@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;600&display=swap');

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

body {
    background-color: #111215;
    color: #e2e8f0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    position: fixed;
    width: 100%;
    height: 100%;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
}

canvas {
    border: none;
    background-color: #111215;
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
    cursor: crosshair;
}

/* ==========================================================================
   Elements Drawer (Left)
   ========================================================================== */

#elementDrawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 180px;
    height: 100%;
    background: rgba(18, 20, 26, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.45);
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1000;
}

#elementDrawer.closed {
    transform: translateX(-180px);
}

#toggleElements {
    position: absolute;
    left: 100%;
    top: 14px;
    height: 38px;
    padding: 0 14px;
    background: rgba(28, 32, 42, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-left: none;
    color: #f1f5f9;
    cursor: pointer;
    border-radius: 0 8px 8px 0;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 4px 2px 12px rgba(0, 0, 0, 0.3);
    transition: background 0.15s, color 0.15s;
}

#toggleElements:hover {
    background: rgba(40, 46, 60, 0.98);
    color: #fff;
}

#elementContent {
    height: 100%;
    overflow-y: auto;
    padding: 14px 10px 24px 10px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

#elementContent::-webkit-scrollbar {
    width: 5px;
}
#elementContent::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}

/* Brush Size Header in Drawer */
.brush-size-box {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.brush-size-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #94a3b8;
}

.brush-val {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    color: #f8fafc;
}

.brush-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 5px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.15);
    outline: none;
}
.brush-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #38bdf8;
    cursor: pointer;
    box-shadow: 0 0 6px rgba(56, 189, 248, 0.6);
}

/* Categories */
.element-category {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.category-title {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #64748b;
    margin-top: 4px;
    padding-left: 2px;
}

/* Element Buttons */
.element-btn {
    position: relative;
    padding: 8px 10px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 600;
    color: #ffffff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    transition: transform 0.1s, box-shadow 0.1s, border-color 0.1s;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.element-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
    filter: brightness(1.08);
}

.element-btn:active {
    transform: translateY(1px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.element-btn.selected {
    border: 2px solid #ffffff;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.4), 0 4px 14px rgba(0, 0, 0, 0.5);
    transform: scale(1.02);
}

.hotkey-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 600;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1px 5px;
    border-radius: 4px;
    color: #ffffff;
}

/* ==========================================================================
   Quick Controls (Pause & Step)
   ========================================================================== */

#quickControls {
    position: absolute;
    right: 100%;
    top: 60px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-right: 10px;
}

#togglePause, #btnStep {
    width: 38px;
    height: 38px;
    background: rgba(28, 32, 42, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #f1f5f9;
    cursor: pointer;
    border-radius: 8px;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    transition: background 0.15s, transform 0.1s, border-color 0.15s;
}

#togglePause:hover, #btnStep:hover {
    background: rgba(45, 52, 68, 0.98);
    border-color: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

#togglePause:active, #btnStep:active {
    transform: scale(0.96);
}

/* ==========================================================================
   Settings Drawer (Right)
   ========================================================================== */

#settingsDrawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 310px;
    height: 100%;
    background: rgba(18, 20, 26, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.45);
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1000;
    transform: translateX(310px);
}

#settingsDrawer.open {
    transform: translateX(0);
}

#toggleDrawer {
    position: absolute;
    right: 100%;
    top: 14px;
    height: 38px;
    padding: 0 14px;
    background: rgba(28, 32, 42, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-right: none;
    color: #f1f5f9;
    cursor: pointer;
    border-radius: 8px 0 0 8px;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: -4px 2px 12px rgba(0, 0, 0, 0.3);
    transition: background 0.15s, color 0.15s;
}

#toggleDrawer:hover {
    background: rgba(40, 46, 60, 0.98);
    color: #fff;
}

#settingsContent {
    height: 100%;
    overflow-y: auto;
    padding: 16px 18px 40px 18px;
}

#settingsContent::-webkit-scrollbar {
    width: 5px;
}
#settingsContent::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}

.setting-group {
    margin-bottom: 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 8px;
    padding: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.setting-group h3 {
    width: 100%;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #38bdf8;
    margin-bottom: 2px;
}

.setting-group fieldset {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    padding: 8px 10px;
    font-size: 12px;
}

.setting-group legend {
    padding: 0 4px;
    font-size: 11px;
    color: #94a3b8;
}

.setting-control {
    display: grid;
    grid-template-columns: 1.2fr 2fr 0.6fr;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    width: 100%;
    color: #cbd5e1;
}

.setting-control input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 5px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.15);
    outline: none;
}
.setting-control input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: #38bdf8;
    cursor: pointer;
}

.control-val {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    text-align: right;
    color: #94a3b8;
}

.setting-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    width: calc(50% - 5px);
    font-size: 12px;
    color: #cbd5e1;
    cursor: pointer;
}

.setting-checkbox input[type=checkbox] {
    accent-color: #38bdf8;
    width: 15px;
    height: 15px;
    cursor: pointer;
}

.reset-defaults-btn {
    width: 100%;
    padding: 10px;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: #fca5a5;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 600;
    transition: background 0.15s, border-color 0.15s;
    margin-top: 10px;
}

.reset-defaults-btn:hover {
    background: rgba(239, 68, 68, 0.25);
    border-color: rgba(239, 68, 68, 0.55);
    color: #ffffff;
}

@media (max-width: 768px) {
    #elementDrawer {
        width: 150px;
    }
    #elementDrawer.closed {
        transform: translateX(-150px);
    }
    #settingsDrawer {
        width: 270px;
        transform: translateX(270px);
    }
    #settingsDrawer.open {
        transform: translateX(0);
    }
    .setting-checkbox {
        width: 100%;
    }
}