:root {
    --bg: #121212;
    --panel: #1e1e24;
    --border: #333;
    --accent: #50fa7b;
    --accent-hover: #40c963;
    --delete: #ff5555;
    --delete-hover: #ff0000;
    --tag-noise: #bd93f9;
    --tag-type: #8be9fd;
    --tag-name: #ffb86c;
    --text: #f8f8f2;
    --text-mute: #8b9bb4;
    --error: #ff5555;
    --font-mono: 'Consolas', 'Monaco', monospace;
    --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-ui);
    background-color: var(--bg);
    color: var(--text);
    height: 100vh;
    display: flex;
    overflow: hidden;
}

#app-container {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    position: relative;
}

#viewport {
    flex: 1;
    position: relative;
    background: #87CEEB; 
    overflow: hidden;
    cursor: move;
}

.overlay-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 10;
}

.overlay-btn {
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid var(--border);
    color: var(--accent);
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    backdrop-filter: blur(4px);
    transition: all 0.2s;
}

.overlay-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    border-color: var(--accent);
}

.overlay-btn.active {
    background: var(--accent);
    color: #000;
}

.overlay-btn.realistic-on {
    background: rgba(80, 250, 123, 0.2);
    border-color: var(--accent);
    color: var(--accent);
}

.zoom-container {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    z-index: 10;
    background: rgba(0, 0, 0, 0.5);
    padding: 10px 5px;
    border-radius: 20px;
    backdrop-filter: blur(4px);
    border: 1px solid var(--border);
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.zoom-container label {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--text);
    user-select: none;
}

input[type=range][orient=vertical] {
    writing-mode: bt-lr; 
    -webkit-appearance: slider-vertical;
    width: 8px;
    height: 150px;
    padding: 0 5px;
    accent-color: var(--accent);
    cursor: ns-resize;
}

#controls {
    height: auto;
    min-height: 180px;
    background: var(--panel);
    border-top: 1px solid var(--border);
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 20;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.5);
}

.bar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-mute);
    font-weight: bold;
    text-transform: uppercase;
}

.tags-container {
    display: flex;
    gap: 10px;
    align-items: center;
}

.info-tag {
    padding: 3px 8px;
    border-radius: 4px;
    color: #000;
    font-weight: 700;
    font-size: 0.7rem;
    letter-spacing: 0.5px;
}

.gen-name-text {
    color: var(--tag-name);
    font-family: var(--font-mono);
    margin-left: 5px;
    text-transform: none;
}

#tag-noise { background: var(--tag-noise); }
#tag-gen { background: var(--tag-type); }

.input-wrapper {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

textarea#formula-input {
    width: 100%;
    height: 60px;
    background: #000;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 10px;
    resize: none;
    outline: none;
    transition: border-color 0.2s;
}

textarea#formula-input:focus {
    border-color: var(--accent);
}

#error-msg {
    color: var(--error);
    font-size: 0.75rem;
    font-weight: bold;
    font-family: var(--font-mono);
    min-height: 1.2em;
    padding-left: 5px;
}

.error-hidden { visibility: hidden; }

.btn-row {
    display: flex;
    gap: 10px;
}

button {
    border: none;
    padding: 10px 16px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
    transition: transform 0.1s, opacity 0.2s;
    text-transform: uppercase;
}

button:active { transform: scale(0.98); }

.btn-primary { background: var(--accent); color: #000; flex: 2; }
.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary { background: #383a59; color: var(--text); flex: 1; }
.btn-secondary:hover { background: #44475a; }

#sidebar {
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: 340px;
    background: #16161a;
    border-right: 1px solid var(--border);
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 50;
    display: flex;
    flex-direction: column;
    box-shadow: 5px 0 25px rgba(0,0,0,0.5);
}

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

.sidebar-header {
    padding: 15px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #1f1f25;
}

.tab-buttons {
    display: flex;
    gap: 10px;
}

.tab-btn {
    background: transparent;
    color: var(--text-mute);
    border: 1px solid transparent;
    padding: 5px 10px;
    font-size: 0.75rem;
    cursor: pointer;
}

.tab-btn.active {
    background: #2d2d35;
    color: var(--text);
    border-color: var(--border);
    border-radius: 4px;
}

.close-sidebar {
    background: none; color: var(--text-mute); padding: 5px; cursor: pointer;
}

#sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.history-item {
    background: #25252b;
    margin-bottom: 8px;
    border-radius: 4px;
    border-left: 3px solid transparent;
    transition: background 0.2s;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-right: 5px;
}
.history-item:hover { background: #2f2f36; border-left-color: var(--accent); }

.history-content {
    padding: 12px;
    flex: 1;
    cursor: pointer;
    overflow: hidden;
}

.history-delete {
    background: none;
    border: none;
    color: var(--delete);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0 10px;
    height: 100%;
    display: flex;
    align-items: center;
    opacity: 0.7;
    transition: opacity 0.2s, color 0.2s;
}

.history-delete:hover { opacity: 1; color: var(--delete-hover); }

.h-tags { margin-bottom: 6px; display: flex; gap: 5px; flex-wrap: wrap; align-items: center; }
.h-badge { font-size: 0.65rem; padding: 2px 5px; border-radius: 3px; color: #000; font-weight: bold; }
.h-badge.n { background: var(--tag-noise); }
.h-badge.t { background: var(--tag-type); }
.h-name { font-size: 0.7rem; color: var(--tag-name); font-weight: bold; }

.h-code { 
    font-family: var(--font-mono); 
    color: var(--text-mute); 
    display: block; 
    white-space: nowrap; 
    overflow: hidden; 
    text-overflow: ellipsis; 
    font-size: 0.7rem;
}

#toast {
    position: absolute;
    bottom: 200px; left: 50%;
    transform: translateX(-50%);
    background: var(--text);
    color: #000;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.8rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 100;
}

@media (min-width: 768px) {
    #controls { padding: 15px 30px; }
}