/* InoRobot3DView — Simulation Edition — Premium Stylesheet */
:root {
    --bg:         #0b0e14;
    --bar-bg:     rgba(15, 19, 28, 0.95);
    --accent:     #007aff;
    --accent-glow:rgba(0,122,255,0.3);
    --accent-dim: rgba(0,122,255,0.1);
    --text-1:     #ffffff;
    --text-2:     #94a3b8;
    --border:     rgba(255,255,255,0.09);
    --topbar-h:   72px;
    --stats-h:    48px;
    --ease:       cubic-bezier(0.4,0,0.2,1);
}

* { box-sizing:border-box; margin:0; padding:0; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text-1);
    overflow: hidden;
    height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ── TOP BAR ───────────────────────────────── */
#topbar {
    position: fixed;
    top:0; left:0; right:0;
    height: var(--topbar-h);
    background: var(--bar-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    gap: 1.5rem;
    z-index: 200;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-shrink: 0;
}

.logo-link {
    display: flex;
    align-items: center;
    background: transparent;
    padding: 0;
    border-radius: 0;
    border: none;
    transition: all 0.3s var(--ease);
}

.logo-link:hover {
    transform: scale(1.05);
}

.logo {
    height: 60px; /* 로고 크기 1.5배 확대 (40px -> 60px) 및 패딩 제거 */
    width: auto;
    object-fit: contain;
    display: block;
}

.app-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.45rem; 
    font-weight: 700;
    letter-spacing: -0.3px;
    padding-left: 1.5rem;
    border-left: 1px solid var(--border);
    white-space: nowrap;
    text-transform: none;
    color: var(--text-1);
    margin-right: 1.5rem;
}

.add-mode-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 1.5rem;
    height: 44px;
    min-width: 160px;
    white-space: nowrap;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.2s var(--ease);
    color: var(--text-2);
    user-select: none;
    margin-left: 1rem;
}

.add-mode-toggle:hover {
    background: rgba(255,255,255,0.08);
    border-color: var(--accent);
}

.add-mode-toggle input {
    display: none;
}

.add-mode-toggle input:checked + span {
    color: var(--accent);
}

.add-mode-toggle input:checked ~ span i {
    color: var(--accent);
}

/* ── Select Combobox ───────────────────────── */
.topbar-center {
    flex: 1;
    display: flex;
    justify-content: center;
    max-width: 600px;
}

.select-wrapper {
    position: relative;
    width: 100%;
}

.select-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent);
    font-size: 1rem;
    pointer-events: none;
    z-index: 1;
}

.arrow-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-2);
    font-size: 0.8rem;
    pointer-events: none;
}

#model-select {
    width: 100%;
    padding: 0.8rem 2.8rem;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.06);
    color: #fff;
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    outline: none;
    appearance: none;
    transition: all 0.2s var(--ease);
}

#model-select:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(59, 130, 246, 0.5);
}

#model-select optgroup {
    background-color: #0f172a;
    color: #94a3b8;
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

#model-select option {
    background-color: #0f172a;
    color: #ffffff;
    padding: 10px;
}

/* ── UI Buttons ───────────────────────────── */
.topbar-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.ui-btn {
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    color: var(--text-2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s var(--ease);
}

.ui-btn:hover {
    background: var(--accent);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.ui-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.ui-btn.active:hover {
    box-shadow: 0 4px 12px var(--accent-glow), 0 0 20px rgba(0, 122, 255, 0.4);
}



/* ── Viewport & Overlays ─────────────── */
#main-content {
    position: absolute;
    top: var(--topbar-h);
    left: 0; right: 0;
    bottom: var(--stats-h);
}

#canvas-container {
    width: 100%; height: 100%;
    position: relative;
}

/* ── HUD / Stats Bar ── */
#stats-bar {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: var(--stats-h);
    background: var(--bar-bg);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    gap: 1rem;
    font-size: 0.85rem;
    z-index: 100;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.stat-item label {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--text-2);
    text-transform: none;
}

.stat-item span {
    font-family: 'Outfit', sans-serif; /* 모델명과 상태 글꼴도 Outfit으로 통일 */
    color: var(--text-1);
    font-weight: 600;
    letter-spacing: 0.3px;
}

.stat-divider {
    width: 1px;
    height: 14px;
    background: var(--border);
}

#status-dot {
    font-size: 0.5rem;
    color: var(--accent);
}

/* Loading & Empty state */
#loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(11,14,20,0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 500;
    transition: opacity 0.4s var(--ease);
}

.loader-content {
    text-align: center;
}

.spinner {
    width: 44px; height: 44px;
    border: 3px solid rgba(0,122,255,0.1);
    border-top: 3px solid var(--accent);
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

#empty-state {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    padding: 3rem;
    max-width: 540px;
    pointer-events: none;
}

#empty-state h2 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

#empty-state p {
    color: var(--text-2);
    line-height: 1.6;
}

.hero-icon-wrap {
    font-size: 4rem;
    color: var(--accent-dim);
    margin-bottom: 2rem;
}

.hint {
    margin-top: 2rem;
    font-size: 0.85rem;
    color: #4ade80;
    opacity: 0.8;
}

/* ── Responsive Mobile ───────────────── */
@media (max-width: 768px) {
    #topbar {
        padding: 0 1rem;
        gap: 0.5rem;
    }
    
    .topbar-left {
        gap: 0.5rem;
    }
    
    .logo {
        height: 36px;
    }
    
    .app-title {
        display: none; /* Mobile에서 제목 숨김 */
    }
    
    .topbar-center {
        max-width: none;
        min-width: 0;
        overflow: hidden;
    }

    #model-select {
        padding: 0.6rem 2rem;
        font-size: 0.9rem;
        min-width: 0;
        width: 100%;
    }

    .select-icon {
        left: 10px;
    }
    
    .arrow-icon {
        right: 10px;
    }
    
    .topbar-right {
        gap: 0.4rem;
        flex-shrink: 0;
    }
    
    .ui-btn {
        width: 38px;
        height: 38px;
        border-radius: 8px;
    }

    #stats-bar {
        padding: 0 1rem;
        gap: 0.5rem;
        font-size: 0.75rem;
    }

    .stat-item label {
        display: none; /* Mobile에서 Label 숨김 (공간 확보) */
    }
}

.hidden { display: none !important; opacity: 0; }