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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #f5f7fa;
    color: #2d3748;
    line-height: 1.6;
}

.container { max-width: 1200px; margin: 0 auto; padding: 20px; }

header {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

h1 { font-size: 1.5rem; font-weight: 700; color: #1a202c; margin-bottom: 10px; }

.stats { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }

.stat {
    font-size: 0.85rem;
    color: #718096;
    padding: 6px 12px;
    background: #edf2f7;
    border-radius: 6px;
}

.stat.cost {
    background: #e6fffa;
    color: #234e52;
    font-weight: 600;
}

.hint {
    font-size: 0.8rem;
    color: #a0aec0;
    margin-top: 4px;
}

.questions {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 20px;
    min-height: 400px;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #a0aec0;
}

.question-item {
    padding: 16px;
    border-bottom: 1px solid #e2e8f0;
}

.question-item:last-child { border-bottom: none; }

.question-item.new-item {
    background: #fffff0;
    border-left: 3px solid #ecc94b;
}

.question-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.time {
    font-size: 0.85rem;
    color: #718096;
    font-weight: 500;
}

.badge {
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
}

.badge.escalada { background: #fed7d7; color: #c53030; }
.badge.tecnica { background: #c6f6d5; color: #2f855a; }
.badge.nuevo { background: #fefcbf; color: #975a16; }

.question-text {
    font-size: 0.95rem;
    color: #2d3748;
}

.question-cost {
    font-size: 0.75rem;
    color: #a0aec0;
    margin-top: 4px;
}

.empty {
    text-align: center;
    padding: 60px 20px;
    color: #a0aec0;
}

.empty-icon { font-size: 3rem; margin-bottom: 10px; }

@media (max-width: 768px) {
    .container { padding: 10px; }
    h1 { font-size: 1.25rem; }
    .stats { gap: 8px; }
    .stat { font-size: 0.8rem; padding: 4px 8px; }
}