0; }
  55%,65% { opacity: 1; }
}

.martial-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.martial-stat {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--ath-border);
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mstat-label { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ath-muted); }
.mstat-val { font-size: 0.9rem; font-weight: 600; color: var(--ath-text); }

/* Music & More */
.music-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
}

.music-section-title { font-size: 2rem; font-weight: 900; color: var(--ath-text); margin-bottom: 0.3rem; }
.music-section-sub { color: var(--ath-muted); font-size: 0.88rem; margin-bottom: 1.75rem; }

.music-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.music-card {
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--ath-border);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: transform 0.25s, border-color 0.25s, background 0.25s;
  position: relative;
  overflow: hidden;
}

.music-card:hover {
  transform: translateY(-3px);
  border-color: rgba(56,189,248,0.2);
  background: rgba(255,255,255,0.045);
}

.music-card-icon { font-size: 1.75rem; }
.music-card-title { font-size: 0.9rem; font-weight: 600; color: var(--ath-text); }
.music-card-desc { font-size: 0.77rem; color: var(--ath-muted); line-height: 1.55; flex: 1; }

.music-card-tag {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ath-blue);
  background: rgba(56,189,248,0.08);
  border-radius: 4px;
  padding: 0.15rem 0.45rem;
  align-self: flex-start;
  margin-top: 0.25rem;
}

.vibe-title { font-size: 1.1rem; font-weight: 700; color: var(--ath-text); margin-bottom: 1rem; }

.vibe-blocks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.vibe-block {
  background: rgba(var(--c-raw, 226,160,74), 0.08);
  border: 1px solid color-mix(in srgb, var(--c) 30%, transparent);
  border-color: var(--c);
  border-opacity: 0.2;
  color: var(--c);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  transition: all 0.2s;
  border: 1px solid;
  border-color: color-mix(in srgb, var(--c) 25%, transparent);
  background: color-mix(in srgb, var(--c) 8%, transparent);
}

.vibe-block:hover {
  background: color-mix(in srgb, var(--c) 16%, transparent);
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  #landing { flex-direction: column; }

  .split-divider {
    position: absolute;
    left: 0; right: 0;
    top: 50%; bottom: auto;
    width: auto; height: 1px;
    background: linear-gradient(90deg,
      transparent 0%,
      rgba(0,255,65,0.3) 30%,
      rgba(56,189,248,0.3) 70%,
      transparent 100%);
    transform: translateY(-50%);
  }

  .athletic-nav { gap: 0.5rem; }
  .athletic-tabs { gap: 0.1rem; }
  .tab-btn { padding: 0.3rem 0.6rem; font-size: 0.72rem; }

  .overview-grid { padding: 1.25rem 1rem 2rem; gap: 0.85rem; }
  .overview-header { padding: 1.75rem 1rem 0; }
  .overview-name { font-size: 2rem; }

  #terminal { padding: 1rem 1rem 5rem; font-size: 0.78rem; padding-top: calc(56px + 1rem); }

  .music-grid { grid-template-columns: 1fr 1fr; }
  .martial-stats { grid-template-columns: 1fr 1fr; }
  .martial-content { padding: 1.75rem 1rem 3rem; }

  .score-board { padding: 0.75rem 1.25rem; gap: 1.5rem; }

  #scoreBoard { min-width: unset; width: 100%; max-width: 400px; padding: 0.75rem 1.25rem; gap: 1.5rem; }
}

@media (max-width: 480px) {
  .split-label { font-size: 2.2rem; }
  .overview-grid { grid-template-columns: 1fr; }
  .music-grid { grid-template-columns: 1fr; }
  .martial-stats { grid-template-columns: 1fr 1fr; }
  .music-content, .martial-content { padding: 1.5rem 1rem 3rem; }

  #scoreBoard { gap: 1rem; }
  .score-pts { font-size: 1.5rem; }

  .athletic-nav { padding: 0.75rem 0.75rem; }
  .nav-logo { display: none; }
}