/* ═══════════════════════════════════════════════════════════════════════════
   style.css — Trader Arena: Batalha da Bolsa
   Identidade visual: Matemática & Tecnologias Digitais — UFPR
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Tokens ──────────────────────────────────────────────────────────────── */
:root {
  --bg:          #060610;
  --surface:     #0c0c1e;
  --surface2:    #12122a;
  --border:      #1e1e3a;
  --gold:        #f59e0b;
  --gold-dim:    rgba(245,158,11,0.12);
  --gold-glow:   rgba(245,158,11,0.35);
  --green:       #10b981;
  --green-dim:   rgba(16,185,129,0.12);
  --green-glow:  rgba(16,185,129,0.35);
  --red:         #f43f5e;
  --purple:      #8b5cf6;
  --purple-l:    #a78bfa;
  --purple-dim:  rgba(139,92,246,0.15);
  /* alias for chart.js compat */
  --cyan:        #10b981;
  --cyan-dim:    rgba(16,185,129,0.12);
  --cyan-glow:   rgba(16,185,129,0.35);
  --text:        #f1f5f9;
  --muted:       #94a3b8;
  --dim:         #3f3f60;
  --radius:      12px;
  --radius-sm:   8px;
}

/* ── Reset ───────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Outfit', system-ui, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── Grid de fundo ───────────────────────────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.28;
  pointer-events: none;
  z-index: 0;
}

/* ── Glow radial dourado ─────────────────────────────────────────────────── */
body::after {
  content: '';
  position: fixed;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 900px; height: 500px;
  background: radial-gradient(ellipse at top, rgba(245,158,11,0.07), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── Screens ─────────────────────────────────────────────────────────────── */
.screen {
  display: none;
  width: 100%;
  max-width: 960px;
  min-height: 100vh;
  padding: 32px 24px;
  position: relative;
  z-index: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
}
.screen.active { display: flex; }

/* ══════════════════════════════════════════════════════════════════════════
   TELA 1 — BOAS-VINDAS
   ══════════════════════════════════════════════════════════════════════════ */

.logo-container {
  text-align: center;
}

.logo-eyebrow {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.logo-title {
  font-family: 'Bebas Neue', cursive;
  font-size: clamp(3.5rem, 10vw, 6.5rem);
  letter-spacing: 4px;
  line-height: 0.9;
  background: linear-gradient(135deg, var(--gold) 30%, var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 24px rgba(245,158,11,0.3));
}

.logo-sub {
  font-family: 'Bebas Neue', cursive;
  font-size: 0.95rem;
  color: var(--muted);
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-top: 10px;
}

/* Welcome form */
.welcome-form {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.welcome-form label {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  font-weight: 600;
}

.input-wrap { position: relative; }

.input-name {
  width: 100%;
  padding: 14px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 1rem;
  font-family: 'Outfit', sans-serif;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-name:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-dim);
}

.input-name::placeholder { color: var(--dim); }

.error-msg {
  font-size: 0.78rem;
  color: var(--red);
  min-height: 18px;
}

/* Como jogar */
.how-to-play {
  width: 100%;
  max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.how-to-title {
  font-family: 'Bebas Neue', cursive;
  font-size: 0.85rem;
  letter-spacing: 3px;
  color: var(--gold);
  margin-bottom: 12px;
}

.how-to-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.how-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

.how-step strong { color: var(--green); }

.step-num {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--gold-dim);
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 0.72rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

/* Mini leaderboard na welcome */
.mini-board {
  width: 100%;
  max-width: 420px;
}

.mini-board-title {
  font-family: 'Bebas Neue', cursive;
  font-size: 0.82rem;
  color: var(--gold);
  letter-spacing: 3px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.mini-board-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  margin-bottom: 6px;
  font-size: 0.85rem;
  transition: border-color 0.2s;
}

.mini-board-row:hover { border-color: var(--gold); }

.mini-board-row .mb-medal {
  font-size: 1.1rem;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}

.mini-board-row .mb-name { flex: 1; color: var(--text); font-weight: 600; }
.mini-board-row .mb-lucro { color: var(--green); font-weight: 700; font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; }

.mini-board-empty {
  text-align: center;
  color: var(--dim);
  font-size: 0.85rem;
  padding: 16px;
}

.mini-board-challenge {
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 8px;
  letter-spacing: 0.5px;
}

/* ══════════════════════════════════════════════════════════════════════════
   TELA 2 — GAMEPLAY
   ══════════════════════════════════════════════════════════════════════════ */

.game-layout {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 300px;
  grid-template-rows: auto 1fr;
  gap: 20px;
}

.game-header {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.game-player-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--gold-dim);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: 99px;
  padding: 6px 14px;
}

.player-label {
  font-family: 'Bebas Neue', cursive;
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--gold);
}

.game-player-tag span:last-child {
  color: var(--text);
  font-weight: 700;
  font-size: 0.9rem;
}

/* Gráfico */
.chart-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  position: relative;
  min-height: 340px;
}

#mainChart,
#resultChart {
  width: 100% !important;
  height: 100% !important;
  display: block;
  border-radius: var(--radius-sm);
}

.chart-legend {
  display: flex;
  gap: 16px;
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--muted);
}

.legend-item { display: flex; align-items: center; gap: 6px; }

.legend-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Painel de controle */
.control-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel-section { display: flex; flex-direction: column; gap: 10px; }

.panel-label {
  font-family: 'Bebas Neue', cursive;
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 2px;
}

/* Equation box */
.equation-box {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  color: var(--gold);
  text-align: center;
  letter-spacing: 0.5px;
}

/* Sliders */
.slider-group { display: flex; flex-direction: column; gap: 6px; }

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.slider-name {
  font-size: 0.82rem;
  color: var(--text);
  font-weight: 600;
}

.slider-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gold);
  font-family: 'JetBrains Mono', monospace;
  min-width: 60px;
  text-align: right;
}

.slider-hint {
  font-size: 0.7rem;
  color: var(--dim);
  margin-top: -2px;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--dim);
  border-radius: 99px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 8px var(--gold-glow);
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.25);
  box-shadow: 0 0 16px var(--gold-glow);
}

input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--gold);
  border: none;
  box-shadow: 0 0 8px var(--gold-glow);
  cursor: pointer;
}

/* EQM display */
.eqm-display {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.eqm-label { font-size: 0.82rem; color: var(--text); font-weight: 600; }
.eqm-hint  { font-size: 0.68rem; color: var(--dim); margin-top: 2px; }
.eqm-value { font-size: 1.2rem; font-weight: 700; color: var(--purple-l); font-family: 'JetBrains Mono', monospace; }

/* Countdown */
.confirm-hint {
  font-size: 0.75rem;
  color: var(--dim);
  text-align: center;
  min-height: 18px;
}

.btn-confirm {
  font-size: 1.1rem !important;
  letter-spacing: 2px;
}

/* ══════════════════════════════════════════════════════════════════════════
   TELA 3 — RESULTADO
   ══════════════════════════════════════════════════════════════════════════ */

.result-title-main {
  font-family: 'Bebas Neue', cursive !important;
  font-size: 2.2rem !important;
  letter-spacing: 3px;
}

.result-layout {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 24px;
  align-items: start;
}

.result-cards {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  opacity: 0;
  transform: translateY(20px);
}

.rc-destaque {
  border-color: rgba(16,185,129,0.35);
  background: linear-gradient(135deg, rgba(16,185,129,0.08), var(--surface));
}

.rc-label {
  font-family: 'Bebas Neue', cursive;
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 2px;
}

.rc-value {
  font-family: 'Bebas Neue', cursive;
  font-size: 2.4rem;
  letter-spacing: 1px;
  line-height: 1;
}

.rc-eqm   { color: var(--purple-l); }
.rc-lucro { color: var(--green); }
.rc-rank  { color: var(--gold); }

.rc-sub {
  font-size: 0.78rem;
  color: var(--dim);
}

.result-legend {
  display: flex;
  gap: 16px;
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--muted);
  flex-wrap: wrap;
}

/* ══════════════════════════════════════════════════════════════════════════
   TELA 4 — LEADERBOARD
   ══════════════════════════════════════════════════════════════════════════ */

.leaderboard-wrap {
  width: 100%;
  max-width: 700px;
}

.lb-header {
  text-align: center;
  margin-bottom: 28px;
}

.lb-title {
  font-family: 'Bebas Neue', cursive;
  font-size: 3rem;
  letter-spacing: 6px;
  background: linear-gradient(135deg, var(--gold), var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 16px rgba(245,158,11,0.3));
}

.lb-sub {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.lb-pulse {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse-dot 1.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.6); }
}

/* Pódio */
.lb-podium {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 10px;
  margin-bottom: 28px;
  min-height: 160px;
}

.podium-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 16px 12px 0;
  border-radius: 10px 10px 0 0;
  width: 180px;
  position: relative;
  overflow: hidden;
}

.podium-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
}

.podium-card.rank-1 {
  height: 160px;
  background: linear-gradient(160deg, rgba(245,158,11,0.18), rgba(245,158,11,0.04));
  border: 1px solid rgba(245,158,11,0.4);
  border-bottom: none;
}
.podium-card.rank-1::before { background: var(--gold); }

.podium-card.rank-2 {
  height: 125px;
  background: linear-gradient(160deg, rgba(148,163,184,0.12), rgba(148,163,184,0.03));
  border: 1px solid rgba(148,163,184,0.25);
  border-bottom: none;
}
.podium-card.rank-2::before { background: #c0c0c0; }

.podium-card.rank-3 {
  height: 105px;
  background: linear-gradient(160deg, rgba(205,127,50,0.12), rgba(205,127,50,0.03));
  border: 1px solid rgba(205,127,50,0.25);
  border-bottom: none;
}
.podium-card.rank-3::before { background: #cd7f32; }

.podium-card.is-you {
  box-shadow: inset 0 0 0 1px rgba(245,158,11,0.5), 0 0 20px rgba(245,158,11,0.1);
}

.podium-medal {
  font-size: 1.6rem;
  line-height: 1;
  margin-bottom: 6px;
}

.podium-name {
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--text);
  text-align: center;
  word-break: break-word;
  line-height: 1.3;
  margin-bottom: 4px;
}

.podium-lucro {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--green);
}

.podium-eqm {
  font-size: 0.68rem;
  color: var(--dim);
  margin-top: 2px;
}

.you-tag {
  display: inline-block;
  background: var(--gold-dim);
  color: var(--gold);
  border-radius: 4px;
  font-size: 0.62rem;
  padding: 1px 5px;
  margin-left: 4px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

/* Tabela restante (4º+) */
.lb-rest { margin-top: 4px; }

.lb-table {
  width: 100%;
  border-collapse: collapse;
}

.lb-table thead th {
  padding: 10px 16px;
  font-family: 'Bebas Neue', cursive;
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 2px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.lb-table th:last-child,
.lb-table td:last-child { text-align: right; }

.lb-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
}

.lb-table tbody tr:hover { background: var(--surface2); }

.lb-table td {
  padding: 13px 16px;
  font-size: 0.9rem;
}

.lb-rank-cell { width: 40px; }

.lb-rank-badge {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  background: var(--surface2);
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
}

.lb-name { color: var(--text); font-weight: 600; }

.lb-eqm {
  color: var(--purple-l);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
}

.lb-lucro {
  color: var(--green);
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
}

.lb-table tbody tr.current-player {
  background: var(--gold-dim) !important;
  border-left: 2px solid var(--gold);
}

.lb-table tbody tr.current-player .lb-name::after {
  content: ' ← você';
  font-size: 0.72rem;
  color: var(--gold);
  margin-left: 6px;
}

.lb-empty {
  text-align: center;
  color: var(--dim);
  padding: 40px;
  font-size: 0.9rem;
}

/* ══════════════════════════════════════════════════════════════════════════
   BOTÕES
   ══════════════════════════════════════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  border: none;
  font-family: 'Bebas Neue', cursive;
  font-size: 1rem;
  letter-spacing: 2px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.2s;
  width: 100%;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--green));
  color: #000;
  box-shadow: 0 0 20px rgba(245,158,11,0.2);
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 0 36px rgba(245,158,11,0.45);
  transform: translateY(-2px);
}

.btn-primary:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.btn-pulse {
  animation: btn-pulse 1.4s ease-in-out infinite;
}

@keyframes btn-pulse {
  0%, 100% { box-shadow: 0 0 20px rgba(245,158,11,0.2); }
  50%       { box-shadow: 0 0 44px rgba(245,158,11,0.55), 0 0 70px rgba(16,185,129,0.2); }
}

/* ══════════════════════════════════════════════════════════════════════════
   UTILITÁRIOS
   ══════════════════════════════════════════════════════════════════════════ */

.section-title {
  font-family: 'Bebas Neue', cursive;
  font-size: 1.5rem;
  letter-spacing: 2px;
  color: var(--text);
  margin-bottom: 4px;
}

.section-sub {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.divider {
  width: 100%;
  height: 1px;
  background: var(--border);
}

/* ── Responsividade ──────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .screen { padding: 24px 16px; }

  .game-layout {
    grid-template-columns: 1fr;
  }

  .game-header {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }

  .result-layout {
    grid-template-columns: 1fr;
  }

  .chart-wrap {
    min-height: 240px;
  }

  .logo-title { font-size: 3.5rem; }

  .lb-podium { gap: 6px; }
  .podium-card { width: 100px; }
  .podium-name { font-size: 0.72rem; }
  .podium-lucro { font-size: 0.72rem; }

  /* Tabela do ranking não estoura a largura no celular */
  .lb-table td, .lb-table th { padding: 10px 8px; font-size: 0.82rem; }

  /* Alvo de toque maior para os sliders no celular */
  input[type="range"] {
    height: 8px;
    padding: 14px 0;
    background-clip: content-box;
  }
  input[type="range"]::-webkit-slider-thumb { width: 26px; height: 26px; }
  input[type="range"]::-moz-range-thumb { width: 26px; height: 26px; }
}

/* Sliders respondem ao arraste por toque sem rolar a página */
input[type="range"] { touch-action: none; }

/* ── Scrollbar ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--dim); border-radius: 99px; }