:root {
    --background-color: #121212;
    --panel-background: #1e1e1e;
    --text-color: #e0e0e0;
    --border-color: #444;
    --grid-color: rgba(0, 0, 0, 0.2); 
    --accent-color: #0095ff;
    --header-color: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    overflow: hidden;
}

#login-modal {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.7); display: flex;
    justify-content: center; align-items: center; z-index: 100; backdrop-filter: blur(5px);
}
.login-box { background-color: var(--panel-background); padding: 30px 40px; border-radius: 10px; text-align: center; border: 1px solid var(--border-color); }
.login-icon { width: 60px; height: 60px; margin-bottom: 15px; }
.login-box h2 { margin-bottom: 20px; }
#username-input { display: block; width: 100%; padding: 10px; margin-bottom: 20px; border-radius: 5px; border: 1px solid var(--border-color); background-color: #333; color: #fff; font-size: 1rem; }
#join-button { width: 100%; padding: 12px; border: none; border-radius: 5px; background-color: var(--accent-color); color: #fff; font-size: 1.1rem; font-weight: bold; cursor: pointer; transition: background-color 0.2s; }
#join-button:hover { background-color: #0077cc; }

.hidden { display: none !important; }

#app-container { display: flex; height: 100vh; }
#tools-panel { width: 280px; min-width: 280px; flex-shrink: 0; padding: 20px; background-color: var(--panel-background); border-right: 1px solid var(--border-color); display: flex; flex-direction: column; overflow-y: auto; }
.title-container { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 20px; }
.title-icon { width: 40px; height: 40px; }
#tools-panel h1 { font-size: 2rem; color: var(--header-color); }
#tools-panel h3 { margin-top: 20px; margin-bottom: 10px; border-bottom: 1px solid var(--border-color); padding-bottom: 5px; font-weight: 600; }
.info-box { text-align: center; margin-bottom: 15px; }
.info-box h3 { border: none; margin: 0; font-weight: normal; color: #aaa; }
.info-box p { font-size: 1.5rem; font-weight: bold; color: var(--accent-color); }
.controls { margin-top: 20px; }
.controls label { display: flex; align-items: center; justify-content: space-between; padding: 10px; background-color: #2c2c2c; border-radius: 5px; cursor: pointer; }
#color-palette { display: grid; grid-template-columns: repeat(auto-fill, minmax(35px, 1fr)); gap: 10px; }
.color-swatch { width: 35px; height: 35px; border-radius: 50%; cursor: pointer; border: 3px solid transparent; transition: all 0.2s ease; }
.color-swatch:hover { transform: scale(1.1); }
.color-swatch.selected { border-color: var(--accent-color); transform: scale(1.15); box-shadow: 0 0 10px var(--accent-color); }
#canvas-wrapper { flex-grow: 1; display: flex; overflow: hidden; background-color: #000; }
#pixel-canvas { cursor: crosshair; image-rendering: pixelated; image-rendering: -moz-crisp-edges; image-rendering: crisp-edges; background-color: #fff; }
#pixel-canvas.panning { cursor: grabbing; }
#pixel-tooltip { position: absolute; display: none; background-color: rgba(0, 0, 0, 0.8); color: #fff; padding: 5px 10px; border-radius: 5px; font-size: 0.9rem; pointer-events: none; z-index: 101; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #2c2c2c; }
::-webkit-scrollbar-thumb { background: #555; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #777; }

/* YENİ: Özel Renk Oluşturucu Stilleri */
.custom-color-creator {
    background-color: #2c2c2c;
    padding: 15px;
    border-radius: 5px;
    margin-top: 10px;
}
.color-preview-container {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    align-items: center;
}
#color-picker {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 50px;
    height: 50px;
    background-color: transparent;
    border: none;
    cursor: pointer;
}
#color-picker::-webkit-color-swatch {
    border-radius: 5px;
    border: 1px solid var(--border-color);
}
#color-picker::-moz-color-swatch {
    border-radius: 5px;
    border: 1px solid var(--border-color);
}
#color-preview {
    width: 100%;
    height: 50px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
}
.slider-container {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 5px;
}
.slider-container label {
    font-weight: bold;
    width: 20px;
}
.slider-container input[type="range"] {
    flex-grow: 1;
}
.slider-container span {
    width: 30px;
    text-align: right;
}