/* ============================================================
   VARIABLES & RESET
============================================================ */
:root {
  --bg:        #0a0b0f;
  --bg-2:      #0f1117;
  --bg-card:   #13151f;
  --bg-card-2: #1a1d2b;
  --border:    #1e2235;
  --border-2:  #252840;

  --green:     #6ee7b7;
  --green-dim: #1a3d30;
  --blue:      #93c5fd;
  --blue-dim:  #1a2d4a;
  --pink:      #f9a8d4;
  --pink-dim:  #3d1a2d;
  --red:       #f87171;
  --red-dim:   #3d1a1a;
  --yellow:    #fde68a;

  --text:      #e2e8f0;
  --text-2:    #94a3b8;
  --text-3:    #4a5568;

  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --radius:    12px;
  --radius-sm: 8px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);

  --accent:    #6ee7b7; /* overridden per section */
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ============================================================
   HEADER
============================================================ */
.site-header {
  position: relative;
  padding: 4rem 2rem 3rem;
  text-align: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.header-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.4;
}

.header-glow {
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(110,231,183,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.header-inner {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
}

.badge {
  display: inline-block;
  background: var(--green-dim);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.3rem 0.9rem;
  border-radius: 20px;
  border: 1px solid rgba(110,231,183,0.25);
  margin-bottom: 1.5rem;
  animation: fadeDown 0.6s ease;
}

.header-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 0.75rem;
  animation: fadeDown 0.7s ease;
}

.title-bracket {
  color: var(--green);
  font-weight: 400;
}

.header-subtitle {
  font-size: 1rem;
  color: var(--text-2);
  margin-bottom: 2.5rem;
  animation: fadeDown 0.8s ease;
}

/* Presenters */
.presenters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeDown 0.9s ease;
}

.presenter {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  transition: transform 0.2s;
}
.presenter:hover { transform: translateY(-2px); }

.presenter-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 2px solid var(--c, #6ee7b7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--c, #6ee7b7);
  box-shadow: 0 0 16px color-mix(in srgb, var(--c, #6ee7b7) 30%, transparent);
}

.presenter-info {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.presenter-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
}

.presenter-role {
  font-size: 0.72rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.presenter-arrow {
  color: var(--text-3);
  font-size: 1.2rem;
}

/* ============================================================
   NAVIGATION
============================================================ */
.tab-nav {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  overflow-x: auto;
}

.tab-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 0.9rem 1.5rem;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  color: var(--text-3);
  transition: all 0.25s ease;
  white-space: nowrap;
  margin-bottom: -1px;
}

.tab-btn:hover {
  color: var(--text);
  background: rgba(255,255,255,0.03);
}

.tab-btn.active {
  color: #fff;
  border-bottom-color: var(--green);
}

.tab-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--green);
  letter-spacing: 0.1em;
}

.tab-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
}

.tab-presenter {
  font-size: 0.7rem;
  opacity: 0.5;
}

.objeto-status {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0 1rem;
  background: var(--green-dim);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(110,231,183,0.2);
  height: 32px;
  white-space: nowrap;
}

.objeto-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}

#objetoLabel {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--green);
}

/* ============================================================
   MAIN CONTENT
============================================================ */
.main-content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
}

/* ── Sections ── */
.tab-section {
  display: none;
  animation: fadeIn 0.35s ease;
}
.tab-section.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Section Header ── */
.section-header {
  margin-bottom: 2rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
  margin-bottom: 0.75rem;
  opacity: 0.85;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.5rem;
}

.section-desc {
  color: var(--text-2);
  max-width: 600px;
}

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  transition: border-color 0.25s;
}
.card:hover { border-color: var(--border-2); }

.card-highlight {
  border-color: rgba(110,231,183,0.25);
  background: linear-gradient(135deg, var(--bg-card), rgba(110,231,183,0.04));
}

.card-state {
  border-color: rgba(147,197,253,0.2);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
}

.card-desc {
  color: var(--text-2);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.card-desc.small { font-size: 0.82rem; }

.sub-title {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  margin: 1.5rem 0 0.5rem;
  font-size: 0.95rem;
}

/* ── Code blocks ── */
.code-block {
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #a5b4fc;
  overflow-x: auto;
  line-height: 1.7;
  margin: 0.75rem 0;
  white-space: pre;
}
.code-block.mini { padding: 0.6rem 1rem; font-size: 0.72rem; }
.code-block.ts { color: #93c5fd; }

.code-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-3);
  margin-bottom: 0.25rem;
}

.code-generated {
  margin-top: 1rem;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--green-dim);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
}
.code-generated pre {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--green);
  white-space: pre;
  overflow-x: auto;
  line-height: 1.8;
}

/* ── Forms ── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.form-grid.mini { margin: 1rem 0; }

.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field-group label {
  font-size: 0.78rem;
  color: var(--text-2);
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.field-type {
  color: var(--text-3);
  font-size: 0.68rem;
  background: rgba(255,255,255,0.04);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}

input[type="text"],
input[type="number"],
select {
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.5rem 0.75rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}
input:focus, select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(110,231,183,0.1);
}
select option { background: var(--bg-2); }

.input-sm {
  width: auto;
  max-width: 160px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--green);
  color: #0a0f1a;
  border-color: var(--green);
}
.btn-primary:hover {
  background: #4ade80;
  border-color: #4ade80;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(110,231,183,0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border-2);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--text-3);
}

.btn-ghost {
  background: transparent;
  color: var(--text-3);
  border-color: var(--border);
  font-size: 0.78rem;
  padding: 0.3rem 0.8rem;
}
.btn-ghost:hover { color: var(--text); }

.btn-sm {
  padding: 0.35rem 0.9rem;
  font-size: 0.78rem;
}

.btn-attack {
  background: linear-gradient(135deg, #ef4444, #b91c1c);
  color: #fff;
  border-color: #dc2626;
  padding: 0.75rem 2.5rem;
  font-size: 1.1rem;
}
.btn-attack:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(239,68,68,0.35);
}
.btn-attack:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ── Outputs ── */
.output {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  border: 1px solid;
  line-height: 1.6;
}
.output.hidden { display: none; }
.output.success {
  background: rgba(110,231,183,0.08);
  border-color: rgba(110,231,183,0.3);
  color: var(--green);
}
.output.error {
  background: rgba(248,113,113,0.08);
  border-color: rgba(248,113,113,0.3);
  color: var(--red);
}
.output.info {
  background: rgba(147,197,253,0.08);
  border-color: rgba(147,197,253,0.3);
  color: var(--blue);
}
.output.warning {
  background: rgba(253,230,138,0.08);
  border-color: rgba(253,230,138,0.3);
  color: var(--yellow);
}

.output-inline {
  display: inline-block;
  margin: 0.75rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  background: rgba(110,231,183,0.08);
  border: 1px solid rgba(110,231,183,0.25);
  color: var(--green);
}
.output-inline.hidden { display: none; }

/* ── Compare grid ── */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0.75rem;
}
@media (max-width: 600px) { .compare-grid { grid-template-columns: 1fr; } }

.compare-box {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid;
}
.compare-bad { border-color: rgba(248,113,113,0.3); }
.compare-good { border-color: rgba(110,231,183,0.3); }

.compare-label {
  padding: 0.4rem 1rem;
  font-size: 0.78rem;
  font-weight: 600;
}
.compare-bad .compare-label { background: rgba(248,113,113,0.1); color: var(--red); }
.compare-good .compare-label { background: rgba(110,231,183,0.1); color: var(--green); }

/* ── Notation grid ── */
.notation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0.5rem;
}
@media (max-width: 600px) { .notation-grid { grid-template-columns: 1fr; } }

.notation-box {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
}

.notation-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--blue);
  margin-bottom: 0.75rem;
}

.notation-demo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

/* ── Estado del objeto ── */
.estado-box {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--blue);
  min-height: 80px;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.75rem;
  line-height: 1.8;
}
.estado-empty { color: var(--text-3); font-style: italic; font-family: var(--font-body); }

.estado-key { color: var(--blue); }
.estado-val { color: var(--green); }
.estado-label { color: var(--text-3); }

/* ── Methods grid ── */
.methods-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 0.75rem;
}
@media (max-width: 700px) { .methods-grid { grid-template-columns: 1fr; } }

.method-box {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.method-name {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--blue);
  font-weight: 700;
}
.method-desc { font-size: 0.8rem; color: var(--text-2); }

/* ── TypeScript tabs ── */
.ts-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
@media (max-width: 600px) { .ts-tabs { grid-template-columns: 1fr; } }

.ts-panel { display: flex; flex-direction: column; gap: 0.3rem; }
.ts-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.ts-validator {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
  margin-bottom: 0.75rem;
}
.ts-validator select, .ts-validator input { width: auto; max-width: 200px; }

/* ============================================================
   BATTLE ARENA
============================================================ */
.battle-arena {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: center;
  margin-bottom: 1.5rem;
}
@media (max-width: 700px) {
  .battle-arena { grid-template-columns: 1fr; }
  .vs-center { order: -1; text-align: center; }
}

.combatant-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.combatant-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--green);
}
.enemy-card::before { background: var(--red); }

.combatant-side {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--text-3);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.combatant-avatar {
  font-size: 3rem;
  margin-bottom: 0.75rem;
  display: block;
  transition: transform 0.2s;
}
.hero-avatar { filter: drop-shadow(0 0 12px rgba(110,231,183,0.5)); }
.enemy-avatar { filter: drop-shadow(0 0 12px rgba(248,113,113,0.5)); }

.combatant-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 0.2rem;
}
.combatant-clase {
  font-size: 0.75rem;
  color: var(--text-3);
  margin-bottom: 1rem;
}

/* Vida bars */
.vida-section { margin-bottom: 1rem; }

.vida-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
  margin-bottom: 0.3rem;
}

.vida-bar-track {
  background: rgba(255,255,255,0.06);
  border-radius: 20px;
  height: 10px;
  overflow: hidden;
}

.vida-bar {
  height: 100%;
  border-radius: 20px;
  transition: width 0.5s ease, background 0.5s;
}
.hero-bar { background: linear-gradient(90deg, #6ee7b7, #34d399); }
.enemy-bar { background: linear-gradient(90deg, #f87171, #ef4444); }

.combatant-stats {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}
.stat { display: flex; flex-direction: column; align-items: center; gap: 0.1rem; }
.stat-label { font-size: 0.65rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.1em; }
.stat-val { font-family: var(--font-mono); font-weight: 700; font-size: 1rem; color: #fff; }

/* VS Center */
.vs-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.vs-badge {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--bg-card-2);
  border: 2px solid var(--border-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--text-2);
}

.battle-log-mini {
  font-size: 0.72rem;
  color: var(--text-3);
  text-align: center;
  max-width: 100px;
  line-height: 1.5;
  font-style: italic;
}

/* Battle controls */
.battle-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

/* Battle log */
.battle-log {
  max-height: 220px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.25rem 0;
}

.log-entry {
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  border-left: 3px solid;
  animation: slideIn 0.3s ease;
}
@keyframes slideIn {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}

.log-info {
  border-color: var(--blue);
  background: rgba(147,197,253,0.06);
  color: var(--blue);
}
.log-attack {
  border-color: var(--green);
  background: rgba(110,231,183,0.06);
  color: var(--green);
}
.log-enemy {
  border-color: var(--red);
  background: rgba(248,113,113,0.06);
  color: var(--red);
}
.log-win {
  border-color: var(--yellow);
  background: rgba(253,230,138,0.06);
  color: var(--yellow);
}

/* Dual code */
.code-dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
@media (max-width: 600px) { .code-dual { grid-template-columns: 1fr; } }

.accent-green { color: var(--green); }
.accent-blue { color: var(--blue); }
.accent-red { color: var(--red); }

/* ============================================================
   BATTLE OVERLAY
============================================================ */
.battle-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.battle-overlay.hidden { display: none; }

.overlay-box {
  background: var(--bg-card);
  border: 1px solid var(--border-2);
  border-radius: 20px;
  padding: 3rem;
  text-align: center;
  max-width: 400px;
  animation: popIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes popIn {
  from { opacity: 0; transform: scale(0.7); }
  to   { opacity: 1; transform: scale(1); }
}

.overlay-emoji { font-size: 4rem; margin-bottom: 1rem; display: block; }
.overlay-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.5rem;
}
.overlay-subtitle {
  color: var(--text-2);
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

/* ============================================================
   FOOTER
============================================================ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
  text-align: center;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-size: 0.78rem;
  color: var(--text-3);
  font-family: var(--font-mono);
}
.footer-sep { color: var(--border-2); }

/* ============================================================
   ANIMATIONS
============================================================ */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.shake {
  animation: shake 0.4s ease;
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25%       { transform: translateX(-6px); }
  75%       { transform: translateX(6px); }
}

.flash-hit {
  animation: flashHit 0.3s ease;
}
@keyframes flashHit {
  0%   { opacity: 1; }
  50%  { opacity: 0.3; }
  100% { opacity: 1; }
}

/* ============================================================
   SCROLLBAR
============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* ============================================================
   RESPONSIVE
============================================================ */
@media (max-width: 768px) {
  .main-content { padding: 1.5rem 1rem 3rem; }
  .tab-nav { padding: 0 0.5rem; }
  .tab-btn { padding: 0.7rem 1rem; }
  .battle-arena { gap: 1rem; }
}