:root {
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --background: #1A1A2E;
    --card-bg: #16213E;
    --text: #E6E6E6;
    --text-muted: #A0AEC0;
    --error: #F56565;
    --success: #48BB78;
}
body.dark-theme {
    background-color: var(--background);
    color: var(--text);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
header {
    margin-bottom: 2rem;
    text-align: center;
}

header h1 {
    color: var(--primary);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.card {
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.form-card {
    border-left: 4px solid var(--primary);
}

.result-card {
    border-left: 4px solid var(--success);
}

.result-card.error {
    border-left-color: var(--error);
}

h2 {
    color: var(--primary);
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

select, input, textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: 0.25rem;
    border: 1px solid #2D3748;
    background-color: #2D3748;
    color: var(--text);
    margin-bottom: 0.5rem;
}

textarea {
    min-height: 150px;
    resize: vertical;
}

button {
    background-color: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.2s;
    margin-top: 1rem;
}

button:hover {
    background-color: var(--primary-dark);
}

button:disabled {
    background-color: #4A5568;
    cursor: not-allowed;
}

.loader {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 1rem 0;
}

.loader span {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    background-color: var(--primary);
    animation: bounce 1.4s infinite ease-in-out both;
}

.loader span:nth-child(1) {
    animation-delay: -0.32s;
}

.loader span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

pre {
    background-color: #2D3748;
    padding: 1rem;
    border-radius: 0.25rem;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
}