/* Elite Design System - Studio Refined */
:root {
    --accent: #06b6d4;
    --accent-glow: rgba(6, 182, 212, 0.2);
    --bg-dark: #050505;
    --panel-bg: rgba(15, 15, 20, 0.6);
    --border: rgba(255, 255, 255, 0.08);
    --text-main: #e5e7eb;
    --text-dim: #9ca3af;
    --font-main: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
}

body {
    margin: 0;
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Background Elements */
.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -1;
    mask-image: radial-gradient(circle at center, black, transparent 80%);
}

.overlay-interface {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 100;
    display: flex;
    flex-direction: column;
    padding: 32px;
}

.overlay-interface>* {
    pointer-events: auto;
}

/* Header */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.brand h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.04em;
    margin: 0;
    color: #fff;
}

.header-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.upload-btn {
    background: #fff;
    color: #000;
    padding: 10px 20px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.upload-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.back-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 10px 20px;
    border-radius: 100px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

/* Side Panel */
.side-panel {
    position: absolute;
    left: 32px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--panel-bg);
    backdrop-filter: blur(28px);
    -webkit-backdrop-filter: blur(28px);
    border: 1px solid var(--border);
    padding: 24px;
    border-radius: 24px;
    width: 200px;
}

.stat-item {
    margin-bottom: 20px;
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    margin-bottom: 6px;
}

.stat-value {
    font-size: 14px;
    font-weight: 500;
    color: #fff;
}

/* Bottom Controls */
.bottom-controls {
    margin-top: auto;
    align-self: center;
    display: flex;
    gap: 12px;
    background: var(--panel-bg);
    backdrop-filter: blur(32px);
    -webkit-backdrop-filter: blur(32px);
    border: 1px solid var(--border);
    padding: 8px;
    border-radius: 100px;
}

.btn-group {
    display: flex;
    gap: 4px;
    background: rgba(255, 255, 255, 0.03);
    padding: 4px;
    border-radius: 100px;
}

.btn-action {
    background: transparent;
    border: none;
    color: var(--text-dim);
    padding: 10px 20px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.btn-action:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.05);
}

.btn-action.active {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 12px var(--accent-glow);
}

/* Empty State */
.empty-state {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 5;
    text-align: center;
    pointer-events: none;
}

.empty-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.empty-state h2 {
    font-size: 1.5rem;
    color: #fff;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.empty-state p {
    color: var(--text-dim);
    font-size: 0.95rem;
}

/* Canvas Box */
#canvas-container {
    position: absolute;
    inset: 0;
    z-index: 1;
}

/* Loader Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(6, 182, 212, 0.1);
    border-top: 3px solid var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@media (max-width: 900px) {
    .side-panel {
        display: none;
    }

    .bottom-controls {
        flex-direction: column;
        border-radius: 20px;
        padding: 12px;
    }

    .btn-group {
        width: 100%;
    }

    .btn-action {
        flex: 1;
    }

    .overlay-interface {
        padding: 20px;
    }

    .brand h1 span {
        display: none;
    }
}

/* Side Tools Panel (Cura Style) */
.tools-panel {
    position: absolute;
    right: 32px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 150;
}

.tool-group {
    background: var(--panel-bg);
    backdrop-filter: blur(28px);
    -webkit-backdrop-filter: blur(28px);
    border: 1px solid var(--border);
    padding: 16px;
    border-radius: 20px;
    width: 220px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tool-title {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.control-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.axis-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-dim);
    width: 15px;
}

.step-btns {
    display: flex;
    gap: 4px;
    flex: 1;
}

.btn-step {
    flex: 1;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    color: #fff;
    padding: 6px 0;
    font-size: 10px;
    font-family: var(--font-mono);
    cursor: pointer;
    border-radius: 4px;
    transition: 0.2s;
}

.btn-step:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
}

.reset-btn {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #ef4444;
    padding: 8px 16px;
    border-radius: 100px;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    margin-right: 8px;
}

.reset-btn:hover {
    background: #ef4444;
    color: #fff;
}

@media (max-width: 1100px) {
    .tools-panel {
        display: none;
    }
}