/* =========================================================
   CHESS PRO v2 — Estilos Globales
   Paleta: Institucional (Formando Capital Humano)
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Lora:wght@700&family=Montserrat:wght@400;500;600;700&display=swap');

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

:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --surface2: #E7EAF2;
  --border: #e2e8f0;
  
  /* Azul principal institucional */
  --primary: #232D4F;         
  --primary-hover: #171e36;
  
  --secondary: #1D2445;
  --accent: #F3B44C;          /* Dorado */
  
  --green: #008037;           /* Verde institucional (solo para acentos de éxito/online) */
  --green-hover: #00682c;
  
  --text-dark: #232D4F;
  --text-muted: #666666;
  --red: #e05252;
}

body {
  font-family: 'Montserrat', sans-serif;
  background: var(--bg);
  min-height: 100vh;
  color: var(--text-dark);
  padding: 20px;
}

/* --- Típos y Fuentes --- */
h1, h2, h3, .font-lora { font-family: 'Lora', serif; }

/* --- Componentes Comunes --- */
.card {
  background: var(--surface);
  border-radius: 18px;
  padding: 32px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.btn {
  padding: 12px;
  border: none;
  border-radius: 25px;
  font-family: 'Montserrat', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
  text-align: center;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  width: 100%;
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(35,45,79,0.2);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--surface);
  border-radius: 16px;
  padding: 16px 24px;
  margin-bottom: 24px;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.btn-back {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text-dark);
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: 0.2s;
}
.btn-back:hover { border-color: var(--primary); background: var(--surface2); }

/* --- Formularios --- */
.form-group { margin-bottom: 18px; }
label { display: block; color: var(--text-dark); font-size: 0.85rem; font-weight: 600; margin-bottom: 7px; }
input, select {
  width: 100%;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 25px;
  color: var(--text-dark);
  font-family: 'Montserrat', sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: 0.2s;
}
input:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(35,45,79,.1); }

/* --- Elementos de Login --- */
.login-wrapper { display: flex; align-items: center; justify-content: center; min-height: 90vh; }
.login-card { border-top: 5px solid var(--primary); max-width: 420px; width: 100%; }
.logo { text-align: center; margin-bottom: 32px; }
.logo-icon { font-size: 52px; line-height: 1; display: block; margin-bottom: 12px; color: var(--primary); }
.logo h1 { font-size: 2rem; color: var(--primary); letter-spacing: 1px; }
.logo .sub { color: var(--text-muted); font-size: 0.85rem; font-weight: 500; margin-top: 4px; }
.tabs { display: flex; background: var(--surface2); border-radius: 30px; padding: 4px; margin-bottom: 28px; gap: 4px; }
.tab { flex: 1; padding: 12px; border: none; border-radius: 25px; font-weight: 600; cursor: pointer; background: transparent; color: var(--text-muted); transition: 0.3s; font-family: 'Montserrat';}
.tab.active { background: var(--surface); color: var(--primary); box-shadow: 0 2px 8px rgba(0,0,0,.1); }
.panel { display: none; }
.panel.active { display: block; }
.error { background: rgba(224,82,82,.1); border: 1px solid rgba(224,82,82,.3); color: var(--red); padding: 12px 16px; border-radius: 12px; font-size: 0.85rem; margin-bottom: 16px; font-weight: 500; text-align: center; }

/* --- Elementos Menu & History --- */
.grid-menu { display: grid; grid-template-columns: 1fr 340px; gap: 24px; max-width: 1100px; margin: 0 auto; }
.card-title { font-size: 1.4rem; color: var(--primary); margin-bottom: 24px; display: flex; align-items: center; gap: 10px; font-family: 'Lora', serif; font-weight: 700; }
.mode-toggle { display: flex; background: var(--surface2); border-radius: 14px; padding: 6px; margin-bottom: 24px; gap: 6px; }
.mode-btn { flex: 1; padding: 12px; border: none; border-radius: 10px; font-weight: 600; cursor: pointer; background: transparent; color: var(--text-muted); transition: 0.2s; font-family: 'Montserrat'; font-size: 0.9rem;}
.mode-btn.active { background: var(--primary); color: #fff; box-shadow: 0 4px 10px rgba(35,45,79,0.2); }
.mode-btn small { display: block; font-size: 0.75rem; opacity: 0.8; margin-top: 4px; font-weight: 400; }
.time-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.time-opt { border: 2px solid var(--border); border-radius: 12px; padding: 14px 8px; text-align: center; cursor: pointer; transition: 0.2s; }
.time-opt:hover { border-color: var(--primary); }
.time-opt.active { border-color: var(--primary); background: rgba(35,45,79,0.05); }
.time-opt .mins { font-family: 'Lora', serif; font-size: 1.4rem; font-weight: 700; color: var(--primary); }
.time-opt .label { font-size: 0.75rem; font-weight: 500; color: var(--text-muted); margin-top: 4px; }
.ranking-item { display: flex; align-items: center; padding: 12px 16px; border: 1px solid var(--border); border-radius: 12px; margin-bottom: 10px; transition: 0.2s; background: var(--surface);}
.ranking-item:hover { border-color: var(--accent); }
.rank-num { font-family: 'Lora', serif; font-size: 1.2rem; font-weight: 700; color: var(--accent); width: 40px; }
.rank-name { flex: 1; font-weight: 600; font-size: 0.95rem; }
.rank-wins { font-weight: 700; color: var(--primary); font-size: 0.95rem; }

/* --- Elementos de Partida (Match) --- */
.layout-match { display: grid; grid-template-columns: 1fr 320px; gap: 24px; max-width: 1100px; margin: 0 auto; }
.board-wrap { border-top: 4px solid var(--primary); display: flex; flex-direction: column; align-items: center; }
#board { width: 100%; max-width: 560px; border-radius: 4px; overflow: hidden; box-shadow: 0 8px 24px rgba(0,0,0,.15); touch-action: none; }
.engine-bar { margin-top: 20px; background: var(--surface2); border-radius: 12px; padding: 12px; text-align: center; color: var(--primary); font-size: 0.9rem; font-weight: 600; width: 100%; max-width: 560px; transition: 0.3s; }
.engine-bar.thinking { color: var(--green); background: rgba(0,128,55,0.08); }
.status-card { text-align: center; border-top: 4px solid var(--accent); padding: 24px;}
.turn-pill { display: inline-block; padding: 8px 20px; border-radius: 25px; font-size: 0.85rem; font-weight: 600; transition: 0.3s; }
.turn-pill.white { background: #fff; border: 2px solid #cbd5e1; color: var(--text-dark); }
.turn-pill.black { background: var(--primary); color: #fff; border: 2px solid var(--primary);}
.turn-pill.done { background: var(--accent); color: var(--primary); border: 2px solid var(--accent);}
.player-row { display: flex; align-items: center; gap: 12px; padding: 14px; border: 2px solid var(--border); border-radius: 12px; margin-bottom: 10px; transition: 0.2s; }
.player-row.active { border-color: var(--primary); box-shadow: 0 4px 10px rgba(35,45,79,.1); }
.clock { font-family: 'Lora', serif; font-size: 1.3rem; font-weight: 700; color: var(--primary); min-width: 60px; text-align: right; }
.clock.low { color: var(--red); animation: pulse 1s infinite; }
.clock.inactive { color: var(--text-muted); opacity: 0.6; }
.clock.hidden { display: none; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .5; } }
.moves-box { background: #f8f9fa; border: 1px solid var(--border); border-radius: 12px; padding: 16px; max-height: 180px; overflow-y: auto; font-family: 'Courier New', monospace; font-size: 0.85rem; line-height: 1.8; }
.overlay { display: none; position: fixed; inset: 0; background: rgba(29,36,69,.85); backdrop-filter: blur(4px); z-index: 100; flex-direction: column; align-items: center; justify-content: center; }
.overlay.show { display: flex; }
.result-card { background: var(--surface); border-radius: 24px; padding: 48px 40px; text-align: center; max-width: 400px; width: 90%; box-shadow: 0 16px 48px rgba(0,0,0,.2); }
.badge { background: var(--surface2); color: var(--primary); padding: 6px 14px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; }
.you-tag { background: var(--accent); color: var(--primary); padding: 4px 10px; border-radius: 12px; font-size: 0.75rem; font-weight: 700; }
.ai-tag { background: var(--primary); color: #fff; padding: 4px 10px; border-radius: 12px; font-size: 0.75rem; font-weight: 600; }

/* --- Responsive --- */
@media(max-width: 800px) {
  .grid-menu, .layout-match { grid-template-columns: 1fr; gap: 16px; }
  .board-wrap { padding: 16px; }
}

/* Menu polish */
.grid-menu{grid-template-columns:minmax(0,1fr) 340px;gap:24px;align-items:start;max-width:1180px}
.topbar{max-width:1180px}
.grid-menu>.card{border-top-width:4px!important;padding:34px}
.grid-menu>div:last-child{display:flex;flex-direction:column;gap:24px}
.grid-menu>div:last-child .card{min-height:210px}
.card-title{font-size:1.45rem;margin-bottom:26px}
.mode-toggle{padding:6px;border-radius:14px;gap:6px;margin-bottom:24px}
.mode-btn{min-height:64px;border-radius:10px;font-size:.95rem}
.mode-btn small{font-size:.76rem}
.form-group{margin-bottom:20px}
.time-grid{gap:10px}
.time-opt{min-height:82px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:14px 10px}
.time-opt.active{background:var(--primary);border-color:var(--primary);color:#fff}
.time-opt.active .mins{color:#fff}
.time-opt.active .label{color:var(--accent);opacity:1}
.time-opt .mins{font-size:1.35rem;color:var(--primary)}
.btn-primary{min-height:48px;border-radius:24px;font-size:1rem;margin-top:14px!important}
.ranking-item{min-height:52px}
@media(max-width:800px){.grid-menu>.card{padding:18px}.grid-menu>div:last-child .card{min-height:auto}.mode-btn{min-height:58px}.time-opt{min-height:74px}}

/* Mobile clarity */
@media(max-width:700px){
  body{padding:8px;background:#f5f7fb}
  .topbar{max-width:none;width:100%;border-radius:16px;padding:14px;margin-bottom:12px;flex-direction:column;align-items:stretch}
  .topbar>div:first-child{align-items:center!important}
  .topbar>div:last-child{display:grid!important;grid-template-columns:1fr 1fr;gap:8px;justify-content:stretch!important}
  .btn-back{display:flex;align-items:center;justify-content:center;min-height:44px;padding:9px 12px;border-radius:18px;font-size:.86rem;background:#fff}
  .grid-menu{display:grid;grid-template-columns:1fr!important;gap:12px;max-width:none;width:100%}
  .grid-menu>.card{padding:16px!important;border-radius:16px}
  .card-title{font-size:1.18rem;margin-bottom:16px}
  .mode-toggle{display:grid;grid-template-columns:1fr;gap:8px;background:transparent;padding:0;margin-bottom:18px}
  .mode-btn{min-height:58px;background:var(--surface2);border-radius:14px;font-size:.92rem}
  .mode-btn small{font-size:.74rem}
  .form-group{margin-bottom:16px}
  label{font-size:.82rem}
  select,input{min-height:48px;border-radius:18px;font-size:.92rem}
  .time-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .time-opt{min-height:70px;border-radius:14px;padding:10px 8px}
  .time-opt .mins{font-size:1.18rem}
  .btn-primary{min-height:50px;border-radius:18px;font-size:1rem}
  .ranking-item{align-items:flex-start;gap:8px;min-height:auto}
  .rank-wins{font-size:.86rem}
  .layout-match{grid-template-columns:1fr!important;gap:10px;max-width:none;width:100%}
  .board-wrap{position:static!important;padding:10px;border-radius:16px}
  #board{max-width:calc(100vw - 36px)}
  .engine-bar{margin-top:8px;padding:10px;font-size:.82rem}
  .status-card{padding:16px}
  .turn-pill{padding:8px 16px}
  .player-row{padding:10px!important}
  .moves-box{max-height:150px;font-size:.82rem}
}

@media(max-width:420px){
  .topbar>div:last-child{grid-template-columns:1fr}
  .time-grid{grid-template-columns:1fr 1fr}
  .card{padding:14px}
}