/* Steps Layout & Components */

/* Step Layout (for steps with preview) */
.step-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--space-xl);
}

.step-left {
    background: var(--color-gray-50);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-200);
}

.step-right {
    position: sticky;
    top: var(--space-lg);
    height: fit-content;
}

/* Preview Box */
.preview-box {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-gray-200);
    box-shadow: var(--shadow-md);
}

.preview-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-md);
    text-align: center;
    color: var(--color-gray-600);
}

.preview-container {
    width: 100%;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.preview-container img {
    max-width: 100%;
    height: auto;
    display: block;
}

.preview-placeholder {
    text-align: center;
    color: var(--color-gray-400);
    padding: var(--space-2xl);
    font-size: var(--font-size-base);
}

/* Slider Components */
.slider-group {
    margin-bottom: var(--space-md);
}

.slider-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    margin-bottom: var(--space-xs);
    display: block;
    color: var(--color-gray-600);
}

.slider-value {
    display: inline-block;
    margin-left: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    font-weight: var(--font-weight-semibold);
}

input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: var(--radius-sm);
    background: var(--color-gray-200);
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    background: var(--color-black);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    background: var(--color-black);
    cursor: pointer;
    border: none;
    transition: transform var(--transition-fast);
}

input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
}

/* Step 1: Basic Settings */
#step1 .form-group {
    margin-bottom: var(--space-xl);
}

/* Step 2: Design Settings */
#step2 .form-group {
    margin-bottom: var(--space-xl);
}

/* Step 3: Image Upload */
#step3 .form-group {
    margin-bottom: var(--space-xl);
}

#step3 .image-preview {
    max-height: 400px;
    overflow-y: auto;
}

#step3 .image-preview::-webkit-scrollbar {
    width: 8px;
}

#step3 .image-preview::-webkit-scrollbar-track {
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
}

#step3 .image-preview::-webkit-scrollbar-thumb {
    background: var(--color-gray-400);
    border-radius: var(--radius-sm);
}

#step3 .image-preview::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-500);
}

/* 빙고판 생성 개수 선택 */
.count-selector {
    margin-bottom: 30px;
}

.count-selector h3 {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.count-buttons {
    display: flex;
    gap: 15px;
}

.count-btn {
    flex: 1;
    max-width: 150px;
    padding: 15px 20px;
    background: white;
    border: 2px solid #000;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    color: #000;
    cursor: pointer;
    transition: all 0.3s ease;
}

.count-btn:hover {
    border-color: #4CAF50;
    color: #4CAF50;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.2);
}

.count-btn.active {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    border-color: #4CAF50;
    color: white;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

.count-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===========================================
   용지 선택 버튼 (Step 2)
   =========================================== */
.paper-selector {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.paper-btn {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid #ddd;
    background: white;
    color: #333333;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.paper-btn:hover {
    border-color: #4A90E2;
    background: #f0f7ff;
}

.paper-btn.active {
    border-color: #4A90E2;
    background: #4A90E2;
    color: #ffffff !important;
}

/* ===========================================
   배경 이미지 업로드 그리드 (Step 1)
   =========================================== */
.background-upload-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 10px;
}

.background-upload-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.background-upload-item .sub-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #666;
    display: block;
}

.background-upload-item .upload-area {
    height: 120px;
}

.background-upload-item .upload-area p {
    font-size: 0.9rem;
}

.background-upload-item .image-preview {
    min-height: 100px;
}

.background-upload-item .preview-item {
    position: relative;
    width: 100%;
    padding: 10px;
    background: #f5f5f5;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.background-upload-item .preview-item img {
    max-width: 100%;
    max-height: 150px;
    border-radius: 4px;
}

.background-upload-item .remove-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(244, 67, 54, 0.9);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.background-upload-item .remove-btn:hover {
    background: #d32f2f;
    transform: scale(1.1);
}

/* ===========================================
   Step3 미리보기 탭 (결과 화면)
   =========================================== */
.preview-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

.preview-tab-btn {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: 1rem;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
}

.preview-tab-btn:hover {
    color: #333;
    background: #f5f5f5;
}

.preview-tab-btn.active {
    color: #4A90E2;
    border-bottom-color: #4A90E2;
}

.preview-panel {
    display: none;
}

.preview-panel.active {
    display: block;
}

.preview-panel .bingo-with-background {
    margin-top: 10px;
}

/* 용지별 설정 탭 스타일 */

.paper-settings-tabs {
    display: flex;
    gap: 10px;
    margin: 20px 0;
    border-bottom: 2px solid #e0e0e0;
}

.paper-settings-tab {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: 1rem;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    top: 2px;
}

.paper-settings-tab:hover {
    color: #333;
    background: #f5f5f5;
}

.paper-settings-tab.active {
    color: #4A90E2;
    border-bottom-color: #4A90E2;
    background: #f8fbff;
}

/* 설정 패널 */
.paper-settings-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.paper-settings-panel.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 미리보기 탭 (Step 2용) */
.preview-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.preview-tab-btn {
    flex: 1;
    padding: 10px 15px;
    background: #f5f5f5;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
}

.preview-tab-btn:hover {
    background: #e8e8e8;
    border-color: #ccc;
}

.preview-tab-btn.active {
    background: #4A90E2;
    border-color: #4A90E2;
    color: white;
}

/* 미리보기 패널 */
.preview-panel {
    display: none;
}

.preview-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* 반응형 */
@media (max-width: 768px) {
    .paper-settings-tabs {
        flex-direction: column;
        gap: 5px;
    }

    .paper-settings-tab {
        border-bottom: none;
        border-left: 3px solid transparent;
    }

    .paper-settings-tab.active {
        border-left-color: #4A90E2;
        border-bottom-color: transparent;
    }
}

/* ===========================================
   반응형: 모바일
   =========================================== */
@media (max-width: 768px) {
    .background-upload-grid {
        grid-template-columns: 1fr;
    }

    .count-buttons {
        flex-direction: column;
    }

    .count-btn {
        max-width: 100%;
    }

    .step-layout {
        grid-template-columns: 1fr;
    }

    .step-right {
        position: relative;
        top: 0;
    }

    .preview-container {
        min-height: 300px;
    }

    .step-left,
    .step-inner {
        padding: var(--space-lg);
    }

    .step-title {
        font-size: var(--font-size-2xl);
    }

    .border-grid {
        grid-template-columns: 1fr;
    }

    .preview-container {
        min-height: 250px;
    }
}

/* Responsive */
@media (max-width: 1200px) {
    .step-layout {
        grid-template-columns: 1fr;
    }

    .step-right {
        position: relative;
        top: 0;
    }

    .preview-container {
        min-height: 300px;
    }
}