/* =========================================
   MATH ARENA PRO - Deep Space System
   ========================================= */

:root {
    --ma-bg-dark: #020617;
    --ma-panel-bg: rgba(30, 41, 59, 0.4);
    --ma-panel-border: rgba(255, 255, 255, 0.08);
    --ma-primary: #6366f1;
    --ma-primary-dark: #4f46e5;
    --ma-success: #10b981;
    --ma-danger: #ef4444;
    --ma-warning: #facc15;
    --ma-text: #f8fafc;
    --ma-text-muted: #94a3b8;
}

body.page-template-page-math-arena {
    background-color: var(--ma-bg-dark) !important;
    color: var(--ma-text);
    font-family: 'Inter', system-ui, sans-serif;
}

/* Background FX */
#app-arena::before {
    content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
    background: 
        radial-gradient(circle at 15% 50%, rgba(99, 102, 241, 0.08), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(16, 185, 129, 0.05), transparent 25%);
    background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 40px 40px;
}

.arena-wrapper { width: 100%; padding: 40px; min-height: 100vh; }

/* --- HERO SECTION --- */
.arena-hero { max-width: 1200px; margin: 0 auto 30px; }
.arena-hero-inner {
    padding: 30px; display: flex; justify-content: space-between; align-items: center;
    gap: 20px; flex-wrap: wrap;
}

.arena-title { font-size: 2.2rem; margin: 0 0 10px; display: flex; align-items: center; gap: 12px; }
.icon-glow { color: var(--ma-primary); filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.5)); }
.badge-pro { font-size: 0.7rem; background: var(--ma-primary); color: white; padding: 2px 6px; border-radius: 4px; vertical-align: middle; }
.arena-subtitle { color: var(--ma-text-muted); max-width: 600px; line-height: 1.5; margin: 0; }

.arena-hints { display: flex; gap: 10px; flex-wrap: wrap; }
.hint-tag { 
    background: rgba(255,255,255,0.05); border: 1px solid var(--ma-panel-border); 
    padding: 6px 12px; border-radius: 20px; font-size: 0.85rem; color: var(--ma-text-muted);
    display: flex; align-items: center; gap: 6px;
}

/* --- MAIN SHELL --- */
.arena-shell { max-width: 1200px; margin: 0 auto 80px; overflow: hidden; min-height: 600px; display: flex; flex-direction: column; }

/* UTILS */
.glass-panel {
    background: var(--ma-panel-bg);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--ma-panel-border);
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}
.arena-hidden { display: none !important; }
.text-success { color: var(--ma-success) !important; }
.text-warning { color: var(--ma-warning) !important; }
.text-danger { color: var(--ma-danger) !important; }
.text-primary { color: var(--ma-primary) !important; }

/* --- TOPBAR --- */
.arena-topbar {
    padding: 15px 25px; background: rgba(0,0,0,0.2); border-bottom: 1px solid var(--ma-panel-border);
    display: flex; justify-content: space-between; align-items: center;
}
.arena-topbar-left { display: flex; gap: 10px; }

.arena-btn {
    background: rgba(255,255,255,0.05); border: 1px solid var(--ma-panel-border);
    color: var(--ma-text); padding: 8px 16px; border-radius: 8px; font-weight: 600; cursor: pointer;
    transition: 0.2s; display: flex; align-items: center; gap: 8px; font-size: 0.9rem;
}
.arena-btn:hover { background: rgba(255,255,255,0.1); border-color: white; }
.arena-btn-primary { background: rgba(99, 102, 241, 0.2); border-color: var(--ma-primary); color: white; }
.arena-btn-primary:hover { background: var(--ma-primary); }
.arena-btn-ghost { background: transparent; border-color: transparent; color: var(--ma-text-muted); }
.arena-btn-ghost:hover { color: white; background: rgba(255,255,255,0.05); }

.arena-pill { 
    background: rgba(0,0,0,0.3); padding: 6px 12px; border-radius: 20px; 
    border: 1px solid var(--ma-panel-border); font-size: 0.85rem; display: flex; gap: 8px; 
}
.arena-pill-label { color: var(--ma-text-muted); font-weight: 600; text-transform: uppercase; }
.arena-pill-value { font-weight: 700; }

/* --- CONFIG PANEL --- */
.arena-panel { padding: 30px; animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.arena-config-grid { display: grid; grid-template-columns: 200px 200px 1fr; gap: 20px; margin-bottom: 30px; }
.arena-field label { display: block; color: var(--ma-text-muted); font-size: 0.8rem; font-weight: 700; text-transform: uppercase; margin-bottom: 8px; }

.select-wrapper { position: relative; }
.arena-select {
    width: 100%; padding: 12px; background: rgba(255,255,255,0.05); border: 1px solid var(--ma-panel-border);
    border-radius: 10px; color: white; outline: none; cursor: pointer; font-size: 0.95rem;
}
.arena-select:focus { border-color: var(--ma-primary); }

.arena-tabs { display: flex; gap: 8px; background: rgba(0,0,0,0.2); padding: 4px; border-radius: 12px; }
.arena-tab {
    flex: 1; background: transparent; border: none; color: var(--ma-text-muted); padding: 10px;
    border-radius: 8px; cursor: pointer; font-weight: 600; transition: 0.2s;
    display: flex; align-items: center; justify-content: center; gap: 6px;
}
.arena-tab:hover { color: white; }
.arena-tab.is-active { background: var(--ma-primary); color: white; box-shadow: 0 4px 12px rgba(99,102,241,0.3); }

/* Presets Grid */
.arena-section-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; border-bottom: 1px solid var(--ma-panel-border); padding-bottom: 10px; }
.arena-section-title { font-size: 1.1rem; margin: 0; display: flex; align-items: center; gap: 10px; }

.arena-presets-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; margin-bottom: 30px;
}
.arena-preset {
    background: rgba(255,255,255,0.03); border: 1px solid var(--ma-panel-border);
    padding: 15px; border-radius: 12px; text-align: left; cursor: pointer; transition: 0.2s;
    display: flex; flex-direction: column;
}
.arena-preset:hover { background: rgba(255,255,255,0.07); transform: translateY(-2px); }
.arena-preset.is-active { border-color: var(--ma-primary); background: rgba(99, 102, 241, 0.1); }
.arena-preset strong { display: block; color: white; font-size: 1rem; margin-bottom: 4px; }
.arena-preset small { color: var(--ma-text-muted); font-size: 0.8rem; }

.arena-actions-footer { text-align: center; margin-top: 20px; }
.btn-glow {
    background: linear-gradient(135deg, var(--ma-primary) 0%, #4338ca 100%);
    padding: 16px 40px; font-size: 1.1rem; border-radius: 50px; border: none;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}
.btn-glow:hover { transform: scale(1.05); box-shadow: 0 0 30px rgba(99, 102, 241, 0.6); }

/* --- GAME PANEL --- */
.arena-game-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.arena-stats-row { display: flex; gap: 15px; }
.stat-pill { background: rgba(0,0,0,0.3); padding: 8px 16px; border-radius: 12px; text-align: center; min-width: 80px; }
.stat-pill .lbl { display: block; font-size: 0.7rem; color: var(--ma-text-muted); font-weight: 700; }
.stat-pill .val { font-size: 1.1rem; font-weight: 800; color: white; }

.arena-stage-layout { display: grid; grid-template-columns: 1fr 320px; gap: 20px; }

/* Question Card */
.arena-question-card { padding: 30px; display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 400px; position: relative; }

.arena-cutoff-bar { position: absolute; top: 0; left: 0; width: 100%; height: 6px; background: rgba(255,255,255,0.1); }
.arena-cutoff-fill { height: 100%; background: var(--ma-primary); transition: width 0.1s linear; }

.arena-question-display { font-size: 4rem; font-weight: 900; margin-bottom: 30px; letter-spacing: -2px; }

.arena-input-wrap { display: flex; gap: 10px; width: 100%; max-width: 350px; }
.arena-answer-input {
    flex: 1; background: transparent; border: none; border-bottom: 4px solid rgba(255,255,255,0.2);
    font-size: 3rem; color: white; text-align: center; font-weight: 700; outline: none; padding-bottom: 10px;
}
.arena-answer-input:focus { border-color: var(--ma-primary); }
.arena-btn-submit { display: none; } /* Só aparece mobile */

.arena-feedback { height: 30px; margin-top: 15px; font-weight: 700; font-size: 1.1rem; }
.arena-feedback.ok { color: var(--ma-success); }
.arena-feedback.bad { color: var(--ma-danger); }

/* Keypad */
.arena-keypad { 
    display: none; /* Desktop default: none */
    grid-template-columns: repeat(4, 1fr); gap: 10px; width: 100%; max-width: 350px; margin-top: 20px; 
}
.kp {
    background: rgba(255,255,255,0.05); border: 1px solid var(--ma-panel-border);
    color: white; font-size: 1.5rem; font-weight: 600; padding: 15px; border-radius: 12px; cursor: pointer;
}
.kp:active { background: var(--ma-primary); }
.kp-fn { color: var(--ma-text-muted); background: rgba(0,0,0,0.2); }
.kp-enter { grid-column: span 1; background: var(--ma-primary-dark); font-size: 1rem; }
.kp-zero { grid-column: span 2; }

/* In-Game Sidebar (Widgets) */
.arena-ingame-sidebar { display: flex; flex-direction: column; gap: 20px; }
.arena-side-widget { padding: 15px; }
.widget-title { font-size: 0.9rem; text-transform: uppercase; color: var(--ma-text-muted); margin-bottom: 15px; }

.w-item { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.05); font-size: 0.9rem; }
.w-item strong { color: white; }
.w-item span { color: var(--ma-text-muted); }

/* Heatmap Table */
.arena-heatmap-wrap { overflow-x: auto; }
.arena-heatmap { border-collapse: collapse; width: 100%; font-size: 0.8rem; }
.arena-heatmap td { width: 24px; height: 24px; text-align: center; border: 1px solid rgba(255,255,255,0.05); }
.arena-heatmap th { color: var(--ma-text-muted); font-weight: normal; }

/* --- SUMMARY --- */
.arena-summary-card { max-width: 500px; margin: 0 auto; text-align: center; padding: 40px; }
.summary-icon-glow { font-size: 4rem; color: var(--ma-warning); margin-bottom: 20px; filter: drop-shadow(0 0 20px rgba(250,204,21,0.4)); }
.summary-stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; margin: 30px 0; }
.s-stat { background: rgba(0,0,0,0.3); padding: 15px; border-radius: 12px; }
.s-stat .lbl { display: block; font-size: 0.7rem; color: var(--ma-text-muted); margin-bottom: 5px; }
.s-stat .val { font-size: 1.3rem; font-weight: 800; color: white; }

/* Responsive */
@media (max-width: 1024px) {
    .arena-stage-layout { grid-template-columns: 1fr; }
    .arena-keypad { display: grid; } /* Mostra teclado em tablets/mobile */
    .arena-config-grid { grid-template-columns: 1fr; }
}