/* 튜토리얼 다이얼로그 등장/퇴장 애니메이션 */
@keyframes tutorialIn {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

@keyframes tutorialOut {
    from {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    to {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.95);
    }
}

/* 슬라이드 전환 */
@keyframes slideInFromRight {
    from { opacity: 0; transform: translateX(32px); }
    to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInFromLeft {
    from { opacity: 0; transform: translateX(-32px); }
    to   { opacity: 1; transform: translateX(0); }
}

#tutorialDialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    margin: 0;
    width: 520px;
    padding: 0;
    background: rgba(22, 22, 26, 0.96);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: 20px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6);
    color: #fff;
    font-family: 'Pretendard Variable', sans-serif;
    overflow: hidden;
}

#tutorialDialog[open] {
    display: flex;
    flex-direction: column;
    animation: tutorialIn 0.22s cubic-bezier(0.2, 0, 0.13, 1) forwards;
}

#tutorialDialog.closing {
    animation: tutorialOut 0.18s cubic-bezier(0.2, 0, 0.13, 1) forwards;
}

#tutorialDialog::backdrop {
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(3px);
}

/* 닫기(X) 버튼 */
#tutorialClose {
    position: absolute;
    top: 14px;
    right: 16px;
    background: none;
    color: rgba(255, 255, 255, 0.45);
    font-size: 16px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: color 0.15s, background 0.15s;
    z-index: 1;
}

#tutorialClose:hover {
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.08);
}

/* 슬라이드 영역 */
#tutorialSlider {
    position: relative;
    overflow: hidden;
}

.tutorial-slide {
    display: none;
    flex-direction: column;
    align-items: center;
    padding: 48px 40px 32px;
    text-align: center;
    animation: slideInFromRight 0.22s cubic-bezier(0.2, 0, 0.13, 1) forwards;
}

.tutorial-slide.active {
    display: flex;
}

.tutorial-slide.from-left {
    animation: slideInFromLeft 0.22s cubic-bezier(0.2, 0, 0.13, 1) forwards;
}

/* 이미지 영역 */
.tutorial-image {
    width: 100%;
    height: 220px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 28px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.07);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tutorial-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 이미지 없을 때 빈 영역 표시 */
.tutorial-image img[src$="/"] ,
.tutorial-image img:not([src]) {
    display: none;
}

.tutorial-slide h2 {
    margin: 0 0 12px;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #fff;
}

.tutorial-slide p {
    margin: 0;
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.65);
}

.tutorial-slide p b {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
}

.tutorial-slide p code {
    font-family: monospace;
    background: rgba(255, 255, 255, 0.10);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.85);
}

/* 하단 푸터 */
#tutorialFooter {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 40px 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
}

/* 단계 도트 */
#tutorialDots {
    display: flex;
    gap: 7px;
    align-items: center;
}

.dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transition: background 0.2s, transform 0.2s;
}

.dot.active {
    background: #fff;
    transform: scale(1.25);
}

/* 버튼 그룹 */
#tutorialButtons {
    display: flex;
    gap: 8px;
}

#tutorialPrev,
#tutorialNext,
#tutorialDone {
    padding: 9px 20px;
    border-radius: 10px;
    font-family: 'Pretendard Variable', sans-serif;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, opacity 0.15s;
}

#tutorialPrev {
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.7);
}

#tutorialPrev:hover {
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
}

#tutorialPrev:disabled {
    opacity: 0.25;
    cursor: default;
}

#tutorialNext,
#tutorialDone {
    background: #fff;
    color: #111;
}

#tutorialNext:hover,
#tutorialDone:hover {
    background: rgba(255, 255, 255, 0.88);
}