/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Geist', sans-serif;
    background-color: white;
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header styles */
.header {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    margin: 20px 0;
    padding: 30px;
    text-align: center;
    color: white;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
    color: #4a5568;
}

.header h1 i {
    margin-right: 15px;
    color: #ffd700;
}

.header p {
    font-size: 1.2rem;
    opacity: 0.9;
    color: #4a5568;
}

/* Main content */
.main-content {
    display: grid;
    gap: 30px;
    margin: 30px 0;
}

/* Task section */
.task-section {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.task-section:hover {
    transform: translateY(-5px);
}

.task-form h2 {
    color: #4a5568;
    margin-bottom: 25px;
    font-size: 1.8rem;
}

.task-form h2 i {
    margin-right: 10px;
    color: #667eea;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #4a5568;
}

#taskInput {
    width: 100%;
    padding: 15px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 16px;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.3s ease;
}

#taskInput:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.submit-btn {
    background: linear-gradient(135deg, #667eea 0%, #4299e1 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.stop-btn {
    background: linear-gradient(135deg, #f56565 0%, #e53e3e 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.stop-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 101, 101, 0.3);
}

.stop-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Result section */
.result-section {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-section h2 {
    color: #4a5568;
    margin-bottom: 25px;
    font-size: 1.8rem;
}

.result-section h2 i {
    margin-right: 10px;
    color: #48bb78;
}

.status-indicator {
    padding: 20px;
    background: #f7fafc;
    border-radius: 12px;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
    color: #4a5568;
}

.status-indicator i {
    margin-right: 10px;
    color: #667eea;
}

.result-text {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 12px;
    padding: 20px;
    white-space: pre-wrap;
    font-family: 'Courier New', monospace;
    line-height: 1.6;
    max-height: 400px;
    overflow-y: auto;
}


/* Footer */
.footer {
    text-align: center;
    padding: 30px;
    color: white;
    opacity: 0.8;
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* Success/Error states */
.success {
    background: #48bb78;
    color: white;
}

.error {
    background: #f56565;
    color: white;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .header p {
        font-size: 1rem;
    }
    
    .task-section,
    .result-section,
    .examples-section {
        padding: 20px;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}