/* Mechanical Diagram v2 Styles */
:root {
    --mech-bg: #141417;
    --mech-sidebar-bg: rgba(20, 20, 23, 0.95);
    --mech-border: rgba(0, 217, 255, 0.2);
    --mech-accent: #00d9ff;
    --mech-text: #e0e0e0;
    --mech-hover: rgba(0, 217, 255, 0.1);
}

.mech-layout {
    display: flex;
    gap: 20px;
    height: 85vh;
    min-height: 600px;
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    background: var(--mech-bg);
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--mech-border);
    transition: height 0.3s ease;
}

.mech-layout.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    border-radius: 0;
    margin: 0;
}

/* Sidebar */
.mech-sidebar {
    width: 300px;
    background: var(--mech-sidebar-bg);
    border-right: 1px solid var(--mech-border);
    display: flex;
    flex-direction: column;
    z-index: 10;
    transition: transform 0.3s ease;
}

.mech-sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--mech-border);
}

.mech-sidebar-header h3 {
    margin: 0;
    color: var(--mech-accent);
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

#mech-layer-list {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

/* Category Items */
.mech-category {
    margin-bottom: 5px;
}

.mech-cat-header {
    padding: 12px 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    border-radius: 8px;
    transition: background 0.2s;
    color: var(--mech-text);
    font-weight: 600;
}

.mech-cat-header:hover {
    background: var(--mech-hover);
}

.mech-cat-header i.toggle-icon {
    margin-left: auto;
    transition: transform 0.3s;
}

.mech-category.collapsed .mech-cat-items {
    display: none;
}

.mech-category.collapsed i.toggle-icon {
    transform: rotate(-90deg);
}

.mech-cat-items {
    padding-left: 10px;
    margin-top: 5px;
    animation: slideDown 0.3s ease;
}

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

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

/* Layer Items */
.mech-item {
    margin-bottom: 4px;
    padding: 8px 10px;
    border-radius: 6px;
    transition: background 0.2s;
}

.mech-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.mech-item.active {
    background: rgba(0, 217, 255, 0.08);
    border-left: 2px solid var(--mech-accent);
}

.mech-item-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.mech-item-info {
    display: flex;
    flex-direction: column;
}

.mech-item-label {
    font-size: 0.95rem;
    color: #fff;
}

.mech-item-desc {
    font-size: 0.8rem;
    color: #888;
    margin-top: 2px;
}

/* Custom Checkbox */
.mech-checkbox {
    position: relative;
    width: 18px;
    height: 18px;
    cursor: pointer;
    margin-top: 2px;
}

.mech-checkbox input {
    opacity: 0;
    width: 0;
    height: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 18px;
    width: 18px;
    background-color: transparent;
    border: 2px solid #555;
    border-radius: 4px;
    transition: all 0.2s;
}

.mech-checkbox:hover input~.checkmark {
    border-color: var(--mech-accent);
}

.mech-checkbox input:checked~.checkmark {
    background-color: var(--mech-accent);
    border-color: var(--mech-accent);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 5px;
    top: 1px;
    width: 4px;
    height: 9px;
    border: solid black;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.mech-checkbox input:checked~.checkmark:after {
    display: block;
}

/* Radio Button Styles */
.mech-checkbox input[type="radio"]~.checkmark {
    border-radius: 50%;
}

.mech-checkbox input[type="radio"]~.checkmark:after {
    border: none;
    width: 8px;
    height: 8px;
    background: #000;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transform: none;
}

/* Diagram Container */
#diagram-container {
    flex: 1;
    position: relative;
    background: radial-gradient(circle at center, #1a1a20 0%, #0d0d10 100%);
    overflow: hidden;
    cursor: grab;
}

#diagram-container:active {
    cursor: grabbing;
}

/* EasyRender Mode: White background for embedded PNGs */
.mech-layer-easyrender {
    background: white;
    padding: 20px;
    border-radius: 10px;
}

#diagram-container.loading::after {
    content: "Betöltés...";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--mech-accent);
    font-size: 1.2rem;
}

/* Controls */
.zoom-controls {
    position: absolute;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.zoom-btn {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: rgba(20, 20, 23, 0.8);
    border: 1px solid var(--mech-accent);
    color: var(--mech-accent);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s;
    backdrop-filter: blur(5px);
}

.zoom-btn:hover {
    background: var(--mech-accent);
    color: #000;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    position: absolute;
    top: 15px;
    left: 15px;
    z-index: 100;
    background: var(--mech-accent);
    border: none;
    color: #000;
    padding: 8px 12px;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
}

@media (max-width: 768px) {
    .mech-sidebar {
        position: absolute;
        height: 100%;
        transform: translateX(-100%);
    }

    .mech-sidebar.open {
        transform: translateX(0);
    }

    .mobile-toggle {
        display: block;
    }
}