/* ================================================
   오답노트 플로팅 UI 스타일
   ================================================ */

/* 플로팅 패널 */
.error-note-panel {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 360px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15), 0 2px 8px rgba(0, 0, 0, 0.08);
    z-index: 9000;
    overflow: visible;
    transition: box-shadow 0.3s ease;
    border: 1px solid rgba(74, 144, 217, 0.2);
}

.error-note-panel-open {
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.2), 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 헤더 */
.error-note-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    background: linear-gradient(135deg, #4A90D9, #5B6ABF);
    color: white;
    cursor: pointer;
    user-select: none;
}

.error-note-title {
    font-size: 15px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.error-note-title i {
    font-size: 14px;
}

.error-note-toggle {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transition: background 0.2s;
}

.error-note-toggle:hover {
    background: rgba(255, 255, 255, 0.35);
}

.error-note-toggle i {
    font-size: 12px;
}

/* 본문 */
.error-note-body {
    padding: 16px 18px;
    display: none;
}

/* 안내 문구 */
.error-note-guide {
    font-size: 13px;
    color: #666;
    margin-bottom: 12px;
    line-height: 1.5;
    padding: 10px 12px;
    background: #f8f9fb;
    border-radius: 8px;
    border-left: 3px solid #4A90D9;
}

/* 텍스트 영역 */
.error-note-textarea {
    width: 100%;
    height: 160px;
    padding: 14px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 14px;
    line-height: 1.6;
    resize: vertical;
    font-family: 'Inter', -apple-system, sans-serif;
    transition: border-color 0.2s;
    box-sizing: border-box;
    color: #333;
}

.error-note-textarea:focus {
    outline: none;
    border-color: #4A90D9;
    box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.1);
}

.error-note-textarea::placeholder {
    color: #aab;
    font-size: 13px;
}

.error-note-textarea.error-note-readonly {
    background: #f8f9fb;
    color: #555;
    cursor: default;
}

/* 하단 (단어 수 + 제출 버튼) */
.error-note-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 12px;
}

/* 단어 수 안내 */
.error-note-notice {
    font-size: 12px;
    color: #888;
    display: flex;
    align-items: center;
    gap: 5px;
}

.error-note-notice i {
    color: #4A90D9;
    font-size: 11px;
}

/* 제출 버튼 */
.error-note-submit-btn {
    padding: 10px 22px;
    background: linear-gradient(135deg, #4A90D9, #5B6ABF);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.error-note-submit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 144, 217, 0.3);
}

.error-note-submit-btn:active {
    transform: translateY(0);
}

.error-note-submit-btn:disabled {
    cursor: default;
    transform: none;
    box-shadow: none;
}

.error-note-submit-btn.error-note-submitted {
    background: linear-gradient(135deg, #4CAF50, #43A047);
}

.error-note-submit-btn.error-note-failed {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    animation: error-note-shake 0.5s ease;
}

@keyframes error-note-shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-4px); }
    40%, 80% { transform: translateX(4px); }
}

/* 드래그 리사이즈 핸들 */
.error-note-resize-handle {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 16px;
    cursor: ns-resize;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.error-note-panel-open .error-note-resize-handle {
    display: flex;
}

.error-note-resize-handle .resize-bar {
    width: 40px;
    height: 4px;
    background: #ccc;
    border-radius: 2px;
    transition: background 0.2s;
}

.error-note-resize-handle:hover .resize-bar {
    background: #999;
}

/* ========================================
   경고 팝업
   ======================================== */

.error-note-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9500;
    display: none;
}

.error-note-warning-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9600;
    animation: errorNotePopupIn 0.25s ease;
}

@keyframes errorNotePopupIn {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.error-note-warning-content {
    background: white;
    border-radius: 20px;
    padding: 32px 28px;
    text-align: center;
    max-width: 380px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.error-note-warning-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: #FFF3CD;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.error-note-warning-icon i {
    font-size: 24px;
    color: #F39C12;
}

.error-note-warning-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: #333;
    margin: 0 0 12px;
}

.error-note-warning-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin: 0 0 24px;
}

.error-note-warning-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.error-note-btn-edit {
    flex: 1;
    padding: 12px 16px;
    background: linear-gradient(135deg, #4A90D9, #5B6ABF);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.error-note-btn-edit:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 144, 217, 0.3);
}

.error-note-btn-force {
    flex: 1;
    padding: 12px 16px;
    background: #f5f5f5;
    color: #888;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.error-note-btn-force:hover {
    background: #eee;
    color: #666;
}

/* ========================================
   Speaking 녹음 파일 업로드
   ======================================== */

.speaking-upload-section {
    margin-top: 12px;
    padding: 14px;
    background: #f0ecfa;
    border: 1px solid #d8cff0;
    border-radius: 10px;
}

.speaking-upload-title {
    font-size: 13px;
    font-weight: 700;
    color: #5B4A9E;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.speaking-upload-title i {
    color: #9480c5;
}

.speaking-upload-desc {
    font-size: 11px;
    color: #8a7ab8;
    margin-bottom: 12px;
}

.speaking-upload-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.speaking-upload-row:last-child {
    margin-bottom: 0;
}

.speaking-upload-label {
    font-size: 12px;
    font-weight: 700;
    color: #5B4A9E;
    min-width: 52px;
    flex-shrink: 0;
}

.speaking-upload-btn {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: white;
    border: 1.5px dashed #b9a0df;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 500;
    color: #7a68aa;
    cursor: pointer;
    transition: all 0.18s;
    overflow: hidden;
}

.speaking-upload-btn:hover {
    border-color: #9480c5;
    background: #f7f5fd;
}

.speaking-upload-btn span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.speaking-upload-btn-selected {
    background: #e8e0f7;
    border-style: solid;
    border-color: #9480c5;
    color: #5B4A9E;
    font-weight: 600;
}

.speaking-upload-btn-selected i {
    color: #22c55e;
}

.speaking-upload-remove {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fee2e2;
    border: none;
    border-radius: 50%;
    color: #dc2626;
    font-size: 11px;
    cursor: pointer;
    flex-shrink: 0;
    transition: all 0.15s;
}

.speaking-upload-remove:hover {
    background: #fca5a5;
}

/* 파일 첨부 상태 표시 */
.speaking-file-status {
    font-size: 11.5px;
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 8px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.speaking-file-status-empty {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.speaking-file-status-partial {
    background: #fffbeb;
    color: #d97706;
    border: 1px solid #fde68a;
}

.speaking-file-status-ok {
    background: #f0fdf4;
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

/* Speaking 경고 팝업 아이콘 */
.speaking-file-warning-icon {
    background: #fef2f2 !important;
}

.speaking-file-warning-icon i {
    color: #dc2626 !important;
}

/* ========================================
   반응형 (모바일)
   ======================================== */

@media (max-width: 480px) {
    .error-note-panel {
        width: calc(100% - 24px);
        right: 12px;
        bottom: 12px;
        border-radius: 14px;
    }

    .error-note-textarea {
        height: 120px;
        font-size: 13px;
    }

    .error-note-warning-content {
        max-width: calc(100vw - 40px);
        padding: 24px 20px;
    }

    .error-note-warning-buttons {
        flex-direction: column;
    }
}