/* 
   Scoping to .rng-app ensures this CSS does NOT leak into your website's main theme 
*/
.rng-app {
    --rng-bg-main: #0a0f1d;
    --rng-bg-panel: #111827;
    --rng-bg-input: #040711;
    --rng-accent: #fbbf24;       /* Amber / Gold */
    --rng-accent-hover: #f59e0b;
    --rng-accent-dim: rgba(251, 191, 36, 0.15);
    --rng-text-main: #f8fafc;
    --rng-text-muted: #64748b;
    --rng-border: #1e293b;
    --rng-danger: #ef4444;
    --rng-success: #10b981;
    
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--rng-bg-main);
    color: var(--rng-text-main);
    
    /* Full screen scaling mechanism */
    width: 100%;
    height: 100vh;
    min-height: 600px;
    display: flex;
    flex-direction: row;
    box-sizing: border-box;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--rng-border);
    border-radius: 12px;
}

.rng-app * {
    box-sizing: border-box;
}

/* --- Sidebar --- */
.rng-sidebar {
    width: 380px;
    min-width: 380px;
    background-color: var(--rng-bg-panel);
    border-right: 1px solid var(--rng-border);
    display: flex;
    flex-direction: column;
    padding: 24px;
    overflow-y: auto;
    z-index: 10;
}

.rng-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}

.rng-logo {
    background: linear-gradient(135deg, var(--rng-accent), #d97706);
    padding: 8px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rng-header svg {
    width: 24px;
    height: 24px;
    color: #000;
}

.rng-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0;
    color: #ffffff;
    letter-spacing: -0.5px;
}

.rng-title span {
    color: var(--rng-accent);
}

.rng-subtitle {
    font-size: 0.8rem;
    color: var(--rng-text-muted);
    margin: 2px 0 0 0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* --- Controls --- */
.rng-controls {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 32px;
}

.rng-row {
    display: flex;
    gap: 16px;
}

.rng-w-half {
    flex: 1;
}

.rng-control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.rng-control-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--rng-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.rng-input, .rng-select {
    width: 100%;
    background-color: var(--rng-bg-input);
    border: 1px solid var(--rng-border);
    color: var(--rng-text-main);
    padding: 12px 14px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: inherit;
    transition: all 0.2s;
    outline: none;
}

.rng-select {
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
}

.rng-input:focus, .rng-select:focus {
    border-color: var(--rng-accent);
    box-shadow: 0 0 0 3px var(--rng-accent-dim);
}

.rng-highlight-input {
    border-color: rgba(251, 191, 36, 0.3);
}

.rng-hint {
    font-size: 0.75rem;
    color: var(--rng-text-muted);
}

/* Toggles & Settings */
.rng-settings {
    display: flex;
    flex-direction: column;
    gap: 12px;
    background-color: var(--rng-bg-input);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--rng-border);
}

.rng-settings-title {
    font-size: 0.8rem;
    color: var(--rng-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 8px 0;
}

.rng-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
}

.rng-toggle input[type="checkbox"] {
    display: none;
}

.rng-toggle-box {
    width: 20px;
    height: 20px;
    border: 2px solid var(--rng-border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    background-color: var(--rng-bg-main);
}

.rng-toggle input[type="checkbox"]:checked + .rng-toggle-box {
    background-color: var(--rng-accent);
    border-color: var(--rng-accent);
}

.rng-toggle input[type="checkbox"]:checked + .rng-toggle-box::after {
    content: "✓";
    color: #000;
    font-size: 12px;
    font-weight: bold;
}

.rng-toggle-text {
    font-size: 0.9rem;
    color: var(--rng-text-main);
    font-weight: 500;
}

.rng-sub-setting {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: rgba(255,255,255,0.03);
    padding: 10px 16px;
    border-radius: 6px;
    margin-top: 4px;
    border-left: 2px solid var(--rng-accent);
}

.rng-sub-setting label {
    font-size: 0.85rem;
    color: var(--rng-text-muted);
}

.rng-sub-setting input {
    width: 70px;
    padding: 6px 10px;
}

/* Generate Button */
.rng-generate-btn {
    margin-top: auto;
    padding: 18px !important;
    font-size: 1.1rem !important;
    box-shadow: 0 8px 25px rgba(251, 191, 36, 0.2);
    color: #000 !important;
}

.rng-generate-btn svg {
    width: 22px !important;
    height: 22px !important;
}

/* --- Main Workspace --- */
.rng-workspace {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    padding: 32px;
    background-image: radial-gradient(var(--rng-border) 1px, transparent 1px);
    background-size: 24px 24px;
    overflow: hidden;
}

.rng-featured-card {
    background: linear-gradient(145deg, var(--rng-bg-panel), var(--rng-bg-input));
    border: 1px solid var(--rng-border);
    border-radius: 12px;
    padding: 24px 32px;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    position: relative;
    overflow: hidden;
}

.rng-featured-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--rng-accent), #d97706);
}

.rng-featured-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--rng-text-muted);
    font-weight: 600;
}

.rng-featured-display {
    font-family: 'Courier New', Courier, monospace;
    font-size: 4rem;
    line-height: 1;
    font-weight: 800;
    color: var(--rng-accent);
    text-shadow: 0 0 20px var(--rng-accent-dim);
    text-align: center;
    word-break: break-all;
}

/* Output Container */
.rng-output-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--rng-bg-panel);
    border: 1px solid var(--rng-border);
    border-radius: 12px;
    overflow: hidden;
}

.rng-output-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--rng-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(0,0,0,0.2);
}

.rng-output-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--rng-text-main);
}

.rng-badge {
    background-color: var(--rng-accent-dim);
    color: var(--rng-accent);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
}

.rng-textarea {
    flex-grow: 1;
    width: 100%;
    resize: none;
    background-color: transparent;
    border: none;
    color: var(--rng-text-main);
    padding: 20px;
    font-size: 1.1rem;
    font-family: 'Courier New', Courier, monospace;
    line-height: 1.6;
    outline: none;
}

/* Actions */
.rng-actions {
    display: flex;
    gap: 12px;
    padding: 16px 20px;
    border-top: 1px solid var(--rng-border);
    background-color: rgba(0,0,0,0.2);
}

.rng-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    color: #ffffff;
}

.rng-btn svg { width: 18px; height: 18px; }
.rng-btn:active { transform: scale(0.97); }

.rng-btn-primary { background-color: var(--rng-accent); }
.rng-btn-primary:hover { background-color: var(--rng-accent-hover); }

.rng-btn-secondary { background-color: var(--rng-border); }
.rng-btn-secondary:hover { background-color: #27364f; }

.rng-btn-danger {
    background-color: transparent;
    border: 1px solid var(--rng-danger);
    color: var(--rng-danger);
}
.rng-btn-danger:hover { background-color: rgba(239, 68, 68, 0.1); }

.rng-btn-success { background-color: var(--rng-success); }
.rng-btn-success:hover { background-color: #059669; }

/* Toast */
.rng-toast {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--rng-success);
    color: white;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 50;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.rng-toast.rng-show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Responsive */
@media (max-width: 960px) {
    .rng-app {
        flex-direction: column;
        height: auto;
        min-height: 100vh;
    }
    .rng-sidebar {
        width: 100%;
        min-width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--rng-border);
    }
    .rng-workspace {
        min-height: 60vh;
        padding: 16px;
    }
    .rng-featured-display {
        font-size: 2.5rem;
    }
    .rng-actions {
        flex-wrap: wrap;
    }
    .rng-btn-download {
        margin-left: 0 !important;
        width: 100%;
    }
}