/* ================================================================== */
/* == 문제은행 페이지 전용 스타일 (exercise_bank.css) == */
/* ================================================================== */

.page-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 15px; background-color: rgba(0, 0, 0, 0.4);     backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px); border-radius: 10px; padding: 20px 30px; border: 1px solid rgba(0, 0, 0, 0.1); margin-bottom: 30px; }
.page-title { font-size: 2.2em; font-weight: 700; margin: 0; }
.nav-buttons { display: flex; flex-wrap: wrap; gap: 10px; }
.nav-btn { padding: 10px 20px; background-color: rgba(255, 255, 255, 0.1); color: #fff; text-decoration: none; border-radius: 6px; font-weight: 500; border: 1px solid rgba(255, 255, 255, 0.3); transition: all 0.2s; }
.nav-btn:hover { background-color: rgba(255, 255, 255, 0.2); transform: translateY(-2px); }
.nav-btn.special { background-color: #FFDE59; color: #333; font-weight: bold; border-color: #FFDE59; }
.filter-section { background-color: rgba(0, 0, 0, 0.2); backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px); border-radius: 10px; padding: 20px; margin-bottom: 30px; border: 1px solid rgba(0, 0, 0, 0.1); }
.filter-buttons { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.filter-buttons a { padding: 8px 15px; text-decoration: none; color: #e0e0e0; background-color: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 20px; transition: all 0.3s; }
.filter-buttons a:hover { background-color: rgba(255, 255, 255, 0.15); color: #fff; }
.filter-buttons a.selected { background-color: #FFDE59; color: #333; font-weight: bold; border-color: #FFDE59; }
.question-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 25px; }
.question-card { background-color: rgba(0, 0, 0, 0.3); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid rgba(0, 0, 0, 0.1); border-radius: 10px; padding: 20px; box-shadow: 0 4px 8px rgba(0,0,0,0.2); transition: all 0.3s; display: flex; flex-direction: column; border-left: 5px solid transparent; }
.question-card:hover { transform: translateY(-5px); }
.card-title-container { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.card-title-container h4 { font-size: 1.3em; margin: 0; flex-grow: 1; overflow-wrap: break-word; word-break: break-all; }
.new-badge { background-color: #dc3545; color: white; padding: 3px 9px; font-size: 0.8em; font-weight: bold; border-radius: 12px; margin-left: 10px; flex-shrink: 0; }
.question-card .meta { font-size: 0.9em; color: #e0e0e0; margin-bottom: 15px; flex-grow: 1;}
.card-footer { margin-top: auto; padding-top: 15px; border-top: 1px solid rgba(255, 255, 255, 0.2); display: flex; justify-content: space-between; align-items: center; font-size: 0.9em; color: #ccc; }
.actions a.solve-btn { padding: 8px 15px; border-radius: 6px; text-decoration: none; color: #fff; font-weight: 500; background-color: #007bff; }
.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 40px; padding: 20px; }
.pagination a, .pagination span { text-decoration: none; color: #fff; background-color: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.3); padding: 10px 15px; border-radius: 8px; }
.pagination span.current { background-color: #FFDE59; color: #333; font-weight: bold; border-color: #FFDE59; }
.question-card.solved { border-left-color: #28a745; background-color: rgba(0, 0, 0, 0.3); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); opacity: 0.5; }

@media (max-width: 768px) {
    .page-header { flex-direction: column; align-items: center; text-align: center; }
}