xforth 0.1.0

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

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 200% 200%;
    animation: gradient-shift 15s ease infinite;
    min-height: 100vh;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    max-width: 1000px;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3), 0 0 1px rgba(0, 0, 0, 0.1);
    padding: 2.5rem;
    animation: fade-in-up 0.6s ease-out;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.title {
    font-size: 2.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
    text-align: center;
    letter-spacing: -0.5px;
}

.subtitle {
    font-size: 1.05rem;
    color: #64748b;
    text-align: center;
    margin-bottom: 2.5rem;
    font-weight: 500;
}

.panel {
    background: linear-gradient(to bottom right, #f8fafc, #f1f5f9);
    border-radius: 12px;
    padding: 1.75rem;
    margin-bottom: 1.75rem;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.panel:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.panel h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.panel h2::before {
    content: "";
    width: 4px;
    height: 24px;
    background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: #475569;
    margin-bottom: 0.6rem;
    font-size: 0.925rem;
    letter-spacing: 0.01em;
}

.input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s ease;
    background: white;
    font-weight: 500;
    color: #1e293b;
}

.input:hover:not(:disabled) {
    border-color: #cbd5e0;
}

.input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.input:disabled {
    background: #f1f5f9;
    cursor: not-allowed;
    opacity: 0.6;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
}

.checkbox-group input[type="checkbox"] {
    width: 1.35rem;
    height: 1.35rem;
    cursor: pointer;
    accent-color: #667eea;
}

.checkbox-group input[type="checkbox"]:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.checkbox-group label {
    margin-bottom: 0;
    cursor: pointer;
    font-weight: 500;
    color: #475569;
}

.button-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

.button {
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.02em;
}

.button::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s;
}

.button:hover::before {
    opacity: 1;
}

.button:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

.button:active:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.button-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.button-secondary {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.button-tertiary {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.output-panel {
    position: relative;
}

.output-box {
    background: #1e293b;
    border-radius: 10px;
    padding: 1.25rem;
    min-height: 240px;
    max-height: 480px;
    overflow-y: auto;
    font-family: "SF Mono", "Monaco", "Inconsolata", "Fira Code", "Droid Sans Mono", "Source Code Pro", monospace;
    font-size: 0.9rem;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
    position: relative;
}

.output-box::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 30px;
    background: linear-gradient(to bottom, rgba(30, 41, 59, 0.8), transparent);
    pointer-events: none;
}

.log-line {
    color: #e2e8f0;
    padding: 0.4rem 0;
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.log-line::before {
    content: "›";
    color: #667eea;
    font-weight: bold;
    flex-shrink: 0;
}

.placeholder {
    color: #64748b;
    text-align: center;
    padding: 4rem 1rem;
    font-style: italic;
    font-size: 1.05rem;
}

.loading-spinner {
    text-align: center;
    color: #667eea;
    font-weight: 700;
    margin-top: 1.5rem;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.loading-spinner::before {
    content: "";
    width: 20px;
    height: 20px;
    border: 3px solid #e2e8f0;
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Scrollbar styling */
.output-box::-webkit-scrollbar {
    width: 10px;
}

.output-box::-webkit-scrollbar-track {
    background: #334155;
    border-radius: 5px;
    margin: 4px;
}

.output-box::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 5px;
    transition: background 0.2s;
}

.output-box::-webkit-scrollbar-thumb:hover {
    background: #764ba2;
}

/* Status badges */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-left: 0.5rem;
}

.status-success {
    background: #d1fae5;
    color: #065f46;
}

.status-error {
    background: #fee2e2;
    color: #991b1b;
}

.status-running {
    background: #dbeafe;
    color: #1e40af;
}

/* Responsive design */
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    .container {
        padding: 1.5rem;
    }

    .title {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 0.95rem;
    }

    .button-group {
        grid-template-columns: 1fr;
    }

    .panel {
        padding: 1.25rem;
    }
}