/* [디자인 복구] 사용자 제공 원본 CSS 테마 */
:root {
    --gemini-bg: #131314;
    --gemini-panel: #1e1f20;
    --gemini-item: #2b2c2f;
    --gemini-accent: #8ab4f8;
    --gemini-border: rgba(255, 255, 255, 0.08);
    --gemini-text: #e8eaed;
    --gemini-muted: #9aa0a6;
    --gemini-gold: #fbbf24;
}

.strength-calculator-container {
    color: var(--gemini-text);
    background-color: var(--gemini-bg);
    padding: 20px;
}

.strength-grid {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    gap: 20px;
}

.strength-panel {
    background: var(--gemini-panel);
    border: 1px solid var(--gemini-border);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.panel-title {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--gemini-muted);
}

.part-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: var(--gemini-item);
    border: 1px solid transparent;
    border-radius: 10px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: 0.3s;
}

.part-item:hover { 
    transform: translateY(-1px); 
    border-color: var(--gemini-accent); 
    box-shadow: 0 0px 25px rgba(0,0,0,0.2); 
}

.part-item.active {
    border-color: var(--gemini-accent);
    background: rgba(138, 180, 248, 0.05);
}

.part-info { display: flex; align-items: center; gap: 12px; }
.part-name { font-size: 0.9rem; font-weight: 500; }

/* 단계 입력창 수정 */
.level-input, .minimal-select {
    background-color: #000;
    border: 1px solid var(--gemini-border);
    color: var(--gemini-accent);
    border-radius: 6px;
    padding: 4px 8px;
    outline: none;
    text-align: center;
    width: 50px;
    font-weight: 700;
}

.level-input:focus {
    border-color: var(--gemini-accent);
    background-color: #111;
}

.item-visual-box {
    text-align: center;
    padding: 30px;
    border-bottom: 1px solid var(--gemini-border);
    margin-bottom: 20px;
}

/* [추가] 강화 이미지 효과 애니메이션 */
.visual-wrapper {
    position: relative;
    width: 90px;
    height: 90px;
    margin: 0 auto 15px;
    background: #000;
    border: 1px solid var(--gemini-border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.3s;
}

.visual-wrapper img { width: 50px; filter: drop-shadow(0 0 8px rgba(138, 180, 248, 0.4)); position: relative; z-index: 2; }

/* 성공 효과 클래스 */
.success-flash {
    animation: flash-glow 0.6s ease-out;
}

@keyframes flash-glow {
    0% { box-shadow: 0 0 0px var(--gemini-accent); transform: scale(1); }
    50% { box-shadow: 0 0 40px var(--gemini-accent); transform: scale(1.1); }
    100% { box-shadow: 0 0 0px var(--gemini-accent); transform: scale(1); }
}

.level-indicator {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--gemini-accent);
    color: #000;
    padding: 2px 8px;
    font-size: 0.75rem;
    font-weight: 900;
    border-radius: 4px;
    z-index: 3;
}

.item-identity { font-size: 1.1rem; font-weight: 700; color: var(--gemini-accent); }

.ability-node {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--gemini-border);
    border-radius: 8px;
    margin-bottom: 6px;
}

.btn-node-select {
    background: rgba(138, 180, 248, 0.1);
    border: 1px solid rgba(138, 180, 248, 0.2);
    color: var(--gemini-accent);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
}

.btn-node-select.active { background: var(--gemini-accent); color: #000; }

.resource-group { display: flex; gap: 10px; margin-top: 10px; }
.res-item {
    flex: 1;
    background: #000;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--gemini-border);
    display: flex;
    flex-direction: column; gap: 4px;
}

.res-name { font-size: 0.7rem; color: var(--gemini-muted); }
.res-val { font-size: 1rem; font-weight: 700; }

.log-summary {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--gemini-border);
}

.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.log-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.log-row .key { font-size: 0.85rem; color: var(--gemini-muted); }
.log-row .val { font-size: 0.95rem; font-weight: 600; }
.log-row .val.highlight { color: var(--gemini-gold); }

.btn-action {
    width: 100%;
    padding: 16px;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    transition: 0.2s;
    border: none;
}

/* [추가] 강화 버튼 클릭 시 눌림 효과 */
.btn-action.execute:active {
    transform: scale(0.96);
    background: #79a3e8;
}

.btn-action:hover { 
    transform: translateY(-3px); 
    box-shadow: 0 5px 15px rgba(0,0,0,0.3); 
}

.btn-action.execute { background: var(--gemini-accent); color: #000; margin-top: 10px; }
.btn-action.reset { background: transparent; border: 1px solid #d93025; color: #d93025; margin-top: auto; }

.text-link {
    background: transparent;
    border: none;
    color: var(--gemini-accent);
    font-size: 0.75rem;
    text-decoration: underline;
    cursor: pointer;
}

@media (max-width: 1100px) { .strength-grid { grid-template-columns: 1fr; } }