:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #10b981;
    --error: #ef4444;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    background-image: radial-gradient(circle at top right, rgba(99, 102, 241, 0.15), transparent),
                      radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.1), transparent);
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

header h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    background: linear-gradient(to right, #818cf8, #34d399);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1.5rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

textarea {
    width: 100%;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.75rem;
    padding: 1rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    transition: border-color 0.3s ease;
}

textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.file-upload {
    position: relative;
    display: flex;
    align-items: center;
    gap: 1rem;
}

input[type="file"] {
    background: rgba(15, 23, 42, 0.6);
    padding: 0.5rem;
    border-radius: 0.5rem;
    border: 1px dashed rgba(255, 255, 255, 0.3);
    color: var(--text-muted);
}

.btn-primary {
    width: 100%;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 0.75rem;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.btn-secondary {
    width: 100%;
    background: linear-gradient(135deg, #a855f7 0%, #d946ef 100%);
    color: white;
    border: none;
    border-radius: 0.75rem;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(168, 85, 247, 0.4);
}

.status-badge {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
    text-align: center;
    font-size: 0.9rem;
}

.status-badge.success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent);
}

.status-badge.info {
    background: rgba(99, 102, 241, 0.2);
    color: #818cf8;
}

.step-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.step-tag {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.3rem 0.8rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.results-panel h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 0.5rem;
}

pre {
    background: rgba(0, 0, 0, 0.3);
    padding: 1.5rem;
    border-radius: 1rem;
    overflow-x: auto;
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.9rem;
    color: #34d399;
    border: 1px solid rgba(52, 211, 153, 0.2);
}

.placeholder-text {
    color: var(--text-muted);
    text-align: center;
    font-style: italic;
}

footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 3rem;
}

.hidden {
    display: none;
}

.loader {
    width: 48px;
    height: 48px;
    border: 5px solid #FFF;
    border-bottom-color: var(--primary);
    border-radius: 50%;
    display: block;
    margin: 2rem auto;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
}

@keyframes rotation {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }
    header h1 {
        font-size: 2.5rem;
    }
}